Optical detection system for lens deformation

Abstract

The utility model discloses an optical detection system for lens deformation, which belongs to the field of optical detection and comprises a point light source, and a first detected lens is arranged on one side of the point light source. A second convex-concave lens is arranged on the other side of the first detected lens, a third convex-concave lens is arranged on one side of the surface of the second convex-concave lens, a third plano-convex lens is arranged on the other side of the surface of the third convex-concave lens, and a first beam splitter prism is arranged on one side of the surface of the third plano-convex lens. When the lens deformation optical detection system is used, light rays are emitted by the point light source, are focused by the detected lens and the plurality of lenses and then are divided into two paths by the beam splitter prism, images are respectively captured by the two optical cameras, and the lens deformation condition can be analyzed by comparing the difference of the images of the two cameras. The lens combination is used for accurately focusing light, the detection accuracy is improved through double-camera shooting, the lens deformation degree and direction can be effectively analyzed, and a reliable basis is provided for lens quality detection.

Description

Technical Field

[0001] The utility model relates to the field of optical detection, and more specifically, to a lens deformation optical detection system. Background Art

[0002] Optical lenses are one of the most commonly used components in optical systems, and their quality directly determines the quality of the optical imaging system. The deformation of the optical lens directly leads to the aberration of the optical system, especially in extreme environments such as high temperature and high pressure, where the deformation of the lens is magnified.

[0003] During underwater imaging, the huge pressure of the water causes the lens to deform significantly due to the huge pressure difference on both sides, and may even cause cracks, resulting in seal failure and damage to electronic equipment inside the lens.

[0004] In order to better control the deformation of the lens and reduce unnecessary engineering costs, an optical system that can be used to detect optical lenses was invented;

[0005] Therefore, to address the above problems, an optical detection system for lens deformation is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lens deformation optical detection system to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lens deformation optical detection system, comprising a point light source, a first inspected lens being arranged on one side of the point light source; a second convex-convex lens being arranged on the other side of the first inspected lens, a third convex-concave lens being arranged on one side of the surface of the second convex-convex lens, a third plano-convex lens being arranged on the other side of the surface of the third convex-concave lens, a first beam-splitting prism being arranged on one side of the surface of the third plano-convex lens, a second beam-combining prism being arranged on one side of the surface of the first beam-splitting prism, a second optical camera being arranged on one side of the surface of the second beam-combining prism, and a reflector being arranged at the bottom of the second beam-combining prism.

[0008] As a further solution of the present invention, a first optical camera is provided at the bottom of the first beam splitter prism.

[0009] As a further solution of the present invention, the point light source is located at the leftmost end of the overall optical system. The emitted light passes through the first inspected lens and is focused by the second convex-convex lens, then passes through the third convex-concave lens and the third plano-convex lens and then converges into the first beam splitter prism.

[0010] As a further solution of the present invention, the first beam splitter prism divides the incoming light into the first optical camera for imaging, and the transmitted light enters the second beam combining prism.

[0011] As a further solution of the present invention, one end of the second beam-combining prism is a reflecting mirror, and the other end is a second optical camera.

[0012] As a further solution of the present invention, the point light source guides light to the reflector through a laser optical fiber.

[0013] As a further solution of the present invention, the second beam combining prism combines the light from the first beam splitting prism and the light from the reflector.

[0014] The technical effects and advantages of this utility model are:

[0015] Compared with the existing technology, when this lens deformation optical detection system is in use, the lens deformation optical detection system emits light through a point light source. After being focused by the lens to be inspected and multiple lenses, the light is divided into two paths by a beam splitter prism, and images are captured by two optical cameras respectively. By comparing the differences in the images of the two cameras, the lens deformation can be analyzed. Its advantages are that the system has a compact structure, uses a lens combination to accurately focus light, and dual-camera shooting to improve detection accuracy. It can effectively analyze the degree and direction of lens deformation, providing a reliable basis for lens quality detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the main components of the utility model.

[0017] Figure 2 It is a structural diagram of the overall optical path of the utility model.

[0018] The figures are marked as follows: 1, point light source; 2, first inspected lens; 3, second convex-convex lens; 4, third convex-concave lens; 5, third plano-convex lens; 6, first beam-splitting prism; 7, first optical camera; 8, second beam-combining prism; 9, reflector; 10, second optical camera. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] As attached Figure 1-2A lens deformation optical detection system shown in FIG. 1 includes a point light source 1, a first inspected lens 2 being provided on one side of the point light source 1; a second convex-convex lens 3 being provided on the other side of the first inspected lens 2; a third convex-concave lens 4 being provided on one side of the surface of the second convex-convex lens 3; a third plano-convex lens 5 being provided on the other side of the surface of the third convex-concave lens 4; a first beam-splitting prism 6 being provided on one side of the surface of the third plano-convex lens 5; a second beam-combining prism 8 being provided on one side of the surface of the first beam-splitting prism 6; a second optical camera 10 being provided on one side of the surface of the second beam-combining prism 8; a reflector 9 being provided at the bottom of the second beam-combining prism 8; and a first optical camera 7 being provided at the bottom of the first beam-splitting prism 6.

[0022] The specific optical system for detecting lens deformation is composed of: 1. a point light source; 2. a first lens to be inspected; 3. a second convex-convex lens; 4. a third convex-concave lens; 5. a third plano-convex lens; 6. a first beam splitter prism; 7. a first optical camera; 8. a second beam combining prism; 9. a reflector; and 10. a second optical camera.

[0023] A specific point light source is located at the left end of the overall optical system and emits light toward the first inspected lens.

[0024] Specifically, the distance H between the first inspected lens 2 and the second convex-convex lens 3 is less than one twelfth of the Φ of the first inspected lens 2.

[0025] Specifically, the diameter of the 3 second convex-convex lens is equal to the diameter of the 2 first inspected lens in order to better focus the light passing through the 2 first inspected lens.

[0026] Specifically, the third convex-concave lens 4 and the third plano-convex lens 5 further focus the light so that the light converges on the first beam splitter prism 6.

[0027] Specifically, the first beam splitter prism 6 is used to split the converged light to the first optical camera 7 and the second beam combining prism 8.

[0028] Specifically, the second beam combining prism 8 combines the light reflected by the first beam splitting prism 6 and the reflector 9, and transmits the combined light to the second optical camera 10.

[0029] The working process of this utility model is as follows:

[0030] When this lens deformation optical detection system is in use, the point light source 1 is located at the left end of the overall optical system, and it emits light to the first inspected lens 2. After these light rays pass through the first inspected lens 2, they will undergo a certain degree of deformation or refraction. The specific degree of deformation depends on the properties of the lens itself. Then, the second convex-convex lens 3 is placed at a certain distance from the first inspected lens 2 (the distance is less than one twelfth of the diameter of the first inspected lens), and its diameter is equal to the diameter of the first inspected lens 2. The purpose of this is to better focus the light passing through the first inspected lens 2, so that the light can be more concentrated and clear after passing through the second convex-convex lens 3. Then, the third convex-concave lens 4 and the third plano-convex lens 5 further focus the light so that the light converges on the first beam splitter prism 6. The combination of these two lenses can The direction and focus of the light are further adjusted to ensure that the light can be accurately received by the beam splitter prism. The function of the first beam splitter prism 6 is to split the converged light into two paths: one path is directly transmitted to the first optical camera 7 for shooting; the other path is reflected by the second beam combining prism 8 and the reflector 9, and then transmitted to the second optical camera 10 for shooting. In this way, the two cameras can simultaneously capture the images formed by the light passing through different paths. Finally, by comparing the images captured by the two cameras, the deformation of the first object 2 can be analyzed. Because light will be deformed when passing through the lens, the images captured by the two cameras will also be different. By analyzing and calculating these differences, information such as the degree and direction of lens deformation can be obtained. This is the working process and working principle of the device.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0032] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lens deformation optical detection system, comprising a point light source (1), characterized in that: A first inspected lens (2) is provided on one side of the point light source (1); A second convex-convex lens (3) is provided on the other side of the first inspected lens (2), a third convex-concave lens (4) is provided on one side of the surface of the second convex-convex lens (3), a third plano-convex lens (5) is provided on the other side of the surface of the third convex-concave lens (4), a first beam splitter prism (6) is provided on one side of the surface of the third plano-convex lens (5), a second beam combining prism (8) is provided on one side of the surface of the first beam splitter prism (6), a second optical camera (10) is provided on one side of the surface of the second beam combining prism (8), and a reflecting mirror (9) is provided at the bottom of the second beam combining prism (8).

2. The lens deformation optical detection system according to claim 1, characterized in that: A first optical camera (7) is provided at the bottom of the first beam splitter prism (6).

3. The lens deformation optical detection system according to claim 1, characterized in that: The point light source (1) is located at the leftmost end of the overall optical system. The emitted light passes through the first inspected lens (2), is focused by the second convex-convex lens (3), and then passes through the third convex-concave lens (4), and the third plano-convex lens (5) before being converged into the first beam splitting prism (6).

4. The lens deformation optical detection system according to claim 1, characterized in that: The first beam splitter prism (6) divides the incoming light into a first optical camera (7) for imaging, and the transmitted light enters the second beam combining prism (8).

5. The lens deformation optical detection system according to claim 1, characterized in that: One end of the second beam combining prism (8) is a reflecting mirror (9), and the other end is a second optical camera (10).

6. The lens deformation optical detection system according to claim 1, characterized in that: The point light source (1) guides light to the reflector (9) via a laser optical fiber.

7. The lens deformation optical detection system according to claim 1, characterized in that: The second beam combining prism (8) combines the light from the first beam splitting prism (6) and the light from the reflector (9).

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