Light source position adjusting mechanism

Abstract

The invention provides a light source position adjusting mechanism. When the light sensing device is tested, one corner of the adjusting seat can be jacked up to an inclined state by driving the inclined jacking screw rod to rotate, and the light source generator arranged on the adjusting seat is also inclined along with the angle jacking screw rod; light rays emitted by the light source generator are changed from vertically penetrating through the optical lens group to irradiate the to-be-detected photosensitive device to obliquely penetrating through the optical lens group to irradiate the to-be-detected photosensitive device, and when the light rays obliquely penetrate through the optical lens group, the optical lens group is used for refracting the light rays to the to-be-detected photosensitive device and adjusting the inclination angle of the light rays; therefore, various test scenes are created for the to-be-tested photosensitive device, and meanwhile, when the light source generator and the to-be-tested photosensitive device are in a non-parallel state, the light source generator can be adjusted to be parallel to the to-be-tested photosensitive device; the invention belongs to the technical field of test equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of testing equipment, and in particular relates to a light source position adjustment mechanism. Background Art

[0002] Optical components are the main components in optical systems that use optical principles to achieve various functions such as observation, measurement, analysis and recording, information processing, image quality evaluation, energy transmission and conversion, etc. With the progress of society and the continuous development of technology, optical components have also become popular in consumer electronic products. In order to ensure that optical components can operate normally in consumer electronic products, manufacturers generally test the optical components. Conventional optical component testing technology is mostly carried out by irradiating the photosensitive device at a specified position with a fixed light source, so it can only be used for simple scene testing. Summary of the invention

[0003] The purpose of the present invention is to provide a light source position adjustment mechanism to solve the technical problems described in the background technology.

[0004] The light source position adjustment mechanism includes a base plate, the base plate is provided with an adjustment seat and an optical lens group, a light source generator is placed in the adjustment seat, the light source generator is used to emit light that passes through the optical lens group to illuminate the photosensitive device to be tested, the base plate is vertically threadedly connected with an inclined top screw, and the inclined top screw is used to lift one corner of the adjustment seat to a tilted state, so that the light source generator is tilted until the light passes through the optical lens group at a certain tilt angle to illuminate the photosensitive device to be tested.

[0005] According to the technical solution, the present invention can achieve the following beneficial effects: When testing the photosensitive device, since one corner of the adjustment seat can be lifted to a tilted state by driving the inclined lift screw to rotate, the light source generator arranged on the adjustment seat is also tilted accordingly. At this time, the light emitted by the light source generator changes from vertically passing through the optical lens group to irradiate the photosensitive device to be tested to passing through the optical lens group obliquely to irradiate the photosensitive device to be tested. When the light passes through the optical lens group obliquely, the optical lens group is used to refract the light to the photosensitive device to be tested and adjust the angle of the light inclination; therefore, a variety of test scenes are created for the photosensitive device to be tested. At the same time, when the light source generator and the photosensitive device to be tested are in a non-parallel state, the light source generator can be adjusted to be parallel to the photosensitive device to be tested.

[0006] In order to further optimize the above technical solution, it can be optionally combined with one or more of the following implementation methods without conflict.

[0007] In some embodiments, a threaded sleeve is provided in the adjustment seat and is threadedly connected to the outer periphery of the light source generator, so that the light source generator can be raised and lowered by rotating; According to the technical solution, the distance between the light source generator and the optical lens group can be adjusted, thereby further creating more test scenarios for the photosensitive device to be tested and calibrating the test environment.

[0008] In some embodiments, the adjustment seat is threadedly connected with a transverse screw and a longitudinal screw, one end of the transverse screw is connected to the transverse side bearing of the threaded sleeve to push the light source generator to move laterally, and one end of the longitudinal screw is connected to the longitudinal side bearing of the threaded sleeve to push the light source generator to move longitudinally; According to the technical solution, the present invention can further achieve the following beneficial effects: 1. By adjusting the longitudinal and lateral positions of the light source generator, the light source generator can emit light through the optical lens group to the photosensitive device to be tested at different positions, and at the same time, the correctable position range of the light source generator is increased; 2. After the light source generator moves longitudinally and transversely, the light emitted by the light source generator still passes through the optical lens group before irradiating the photosensitive device to be tested. At this time, the refraction of the optical lens group can be used to achieve the light source generator to move a smaller range and adjust the light to move a larger range. Therefore, compared with the traditional use of linear modules or motors to achieve movement of different axial positions and angles, the present invention occupies relatively less space.

[0009] In some embodiments, the bottom plate is mounted with an adjustment slide, the adjustment slide drives a translation stage, and the adjustment seat and the tilting screw are arranged on the translation stage; According to the technical solution, the adjustment slide can drive the light source generator and the optical lens group to move horizontally and vertically, thereby providing an adjustment distance that supplements more margin.

[0010] In some embodiments, the translation platform is vertically threadedly connected to a plurality of the inclined top screws respectively located below the four corners of the adjustment seat; according to the technical method, the adjustment seat can be tilted in different directions.

[0011] In some embodiments, the translation stage is installed with a support frame, the support frame is installed with a horizontal slide groove, the optical lens group is installed with a slider sliding in the horizontal slide groove, and the slider is provided with a screw for fixing to a certain position of the horizontal slide groove; According to the technical solution, the refraction angle of light when passing through the optical lens group can be adjusted by moving the position of the optical lens group.

[0012] In some embodiments, the optical lens assembly includes a lens holder, the lens holder is equipped with a convex lens, a lens sheet, a reflective refractive annulus and a shift slide, the convex lens is close to the light source generator, the lens sheet is close to the photosensitive device to be tested, the reflective refractive annulus is located between the convex lens and the lens sheet and surrounds the outer periphery of the convex lens and the lens sheet, the shift slide drives the convex lens to move horizontally, vertically, up and down, and tilt to adjust the distance and position between the convex lens and the lens sheet, when the light irradiated by the light source generator passes through the convex lens, the light is refracted by the convex lens to the reflective refractive annulus, and the reflective refractive annulus reflects the light, at this time, the light is irradiated to the set position through the lens sheet; According to the technical solution, when the light source generator or the photosensitive device to be tested is fixed, the convex lens is driven to move laterally, longitudinally, up and down, and tilted by a shift slide to adjust the distance and position between the convex lens and the lens sheet. At this time, the light irradiated by the light source generator passes through the convex lens, and the light is refracted by the convex lens to the reflective refractive annular surface. The reflective refractive annular surface reflects the light, so that the light is irradiated to different positions, thereby creating a variety of test scenarios.

[0013] In some embodiments, the outer periphery of the convex lens is provided with an outer slip ring connected to the lens holder, the outer slip ring is provided with convex teeth, the lens holder is installed with a motor, the motor is transmission-connected with a gear meshing with the convex teeth, so that the motor can drive the convex lens to rotate, and the convex portion of the convex lens is eccentrically arranged; According to the technical solution, since the convex part of the convex lens is eccentrically arranged, the convex lens can be driven by the motor driving gear to change the position of the convex part of the convex lens, thereby realizing the refraction angle and range of light. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the present invention, the following is a brief description of the drawings and reference numerals required to be used in describing the specific implementation.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a schematic structural diagram of the optical lens assembly described in Example 1; Figure 4 It is a structural schematic diagram of the adjustment seat part of the present invention; Figure 5 It is a schematic diagram of the structure of the optical lens group described in Example 2.

[0016] Reference numerals: 1. Base plate; 2. Adjustment slide; 21. Translation stage; 3. Optical lens group; 31. Support frame; 32. Horizontal slide; 33. Sliding block; 4. Adjustment seat; 41. Slant top screw; 42. Horizontal screw; 43. Longitudinal screw; 5. Light source generator; 51. Threaded sleeve; 6. Lens bracket; 61. Convex lens; 611. Outer convex part; 62. Lens piece; 63. Reflective and refracting torus; 64. Shift slide; 65. Motor; 66. Gear. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is an enumerated description with reference to the appended drawings.

[0018] like Figures 1 to 5 As shown, this specific embodiment provides a light source position adjustment mechanism including a base plate 1, the base plate 1 is provided with an adjustment seat 4 and an optical lens group 3, a light source generator 5 is placed in the adjustment seat 4, the light source generator 5 is used to emit light that passes through the optical lens group 3 to illuminate the photosensitive device to be tested, the base plate 1 is vertically threadedly connected with an inclined top screw 41, the inclined top screw 41 is used to lift one corner of the adjustment seat 4 to a tilted state, so that the light source generator 5 is tilted until the light passes through the optical lens group 3 at a certain tilt angle to illuminate the photosensitive device to be tested.

[0019] When testing the photosensitive device, since one corner of the adjustment seat 4 can be lifted up to a tilted state by driving the inclined lift screw 41 to rotate, the light source generator 5 arranged on the adjustment seat 4 is also tilted accordingly. At this time, the light emitted by the light source generator 5 changes from vertically passing through the optical lens group 3 to irradiate the photosensitive device to be tested to passing through the optical lens group 3 obliquely to irradiate the photosensitive device to be tested. When the light passes through the optical lens group 3 obliquely, the optical lens group 3 is used to refract the light to the photosensitive device to be tested and adjust the angle of the light inclination; therefore, a variety of test scenes are created for the photosensitive device to be tested. At the same time, when the light source generator 5 and the photosensitive device to be tested are in a non-parallel state, the light source generator 5 can be adjusted to be parallel to the photosensitive device to be tested.

[0020] In some embodiments, a threaded sleeve 51 is provided in the adjustment seat 4 and is threadedly connected to the outer periphery of the light source generator 5, so that the light source generator 5 can be raised and lowered by rotation; by adjusting the distance between the light source generator 5 and the optical lens group 3, more test scenarios can be further created for the photosensitive device to be tested, and the test environment can be calibrated.

[0021] In some embodiments, the adjustment seat 4 is threadedly connected with a transverse screw 42 and a longitudinal screw 43, one end of the transverse screw 42 is connected to the transverse side bearing of the threaded sleeve 51 to push the light source generator 5 to move horizontally, and one end of the longitudinal screw 43 is connected to the longitudinal side bearing of the threaded sleeve 51 to push the light source generator 5 to move longitudinally.

[0022] By adjusting the longitudinal and lateral positions of the light source generator 5 , the light source generator 5 can emit light at different positions through the optical lens group 3 to illuminate the photosensitive device to be tested. At the same time, the correctable position range of the light source generator 5 is increased.

[0023] After the light source generator 5 moves longitudinally and transversely, the light emitted by the light source generator 5 still passes through the optical lens group 3 before irradiating the photosensitive device to be tested. At this time, the refraction of the optical lens group 3 can be used to achieve the light source generator 5 to move a smaller range and adjust the light to move a larger range. Therefore, compared with the traditional use of linear modules or motors to achieve movement of different axial positions and angles, the present invention occupies relatively less space.

[0024] In some embodiments, the bottom plate 1 is installed with an adjustment slide 2 , the adjustment slide 2 drives a translation stage 21 , and the adjustment seat 4 and the inclined top screw 41 are arranged on the translation stage 21 .

[0025] The light source generator 5 and the optical lens group 3 can be driven to move horizontally and vertically by adjusting the slide 2, thereby providing an adjustment distance with more margin.

[0026] In some embodiments, the translation platform 21 is vertically threadedly connected with a plurality of inclined top screws 41 respectively located below the four corners of the adjustment seat 4, so that the adjustment seat 4 can be tilted in different directions.

[0027] In some embodiments, the translation stage 21 is installed with a support frame 31, the support frame 31 is installed with a horizontal slide groove 32, and the optical lens group 3 is installed with a slider 33 located in the horizontal slide groove 32 for sliding, and the slider 33 is provided with a screw for fixing at a certain position of the horizontal slide groove 32; so that the refraction angle of light when passing through the optical lens group 3 can be adjusted by moving the position of the optical lens group 3.

[0028] In some embodiments, the optical lens group 3 includes a lens holder 6, which is equipped with a convex lens 61, a lens sheet 62, a reflective refractive annular surface 63 and a shift slide 64. The convex lens 61 is close to the light source generator 5, and the lens sheet 62 is close to the photosensitive device to be tested. The reflective refractive annular surface 63 is located between the convex lens 61 and the lens sheet 62 and surrounds the outer periphery of the convex lens 61 and the lens sheet 62. The shift slide 64 drives the convex lens 61 to move laterally, longitudinally, up and down, and tilt to adjust the distance and position between the convex lens 61 and the lens sheet 62. When the light irradiated by the light source generator 5 passes through the convex lens 61, the light is refracted through the convex lens 61 to the reflective refractive annular surface 63, and the reflective refractive annular surface 63 reflects the light. At this time, the light is irradiated to the set position through the lens sheet 62.

[0029] When the light source generator 5 or the photosensitive device to be tested is fixed, the convex lens 61 is driven to move horizontally, vertically, up and down, and tilted by the shift slide 64 to adjust the distance and position between the convex lens 61 and the lens sheet 62. At this time, the light irradiated by the light source generator 5 passes through the convex lens 61, and the light is refracted by the convex lens 61 to the reflective refractive annular surface 63. The reflective refractive annular surface 63 reflects the light so that the light is irradiated to different positions, thereby creating a variety of test scenarios.

[0030] In some embodiments, the outer periphery of the convex lens 61 is provided with an outer slip ring connected to the lens holder 6, and the outer slip ring is provided with convex teeth. The lens holder 6 is installed with a motor 65, and the motor 65 is transmission-connected to a gear 66 meshing with the convex teeth so that the motor 65 can drive the convex lens 61 to rotate, and the convex portion 611 of the convex lens 61 is eccentrically arranged.

[0031] Since the convex portion 611 of the convex lens 61 is eccentrically arranged, the motor 65 can drive the gear 66 to drive the convex lens 61 and change the position of the convex portion 611 of the convex lens 61, thereby realizing the refraction angle and range of the light.

[0032] In order to further illustrate the light source position adjustment mechanism described in this specific implementation, the following embodiments are listed.

[0033] Example 1 like Figures 1 to 4 As shown, this embodiment provides a light source position adjustment mechanism, which includes a base plate 1, on which an adjustment slide 2 is installed, and the adjustment slide 2 drives a translation stage 21 that can move horizontally and vertically.

[0034] The translation stage 21 is installed with a support frame 31 , and the support frame 31 is installed with a horizontal slide groove 32 . A slider 33 slides in the horizontal slide groove 32 . The slider 33 is provided with screws for fixing at a certain position of the horizontal slide groove 32 . The optical lens group 3 is installed on the slider 33 .

[0035] An adjustment seat 4 is arranged on the translation stage 21. The translation stage 21 is vertically threadedly connected with a plurality of inclined top screws 41 respectively located below the four corners of the adjustment seat 4. The inclined top screws 41 are connected with the bearings on the lower wall of the adjustment seat 4. A threaded sleeve 51 is placed in the adjustment seat 4. The adjustment seat 4 is threadedly connected with a transverse screw 42 and a longitudinal screw 43. One end of the transverse screw 42 is connected with the transverse side bearing of the threaded sleeve 51 to push the threaded sleeve 51 to move transversely. One end of the longitudinal screw 43 is connected with the longitudinal side bearing of the threaded sleeve 51 to push the threaded sleeve 51 to move longitudinally. The threaded sleeve 51 is provided with an internal thread. The threaded sleeve 51 is installed with a light source generator 5 through the internal thread. The threaded sleeve 51 is threadedly connected to the outer periphery of the light source generator 5. The height can be adjusted when the light source generator 5 is rotated. The light source generator 5 is used to emit light that passes through the optical lens group 3 and irradiates the photosensitive device to be tested.

[0036] The following is a description of the use of a light source position adjustment mechanism described in this embodiment.

[0037] When testing the photosensitive device to be tested, the light source generator 5 is used to emit light that passes through the optical lens group 3 and irradiates the photosensitive device to be tested, so as to create a test environment for the photosensitive device to be tested.

[0038] During the test, the tilting screw 41 can be driven to rotate to lift one or more corners of the adjustment seat 4 to a tilted state. At this time, the light emitted by the light source generator 5 changes from vertically passing through the optical lens group 3 to irradiate the photosensitive device to be tested to obliquely passing through the optical lens group 3 to irradiate the photosensitive device to be tested. When the light passes through the optical lens group 3 obliquely, the optical lens group 3 refracts the light to the photosensitive device to be tested, so as to create another test scene for the photosensitive device to be tested. In addition, the light source generator 5 is driven to rotate to adjust the height of the light source generator 5. At this time, the distance between the light source generator 5 and the optical lens group 3 also changes accordingly, so as to achieve Another test scene and calibration test environment are created for the photosensitive device to be tested; in addition, by driving the transverse screw 42 and the longitudinal screw 43 to rotate, the threaded sleeve 51 is moved horizontally and vertically. At this time, the light source generator 5 on the threaded sleeve 51 also moves horizontally and vertically. At this time, the refraction of the optical lens group 3 can be used to realize the light source generator 5 to move a smaller range, and adjust the light to move a larger range, and the position of the light source generator 5 can also be corrected; in addition, the adjustment slide 2 can drive the light source generator 5 and the optical lens group 3 to move horizontally and vertically, so as to synchronously adjust the position of the source generator and the optical lens group 3 between the photosensitive device to be tested.

[0039] Example 2 like Figure 1 , 2 , 4 and 5 This embodiment provides a light source position adjustment mechanism, which includes a base plate 1, on which an adjustment slide 2 is installed, and the adjustment slide 2 drives a translation stage 21 that can move horizontally and vertically.

[0040] The translation stage 21 is installed with a support frame 31, and the support frame 31 is installed with a horizontal slide groove 32. A slider 33 slides in the horizontal slide groove 32. The slider 33 is provided with a screw for fixing at a certain position of the horizontal slide groove 3232, and an optical lens group 3 is installed on the slider 33.

[0041] An adjustment seat 4 is arranged on the translation stage 21. The translation stage 21 is vertically threadedly connected with a plurality of inclined top screws 41 respectively located below the four corners of the adjustment seat 4. The inclined top screws 41 are connected with the bearings on the lower wall of the adjustment seat 4. A threaded sleeve 51 is placed in the adjustment seat 4. The adjustment seat 4 is threadedly connected with a transverse screw 42 and a longitudinal screw 43. One end of the transverse screw 42 is connected with the transverse side bearing of the threaded sleeve 51 to push the threaded sleeve 51 to move transversely. One end of the longitudinal screw 43 is connected with the longitudinal side bearing of the threaded sleeve 51 to push the threaded sleeve 51 to move longitudinally. The threaded sleeve 51 is provided with an internal thread. The threaded sleeve 51 is installed with a light source generator 5 through the internal thread. The threaded sleeve 51 is threadedly connected to the outer periphery of the light source generator 5. The height can be adjusted when the light source generator 5 is rotated. The light source generator 5 is used to emit light that passes through the optical lens group 3 and irradiates the photosensitive device to be tested.

[0042] The optical lens group 3 includes a lens holder 6, on which a convex lens 61, a lens sheet 62, a reflective refracting annular surface 63 and a shift slide 64 are installed. The convex lens 61 is close to the light source generator 5, and the lens sheet 62 is close to the photosensitive device to be tested. The reflective refracting annular surface 63 is located between the convex lens 61 and the lens sheet 62 and surrounds the outer periphery of the convex lens 61 and the lens sheet 62. The shift slide 64 drives the convex lens 61 to move laterally, longitudinally, up and down, and tilt to adjust the distance and position between the convex lens 61 and the lens sheet 62. When the light irradiated by the light source generator 5 passes through the convex lens 61, the light is refracted through the convex lens 61 to the reflective refracting annular surface 63, and the reflective refracting annular surface 63 reflects the light. At this time, the light is irradiated to the set position through the lens sheet 62.

[0043] The outer periphery of the convex lens 61 is provided with an outer slip ring connected to the lens holder 6, and the outer slip ring is provided with convex teeth. The lens holder 6 is installed with a motor 65, and the motor 65 is transmission-connected to a gear 66 meshing with the convex teeth so that the motor 65 can drive the convex lens 61 to rotate. The convex portion 611 of the convex lens 61 is eccentrically arranged.

[0044] The following is a description of the use of a light source position adjustment mechanism described in this embodiment.

[0045] When testing the photosensitive device to be tested, the light source generator 5 is used to emit light that passes through the optical lens group 3 and irradiates the photosensitive device to be tested, so as to create a test environment for the photosensitive device to be tested.

[0046] During the test, the tilting screw 41 can be driven to rotate to lift one or more corners of the adjustment seat 4 to a tilted state. At this time, the light emitted by the light source generator 5 changes from vertically passing through the optical lens group 3 to irradiate the photosensitive device to be tested to obliquely passing through the optical lens group 3 to irradiate the photosensitive device to be tested. When the light passes through the optical lens group 3 obliquely, the optical lens group 3 refracts the light to the photosensitive device to be tested, so as to create another test scene for the photosensitive device to be tested. In addition, the light source generator 5 is driven to rotate to adjust the height of the light source generator 5. At this time, the distance between the light source generator 5 and the optical lens group 3 also changes accordingly, so as to give Another test scene and calibration test environment are created for the photosensitive device to be tested; in addition, by driving the transverse screw 42 and the longitudinal screw 43 to rotate, the threaded sleeve 51 is moved horizontally and vertically. At this time, the light source generator 5 on the threaded sleeve 51 also moves horizontally and vertically. At this time, the refraction of the optical lens group 3 can be used to realize the light source generator 5 to move a smaller range, and adjust the light to move a larger range, and the position of the light source generator 5 can also be corrected; in addition, the adjustment slide 2 can drive the light source generator 55 and the optical lens group 3 to move horizontally and vertically, so as to synchronously adjust the position of the source generator and the optical lens group 3 between the photosensitive device to be tested.

[0047] In addition, when the light source generator 5 or the photosensitive device to be tested is fixed, the convex lens 61 is driven to move horizontally, vertically, up and down, and tilted by the shift slide 64 to adjust the distance and position between the convex lens 61 and the lens sheet 62. At this time, the light irradiated by the light source generator 5 passes through the convex lens 61, and the light is refracted by the convex lens 61 to the reflective refractive annular surface 63. The reflective refractive annular surface 63 reflects the light, so that the light is irradiated to different positions, thereby creating a variety of test scenes. At the same time, the motor 65 can drive the gear 66 to drive the convex lens 61 to change the position of the convex portion 611 of the convex lens 61, thereby realizing the refraction angle and range of the light.

Claims

1. A light source position adjustment mechanism, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with an adjustment seat (4) and an optical lens group (3); a light source generator (5) is placed inside the adjustment seat (4); the light source generator (5) is used to emit light that passes through the optical lens group (3) and irradiates the photosensitive device to be tested; the bottom plate (1) is vertically threadedly connected with an inclined top screw (41); the inclined top screw (41) is used to lift a corner of the adjustment seat (4) to an inclined state, so that the light source generator (5) is tilted until the light passes through the optical lens group (3) at a certain inclined angle and irradiates the photosensitive device to be tested.

2. A light source position adjustment mechanism according to claim 1, characterized in that: A threaded sleeve (51) is provided in the adjustment seat (4) and is threadedly connected to the outer periphery of the light source generator (5), so that the light source generator (5) can be raised and lowered by rotating.

3. A light source position adjustment mechanism according to claim 2, characterized in that: The adjustment seat (4) is threadedly connected with a transverse screw rod (42) and a longitudinal screw rod (43); one end of the transverse screw rod (42) is connected to a transverse side bearing of the threaded sleeve (51) to push the light source generator (5) to move transversely; and one end of the longitudinal screw rod (43) is connected to a longitudinal side bearing of the threaded sleeve (51) to push the light source generator (5) to move longitudinally.

4. The light source position adjustment mechanism according to claim 1, characterized in that: The bottom plate (1) is installed with an adjustment slide (2), the adjustment slide (2) drives a translation platform (21), and the adjustment seat (4) and the inclined top screw (41) are arranged on the translation platform (21).

5. A light source position adjustment mechanism according to claim 4, characterized in that: The translation platform (21) is vertically threadedly connected to a plurality of inclined top screws (41) respectively located below the four corners of the adjustment seat (4).

6. A light source position adjustment mechanism according to claim 4, characterized in that: The translation platform (21) is installed with a support frame (31), the support frame (31) is installed with a horizontal slide groove (32), the optical lens group (3) is installed with a slider (33) located in the horizontal slide groove (32) and sliding, and the slider (33) is provided with a screw for fixing to a certain position of the horizontal slide groove (32).

7. The light source position adjustment mechanism according to claim 1, characterized in that: The optical lens group (3) comprises a lens holder (6), the lens holder (6) being provided with a convex lens (61), a lens sheet (62), a reflective refracting annular surface (63) and a shift slide (64), the convex lens (61) being close to the light source generator (5), the lens sheet (62) being close to the photosensitive device to be tested, the reflective refracting annular surface (63) being located between the convex lens (61) and the lens sheet (62) and surrounding the outer periphery of the convex lens (61) and the lens sheet (62), and the shift slide (64) being arranged on the convex lens (61) and the lens sheet (62). The stage (64) drives the convex lens (61) to move horizontally, vertically, up and down, and tilt, so as to adjust the distance and position between the convex lens (61) and the lens sheet (62). When the light irradiated by the light source generator (5) passes through the convex lens (61), the light is refracted by the convex lens (61) to the reflective refractive annular surface (63), and the reflective refractive annular surface (63) reflects the light. At this time, the light passes through the lens sheet (62) and irradiates to a set position.

8. A light source position adjustment mechanism according to claim 7, characterized in that: An outer slip ring connected to the lens holder (6) is provided on the outer periphery of the convex lens (61), the outer slip ring being provided with convex teeth, the lens holder (6) being provided with a motor (65), the motor (65) being transmission-connected to a gear (66) meshing with the convex teeth, so that the motor (65) can drive the convex lens (61) to rotate, and the outer convex portion (611) of the convex lens (61) is eccentrically arranged.

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