WO2024168530A1

WO2024168530A1 - Multi-mode binocular handheld optical device

Info

Publication number: WO2024168530A1
Application number: PCT/CN2023/075973
Authority: WO
Inventors: 罗定
Original assignee: 合肥英睿系统技术有限公司
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2024-08-22
Also published as: CN119301500A

Abstract

A multi-mode binocular handheld optical device, comprising a binocular white light assembly (10), a laser assembly (20), an infrared assembly (30), and a display module (40). The binocular white light assembly (10) comprises two monocular imaging modules (16) respectively provided in correspondence to a left eye and a right eye, and is used for receiving a visible light signal in a target field of view and then forming a white light image at the rear end of a visible light path; the infrared assembly (30) is electrically connected to the display module (40), and is used for receiving an infrared light signal and converting same into an infrared image signal to be sent to the display module (40) for displaying a corresponding infrared image; the laser assembly (20) is electrically connected to the display module (40), and comprises a laser emitting module and a laser receiving module, and a laser emitting light path and a laser receiving light path are respectively coaxial with a visible light path of the corresponding monocular imaging module (16); and the laser emitting module is used for emitting a pulse laser, and a laser signal reflected by a detection target is used for calculating distance information of the detection target and the distance information is sent to the display module (40) for display; and the distance information and/or infrared image displayed in the display module (40) are fused with the white light image.

Description

Multi-mode binocular handheld optical device

Technical Field

The present application relates to the field of image processing, and in particular to a multi-mode binocular handheld optical device.

Background Art

As a traditional device for reconnaissance and target search, telescopes play an important role in the application fields of aiming and hunting. At present, the mainstream handheld optical devices on the market, such as handheld telescopes, are mostly single-optical white light telescopes with relatively simple functions, which are difficult to meet people's increasingly diverse needs for handheld telescopes.

For example, in order to enhance the target search capability of handheld telescopes, a white light telescope with laser ranging function is proposed. On the basis of the structure of the existing white light telescope, a laser ranging structure that realizes laser emission, reception and ranging calculation is superimposed. However, this superimposed design method will increase the size of the handheld telescope, which is not conducive to the design demand of convenient carrying. In addition, with the popularization of thermal imaging sensors, thermal imaging telescopes are becoming more and more popular in the consumer market. How to create a telescope type product that can reflect obvious differentiation in the market and combines white light telescopes with thermal imaging is also a problem that needs to be solved in the development of technology in this field.

Technical issues

In order to solve the existing technical problems, the embodiments of the present invention provide a multi-spectral fusion multi-mode handheld optical device with compact structure, small overall size and easy to carry.

Technical Solutions

The embodiment of the present invention provides a multi-mode binocular handheld optical device, including a binocular white light component, a laser component, an infrared component and a display module; the binocular white light component includes two monocular imaging modules respectively arranged corresponding to the left eye and the right eye, and is used to receive the visible light signal in the target field of view and then form a white light image at the rear end of the respective corresponding visible light paths; the infrared component is electrically connected to the display module, and is used to receive the infrared light signal in the target field of view and convert it into an infrared image signal, and then send it to the display module to display the corresponding infrared image; the laser component is electrically connected to the display module, and includes two monocular imaging modules respectively arranged corresponding to the left eye and the right eye, and is used to receive the infrared light signal in the target field of view and then convert it into an infrared image signal, and then send it to the display module to display the corresponding infrared image; the laser component is electrically connected to the display module, and includes two monocular imaging modules respectively arranged corresponding to the visible light signal in ... convert it into an infrared image signal, and then send it to the display module to display the corresponding infrared image; the laser component is electrically connected to the display module, and includes two monocular imaging modules respectively arranged corresponding to the visible light signal in the left eye and the right eye, and is used to receive the infrared light signal in the target field of view and convert it into an infrared image signal, and then send it to the display module to display the corresponding infrared image; the laser component is electrically connected to the display module, and includes two monocular imaging modules respectively arranged corresponding to the visible light signal in the left eye and the right eye, and is used to receive the infrared light signal in the target field of view and convert it into an infrared image signal, and then send it to the display module to display The laser emitting module and the laser receiving module are respectively arranged in correspondence with the visible light path, and are used for laser emitting and receiving, and the laser emitting light path and the laser receiving light path are respectively coaxial with the visible light path of the corresponding monocular imaging module; wherein, the laser receiving module emits a pulsed laser to the detection target, and the laser signal reflected back by the detection target is received by the laser receiving module and is used to calculate the distance information of the detection target, and the distance information is sent to the display module for display; the distance information and/or the infrared image displayed in the display module are finally transmitted to the rear end of the visible light path so as to be merged with the white light image.

The laser receiving module includes a laser receiving objective lens arranged at the front end of the visible light path, and a first image splitter is also arranged in the visible light path, which is used to separate the visible light signal from the laser signal received by the laser receiving objective lens; wherein the visible light signal is transmitted through the first image splitter. A white light image is formed at the rear end of the corresponding visible light path after an image-relaying beam splitter, and the laser signal received by the laser receiving objective lens is used to calculate distance information after being reflected by the first image-relaying beam splitter and deviated from the corresponding visible light path.

Wherein, the display module is located on a light incident side of the first image relay beam splitter, and the distance information and/or the infrared image displayed on the display module are incident on the first image relay beam splitter in the form of light signals, and are reflected by the first image relay beam splitter to the rear end of the visible light path to be merged with the white light image.

Among them, the multi-mode binocular handheld optical device also includes a projection module arranged between the first image relay beam splitter and the display module, and the projection module is used to project the distance information and/or the infrared image displayed on the display module to the first image relay beam splitter in the form of a light signal, which is reflected by the first image relay beam splitter to the rear end of the visible light path.

Among them, the infrared component includes an infrared objective lens group and an infrared core arranged in sequence along the infrared optical path, and the infrared core is connected to the display module; the infrared objective lens group is used to collect infrared light signals within the target field of view, and the infrared core is used to convert the infrared light signals into electrical signals and send them to the display module to display the corresponding infrared image.

Wherein, the display module is a transparent display screen arranged in the visible light path of any monocular imaging module; the visible light signal is transmitted through the transparent display screen and merged with the distance information and/or the infrared image displayed on the transparent display screen.

Wherein, the laser emission module includes a laser emitter arranged on one side corresponding to the visible light path, and a second image-relay beam splitter located in the emission direction of the pulsed laser emitted by the laser emitter is arranged in the corresponding visible light path. The pulsed laser emitted by the laser emitter is incident on the second image-relay beam splitter, and after being reflected by the second image-relay beam splitter, it is emitted toward the detection target along the corresponding visible light path in the opposite direction to the incident direction of the visible light signal, and the laser signal reflected back by the detection target is received by the laser receiving module arranged in another visible light path; wherein, after the visible light signal in the target field of view is incident, it is emitted toward the second image-relay beam splitter along the corresponding visible light path, and after being transmitted through the second image-relay beam splitter, it forms a white light image at the rear end of the corresponding visible light path.

Among them, the monocular imaging module includes a white light objective lens located at the front end of the visible light path and an eyepiece arranged at the rear end of the visible light path, and the laser emission module also includes a laser emission objective lens arranged at the corresponding front end of the visible light path, and the laser emission objective lens and the laser receiving objective lens are respectively coaxial with the corresponding white light objective lens.

Wherein, the laser receiving module also includes a photoelectric detector arranged on a light-emitting side of the first image-relay beam splitter and a laser signal processor electrically connected to the photoelectric detector; the laser signal reflected back by the detection target is collected by the laser receiving objective lens, emitted toward the first image-relay beam splitter along the corresponding visible light path, and reflected toward the photoelectric detector by the first image-relay beam splitter. The photoelectric detector converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor, and the laser signal processor calculates the distance information between the detection target and the detection target.

Wherein, the first image-transmitting beam splitter is composed of a Behan prism and a half pentaprism; the Behan prism includes The invention comprises an incident surface, a first edge reflection surface, an exit surface, a second edge reflection surface, and an intermediate reflection surface which is arranged in sequence and is inclined between the incident surface and the exit surface; wherein the incident surface faces the incident direction of the visible light, the exit surface is parallel to the incident surface and is located at the rear end of the corresponding visible light path, and the second edge reflection surface is connected to the half pentaprism; the half pentaprism is arranged on the side of the Byehan prism close to the infrared component, the half pentaprism includes a light incident surface and a light exit surface, and the light incident surface faces the display module; wherein the visible light signal is incident into the Byehan prism from the incident surface, is transmitted through the Byehan prism, and is emitted from the exit surface to form a white light image at the rear end of the corresponding visible light path; after the laser signal is incident into the Byehan prism from the incident surface, it is reflected multiple times by the intermediate reflection surface, the first edge reflection surface, and the incident surface and then emitted to the half pentaprism, and is emitted from the light exit surface of the half pentaprism and is used to calculate the distance information.

Among them, the multi-mode binocular handheld optical device also includes a main control board connected to the infrared component, the laser component and the display module respectively, and the main control board receives the electrical signal corresponding to the infrared light signal sent by the infrared component and/or the distance information sent by the laser component, and controls the display module to display the corresponding infrared image and/or the distance information.

Wherein, a filtering lens cover is respectively provided on the outer side of the front end of the visible light path of each monocular imaging module, which is used to filter out the visible light signal and allow the laser signal to pass through.

Among them, the working modes of the multi-mode binocular handheld optical device include one of the following: a white light mode in which only the binocular white light component works to form a white light image, an infrared mode in which only the infrared component works to form an infrared image, a dual-light fusion mode in which both the white light mode and the infrared mode are turned on, a white light ranging mode in which both the white light mode and the laser ranging mode are turned on, an infrared ranging mode in which both the infrared mode and the laser ranging mode are turned on, and a dual-light fusion ranging mode in which the white light mode, the infrared mode, and the laser ranging mode are all turned on.

Wherein, the multi-mode binocular handheld optical device is a binocular handheld telescope.

Beneficial Effects

The multi-mode binocular handheld optical device provided in the above embodiment includes a binocular white light component, an infrared component and a laser component. The laser component includes a laser transmitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules, wherein the laser transmitting optical path and the receiving optical path are respectively arranged to share the optical path with the two visible light optical paths in the binocular white light component, so that the structure is more compact and the overall volume can be effectively reduced under the premise of realizing the multi-mode of the handheld optical device. The whole device is small and easy to carry; secondly, the display module is connected to the laser component and the infrared component respectively, the infrared component converts the infrared light signal into an electrical signal of an infrared image and sends it to the display module for display, the laser component can send the distance information of the detected target to the display module for display, and the infrared image and/or the distance information displayed in the display module are fused with the white light image imaged by the visible light path in the binocular white light component, and the infrared image and/or the distance information are superimposed on the white light image. The structure is compact and the target highlighting ability can be enhanced, which is convenient for observation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a multi-mode binocular handheld optical device according to an embodiment;

FIG2 is a schematic structural diagram of a multi-mode binocular handheld optical device in another embodiment;

FIG3 is a schematic diagram of a multi-mode binocular handheld optical device in another embodiment;

FIG4 is a schematic diagram of a right-eye imaging optical path in an embodiment, wherein the emission optical path of the laser partially overlaps with the right-eye imaging optical path;

FIG5 is a schematic diagram of a left-eye imaging optical path in an embodiment, wherein the laser receiving optical path partially overlaps with the left-eye imaging optical path;

FIG. 6 is a schematic diagram of the overlapped portion of the infrared imaging optical path and the laser ranging optical path in one embodiment.

Component Symbols:

Binocular white light assembly 10, left eye white light channel 111, right eye white light channel 112, white light objective lens 13, first image transfer beam splitter 15a, second image transfer beam splitter 15b, incident surface 151, exit surface 152, intermediate reflection surface 153, first edge reflection surface 154, second edge reflection surface 157, light incident surface 155, light exit surface 156, monocular imaging module 16, left eye imaging module 161, right eye imaging module 162, eyepiece 18, laser assembly 20, laser transmitter 21, laser transmission objective lens 22, laser signal processor 23, photoelectric detector 24, laser receiving objective lens 25, infrared assembly 30, infrared channel 31, infrared objective lens group 33, infrared movement 34, main control board 60, display module 40, OLED display screen 41, transparent display screen 42, projection module 50

Embodiments of the present invention

The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the implementation of the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the hunting field, traditional white light binoculars are gradually unable to meet user needs. With the development of thermal imaging sensor technology, thermal imaging binoculars are gradually becoming popular among users. Currently, the optional binocular handheld binoculars can be divided into the following types:

One type is an infrared and digital integrated telescope, which is mainly composed of an infrared camera and a digital camera, dual display screens, and binoculars; however, this type of equipment cannot be used without power, and the electronic There are many components and the maintenance is complicated, so it is impossible to truly see the actual scene.

One type is the laser ranging telescope, which is mainly composed of a laser ranging structure in which binoculars are superimposed to realize laser emission, reception and ranging calculation; however, the simple superposition design causes the monocular handheld telescope products to be too large, which affects portability.

One type is a dual-spectrum telescope, which is mainly composed of a white light telescope and an infrared telescope, wherein the white light telescope is composed of a white light objective lens, an eyepiece 1, etc., and the infrared telescope is composed of an infrared objective lens, an infrared detector, an OLED display, an eyepiece 2, etc.; however, for the dual-spectrum telescope product that supports both white light and infrared observation targets, the white light image and the infrared image are observed using separate eyepieces 1 and 2, which not only has a large product size, but also has poor observation comfort for the left eye and the right eye to respectively view the white light image and the infrared image.

Please refer to Figure 1, which is a multi-mode binocular handheld optical device provided in an embodiment of the present application, including a binocular white light component 10, a laser component 20, an infrared component 30 and a display module 40; the binocular white light component 10 includes two monocular imaging modules 16 respectively arranged corresponding to the left eye and the right eye, which are referred to as the left eye imaging module 161 and the right eye imaging module 162 in the following description for the convenience of distinction and description. It should be noted that the description of the left eye imaging module 161 and the right eye imaging module 162 in the embodiment of the present application can be interchangeable, that is, the description of the left eye imaging module 161 in the embodiment of the present application can actually be replaced by the right eye imaging module 162, and the description of the right eye imaging module 162 is correspondingly replaced by the left eye imaging module 161. The left-eye imaging module 161 and the right-eye imaging module 162 are respectively used to receive visible light signals in the target field of view and form white light images at the rear ends of their corresponding visible light paths; the infrared component 30 is electrically connected to the display module 40, and is used to receive infrared light signals in the target field of view, convert them into infrared image signals, and then send them to the display module 40 to display the corresponding infrared images; the laser component 20 is electrically connected to the display module 40, and includes a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules 16, which are respectively used for laser emitting and receiving, and the laser emitting optical path and the laser receiving optical path are respectively coaxial with the visible light path of the corresponding monocular imaging module, wherein the laser emitting module is used to emit pulsed laser to the detection target, and the laser signal reflected back by the detection target is received by the laser receiving module and used to calculate the distance information of the detection target, and the distance information is sent to the display module 40 for display. The distance information and/or the infrared image displayed in the display module 40 are finally transmitted to the rear end of the visible light path so as to be merged with the white light image.

The detection target may refer to an observation object located in the target field of view, such as an animal in a hunting scene. The binocular white light component 10 refers to an optical component that collects visible light signals in the target field of view to form a corresponding white light image. Taking the multi-mode binocular handheld optical device as a binocular handheld telescope as an example, the binocular white light component 10 may refer to a white light binocular component of the binocular handheld white light telescope.

Please refer to FIG. 2 , the human eye observation position can be set at the rear end of the visible light path of the binocular white light assembly 10, the left eye imaging module 161 and the right eye imaging module 162 can respectively include an eyepiece 18 set at the end of the visible light path, and the imaging surface of the white light image is respectively located in front of the eyepiece 18, and the left eye and the right eye of the person can respectively observe the image on the imaging surface at the eyepiece 18 of the left eye imaging module 161 and the right eye imaging module 162. By setting the laser emission light path of the laser emission module and the laser receiving light path of the laser receiving module to be coaxial with the two visible light paths of the binocular white light assembly 10, the overall product structure is more compact, and the white light imaging structure of the known binocular white light optical device can be used, simplifying the product design cost.

In the above embodiment, the multi-mode binocular handheld optical device includes a binocular white light component 10, an infrared component 30 and a laser component 20. The laser component 20 includes a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules 16. The emitting optical path and the receiving optical path of the laser are respectively arranged to share the optical paths of the two visible light paths in the binocular white light component 10. Under the premise of realizing the multi-mode of the handheld optical device, the structure can be made more compact, the overall volume can be effectively reduced, and the whole machine is small and easy to carry. Secondly, the display module 40 is respectively connected to the laser component 20 and the infrared component 30. The infrared component 30 converts the infrared light signal into an electrical signal of an infrared image and sends it to the display module 40 for display. The laser component 20 can send the distance information of the detection target to the display module 40 for display. By fusing the distance information and/or the infrared image displayed in the display module 40 with the white light image imaged by the visible light path, the infrared image and/or the ranging information is superimposed on the white light image. The structure is compact and the target highlighting ability can be enhanced for easy observation.

In some embodiments, the laser receiving module includes a laser receiving objective lens 25 disposed at the front end of the corresponding visible light path, and a first image relay beam splitter 15a is disposed in the corresponding visible light path, which is used to separate the visible light signal from the laser signal received by the laser receiving objective lens 25. The visible light signal can be transmitted through the first image relay beam splitter 15a and then imaged on the imaging surface behind the first image relay beam splitter 15a. When the laser signal passes through the first image relay beam splitter 15a, it is reflected by the first image relay beam splitter 15a and deviates from the visible light path, so that the laser signal can be used to calculate distance information after separation. In this way, through the arrangement of the first image relay beam splitter 15a in the visible light path, the first image relay beam splitter 15a is used to separate the laser signal and the visible light signal incident into it along the visible light path, so that the laser receiving optical path can share the visible light path of the binocular white light component 10 while retaining the independent imaging of the white light image and the laser ranging functions and simplifying the product structure.

Optionally, the display module 40 is located on a light incident side of the first image-relay beam splitter 15a, and the distance information and/or the infrared image displayed on the display module 40 are incident on the first image-relay beam splitter 15a in the form of light signals, and are reflected by the first image-relay beam splitter 15a to the rear end of the visible light path to be fused with the white light image. Specifically, the display module 40 may be an OLED (Organic Light-Emitting Diode) display screen 41, which is arranged on one side of the visible light path and corresponds to a light incident side of the first image-relay beam splitter 15a. The distance information and/or the infrared image displayed on the display module 40 are incident on the first image-relay beam splitter 15a in the form of light signals, forming a fusion light path that superimposes the distance measurement information of the laser component 20 and the infrared image formed by the infrared component 30 on the white light image of the binocular white light component 10, that is, a fusion light path of the distance information and the infrared image, and the fusion light path is parallel to the visible light path. The distance information and/or the light signal of the infrared image displayed on the OLED display screen 41 is reflected by the first image-relaying beam splitter 15 a to the rear end of the visible light path and merged with the white light image.

Among them, the multi-mode binocular handheld optical device includes multiple working modes, such as white light mode, laser ranging mode, infrared mode, white light ranging mode, infrared ranging mode, dual-light fusion mode, and dual-light fusion ranging mode.

The white light mode means that the laser component 20 and the infrared component 30 are both not working, and the target is observed and aimed at only through the binocular white light component 10. The visible light signal in the target field of view is transmitted along the two visible light paths of the binocular white light component 10 respectively. In the visible light path provided with the first image-relaying beam splitter 15a, the visible light signal After the signal is transmitted through the first image-relaying beam splitter 15a, an image is formed at the rear end of the visible light path. The left-eye imaging module 161 and the right-eye imaging module 162 respectively form a left-eye white light image and a right-eye white light image on the imaging surface at the rear end of the corresponding visible light path. The human eye directly observes the left-eye white light image and the right-eye white light image to complete the binocular white light image fusion.

The laser ranging mode means that both the binocular white light component 10 and the infrared component 30 are not working, the laser emitting module emits a pulse laser to the detection target, the laser signal reflected back by the detection target is received by the laser receiving module, and is transmitted along the visible light path where the laser receiving module is located to the first image relay beam splitter 15a, and the laser signal separated from the visible light signal is used to calculate the distance information of the detection target and displayed on the display module 40; or, after the laser component 20 displays the measured distance information on the display module 40, the distance information displayed on the display module 40 is incident on the first image relay beam splitter 15a along the fusion light path in the form of an optical signal, and is reflected by the first image relay beam splitter 15a and overlaps with the visible light path again by using the beam combining effect of the first image relay beam splitter 15a, and is displayed on the imaging surface at the rear end of the visible light path. The distance information corresponding to the display is displayed. It should be noted that a second image relay beam splitter 15b is also provided in the visible light path corresponding to the laser emission module, and the display module 40 can also be set corresponding to the second image relay beam splitter 15b. After the laser component 20 displays the measured distance information on the display module 40, the distance information displayed by the display module 40 is incident on the second image relay beam splitter 15b along the fusion light path in the form of an optical signal, and is used by the beam combining effect of the second image relay beam splitter 15b. After being reflected by the second image relay beam splitter 15b, it overlaps with the visible light path again, and the corresponding distance information is displayed on the imaging surface at the rear end of the visible light path. For the sake of simplicity in description, the application is subsequently described by taking the corresponding arrangement of the display module 40 and the first image relay beam splitter 15a as an example, but replacing the relationship between the display module 40 and the first image relay beam splitter 15a with the relationship between the display module 40 and the second image relay beam splitter 15b should also fall within the protection scope of the present application.

The white light ranging mode means that the infrared component 30 does not work, and the distance information measured by the laser component 20 can be displayed on the display module 40. The human eye can not only see the white light detection target through the eyepiece 18 of the binocular white light component 10, but also read the distance of the detection target from the display module 40; or, the white light ranging mode means that after the laser component 20 displays the measured distance information on the display module 40, the distance information displayed on the display module 40 is incident on the first image relay beam splitter 15a along the fusion light path in the form of a light signal, and after being reflected by the first image relay beam splitter 15a, it overlaps with the visible light path again, and the corresponding distance information is displayed on the imaging surface at the rear end of the visible light path, and the distance information is superimposed on the image of the white light detection target, and the human eye can directly observe the white light detection target with distance information through the eyepiece 18 of the binocular white light component 10.

The infrared mode means that the binocular white light component 10 and the laser component 20 are both not working, the infrared component 30 collects the infrared light signals in the target field of view and converts them into electrical signals and sends them to the display module 40 for display, the infrared image displayed by the display module 40 is incident on the first image relay beam splitter 15a along the fusion light path in the form of a light signal, and after being reflected by the first image relay beam splitter 15a, it coincides with the visible light path located at the rear end of the first image relay beam splitter 15a, and the corresponding infrared image is displayed on the imaging surface at the rear end of the visible light path, and the human eye can see the infrared detection target through the eyepiece 18.

Infrared ranging mode means that the binocular white light component 10 does not work and the infrared image output by the infrared component 30 The image is displayed on the display module 40, and the distance information measured by the laser component 20 can also be displayed on the display module 40. The infrared image superimposed with the distance information displayed in the display module 40 is reflected and projected onto the imaging surface of the white light image through the first image-relaying beam splitter 15a. The human eye can directly observe the infrared detection target with the distance information through the eyepiece 18 of the binocular white light component 10.

The dual-light fusion mode means that the laser component 20 does not work, and the infrared image output by the infrared component 30 is displayed in the display module 40. The infrared image displayed in the display module 40 is reflected and projected to the imaging surface at the rear end of the visible light path through the first image-relaying beam splitter 15a, and is fused with the imaging of the visible light signal passing through the first image-relaying beam splitter 15a on the imaging surface. The human eye directly observes the fused image through the eyepiece 18 of the binocular white light component 10. The infrared image can be highlighted in the area with high heat, allowing the user to better find and aim at the target.

The dual-light fusion ranging mode means that the binocular white light component 10, the infrared component 30 and the laser component 20 are all involved in the work, the infrared image output by the infrared component 30 is displayed in the display module 40, and the distance information measured by the laser component 20 can also be displayed on the display module 40. The infrared image superimposed with the distance information displayed in the display module 40 is reflected and projected to the imaging surface at the rear end of the visible light path through the first image relay beam splitter 15a, and is fused with the white light image of the visible light signal passing through the first image relay beam splitter 15a on the imaging surface. The human eye can directly observe the dual-light fusion image with distance information through the eyepiece 18 of the binocular white light component 10.

Optionally, the multi-mode binocular handheld optical device further includes a projection module 50 disposed between the first image relay beam splitter 15a and the display module 40, the projection module 50 being used to project the distance information and/or infrared image displayed on the display module 40 to the first image relay beam splitter 15a in the form of an optical signal, and reflected by the first image relay beam splitter 15a to the rear end corresponding to the visible light path. The projection module 50 is arranged opposite to the display module 40, and the light incident side of the display module 40, the projection module 50 and the first image relay beam splitter 15a together form a fusion light path. When the infrared mode is turned on, the infrared image displayed in the display module 40 is projected by the projection module 50 in the form of a light signal and incident on the first image relay beam splitter 15a, and is reflected by the first image relay beam splitter 15a to the rear end of the corresponding visible light path, and finally imaged on the imaging surface of the rear end of the corresponding visible light path; when the white light mode and the infrared mode are turned on at the same time, the projection module 50 projects the infrared image displayed in the display module 40 to the first image relay beam splitter 15a, and merges it with the white light image imaged on the imaging surface of the rear end of the corresponding visible light path. Optionally, the projection module 50 includes a projection condenser directly opposite to the display module 40 and a plurality of projection reflectors located on the side of the projection condenser away from the display module 40. After the optical signal of the image displayed in the display module 40 is converged by the projection condenser, a plurality of projection reflectors cooperate to change the emission path of the optical signal of the image emitted from the projection condenser, and reflect the optical signal of the image displayed in the display module 40 to the first image relay beam splitter 15a, so that the projection module 50 projects the image displayed in the display module 40 to the first image relay beam splitter 15a. When the display module 40 and the second image relay beam splitter 15b are correspondingly arranged, the projection module 50 is arranged between the second image relay beam splitter 15b and the display module 40, and is used to project the distance information and/or infrared image displayed on the display module 40 to the second image relay beam splitter 15b in the form of an optical signal, and reflect the second image relay beam splitter 15b to the rear end of the corresponding visible light path, and the details are not repeated. In this embodiment, the arrangement of the projection module 50 can play a more precise role in regulating the transmission direction of the light in the fusion light path, thereby reducing light loss.

Optionally, the infrared component 30 includes an infrared lens group 33 and an infrared core 34 arranged in sequence along the infrared optical path, and the infrared core 34 is connected to the display module 40; the infrared lens group 33 is used to collect infrared light signals in the target field of view, and the infrared core 34 is used to convert the infrared light signals into electrical signals and send them to the display module 40 to display the corresponding infrared image. The multi-mode binocular handheld optical device can define an infrared channel 31 through an infrared lens barrel, and an infrared light path is formed in the infrared channel 31. An infrared light entrance window can be set at the front end of the infrared channel 31, and the infrared lens group 33 is set at a position corresponding to the infrared light entrance window. The infrared lens group 33 and the infrared core 34 are sequentially arranged in the infrared light path. The infrared lens group 33 can filter out other light except the infrared light signal to reduce the interference of other light on the infrared image imaging. The infrared core 34 and the display module 40 can be electrically connected via a flexible flat cable. The infrared image displayed in the display module 40 can be projected by the projection module 50 in the form of an optical signal and incident on the first image-relaying beam splitter 15a, and then reflected by the first image-relaying beam splitter 15a to the rear end of the visible light path where it is located.

In other embodiments, please refer to FIG. 3 , the display module 40 is a transparent display screen 42 disposed in the visible light path of one of the left-eye imaging module 161 and the right-eye imaging module 162; the visible light signal is transmitted through the transparent display screen 42 and is fused with the distance information and/or the infrared image displayed on the transparent display screen 42. The transparent display screen 42 may be a transparent OLED display screen, through which the visible light signal can be transmitted. The transparent display screen 42 is directly disposed in the visible light path corresponding to the left-eye imaging module 161, or in the visible light path corresponding to the right-eye imaging module 162, and the visible light signal forming the white light image is transmitted through the transparent display screen 42 and is fused with the infrared image and/or the distance information displayed on the transparent display screen 42. Among them, by setting the transparent display screen 42 in one of the visible light paths of the binocular white light component 10, the infrared image imaged by the infrared component 30 and the distance information obtained by the laser component 20 can be directly fused with the white light image through the transparent display screen 42. The image fusion is completed directly in the visible light path, thereby eliminating the setting of the fusion light path and further simplifying the product structure.

Optionally, the transparent display screen 42 may include light-transmitting pixels, which are used to allow visible light signals passing through the transparent display screen 42 in the visible light path to pass through, and form a white light image on the imaging surface at the rear end of the visible light path. In this embodiment, the structure of the light-transmitting pixels of the transparent display screen 42 is not limited, and it is sufficient to achieve the transmission of visible light signals. Optionally, the light-transmitting pixels may include a light-transmitting medium, and the light-transmitting medium does not affect the image displayed on the display screen. Preferably, the light-transmitting medium may adopt an optical medium material with high light transmittance, so that the light incident on the light-transmitting pixels can be efficiently transmitted. Optionally, the light-transmitting pixels of the transparent display screen 42 may also be light-transmitting holes, which allow image light incident on the light-transmitting pixels of the transparent display screen 42 to pass through. Further, the transparent display screen 42 may include display pixels, which are used to emit light, so that the transparent display screen 42 displays infrared images and/or distance information. In this embodiment, the structure of the display pixels of the transparent display screen 42 is not limited. In actual applications, it can be set according to imaging requirements. For example, the transparent display screen 42 can control the display pixels to emit light according to the infrared image electrical signal imaged by the infrared component 30, so that the transparent display screen 42 displays the infrared image. Optionally, the display pixels of the transparent display screen 42 may include three primary color pixels, so that the infrared image generated by the transparent display screen 42 contains colors and is more in line with the natural form of the object. Optionally, the display pixels may adopt but are not limited to organic light emitting semiconductors (OLEDs) or light emitting diodes (LEDs). In an optional example, the transparent display screen 42 may include arranged pixel units, each pixel unit including a transparent pixel and a display pixel, the transparent pixel is used to transmit the visible light signal through the transparent display screen 42, and the display pixel is used to emit light, so that the transparent display screen 42 projects an infrared image. The infrared image formed by the component 30. The transparent display screen 42 uses pixel units, each of which includes a light-transmitting pixel and a display pixel, so that the visible light signal forming the white light image and the infrared image displayed by the transparent display screen 42 can be fused at the pixel level, which can improve the fusion effect of the two images, and can improve the image quality of the white light and infrared dual-light fusion image observed through the eyepiece 18, thereby improving the user experience.

Optionally, please refer to Figures 2 and 4 in combination. The laser emission module includes a laser emitter 21 (Laser Diode, LD) disposed on one side of the corresponding visible light path. A second image-relay beam splitter 15b for receiving the pulsed laser emitted by the laser emitter 21 is disposed in the corresponding visible light path. The pulsed laser emitted by the laser emitter 21 is incident on the second image-relay beam splitter 15b, and after being reflected by the second image-relay beam splitter 15b, it is emitted toward the detection target along the corresponding visible light path in the opposite direction to the incident direction of the visible light signal. The laser signal reflected back by the detection target is received by the laser receiving module. Among them, the visible light signal in the target field of view is incident and then emitted toward the second image-relay beam splitter 15b along the corresponding visible light path. After being transmitted through the second image-relay beam splitter 15b, it forms a white light image at the rear end of the corresponding visible light path. In this way, the laser signal incident on the visible light path corresponding to the laser emitter 21 is reflected by the second image-relaying beam splitter 15b to the coaxial line with the visible light path by the laser emitter 21 located on one side of the visible light path, and is emitted in the opposite direction along the visible light path, so that the laser emission light path can share the visible light path of the binocular white light assembly 10, while retaining the functions of independent imaging of white light images and laser ranging and simplifying the product structure. In the embodiment shown in FIG2 , the first image-relaying beam splitter 15a and the second image-relaying beam splitter 15b are respectively arranged in the visible light path of the left-eye imaging module 161 and the right-eye imaging module 162, the laser receiving objective lens 25 is arranged in front of the first image-relaying beam splitter 15a in the visible light path of the left-eye imaging module 161, and the laser emitter 21 is arranged on one side of the second image-relaying beam splitter 15b in the visible light path of the right-eye imaging module 162.

It should be noted that, in the binocular white light assembly 10, the structures of the left-eye imaging module 161 and the right-eye imaging module 162 may be different. As shown in FIG3 , the difference between the left-eye imaging module 161 and the right-eye imaging module 162 is that only one of them has a transparent display screen 42 in the visible light path, while the other visible light path is not provided with a transparent display screen 42. In an optional example, as shown in FIG3 , the transparent display screen 42 is provided in the visible light path where the laser receiving objective lens 25 is located, and is located behind the first image-relaying beam splitter 15a. In other embodiments, as shown in FIG. 2 , the structures of the left-eye imaging module 161 and the right-eye imaging module 162 may also be the same, for example, a first image relay beam splitter 15a and a second image relay beam splitter 15b are respectively provided in the visible light paths of the left-eye imaging module 161 and the right-eye imaging module 162, and the display module 40 adopts an OLED display screen provided on one side of the visible light path. The infrared image and/or distance information displayed in the display module 40 is then incident on the image relay beam splitter in one of the visible light paths of the binocular white light assembly 10 in the form of an optical signal along the fusion optical path, and after being reflected by the image relay beam splitter, it coincides with the visible light path and is fused with the white light image on the imaging surface at the rear end of the visible light path.

Optionally, the left-eye imaging module 161 and the right-eye imaging module 162 respectively include a white light entrance window located at the front end of the visible light path, a white light objective lens 13 disposed at the white light entrance window, and an eyepiece 18 disposed at the rear end of the visible light path, and the laser emission module also includes a laser emission objective lens 22 disposed at the corresponding front end of the visible light path, and the laser emission objective lens 22 and the laser receiving objective lens 25 are respectively coaxial with the corresponding white light objective lens 13. Among them, the laser receiving objective lens 25 is disposed at the white light entrance window at the front end of the left-eye imaging module 161, and a first image splitter is disposed in front of the eyepiece 18 in the visible light path of the left-eye imaging module 161. When the white light mode of the optical lens 15a is turned on, the visible light signals in the target field of view are collected by the white light objective lens 13 at the white light entrance windows of the left eye imaging module 161 and the right eye imaging module 162 respectively, and emitted to the eyepiece 18 at the rear along the visible light path. When the laser ranging mode is turned on, the laser transmitter 21 emits a pulsed laser, which is reflected by the second image-relaying beam splitter 15b of the right-eye imaging module 162 located in the emission direction of the pulsed laser, and then emitted to the laser emitting objective lens 22 along the visible light path of the right-eye imaging module 162 and in the opposite direction of the incident visible light. The laser emitting objective lens 22 can collect the pulsed laser emitted along the visible light path after being reflected by the second image-relaying beam splitter 15b, so that the pulsed laser can be transmitted through the white light objective lens 13 at the front end of the right-eye imaging module 162 and then emitted to the detection target in the target field of view (Figure 4); the laser signal reflected back by the detection target in the target field of view is collected by the laser receiving objective lens 25 at the white light entrance window of the left-eye imaging module 161, and emitted to the first image-relaying beam splitter 15a in the left-eye imaging module 161 along the visible light path of the left-eye imaging module 161. If the white light mode and the laser ranging mode are turned on at the same time, the optical paths under the white light mode and the laser ranging mode are formed independently. After the white light objective lens of the left-eye imaging module 161 is incident, the incident visible light signal and the laser signal are split by the first image-relaying spectroscope 15a, so that a preset proportion of the visible light signal is transmitted and imaged at the rear end of the visible light path, and the laser signal is deviated from the visible light path after reflection, so as to calculate the distance information of the detected target.

Optionally, the laser receiving module also includes a laser signal processing module on a light-emitting side of the first image-relay beam splitter 15a in the left-eye imaging module 161. After the laser signal reflected back by the detection target is received by the laser receiving objective lens 25, it is transmitted along the visible light path where the laser receiving objective lens 25 is located to the first image-relay beam splitter 15a, and after being split by the first image-relay beam splitter 15a, it is emitted to the laser signal processing module, and the laser signal processing module calculates the distance information of the detection target. Among them, the laser signal processing module is arranged in the direction of the laser signal reflected and deviated by the first image-relay beam splitter 15a, and the laser signal processing module can be electrically connected to the display module 40 by means of a flexible flat cable, and receives the laser signal and calculates the distance information and then sends it to the display module 40 for display.

The laser signal processing module includes a photoelectric detector 24 on a light-emitting side of the first image-relay beam splitter 15a in the left-eye imaging module 161 and a laser signal processor 23 electrically connected to the photoelectric detector 24; the laser transmitter 21 emits a pulsed laser to the detection target, and the laser signal reflected back by the detection target is collected by the laser receiving objective lens 25, and emitted to the first image-relay beam splitter 15a along the corresponding visible light path, and reflected to the photoelectric detector 24 by the first image-relay beam splitter 15a. The photoelectric detector 24 converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor 23, and the laser signal processor 23 calculates the distance information between the detection target and the detection target. When the laser ranging mode is turned on, the laser signal processor 23 can send a control signal to the laser transmitter 21 according to the user's operation of turning on the laser ranging function. The laser transmitter 21 emits a pulsed laser, which is reflected by the second image-relaying beam splitter 15b in the right-eye image-relaying beam splitter 162 and then emitted to the detection target along the visible light path. The laser signal reflected back by the detection target is collected by the laser receiving objective lens 25 located at the white light entrance window of the left-eye imaging module 161, and emitted to the first image-relaying beam splitter 15a along the corresponding visible light path. After being reflected by the first image-relaying beam splitter 15a in the left-eye imaging module 161, it deviates from the corresponding visible light path and is emitted to the photodetector 24. The photodetector 24 converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor 23. In the embodiment of the present application, by setting the second image-relaying beam splitter 15b in the visible light path of the right-eye imaging module 162, The beam combining effect of the second image-relay beam splitter 15b realizes the design of making the laser emission optical path and the visible light optical path of the right-eye imaging module 162 share the same optical path; by setting the first image-relay beam splitter 15a in the visible light path of the left-eye imaging module 161, and by the light splitting effect of the first image-relay beam splitter 15a, the design of making the laser receiving optical path and the visible light optical path of the left-eye imaging module 161 share the same optical path is realized; wherein, the second image-relay beam splitter 15b is arranged in the emission direction of the pulsed laser emitted by the laser emitter 21, and the photoelectric detector 24 is arranged in the emission direction of the laser signal after reflection and separation by the first image-relay beam splitter 15a, that is, the relative position between the laser emitter 21 and the second image-relay beam splitter 15b in the right-eye imaging module 162, and the relative position between the photoelectric detector 24 and the first image-relay beam splitter 15a in the left-eye imaging module 161 are the same, and the laser emission optical path and the laser receiving optical path are two optical paths in opposite directions.

The multi-mode binocular handheld optical device further comprises a main control board 60 connected to the infrared component 30, the laser component 20 and the display module 40 respectively, the main control board 60 receives the electric signal converted from the infrared light signal sent by the infrared component 30 and/or the distance information sent by the laser component 20, and controls the display module 40 to display the corresponding infrared image and/or the distance information. Optionally, an image processing chip and a display interface are provided on the main control board 60, the display module 40 is electrically connected to the display interface, and the image processing chip is used to process the infrared image according to the current image processing mode. The image processing chip may include a series of image processing algorithms, such as image processing algorithms for enhancing, scaling, and denoising infrared images, and different image processing algorithms may correspond to different image processing modes respectively. An image mode button for selecting an image processing mode may be provided on the housing of the multi-mode binocular handheld optical device, and the user may select the desired mode for processing the infrared image by operating the image mode button. The main control board 60 can be connected to the display interface and the display module 40 through a flexible cable, so as to convert the image processed by the image processing algorithm into a clear infrared image output and display it on the display module 40. Optionally, the main control board 60 can be provided with a control circuit for controlling the operation of the laser assembly 20, which is used to detect the user's operation of turning on the laser ranging function and receive the laser ranging request, and control the laser assembly 20 to emit pulsed laser to achieve ranging.

Among them, the laser signal processor 23 is electrically connected to the main control board 60, and the laser receiving objective lens 25 is arranged at the white light entrance window of the binocular white light component 10. The laser signal processor 23 is used to calculate the distance information between the detection target according to the emission time of the pulsed laser emitted by the laser transmitter 21, the receiving time of the reflected laser signal received by the laser receiving objective lens 25 and the laser propagation speed. The main control board 60 sends the distance information to the display module 40 through the display interface, and controls the display module 40 to display the distance information. The photodetector 24 may be an APD (Avalanche Photo Diode), and the laser receiving objective lens 25 is disposed at the position corresponding to the white light entrance window, so as to realize the common optical path design of the laser receiving optical path and the corresponding visible light optical path, and then realize the splitting of the visible light signal and the laser signal by setting the first image-relay beam splitter 15a in the corresponding visible light optical path. The separated lasers are converged by the photodetector 24 located on one side of the first image-relay beam splitter 15a, and the echo signal output by the photodetector 24 is sent to the laser signal processor 23 after amplification and signal processing, and the laser signal processor 23 calculates the distance information of the detected target. Optionally, the laser signal processor 23 includes a counter and a laser signal processing circuit, and after the counter completes counting according to the echo signal output by the photodetector 24, the counter sends the counting information to the laser signal processing circuit, so that the laser signal processing circuit can solve the distance information, and then sends the distance information to the main control board 60, and the main control board 60 controls the display module 40 to display the distance information. In the selected specific example, a laser button for controlling the laser emitter 21 to emit pulsed laser may be provided on the housing of the multi-mode binocular handheld optical device. The main control board 60 receives a distance request signal according to the user's operation of the laser button, and controls the laser component 20 to start the laser ranging function based on the distance request signal.

Optionally, please refer to FIG5 , the first image-relay beam splitter 15a and the second image-relay beam splitter 15b have the same structure. Taking the first image-relay beam splitter 15a as an example, the first image-relay beam splitter 15a is composed of a Behan prism and a half-pentaprism; the Behan prism includes an incident surface 151, a first edge reflection surface 154, an exit surface 152, a second edge reflection surface 157 arranged in sequence, and an intermediate reflection surface 153 located between the incident surface 151 and the exit surface 152 and inclined; wherein the incident surface 151 faces the incident direction of the visible light, the exit surface 152 is parallel to the incident surface 151 and is located at the rear end of the visible light path, and the second edge reflection surface 157 is connected to the half-pentaprism; the half-pentaprism is arranged on the side of the Behan prism close to the infrared component 30, and the half-pentaprism includes a light incident surface 155 facing the display module 40 and a light exit surface 156 facing the photodetector 24 in the laser component 20. In an optional specific example, the Behan prism includes a first prism and a second prism separated by an air gap, the intermediate reflection surface 153 includes two separated to form the air gap, the incident surface 151, the first edge reflection surface 154 and one of the intermediate reflection surfaces 153 are surfaces of the first prism, and the exit surface 152, the second edge reflection surface 157 and the other intermediate reflection surface 153 are surfaces of the second prism. In this embodiment, the first image relay beam splitter 15a in the left-eye imaging module 161 and the second image relay beam splitter 15b in the right-eye imaging module 162 have the same structure. For the first image relay beam splitter 15a located in the visible light path where the laser receiving objective lens 25 is located, the light exit surface 156 of the first image relay beam splitter 15a is directly opposite to the photodetector 24; for the second image relay beam splitter 15b in the visible light path corresponding to the laser emitter 21, the light exit surface 156 of the second image relay beam splitter 15b is directly opposite to the laser emitter 21. In different working modes of the multi-mode binocular handheld optical device, the imaging optical paths of the white light component 10, the laser component 20 and the infrared component 30 can be relatively independent. When multiple working modes are compounded and enabled, the corresponding imaging optical paths are compounded through the image transfer spectroscope to achieve the purpose of common optical path design and multi-mode fusion.

Optionally, the multi-mode binocular handheld optical device can be limited by the main lens barrel to form a left eye white light channel 161 and a right eye white light channel 162 of the binocular white light assembly 10, and the left eye white light channel 161 and the right eye white light channel 162 are parallel to each other and extend respectively along the front and rear directions of the multi-mode binocular handheld optical device. The two visible light paths of the binocular white light assembly 10 are respectively formed in the white light channels corresponding to the left eye and the right eye, and the white light entrance window is arranged at the front end of the white light channel, and the image transfer spectroscope corresponding to the visible light path is arranged in the white light channel at a position relatively closer to the eyepiece 18. The emission light path and the receiving light path of the laser signal are respectively integrated in front of the binocular white light channels of the binocular white light assembly 10, and the laser receiving light path is located in the white light channel, which can completely overlap with the corresponding visible light path, or can also partially overlap, so as to realize the common light path design with the visible light path. By setting up the image-relay spectrometer in the white light channel, the white light mode and the laser ranging mode can be turned on independently or simultaneously to meet the needs of different scenarios. Secondly, the laser receiving optical path and the visible light optical path adopt a common optical path design. Under the premise of realizing the multi-mode of handheld optical devices, the structure is more compact, which can effectively reduce the overall volume and make the whole machine small and easy to carry.

The multi-mode binocular handheld optical device can be provided with a main lens barrel and an infrared lens barrel connected as one body, two white light entrance windows are located in parallel at the front end of the multi-mode binocular handheld optical device, the infrared light entrance window and the white light entrance window are located on the same vertical plane, and the infrared channel 31, the left eye white light channel 161 and the right eye white light channel 162 are parallel to each other and extend along the front-to-back direction of the multi-mode binocular handheld optical device. The two white light objective lenses 13 are respectively arranged at the positions of the white light entrance windows, and the infrared objective lens group 33 is arranged at the positions corresponding to the infrared light entrance windows, respectively used to gather more visible light and infrared light in the target field of view that are irradiated to the white light entrance windows and the infrared light entrance windows. The left-eye white light channel 161 and the right-eye white light channel 162 are arranged in parallel and horizontally aligned with the left eye and the right eye of the person, respectively. The infrared channel 31 can be arranged above the left-eye white light channel 161 and the right-eye white light channel 162. The binocular white light component 10, the laser component 20 and the infrared component 30 are integrated into one body by connecting the main lens barrel and the infrared lens barrel. The internal spaces of the main lens barrel and the infrared lens barrel are connected. A left-eye white light imaging optical path for visible light of the left eye to pass through and form an image, a right-eye white light imaging optical path for visible light of the right eye to pass through and form an image, an infrared imaging optical path for infrared light to pass through and form an image, and a laser ranging optical path that shares an optical path with the visible light optical path of the left eye or the right eye are formed inside the multi-mode binocular handheld optical device.

The left eye white light imaging optical path of the binocular white light assembly 10, taking the laser receiving objective lens 25 set at the white light entrance window of the left eye as an example, as shown in Figures 3 and 5, the incident direction of the visible light is the same as the incident direction of the laser signal reflected by the detection target, and the visible light incident into the left eye white light channel 161 is emitted to the incident surface 151 of the first image transfer spectroscope 15a, and enters the Bihan prism after passing through the incident surface 151, and is transmitted through the Bihan prism and emitted from the exit surface 152 to form a white light image at the rear end of the corresponding visible light path. In a specific example, the visible light is incident into the Bihan prism from the incident surface 151, and the preset proportion of the visible light is sequentially transmitted through the intermediate reflection surface 153 and the exit surface 152, and then emitted from the exit surface 152 of the Bihan prism to the rear end of the visible light path. Among them, the preset proportion can be set according to the brightness requirement of the white light image, such as the preset proportion can be 60%.

The right-eye white light imaging optical path of the binocular white light assembly 10 is the same as the left-eye white light imaging optical path ( FIG. 2 ).

Infrared imaging optical path, the infrared light signal incident into the infrared channel 31 is converted into an electrical signal by the infrared core 34 and sent to the display module 40, and the display module 40 displays the corresponding infrared image according to the electrical signal. Please refer to FIG6, if the multi-mode binocular handheld optical device adopts the design that the OLED display screen 41 is arranged on the side of the visible light optical path where the laser receiving objective lens 25 is located, the infrared image displayed in the OLED display screen 41 is projected by the projection module 50, and is incident from the light incident surface 155 of the semi-penta prism to the light exit surface 156 in the form of a light signal, and is reflected from the light exit surface 156 to the Bihan prism, and enters the Bihan prism from the second edge reflection surface 157 of the Bihan prism, and after being reflected by the middle reflection surface 153 of the Bihan prism, it is emitted from the exit surface 152 to the rear end of the visible light optical path. For the convenience of description, the infrared image of the display module 40 is emitted to the human eye observation position at the rear end of the visible light optical path through the projection module 50 and the first image transfer spectroscope 15a, and this section of the optical path is called the fusion optical path.

Laser ranging optical path, the laser transmitter 21 emits a pulsed laser, the pulsed laser is incident on the second image relay beam splitter 15b, and is reflected by the second image relay beam splitter 15b to coincide with the visible light path in the right eye imaging optical path, wherein the portion of the optical path where the pulsed laser is reflected by the second image relay beam splitter 15b and is emitted outward along the corresponding visible light path is called the laser emission optical path. After the laser transmitter 21 emits the pulsed laser, the pulsed laser is combined by the second image relay beam splitter 15b, and after multiple reflections in the second image relay beam splitter 15b, it passes through the incident surface 151 and is emitted toward the detection target in the opposite direction of the visible light path; in an optional specific example, the pulsed laser sequentially passes through the light emitting surface 156 and the second edge reflection surface 157 and then is incident on the Behan prism, and in the Behan prism, it first passes through the intermediate reflection surface 153, and then sequentially passes through the incident surface 151. After being reflected by the first edge reflection surface 151, the first edge reflection surface 154 and the intermediate reflection surface 153, the laser signal passes through the incident surface 151 and is emitted in the opposite direction of the visible light path. The laser receiving objective lens 25 collects the laser signal reflected back by the detection target, and the laser signal is incident on the incident surface 151 of the first image-relay beam splitter 15a. This part of the optical path is called the laser receiving optical path, which coincides with the visible light path in the left eye imaging optical path. In the laser receiving optical path, the laser signal is split by the first image-relay beam splitter 15a, and after multiple reflections inside the Bihan prism, it is emitted to the second edge reflection surface 157 close to the semi-pentaprism, and is transmitted through the semi-pentaprism and emitted from the light exiting surface 156 of the semi-pentaprism to the photodetector 24. In an optional specific example, after the laser signal is incident from the incident surface 151 to the Bihan prism, it is reflected by the intermediate reflection surface 153, the first edge reflection surface 154, and the incident surface 151 in sequence, and then emitted to the intermediate reflection surface 153, and then successively transmitted through the intermediate reflection surface 153, the second edge reflection surface 157 and the light-emitting surface 156, and is used to calculate distance information.

After the laser signal is converged and processed by the photodetector 24 and the laser signal processor 23, the calculated distance information is displayed in the display module 40. As shown in FIG6, if the multi-mode binocular handheld optical device is designed to use an OLED display screen 41 disposed on one side of the visible light path where the laser receiving objective lens 25 is located, the distance information displayed in the OLED display screen 41 is projected by the projection module 50, and is incident from the light incident surface 155 of the semi-pentaprism to the light exit surface 156 in the form of a light signal, and is reflected from the light exit surface 156 to the Bihan prism, and enters the Bihan prism from the second edge reflection surface 157 of the Bihan prism, and after being reflected by the middle reflection surface 153 of the Bihan prism, it is emitted from the exit surface 152 to the rear end of the visible light path, and this part of the light path coincides with the fusion light path of the infrared image. In this way, by designing the distance measurement light path of the laser component 20 to partially coincide with the binocular white light component 10, and partially coincide with the infrared component 30, the compactness of the overall structure of the multi-mode binocular handheld optical device is greatly improved under the premise of realizing multi-mode.

In other optional embodiments, the multi-mode binocular handheld optical device adopts a structural design in which a transparent display screen 42 is set in the visible light path. In this way, when the visible light signal that forms the white light image is transmitted through the transparent display screen 42, it is superimposed and fused with the infrared image and/or distance information displayed in the transparent display screen 42. Accordingly, in the infrared imaging light path and the laser ranging light path, the section of the fusion light path formed by the OLED display screen 41, the projection module 50 and the first image relay spectroscope 15a can be omitted.

Optionally, a filter lens cover is provided on the outside of the front end of the visible light path of the left-eye imaging module 161 and the right-eye imaging module 162. When the lens cover is provided on the white light channel, it is used to filter out visible light and allow the laser signal to pass through. By setting the lens cover with a filter, when the lens cover is closed, visible light cannot enter the white light channel from the white light entrance window. In this way, the white light mode of the multi-mode binocular handheld optical device can be turned off by closing the lens cover. At this time, the user can still independently turn on the laser ranging mode by operating the laser button, or independently turn on the infrared mode by operating the power button of the multi-mode binocular handheld optical device, or operate the laser button and the power button to simultaneously turn on the laser ranging function and the infrared ranging mode of the infrared function, etc., to meet the needs of different application scenarios. When the user needs to turn on the white light mode, the lens cover can be directly opened.

The multi-mode binocular handheld optical device provided in the embodiment of the present application has at least the following characteristics:

First, the binocular white light component 10, the infrared component 30 and the laser component 20 are integrated into one to form a multi-mode binocular handheld optical device that can be applied to a variety of application scenarios, wherein the laser emission module, The laser receiving module is respectively arranged corresponding to the left-eye imaging module 161 and the right-eye imaging module 162, so that the original structural layout of the known binocular white light imaging assembly can be used to realize the design of the laser receiving optical path and the laser emitting optical path as a common optical path with two visible light optical paths; by setting an image transfer spectroscope in the visible light optical path, the visible light signal and the laser signal in the same optical path are split, so as to realize the relative independence of the laser ranging function and the visible light imaging function;

Second, the multi-mode binocular handheld optical device can support multiple working modes: white light mode, infrared mode, laser ranging mode, dual-light fusion mode, white light ranging mode, dual-light fusion ranging mode, and the user can select the current working mode of the multi-mode binocular handheld optical device according to actual application requirements;

The multi-mode binocular handheld optical device can be a multi-spectral fusion binocular telescope. When the multi-spectral fusion binocular telescope is not turned on or not connected to a power source, the laser component 20 and the infrared component 30 do not work, and the binocular white light component 10 can still work independently. The user can observe the target through the white light image from the eyepiece 18, and can downgrade to use the white light telescope to observe and search for targets during the day; at the same time, when used at night or in the jungle under insufficient light, the fusion mode can be turned on to highlight the target and enhance the search capability; it can also use only the infrared mode for observation and search at night to lock the target distance, that is, to realize a telescope that can be used for true all-weather observation and search.

Third, the front end of the white light channel of the binocular white light component 10 adopts a lens cover with a filter. In the infrared mode or the infrared ranging mode, the lens cover can be closed. At this time, the ranging function of the laser component 20 can still be maintained, and the laser ranging information and the infrared image can be displayed in the display module 40. The user can observe the infrared image or the infrared image with laser ranging information from the eyepiece 18.

Fourth, the image-transmitting beam splitter is composed of a Bihan prism and a half pentaprism. The image-transmitting beam splitter can realize light splitting and light combining, so that when visible light and laser share the white light channel, a preset proportion of visible light is allowed to pass through and form an image on the imaging surface, and the laser is allowed to pass through and then reflect to the detector located on one side of the image-transmitting beam splitter for calculating distance information.

Fifth, the binocular white light component 10 can choose fixed magnification, continuous variable magnification, or white light binoculars of different specifications that are compatible with fixed magnification and continuous variable magnification. The laser component 20 and infrared component 30 designed with a common optical path are combined with white light telescopes of different specifications to achieve precise target fusion, thereby enhancing the target highlighting capability and thus enhancing the search capability to meet the needs of different users.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

A multi-mode binocular handheld optical device, characterized by comprising a binocular white light component (10), a laser component (20), an infrared component (30) and a display module (40);

The binocular white light assembly (10) comprises two monocular imaging modules (16) respectively arranged corresponding to the left eye and the right eye, and used for receiving visible light signals in the target field of view and then generating white light images at the rear ends of the corresponding visible light paths;

The infrared component (30) is electrically connected to the display module (40) and is used for receiving infrared light signals within the target field of view, converting them into infrared image signals, and then sending them to the display module (40) to display the corresponding infrared image;

The laser assembly (20) is electrically connected to the display module (40), and comprises a laser emitting module and a laser receiving module respectively arranged corresponding to the two monocular imaging modules (16), and respectively used for laser emitting and receiving, and the laser emitting optical path and the laser receiving optical path are respectively coaxial with the visible light optical path of the corresponding monocular imaging module (16); wherein the laser emitting module emits a pulsed laser to the detection target, and the laser signal reflected back by the detection target is received by the laser receiving module and used to calculate the distance information of the detection target, and the distance information is sent to the display module (40) for display;

The distance information and/or the infrared image displayed in the display module (40) is ultimately transmitted to the rear end of the visible light path so as to be merged with the white light image.
The multi-mode binocular handheld optical device according to claim 1, characterized in that the laser receiving module comprises a laser receiving object disposed at a front end corresponding to the visible light path. A mirror (25) is also provided in the visible light path corresponding to a first image-relaying beam splitter (15a), which is used to separate the visible light signal from the laser signal received by the laser receiving objective lens (25);

The visible light signal is transmitted through the first image-relay beam splitter (15a) to form a white light image at the rear end of the corresponding visible light path, and the laser signal received by the laser receiving objective lens (25) is reflected by the first image-relay beam splitter (15a) and deviates from the corresponding visible light path and is used to calculate distance information.
The multi-mode binocular handheld optical device according to claim 2, characterized in that the display module (40) is located on a light incident side of the first image relay beam splitter (15a), and the distance information and/or the infrared image displayed on the display module (40) are incident on the first image relay beam splitter (15a) in the form of a light signal, and are reflected by the first image relay beam splitter (15a) to the rear end of the visible light path to be merged with the white light image.
The multi-mode binocular handheld optical device according to claim 3, characterized in that the multi-mode binocular handheld optical device also includes a projection module (50) arranged between the first image relay beam splitter (15a) and the display module (40), and the projection module (50) is used to project the distance information and/or the infrared image displayed on the display module (40) to the first image relay beam splitter (15a) in the form of a light signal, and reflect the first image relay beam splitter (15a) to the rear end of the visible light path.
The multi-mode binocular handheld optical device according to claim 1, characterized in that the infrared component (30) comprises an infrared objective lens group (33) and an infrared core (34) arranged in sequence along the infrared optical path, and the infrared core (34) is connected to the display module (40); the infrared objective lens group (33) is used to collect infrared light signals within the target field of view, and the infrared core (34) is connected to the display module (40). The infrared core (34) is used to convert the infrared light signal into an electrical signal and send it to the display module (40) to display the corresponding infrared image.
The multi-mode binocular handheld optical device according to claim 1, characterized in that the display module (40) is a transparent display screen (42) arranged in the visible light path of any monocular imaging module (16);

The visible light signal is transmitted through the transparent display screen (42) and is merged with the distance information and/or the infrared image displayed on the transparent display screen (42).
The multi-mode binocular handheld optical device according to claim 1, characterized in that the laser emission module includes a laser emitter (21) arranged on one side corresponding to the visible light path, and a second image-relay beam splitter (15b) located in the emission direction of the pulsed laser emitted by the laser emitter (21) is arranged in the corresponding visible light path, the pulsed laser emitted by the laser emitter (21) is incident on the second image-relay beam splitter (15b), and after being reflected by the second image-relay beam splitter (15b), it is emitted toward the detection target along the corresponding visible light path in the opposite direction to the incident direction of the visible light signal, and the laser signal reflected back by the detection target is received by the laser receiving module;

The visible light signal in the target field of view is incident and then emitted toward the second image-relaying beam splitter (15b) along the corresponding visible light path, and after being transmitted through the second image-relaying beam splitter (15b), forms a white light image at the rear end corresponding to the visible light path.
The multi-mode binocular handheld optical device according to claim 2, characterized in that the monocular imaging module (16) includes a white light objective lens (13) located at the front end of the visible light path and an eyepiece (18) located at the rear end of the visible light path, and the laser emission module also includes a Corresponding to the laser emitting objective lens (22) at the front end of the visible light path, the laser emitting objective lens (22) and the laser receiving objective lens (25) are respectively coaxial with the corresponding white light objective lens (13).
The multi-mode binocular handheld optical device according to claim 2, characterized in that the laser receiving module further comprises a photodetector (24) disposed on a light-emitting side of the first image-relaying beam splitter (15a) and a laser signal processor (23) electrically connected to the photodetector (24);

The laser signal reflected back by the detection target is collected by the laser receiving objective lens (25), emitted to the first image-relay beam splitter (15a) along the corresponding visible light path, and reflected to the photoelectric detector (24) by the first image-relay beam splitter (15a). The photoelectric detector (24) converts the laser signal reflected back by the detection target into an electrical signal and transmits it to the laser signal processor (23). The laser signal processor (23) calculates the distance information to the detection target.
The multi-mode binocular handheld optical device according to claim 2, characterized in that the first image-relaying beam splitter (15a) is composed of a Pechan prism and a half pentaprism;

The Behan prism comprises an incident surface (151), a first edge reflection surface (154), an exit surface (152), a second edge reflection surface (157) which are arranged in sequence, and an intermediate reflection surface (153) which is located between the incident surface (151) and the exit surface (152) and is arranged obliquely; wherein the incident surface (151) faces the incident direction of the visible light, the exit surface (152) is parallel to the incident surface (151) and is located at the rear end corresponding to the visible light path, and the second edge reflection surface (157) is connected to the semi-pentaprism;

The half pentaprism is arranged on a side of the Behan prism close to the infrared component (30). The semi-penta prism comprises a light incident surface (155) and a light emitting surface (156), wherein the light incident surface (155) faces the display module (40);

The visible light signal is incident on the Behan prism from the incident surface (151), is transmitted through the Behan prism and is emitted from the emission surface (152), and forms a white light image at the rear end of the corresponding visible light path; the laser signal is incident on the Behan prism from the incident surface (151), is reflected multiple times by the intermediate reflection surface (153), the first edge reflection surface (154), and the incident surface (151), and is emitted from the light exit surface (156) of the semi-pentaprism, and is used to calculate distance information.
The multi-mode binocular handheld optical device according to claim 1 is characterized in that the multi-mode binocular handheld optical device also includes a main control board (60) connected to the infrared component (30), the laser component (20) and the display module (40) respectively, and the main control board (60) receives the electrical signal corresponding to the infrared light signal sent by the infrared component (30) and/or the distance information sent by the laser component (20), and controls the display module (40) to display the corresponding infrared image and/or the distance information.
The multi-mode binocular handheld optical device according to claim 1 is characterized in that a filtering lens cover is provided on the outer side of the front end of the visible light path of each monocular imaging module (16) for filtering out the visible light signal and allowing the laser signal to pass through.
The multi-mode binocular handheld optical device according to claim 1, wherein the operating mode of the multi-mode binocular handheld optical device comprises one of the following:

A white light mode in which only the binocular white light component (10) works to form a white light image, an infrared mode in which only the infrared component (30) works to form an infrared image, and both the white light mode and the infrared mode are turned on. The dual-light fusion mode, the white light ranging mode with both the white light mode and the laser ranging mode turned on, the infrared ranging mode with both the infrared mode and the laser ranging mode turned on, and the dual-light fusion ranging mode with both the white light mode, the infrared mode and the laser ranging mode turned on.
The multi-mode binocular handheld optical device according to any one of claims 1 to 13, characterized in that the multi-mode binocular handheld optical device is a binocular handheld telescope.