CN106950792A - A reflective optical imaging system - Google Patents

Abstract

The present invention discloses a reflective optical imaging system, which is provided with optical elements, a reflective system, an imaging lens and an imaging surface in sequence from the object surface to the image surface; the reflective system includes a reflective surface, and the reflective system can set any rotation axis in any X, Y, Z coordinate space area above the imaging lens and in any direction and any position including the X, Y, Z coordinate axes according to the required field of view, and rotate around the rotation axis at a certain angle, or make it form a certain angle A with the rotation axis, so that light rays at various angles outside the field of view of the imaging lens are incident on the reflective surface of the reflective system to undergo total reflection and then are incident on the imaging lens, that is, the object outside the field of view of the lens is imaged on the imaging surface. The present invention can realize high-definition imaging of objects outside the field of view of the lens by rotating the reflective system, is easy to design and process, is convenient to operate, is feasible, and solves certain economic costs.

Description

A reflective optical imaging system

【Technical field】

The invention relates to a reflective optical imaging system, in particular to an imaging design concept of an optical system with a large field of view or even full angle and a reflective mirror system.

【Background technique】

As large-angle imaging lenses are widely used in monitoring, security, vehicle, projection, special environment detection, monitoring, and biomedical testing, the application of ultra-wide-angle optical imaging systems will also be a development trend. But as far as the current technology and engineering process is concerned, it is still relatively difficult to achieve ultra-wide-angle imaging. On the one hand, in terms of design, a simple ultra-wide-angle imaging lens will produce large distortion, because when the viewing angle is greater than 120°, the distortion will appear The rapid growth has seriously distorted the imaged image, and it is difficult to correct aberrations, and the large wide-angle imaging lens is prone to light errors in software design; on the other hand, the processing cost problem makes the mass production of large wide-angle lenses difficult. And this reflective optical imaging system, by rotating the mirror, can optically image objects that cannot be observed by the small-angle lens, and realize the shooting of scenes within a large field of view. high-definition imaging.

The present invention studies and proposes aiming at the deficiencies in the prior art.

【Content of invention】

The technical problem to be solved by the present invention is to provide a reflective optical imaging system, which uses an optical element, a reflective system and an imaging lens system to realize object imaging within a large field of view.

To achieve the above object, the present invention adopts the following technical solutions:

A reflective optical imaging system is characterized in that an optical element, a reflective system, an imaging lens and an imaging surface are sequentially arranged from an object plane to an image plane; wherein the reflective system includes a reflective surface.

A reflective optical imaging system as described above, characterized in that the reflective system can be in any X, Y, Z coordinate space area above the imaging lens and includes the X, Y, Z coordinate axes according to the required field of view Set any rotation axis in any direction and any position, rotate around the rotation axis by a certain angle, or make it form a certain angle A with the rotation axis, so that the light rays at various angles outside the field of view of the imaging lens are incident on the reflection The reflective surface of the system undergoes total reflection and then enters the imaging lens, that is, objects outside the field of view of the lens are imaged on the imaging surface.

A reflective optical imaging system as described above is characterized in that the X, Y, and Z directions are three mutually perpendicular directions, wherein the Y direction is parallel to the direction of the optical axis of the imaging lens, and the X, Z directions are perpendicular to the imaging lens The direction of the optical axis.

A reflective optical imaging system as described above is characterized in that the reflective system can translate above the imaging lens, that is, it can move away when imaging an object within the field of view of the imaging lens.

A reflective optical imaging system as described above is characterized in that the light propagation path of the imaging system is as follows: the light is incident on the reflective surface of the reflective system through the optical element, reflected by the reflective surface, and then transmitted to the imaging lens. Imaging on the imaging surface.

A reflective optical imaging system as described above is characterized in that the reflective surface of the reflective system includes a reflective layer.

A reflective optical imaging system as described above is characterized in that it can realize optical imaging with a large field of view or even full angle.

The invention has the advantages of: the high-definition imaging of objects outside the field of view of the lens can be realized through the rotating reflection system, the design and processing are convenient, the operation is convenient and feasible, and a certain economic cost is solved.

【Description of drawings】

Figure 1 is a schematic diagram of the present invention.

【detailed description】

The present invention will be described in further detail below in conjunction with the accompanying drawings. As shown in FIG. 1 , the present invention is a reflective optical imaging system, which is actually a system capable of high-definition imaging of objects outside the field of view of the optical imaging lens.

The reflective optical imaging system of the present invention is sequentially provided with a first optical element 1 , a reflective system 2 , an imaging lens 3 and an imaging surface 4 from the object plane to the image plane. As shown in Figure 1, in this embodiment, the optical element 1 can be used not only to protect the optical system, but also to correct the aberration of the overall system, wherein the reflective system 2 can perform imaging according to the required field of view. Set any rotation axis in any direction and any position in any X, Y, Z coordinate space area above the lens 3 and including the X, Y, Z coordinate axes, and then rotate around the axis by a certain angle, or make it with The axis forms a certain angle A, so that light rays from various angles outside the field of view of the lens are incident on the reflection surface of the reflection system 2 for total reflection and then incident into the imaging lens 3, so that objects outside the field of view of the lens can be imaged into Image surface 4.

In the present invention, X, Y, and Z directions are three mutually perpendicular directions, wherein, the Y direction is parallel to the direction of the optical axis of the imaging lens 3, and the X, Z directions are perpendicular to the direction of the optical axis of the imaging lens 3.

In the present invention, the reflective system 2 can translate above the imaging lens 3 , that is, it can be moved away when imaging an object within the field of view of the imaging lens 3 .

The light propagation path of the imaging system in the present invention is as follows: the light is incident on the reflection surface of the reflection system 2 through the optical element 1, reflected by the reflection surface of the reflection system 2, and transmitted to the imaging lens 3, and finally forms an image on the imaging surface 4.

The reflective surface 21 of the reflective system 2 in the present invention comprises a reflective layer.

The reflective optical imaging system of the present invention can realize a wide field of view and even full-angle optical imaging.

Claims (7)

1. one kind reflection optical imaging system, it is characterised in that optical element (1), reflection system are disposed with from object plane to image planes System (2), imaging lens (3) and imaging surface (4)；Wherein described reflecting system (2) includes reflecting surface (21).

2. a kind of according to claim 1 reflect optical imaging system, it is characterised in that the reflecting system (2) can basis Required field range above the imaging lens (3) any X, Y, in Z coordinate area of space and comprising X, Y, Z coordinate axle including Any direction and optional position set any one rotary shaft, rotated a certain angle around the rotary shaft, or make itself and this Rotary shaft has a certain degree (A), so as to realize that the light of the outer all angles of imaging lens (3) field range incides reflection system System (2) reflecting surface occur total reflection be then incident in imaging lens (3), i.e., by the object outside camera lens (3) field range into As on imaging surface (4).

3. a kind of according to claim 1 reflect optical imaging system, it is characterised in that the X, Y, Z-direction are three mutual Vertical direction, wherein, Y-direction is parallel to the direction of imaging lens (3) optical axis, and X, Z-direction are perpendicular to imaging lens (3) optical axis Direction.

4. a kind of according to claim 1 reflect optical imaging system, it is characterised in that the reflecting system (2) is in imaging lens It can translate, i.e., can be removed when the object in imaging lens (3) field range is imaged above head (3).

5. a kind of according to claim 1 reflect optical imaging system, it is characterised in that the light of the imaging system is propagated Path is：Light incides the reflecting surface (21) of reflecting system (2), reflected face (21) reflection, by light through optical element (1) Travel in imaging lens (3), be finally imaged on imaging surface (4).

6. a kind of according to claim 1 reflect optical imaging system, it is characterised in that the reflecting surface of the reflecting system (2) (21) reflecting layer is included.

7. a kind of according to claim 1 reflect optical imaging system, it is characterised in that big field range can be achieved even complete Angular optical is imaged.