CN221904367U - Light feeding device - Google Patents

Abstract

The utility model belongs to the field of optical display, and particularly relates to a light feeding device, which comprises: a single light source disposed at a first location; a single light source emits light with a central wavelength of 580nm-750 nm; the imaging light path is connected with the single light source light path, light of the single light source is received and emitted out through the imaging light path to form emergent light, and an image of the single light source is formed in the imaging light path; the observation interface is arranged at the second position and is used for human eyes to observe, and the image distance of the single light source observed at the position of the observation interface is larger than 1 meter; the outgoing light forms a spot at the observation interface covering both eyes of the observer. The problem of different interpupillary distances of different users is not needed to be considered in the arrangement; in addition, through the extension of imaging light path propagation path, eyes watch and will be in the state of looking far, be favorable to preventing and controlling and relieving myopia, set up irradiance so as to enable to satisfy the stimulus volume that the viewer both eyes received to effectively prevent and control myopia.

Description

A light feeding device

Technical Field

The utility model belongs to the field of optical display, and in particular relates to a light feeding device.

Background Art

It has been found that the further development of myopia can be effectively prevented and controlled under the irradiation of light with sufficient light intensity and specific spectrum, so devices that can emit specific light, such as light-feeding devices, have been widely used in clinical practice. However, the common light-feeding devices on the market usually use lasers for stimulation. In addition, the light source needs to be within 30cm of the left and right eyes, and the left and right eyes need to be illuminated separately, that is, two light sources corresponding to the left and right eyes need to be set up to form a binocular illumination structure.

Since the light source is relatively close to the eyes, both eyes are usually in a close-up state when using the light-feeding device, which is not conducive to the prevention and control of myopia. In addition, when using both eyes, the left and right eyes need to look at two light sources respectively. For young children, it is difficult to adjust the pupil distance, which may cause uneven illumination of both eyes. The binocular illumination structure is not easy to adjust parameters such as the size and subtending angle of the light source. In addition, the use of laser as the light source may have certain safety hazards, and it is also difficult to monitor the user's gaze and obtain compliance data.

Utility Model Content

The present invention is proposed based on the above-mentioned requirements of the prior art, and the technical problem to be solved by the present invention is to provide a light feeding device to improve the performance.

In order to solve the above problems, the technical solution provided by the utility model includes:

A light-feeding device is provided, comprising: a single light source, arranged at a first position; the single light source emits light with a central wavelength of 590nm-760nm, and the single light source forms a uniform light spot with a first size; an imaging light path, the imaging light path is connected to the single light source light path, the light received from the single light source is emitted via the imaging light path to form outgoing light, and an image of the single light source is formed in the imaging light path; an observation interface, the observation interface is arranged at a second position for human eye observation, the image distance of the single light source observed at the observation interface position is greater than 1 meter; the outgoing light forms a light spot with a second size at the observation interface that covers both eyes of the observer.

Through the above-mentioned arrangement, the light-feeding device forms only one image for the viewer's two eyes to watch together, and there is no need to consider the problem of different pupil distances of different users; in addition, the propagation path is extended by the imaging light path, so that the final image is more than 1m away from the observation interface, so that a long-distance image can be presented in a limited space, and when the formed image has a certain distance, binocular viewing will be in a telephoto state, which is conducive to preventing and alleviating myopia. The irradiance is set to be able to meet the amount of stimulation received by the viewer's two eyes, thereby effectively preventing and controlling myopia.

Preferably, the imaging optical path includes a beam splitter, which is arranged opposite to the single light source; a concave reflector, which is arranged opposite to the beam splitter and has a concave surface; after the light from the single light source is incident on the beam splitter, a portion of the light is incident on the concave reflector and is reflected to form an upright and enlarged virtual image formed by the single light source.

By using reflection through a beam splitter and a concave reflector to increase the propagation path of light, the imaging distance is extended, which is beneficial for preventing and controlling myopia.

Preferably, the single light source includes a light-emitting body formed by an arrangement of LED lights, and the light-emitting body is located at a first position and arranged opposite to the imaging light path.

LED lamps are arranged to form a light-emitting body so that each lamp bead can be controlled individually. At the same time, when one or several lamp beads fail, it is convenient to replace them without replacing the entire light-emitting body. Only the faulty lamps need to be replaced and eliminated.

Preferably, the single light source comprises an electronic screen, and the electronic screen is arranged at a first position opposite to the imaging light path.

Using the electronic screen as a single light source makes it easy to control the amount of stimulation entering the human eye by controlling the image presented on the electronic screen. It is convenient to control and can adjust the presented image, which can attract viewers to a certain extent and increase viewing time, especially for young children.

Preferably, a shading plate is arranged around the single light source.

Such an arrangement can prevent viewers, especially young children, from watching at other than the designated angle and designated position out of curiosity, or even directly watching a single light source. When they watch a single light source, since the single light source is close to the observation interface, both eyes are in a state of close-range eye use when watching the single light source, and myopia prevention and control is not utilized. The visor is used to block the single light source so that the viewer cannot directly watch the single light source, thereby avoiding the above situation.

Preferably, a soft light plate is arranged between the single light source and the imaging light path and close to the single light source.

With this arrangement, the light emitted by a single light source is formed into diffused transmitted light after passing through the soft light plate, so as to emit light evenly.

Preferably, a filter with a spatial contrast pattern is arranged in front of the single light source.

Through the above-mentioned settings for treatment guidance, looking into the distance while watching can also enhance the interest of watching, improve the spontaneity of watching of the viewer, and prolong the watching time to a certain extent, which is conducive to the prevention and control of myopia.

Preferably, the light-feeding device further comprises a camera, which can obtain the movement of the eyeballs. The light-feeding device can analyze the data obtained by the camera, monitor the gaze of both eyes, and obtain compliance data.

The compliance data were obtained through the above settings.

Preferably, the light feeding device further comprises a cylinder, one end of which is an observation interface, and the other end of which is connected to the imaging light path.

Through the above settings, the distance between human eyes and the light spot can be fixed, so that a better prevention and control effect can be achieved.

Preferably, the single light source emits light with a central wavelength of 650 nm.

The above arrangement can satisfy the amount of stimulation received by both eyes of the viewer, thereby effectively preventing and controlling myopia.

Preferably, the single light source presents images including: a main image, which is a circle with a diameter of 1mm to 50mm or a square with a side length of 1mm to 50mm, emitting light with a wavelength of 590 to 760nm; and a peripheral image, which is located around the main image and emits light with a wavelength of 380 to 450nm.

The above-mentioned setting forms peripheral defocus, which can effectively prevent and control myopia and even alleviate the degree of myopia.

Compared with the prior art, the utility model images a single light source at a distance of 1m through an imaging optical path, can present a distant image in a limited space, and can effectively avoid the eyes being in a near-sighted state when directly viewing a single light source at close range, thereby affecting the effect of alleviating or preventing myopia; in addition, only one light source is provided for the viewer's two eyes to share, without the need to adjust the pupil distance, thereby avoiding the influence of errors in pupil distance adjustment on the eyes; further, using a controllable LED lamp or electronic screen as a single light source can attract viewers to watch for a long time by changing the presented pattern and wavelength, thereby achieving a better effect of alleviating or preventing myopia.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

FIG1 is a schematic diagram of light path propagation in one embodiment of the utility model;

FIG2 is a schematic diagram of a light feeding device in an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a light spot viewed by a viewer according to the present invention.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection can be a mechanical connection, or an electrical connection can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

To facilitate understanding of the embodiments of the present application, further explanation will be given below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present application.

This embodiment provides a light-feeding device, as shown in FIGS. 1 to 3 .

The light-feeding device includes a single light source 1 , an imaging light path and an observation interface 6 .

The light-feeding device has two barrels for the viewer's eyes to watch, and the light-feeding device includes a single light source 1, an imaging light path, and an observation interface 6. One end of the barrel is the observation interface 6, and the other end of the barrel is connected to the imaging light path. Through the above arrangement, the distance between the human eyes and the light-feeding pattern can be fixed, so that a better prevention and control effect can be achieved.

The image formed by the single light source 1 through the imaging optical path will be viewed by both eyes, without the need to adjust for different pupil distances of different users, and can alleviate or prevent myopia through the light waves it emits. The single light source 1 emits light with a central wavelength of 590nm-760nm. The single light source forms a uniform light spot of a first size, which is a circle with a diameter of 1mm to 50mm or a square with a side length of 1mm to 50mm. Further, the image displayed by the single light source includes a main image, which is a circle with a diameter of 1mm to 50mm or a square with a side length of 1mm to 50mm, and emits light with a wavelength of 590nm to 760nm; in addition, the image displayed by the single light source includes a peripheral image, and the wavelength of the peripheral image is 380 to 450nm. Further, the light source in the central area of the main image can be set as a laser diode, emitting light with a wavelength of 630 to 670nm.

In one implementation of the present embodiment, the single light source 1 includes an LED lamp light source, and the main image is formed by splicing multiple LED lamps with a side length of 0.3mm to 2mm to form a circular light-emitting surface with a diameter of 1mm to 50mm or a square light-emitting surface with a side length of 1mm to 50mm and uniform light emission, which sends light to the imaging optical path; the peripheral image is set with a purple LED lamp, and the wavelength of the purple LED lamp is 380nm to 450nm.

In another implementation of this embodiment, the single light source 1 includes a light-emitting body, and the light-emitting body is movably arranged in the light-emitting device. When it is needed, it can be moved to a preset position and emit light.

In yet another implementation of this embodiment, the single light source 1 comprises an electronic screen, which presents light of a preset wavelength that can provide stimulation to the user.

Preferably, the single light source 1 emits red light with a wavelength of 650 nm.

Furthermore, a shading plate is arranged around the single light source 1, so as to prevent the viewer from viewing from angles other than the specified viewing angle after the imaging light path is formed, and even directly viewing the single light source 1 through the observation interface 6. In this case, the single light source 1 is close to the human eye, and both eyes are in a state of nearsightedness, which is not conducive to myopia prevention and control; after the shading plate is set, the viewer can only watch from the specified viewing angle, thereby ensuring the viewing effect.

An imaging optical path, wherein the imaging optical path is connected to the optical path of the single light source 1 , receives light from the single light source 1 and emits it through the imaging optical path to form outgoing light, and an image of the single light source 1 is formed in the imaging optical path.

The imaging light path is arranged opposite to the single light source 1. The imaging light path comprises a beam splitter 2 and a concave reflector 3.

The beam splitter 2 can reflect and transmit the received light. A part of the received light will change its propagation direction on the beam splitter 2 and return to the direction of the luminous substance, and a part of the light will be emitted through transmission. The transmission is the emission phenomenon of the incident light after passing through the object after refraction. The beam splitter 2 has a reflection value (R) and a transmission value (T). The reflection and transmission of the beam splitter 2 are usually characterized by the splitting ratio, that is, the value of R:T. In the utility model, the transmission of the beam splitter 2 is utilized to filter out a part of the light to change the brightness of the final image and avoid unnecessary stimulation to the eyes due to excessive brightness.

The concave reflector 3 works by utilizing the law of reflection to change the propagation direction of the light, and the concave reflector 3 has a reflective surface that is concave relative to the position of the beam splitter 2.

The first position is a position opposite to the imaging light path, so that the imaging light path can present an image corresponding to the single light source 1 .

The beam splitter 2 is arranged opposite to the single light source 1, and the concave reflector 3 is arranged opposite to the beam splitter 2. The light emitted by the single light source 1 is incident on the beam splitter 2, and the beam splitter 2 transmits a part of the light to the side of the beam splitter 2 away from the single light source 1, and reflects the other part of the light to the concave reflector 3 opposite to it. The light incident on the concave reflector 3 is reflected again to form an upright and enlarged image formed by the single light source 1.

In one implementation of this embodiment, a circular light source with a diameter of 10 mm and uniform light emission formed by an LED lamp forms a light spot 5 with a diameter of 100 mm and an illumination of 10000 lx after passing through an imaging light path.

In another implementation of this embodiment, the single light source 1 includes a light-emitting body, and the light-emitting body is movably arranged in the light-emitting device. When needed, it is moved to the first position to transmit the light into the imaging light path, and then form a corresponding image through the imaging light path.

In another implementation of the present embodiment, the single light source 1 includes an electronic screen, which presents light of a preset wavelength that can provide stimulation to the user. The light presented by the electronic screen is transmitted to the imaging optical path, and an imaging picture corresponding to the electronic screen is formed through the imaging optical path.

Furthermore, a convex lens may be arranged in front of the single light source 1, for example, the convex lens is arranged in front of a Fresnel lens, so that light from some peripheral images converges before the central light to form peripheral defocus, thereby effectively preventing and controlling myopia and alleviating the degree of myopia.

Furthermore, a soft light plate 4 may be arranged in front of the single light source 1 to scramble the light emitted by the single light source 1 into diffused transmitted light, thereby forming a uniform luminous light source.

Furthermore, a filter with a certain spatial contrast pattern can be set in front of the single light source 1 for guidance, enabling telescopic viewing during viewing, enhancing the therapeutic effect, and at the same time increasing the viewer's viewing interest, thereby extending the viewing time to achieve a better viewing effect.

In addition, when the single light source 1 is an electronic screen, it can dynamically display patterns directly on the screen to attract viewers to watch for a long time. If a specific processed pattern or a pattern with a certain refractive power is displayed, it can also be used for telescopic viewing, thereby enhancing the therapeutic effect.

The light feeding device also includes a camera, which obtains eye movement and analyzes the obtained data to monitor the gaze of both eyes and obtain compliance data.

The observation interface 6 is arranged at the second position for human eye observation. The observation interface 6 is located at a position where the image distance of the observed single light source 1 is greater than 1 m. The emitted light forms a light spot 5 covering both eyes of the observer on the observation interface 6 .

Through the above arrangement, a single light source 1 forms a distant image through an imaging optical path, so as to effectively prevent the interference of a closer image on the treatment of alleviating or preventing myopia.

With respect to the above imaging optical path, the observation interface 6 is the interface close to the outside of the beam splitter 2, that is, the observer can observe the light spot 5 formed in the interior through the observation interface 6. Since a shading plate is arranged around the single light source 1, the observer can only see the image formed by the single light source 1 within a 45 degree angle from the front.

Furthermore, the irradiance of the light spot 5 is greater than 300 lx, so as to provide appropriate stimulation to the eyes, thereby alleviating or preventing the degree of myopia.

The utility model images a single light source 1 at a distance of 1 m through an imaging optical path, and can present a long-distance image in a limited space, which can effectively avoid the eyes being in a near-viewing state when directly viewing the single light source 1 at close range, thereby affecting the effect of alleviating or preventing myopia; in addition, only one light source is provided for the viewer's two eyes to share, and there is no need to adjust the pupil distance, thereby avoiding the influence of errors in pupil distance adjustment on the eyes; further, using a controllable LED lamp or electronic screen as the single light source 1 can attract viewers to watch for a long time by changing the presented pattern and wavelength, thereby achieving a better effect of alleviating or preventing myopia.

The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims (11)

1. A light feeding device, comprising:

A single light source disposed at a first location; the single light source emits light with a central wavelength of 590nm-760nm, and the single light source forms a uniform light spot with a first size;

The imaging optical path is connected with the single light source optical path, light received by the single light source is emitted out through the imaging optical path to form emergent light, and an image of the single light source is formed in the imaging optical path;

The observation interface is arranged at a second position and used for being observed by human eyes, and the image distance of the single light source observed at the position of the observation interface is larger than 1 meter; the outgoing light forms a spot of a second size at the viewing interface covering both eyes of the observer.

2. The light feeding device as defined in claim 1, wherein,

The imaging light path comprises a spectroscope, and the spectroscope is arranged opposite to the single light source;

The concave reflector is arranged opposite to the spectroscope and provided with an inward concave surface;

after the light rays of the single light source are incident to the spectroscope, part of the light rays are incident to the concave reflecting mirror and reflected, so that an upright amplified virtual image formed by the single light source is formed.

3. The light feeding device as defined in claim 1, wherein,

The single light source comprises a luminous body formed by arranging LED lamps, and the luminous body is arranged at a first position and opposite to the imaging light path.

4. The light feeding device of claim 1, wherein said single light source comprises an electronic screen disposed opposite said imaging light path in a first position.

5. The light feeding device of claim 1, wherein a light shield is provided around said single light source.

6. The light feeding device of claim 1, wherein a soft light plate is disposed between the single light source and the imaging light path proximate the single light source.

7. The light feeding device of claim 1, wherein a filter with a spatial contrast pattern is provided in front of said single light source.

8. The light feeding device of claim 1, wherein said single light source is preceded by a convex lens to cause peripheral defocus in a peripheral image in a single light source display image.

9. The light feeding device of claim 1, further comprising a barrel having one end being an observation interface and the other end being in communication with the imaging light path.

10. The light feeding device of claim 1, wherein said single light source emits light at a center wavelength of 650 nm.

11. The light feeding device of claim 1, wherein said single light source presenting an image comprises: the main image is in a round shape with the diameter of 1-50 mm or a square shape with the side length of 1-50 mm, and emits light with the wavelength of 590-760 nm; and a peripheral image positioned around the main image and emitting light with a wavelength of 380-450 nm.