Camera parallel eccentricity detection device

Abstract

The utility model discloses a camera parallel eccentricity detection device, which comprises a standard camera and an interface piece, and the interface piece is used for being connected with a camera interface of a camera to be detected. The device further comprises a coaxiality detection mechanism, a parallelism detection mechanism and a reflector, the interface piece and the standard camera are coaxially and oppositely arranged, a first light passing channel is arranged between the interface piece and the standard camera, the reflector is obliquely arranged in the first light passing channel, and a through hole is formed in the reflector. The coaxiality detection mechanism is connected with the first light passing channel, and light which is emitted by the coaxiality detection mechanism and is in a first detection pattern enters the first light passing channel and is imaged on a photosensitive sheet of the to-be-detected camera after being reflected by a reflector; the parallelism detection mechanism is connected with the first light passing channel, and light which is emitted by the parallelism detection mechanism and is in a second detection pattern passes through the through hole to reach the to-be-detected camera, is reflected by a photosensitive sheet of the to-be-detected camera, passes through the through hole and then is imaged on the standard camera. According to the utility model, the parallelism and coaxiality detection can be completed by clamping the camera once, the use is convenient, the production efficiency can be improved, and personal errors are reduced.

Description

Technical Field

[0001] The utility model relates to the field of camera detection, in particular to a camera parallel eccentricity detection device. Background Art

[0002] In the production process of imaging devices such as cameras, it is necessary to accurately detect the parallelism between the plane of the photosensitive film (i.e., the photosensitive device) of the camera and the plane of the camera interface (i.e., the parallelism of the photosensitive film), and at the same time, it is also necessary to accurately detect the concentricity between the center of the photosensitive film of the camera and the center of the camera interface (i.e., the concentricity of the photosensitive film, which is also the coaxiality of the photosensitive film). The parallelism and coaxiality of the camera photosensitive film are crucial for the imaging quality and effect of the camera. However, the existing parallelism detection system and coaxiality detection system often operate independently and separately, and the camera needs to be re-clamped, resulting in problems such as low production efficiency, complex operation, and large human errors, and cannot meet the increasingly high production efficiency and product quality. Summary of the Utility Model

[0003] The utility model aims at the technical problems existing in the prior art, and provides a camera parallel eccentricity detection device, which can complete the parallelism and coaxiality detection with one clamping of the camera, is convenient to use, can improve the production efficiency, and reduce human errors.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a camera parallel eccentricity detection device, including a standard camera and an interface member, the interface member is used to connect the camera interface of the camera to be tested; it also includes a coaxiality detection mechanism, a parallelism detection mechanism and a reflector, the interface member and the standard camera are coaxial and arranged opposite to each other, and a first light passing channel is arranged between the two, the reflector is obliquely arranged in the first light passing channel, and a through hole is arranged on the reflector; the coaxiality detection mechanism is connected to the first light passing channel, and the light in the form of a first detection pattern emitted by it enters the first light passing channel, and is imaged on the photosensitive film of the camera to be tested after being reflected by the reflector; the parallelism detection mechanism is connected to the first light passing channel, and the light in the form of a second detection pattern emitted by it passes through the through hole to reach the camera to be tested, and is imaged on the standard camera after being reflected by the photosensitive film of the camera to be tested and passing through the through hole.

[0005] Further, the coaxiality detection mechanism includes a second light passing channel, a first light source assembly and a first standard plane, the second light passing channel is located beside the first light passing channel, and one end of the second light passing channel communicates with the first light passing channel and corresponds to the reflector; the first light source assembly is arranged at the other end of the second light passing channel, and the light emitted by it shoots towards the reflector along the second light passing channel; the first standard plane is arranged in the second light passing channel and between the reflector and the first light source assembly, and a first detection pattern is arranged on the first standard plane.

[0006] Furthermore, the coaxiality detection mechanism also includes a first optical lens and a second optical lens arranged in the second light passage, the first optical lens is located between the first standard plane and the reflector, and the second optical lens is located between the first standard plane and the first light source assembly; the first optical lens and the second optical lens are convex lenses respectively.

[0007] Furthermore, the angle between the reflective surface of the reflector and the axis of the first light passage is 45 degrees, the axis of the second light passage is perpendicular to the axis of the first light passage; and the first standard plane is perpendicular to the axis of the second light passage.

[0008] Furthermore, the parallelism detection mechanism includes a third light passage, an optical prism, a second standard plane and a second light source assembly. The third light passage is located beside the first light passage and on the side of the reflector away from the interface component, and one end of the third light passage is connected to the first light passage. The second light source assembly is arranged at the other end of the third light passage, and the light emitted by it enters the first light passage along the third light passage. The optical prism is arranged at a position in the first light passage corresponding to one end of the third light passage, the second standard plane is arranged in the third light passage and between the optical prism and the second light source assembly, and a second detection pattern is provided on the second standard plane.

[0009] Furthermore, the parallelism detection mechanism also includes a third optical lens arranged in the third light passage and a fourth optical lens arranged in the first light passage, the third optical lens is located between the second standard plane and the second light source assembly, and the fourth optical lens is located between the optical prism and the reflector; the third optical lens and the fourth optical lens are convex lenses respectively.

[0010] Furthermore, the axis of the third light passage is perpendicular to the axis of the first light passage, and the second standard plane is perpendicular to the axis of the third light passage.

[0011] Furthermore, the axis of the through hole, the axis of the first light passage and the axis of the interface component coincide with each other.

[0012] Furthermore, the reflector is installed in the first light passage through a connecting piece, and the connecting piece is provided with a clearance opening corresponding to the through hole, and the shape and size of the clearance opening match the shape and size of the through hole.

[0013] Furthermore, the reflector is a total reflector.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The present utility model further includes a coaxiality detection mechanism, a parallelism detection mechanism, and a reflecting mirror. The interface member and the standard camera are coaxial and oppositely arranged, and a first light passing channel is provided therebetween. The reflecting mirror is inclined and arranged in the first light passing channel, and a through hole is provided on the reflecting mirror, so that the light in the form of a first detection pattern emitted by the coaxiality detection mechanism can be reflected by the reflecting mirror and imaged on the photosensitive film of the camera to be measured, and the light in the form of a second detection pattern emitted by the parallelism detection mechanism can pass through the through hole to reach the camera to be measured, and after being reflected by the photosensitive film of the camera to be measured and passing through the through hole, it is imaged on the standard camera, so that the parallelism and coaxiality detection can be completed by clamping the camera once, which is convenient to use, can improve production efficiency, and reduce human error.

[0016] 2. The first optical lens and the second optical lens are respectively convex lenses; the third optical lens and the fourth optical lens are respectively convex lenses, and the effect of condensing light is achieved through the convex lenses, enhancing the clarity of the images formed on the camera to be measured and the standard camera, so as to make the detection more accurate.

[0017] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments; however, a camera parallel eccentricity detection device of the present utility model is not limited to the embodiments. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a cross-sectional schematic of the present utility model Figure 1 ;

[0020] Figure 3 is a partial cross-sectional schematic of the present utility model Figure 1 (coaxiality detection process);

[0021] Figure 4 is a partial cross-sectional schematic of the present utility model Figure 2 (parallelism detection process);

[0022] Figure 5 is a three-dimensional structural schematic diagram of the cooperation between the reflecting mirror and the connecting member of the present utility model;

[0023] Figure 6 is the front view of the cooperation between the reflecting mirror and the connecting member of the present utility model;

[0024] In the figure: 1. Standard camera; 2. Interface component; 3. Camera to be tested; 31. Camera interface; 32. Photosensitive film; 4. Coaxiality detection mechanism; 41. Second light passing channel; 42. First light source assembly; 43. Second optical lens; 44. First standard plane; 45. First optical lens; 46. First housing; 5. Parallelism detection mechanism; 51. Third light passing channel; 52. Second light source assembly; 53. Third optical lens; 54. Second standard plane; 55. Optical prism; 56. Fourth optical lens; 57. Second housing; 6. Reflecting mirror; 61. Through hole; 7. Connecting cylinder; 8. Connecting piece; 81. Relief opening; 10. First light passing channel; 20. Test platform. Detailed implementation manners

[0025] In the present utility model, for terms such as "first", "second", "third", "fourth", etc., they are only used to distinguish similar objects, rather than to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. In the description, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In addition, in the description of the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "provided with", "equipped with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection, can be a mechanical connection, can be an electrical connection, can be directly connected, or can be indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figures 1-6As shown in the figure, a camera parallel eccentricity detection device of the present utility model includes a standard camera 1 and an interface member 2. The interface member 2 is used to connect to the camera interface 31 of the camera 3 to be measured. It further includes a coaxiality detection mechanism 4, a parallelism detection mechanism 5, and a reflector 6. The interface member 2 and the standard camera 1 are coaxially and oppositely arranged, and a first light passing channel 10 is provided therebetween. The reflector 6 is obliquely arranged in the first light passing channel 10, and a through hole 61 is provided on the reflector 6. The coaxiality detection mechanism 4 is connected to the first light passing channel 10, and the light in the form of a first detection pattern emitted by it enters the first light passing channel 10, and after being reflected by the reflector 6, it is imaged on the photosensitive film 32 of the camera 3 to be measured. The parallelism detection mechanism 5 is connected to the first light passing channel 10, and the light in the form of a second detection pattern emitted by it passes through the through hole 61 to reach the camera 3 to be measured, and after being reflected by the photosensitive film 32 of the camera 3 to be measured and passing through the through hole 61, it is imaged on the standard camera 1.

[0028] The coaxiality detection mechanism 4 includes a second light passing channel 41, a first light source assembly 42, and a first standard plane 44. The second light passing channel 41 is located beside the first light passing channel 10, and one end of the second light passing channel 41 communicates with the first light passing channel 10 and corresponds to the reflector 6. The first light source assembly 42 is arranged at the other end of the second light passing channel 41, and the light emitted by it is directed towards the reflector 6 along the second light passing channel 41. The first standard plane 44 is arranged in the second light passing channel 41 and is located between the reflector 6 and the first light source assembly 42, and a first detection pattern is provided on the first standard plane 44. Specifically, the first light source assembly 42 is an LED lamp assembly, and the first detection pattern is a standard crosshair, but it is not limited thereto. The coaxiality detection mechanism 4 further includes a first housing 46. The first housing 46 communicates with the interface member 2, and the second light passing channel 41 is arranged in the first housing 46.

[0029] The coaxiality detection mechanism 4 further includes a first optical lens 45 and a second optical lens 43 arranged in the second light passing channel 41. The first optical lens 45 is located between the first standard plane 44 and the reflector 6, and the second optical lens 43 is located between the first standard plane 44 and the first light source assembly 42. The first optical lens 45 and the second optical lens 43 are respectively convex lenses, and the effect of condensing light is achieved through the convex lenses to enhance the imaging clarity on the camera 3 to be measured.

[0030] The included angle between the reflecting surface of the reflector 6 and the axis of the first light passing channel 10 is 45 degrees. The axis of the second light passing channel 41 is perpendicular to the axis of the first light passing channel 10. The first standard plane 44 is perpendicular to the axis of the second light passing channel 41.

[0031] The parallelism detection mechanism 5 includes a third light passage 51, an optical prism 55, a second standard plane 54 and a second light source assembly 52. ​​The third light passage 51 is located beside the first light passage 10 and on the side of the reflector 6 away from the interface 2, and one end of the third light passage 51 is connected to the first light passage 10. The second light source assembly 52 is arranged at the other end of the third light passage 51, and the light emitted by it enters the first light passage 10 along the third light passage 51. The optical prism 55 is arranged at a position in the first light passage 10 corresponding to one end of the third light passage 51, the second standard plane 54 is arranged in the third light passage 51 and is located between the optical prism 55 and the second light source assembly 52, and a second detection pattern is arranged on the second standard plane 54. Specifically, the second light source assembly 52 is an LED lamp assembly, and the second detection pattern is a standard cross, but is not limited thereto. The standard camera 1 is connected to the interface member 2 via a connecting tube 7. The interface member 2 and the connecting tube 7 are connected, and the above-mentioned first light passage 10 is formed inside the two. The parallelism detection mechanism 5 also includes a second shell 57, which is connected to the connecting tube 7 and forms the above-mentioned third light passage 51 inside.

[0032] The parallelism detection mechanism 5 also includes a third optical lens 53 disposed in the third light passage 51 and a fourth optical lens 56 disposed in the first light passage 10, the third optical lens 53 is located between the second standard plane 54 and the second light source assembly 52, and the fourth optical lens 56 is located between the optical prism 55 and the reflector 6. The third optical lens 53 and the fourth optical lens 56 are convex lenses, respectively, which achieve a focusing effect and enhance the imaging clarity on the standard camera 1.

[0033] The axis of the third light passage 51 is perpendicular to the axis of the first light passage 10 , and the second standard plane 54 is perpendicular to the axis of the third light passage 51 .

[0034] Preferably, the axis of the through hole 61 , the axis of the first light passage 10 and the axis of the interface member 2 coincide with each other.

[0035] The reflector 6 is installed in the first light passage 10 through a connecting member 8. The connecting member 8 is provided with a clearance opening 81 corresponding to the through hole 61. The shape and size of the clearance opening 81 match those of the through hole 61. Specifically, the reflector 6 is a total reflector.

[0036] During installation, the interface component 2 is fixed on the test platform 20, and the camera interface 31 of the interface component 2 for installing the camera 3 to be tested is located above the test platform 20, the standard camera 1, the coaxiality detection mechanism 4 and the parallelism detection mechanism 5 are located below the test platform 20, the interface component 2 is arranged perpendicular to the test platform 20, and the first shell 46 and the second shell 57 are located on the same side of the interface component 2.

[0037] A camera parallel eccentricity detection device of the present utility model has the following working principle:

[0038] Coaxiality detection process: The light emitted by the first light source assembly 42 passes through the second optical lens 43 and the first standard plane 44 to emit light with a standard crosshair. Through the first optical lens 45 and the reflector 6, an optical system is formed, so that the standard crosshair of the first standard plane 44 is imaged on the photosensitive film 32 of the camera 3 to be measured through the optical system, forming a "crosshair image". The deviation of this image compared with the center of the photosensitive film 32 of the camera 3 to be measured is the coaxiality deviation of the photosensitive film 32 of the camera 3 to be measured; if the photosensitive film 32 of the camera 3 to be measured is coaxial with the center of the first standard plane 44, the "crosshair image" will coincide with the center of the photosensitive film 32 of the camera 3 to be measured; conversely, if the photosensitive film 32 of the camera 3 to be measured is not coaxial with the center of the first standard plane 44, the "crosshair image" will be separated from the center of the photosensitive film 32 of the camera 3 to be measured, and the degree of separation reflects the degree of non - coaxiality of the photosensitive film 32 of the camera 3 to be measured, and this part can be quantitatively marked.

[0039] Parallelism detection process: The light emitted by the second light source assembly 52 passes through the third optical lens 53 and the second standard plane 54 to emit light with a standard crosshair. Through the optical prism 55, the fourth optical lens 56, and the through - hole 61 on the reflector 6, and the photosensitive film 32 of the camera 3 to be measured, an optical system is formed, so that the standard crosshair of the second standard plane 54 forms parallel light through the optical system. After being reflected by the photosensitive film 32 of the camera 3 to be measured, it passes through the optical system again and is imaged on the photosensitive film of the standard camera 1, forming a "second crosshair image"; then the deviation of this image compared with the center of the standard camera 1 is the parallelism deviation of the photosensitive film 32 of the camera 3 to be measured; if the photosensitive film 32 of the camera 3 to be measured is parallel to the second standard plane 54, the "crosshair image" will coincide with the center of the standard camera 1; conversely, if the photosensitive film 32 of the camera 3 to be measured is not parallel to the second standard plane 54, the "crosshair image" will be separated from the center of the standard camera 1, and the degree of separation reflects the degree of non - parallelism of the photosensitive film 32 of the camera 3 to be measured, and this part can be quantitatively marked.

[0040] A camera parallel eccentricity detection device of the present utility model can simultaneously detect the parallelism and coaxiality of the photosensitive film 32 of the camera 3 to be measured, so that the two detections can be completed with the camera clamped once, which is convenient to use, can improve production efficiency, and reduce human error.

[0041] For a camera parallel eccentricity detection device of the present utility model, the parts not involved are the same as the prior art or can be implemented by using the prior art.

[0042] The above embodiments are only used to further illustrate a camera parallel eccentricity detection device of the present invention, but the present invention is not limited to the embodiments. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A camera parallel eccentricity detection device, comprising a standard camera and an interface component, wherein the interface component is used to connect to a camera interface of a camera to be tested; characterized in that: It also includes a coaxiality detection mechanism, a parallelism detection mechanism and a reflector, the interface component and the standard camera are coaxial and arranged opposite to each other, and a first light passage is arranged between the two, the reflector is tiltedly arranged in the first light passage, and a through hole is provided on the reflector; the coaxiality detection mechanism is connected to the first light passage, and the light emitted by it in a first detection pattern enters the first light passage, and is imaged on the photosensitive sheet of the camera to be tested after being reflected by the reflector; the parallelism detection mechanism is connected to the first light passage, and the light emitted by it in a second detection pattern passes through the through hole to reach the camera to be tested, and is imaged on the standard camera after being reflected by the photosensitive sheet of the camera to be tested and passing through the through hole.

2. The camera parallel eccentricity detection device according to claim 1, characterized in that: The coaxiality detection mechanism includes a second light passage, a first light source assembly and a first standard plane, the second light passage is located beside the first light passage, and one end of the second light passage is connected to the first light passage and corresponds to the reflector; the first light source assembly is arranged at the other end of the second light passage, and the light emitted by it is emitted toward the reflector along the second light passage; the first standard plane is arranged in the second light passage and between the reflector and the first light source assembly, and the first detection pattern is provided on the first standard plane.

3. The camera parallel eccentricity detection device according to claim 2, characterized in that: The coaxiality detection mechanism also includes a first optical lens and a second optical lens arranged in the second light passage, the first optical lens is located between the first standard plane and the reflector, and the second optical lens is located between the first standard plane and the first light source assembly; the first optical lens and the second optical lens are convex lenses respectively.

4. The camera parallel eccentricity detection device according to claim 2, characterized in that: The angle between the reflective surface of the reflector and the axis of the first light passage is 45 degrees, the axis of the second light passage is perpendicular to the axis of the first light passage; the first standard plane is perpendicular to the axis of the second light passage.

5. The camera parallel eccentricity detection device according to claim 1, characterized in that: The parallelism detection mechanism includes a third light passage, an optical prism, a second standard plane and a second light source assembly. The third light passage is located beside the first light passage and on the side of the reflector away from the interface component, and one end of the third light passage is connected to the first light passage. The second light source assembly is arranged at the other end of the third light passage, and the light emitted by it enters the first light passage along the third light passage. The optical prism is arranged at a position in the first light passage corresponding to one end of the third light passage, the second standard plane is arranged in the third light passage and between the optical prism and the second light source assembly, and the second detection pattern is provided on the second standard plane.

6. The camera parallel eccentricity detection device according to claim 5, characterized in that: The parallelism detection mechanism also includes a third optical lens arranged in the third light passage and a fourth optical lens arranged in the first light passage, the third optical lens is located between the second standard plane and the second light source assembly, and the fourth optical lens is located between the optical prism and the reflector; the third optical lens and the fourth optical lens are convex lenses respectively.

7. The camera parallel eccentricity detection device according to claim 5, characterized in that: The axis of the third light passage is perpendicular to the axis of the first light passage, and the second standard plane is perpendicular to the axis of the third light passage.

8. The camera parallel eccentricity detection device according to claim 1, characterized in that: The axis of the through hole, the axis of the first light passage and the axis of the interface component coincide with each other.

9. The camera parallel eccentricity detection device according to claim 1, characterized in that: The reflector is installed in the first light passage through a connecting piece, and the connecting piece is provided with a clearance opening corresponding to the through hole, and the shape and size of the clearance opening match the shape and size of the through hole.

10. The camera parallel eccentricity detection device according to claim 1, characterized in that: The reflector is a total reflector.

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