Detection equipment for lens

Abstract

The invention relates to the technical field of optical detection equipment, in particular to lens detection equipment which comprises a supporting platform, a fixing mechanism and a detection mechanism, the fixing mechanism comprises a supporting seat and a fixing tool, the supporting seat is fixedly arranged on the supporting platform, the fixing tool is detachably arranged on the supporting seat, a to-be-detected lens is fixed on the fixing tool, and the detection mechanism is arranged on the supporting platform. The detection mechanism comprises a mask plate and a camera, the mask plate and the camera are movably arranged on the supporting platform, the mask plate and the camera are sequentially arranged and located below the to-be-detected lens, and the center points of the to-be-detected lens, the mask plate and the camera are located on the same vertical line. According to the detection equipment for the lens, the central points of the to-be-detected lens, the mask plate and the camera are finally positioned on the same vertical line by adjusting the displacement and angle of the mask plate and the displacement of the camera, so that the detection efficiency is improved, the magnification value and the distortion value of the lens can be quickly detected, and the detection accuracy is improved. And the use cost of the detection equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection devices, and particularly relates to a detection device for a lens. Background Art

[0002] Currently, as a basic measurement device for precision optical devices (such as lenses), an optical test platform needs to fully consider multiple aspects such as stability, precision, vibration isolation performance, and operation convenience during design to ensure that the optical test platform can meet the measurement requirements of various precision optical devices. When the existing optical test platform performs the overall magnification and distortion tests on an optical test piece, precision is one of the core indicators of the optical test platform.

[0003] In order to achieve high-precision optical measurement, the existing optical test platforms are usually equipped with precise adjustment mechanisms, such as fine adjustment knobs or electric adjustment devices in the three axes of X, Y, and Z, so as to perform precise displacement and angle adjustment on the optical test piece. However, the adjustment speed of the optical test piece such as a lens is still relatively slow, which affects the detection efficiency of the lens; and due to the precision and complexity of the image data and the diversity of technical indicators, the analysis result of the lens requires a large amount of time and effort, increasing the use cost of the optical test platform. Therefore, there is an urgent need for a detection device for a lens to solve the above problems. Summary of the Invention

[0004] In order to solve the technical problems that when the existing optical test platform performs the overall magnification and distortion tests on a lens, the adjustment speed of the lens is still relatively slow, which affects the detection efficiency of the lens; and due to the precision and complexity of the image data and the diversity of technical indicators, the analysis result of the lens requires a large amount of time and effort, increasing the use cost of the optical test platform, the present invention provides a detection device for a lens. By adjusting the displacement and angle of the mask plate and the displacement of the camera, finally making the center points of the lens to be detected, the mask plate, and the camera on the same vertical line, the detection efficiency of the lens is improved, and then the magnification value and distortion value of the lens can be quickly detected, saving the time for the lens analysis result and reducing the use cost of the detection device.

[0005] The present invention provides a detection device for a lens, including a support platform, a fixing mechanism, and a detection mechanism. The fixing mechanism includes a support base and a fixing tooling. The support base is fixedly arranged on the support platform. The fixing tooling is detachably arranged on the support base, and the lens to be detected is fixed on the fixing tooling. The detection mechanism includes a mask plate and a camera. The mask plate and the camera are movably arranged on the support platform. The mask plate and the camera are arranged in sequence and are located below the lens to be detected. The central points of the lens to be detected, the mask plate, and the camera are on the same vertical line. The lens to be detected is fixed on the fixing tooling, and the fixing tooling is then fixed on the support base. The mask plate quickly adjusts its displacement and angle according to the position of the lens to be detected, and the mask plate is aligned with the best focal plane of the lens to be detected. The camera quickly adjusts its displacement according to the position of the lens to be detected, and the camera is aligned with the mask plate. Finally, the central points of the lens to be detected, the mask plate, and the camera are on the same vertical line.

[0006] Further, the detection mechanism further includes a Z-axis manual slide, an XY-axis manual slide, and a three-axis drive module. The Z-axis manual slide is adjustably arranged on the support platform. A bracket is fixedly arranged on the Z-axis movable plate of the Z-axis manual slide. The XY-axis manual slide is fixedly arranged on the bracket. A lens plate is fixedly arranged on the Y-axis movable plate of the XY-axis manual slide. The mask plate is adjustably arranged on the lens plate. The three-axis drive module is fixedly arranged on the support platform. An installation plate is fixedly arranged on the Z-axis slider of the three-axis drive module. The camera is fixedly arranged on the installation plate. A person manually adjusts the Z-axis manual slide and the XY-axis manual slide. Finally, the mask plate realizes displacement adjustment in the three directions of the X, Y, and Z axes, and finally the mask plate is aligned with the best focal plane of the lens to be detected. The three-axis drive module is started, driving the installation plate and the camera to perform displacement adjustment in the three directions of the X, Y, and Z axes, and finally the camera is aligned with the mask plate.

[0007] Further, the detection mechanism further includes a fixing plate, a first adjustment plate, and a second adjustment plate. The fixing plate is fixedly arranged on the support platform. The first adjustment plate is adjustably arranged on the fixing plate. The second adjustment plate is adjustably arranged on the first adjustment plate. The Z-axis manual slide is fixedly arranged on the second adjustment plate. Through the first adjustment plate and the second adjustment plate, the mask plate realizes angle adjustment in the two directions of the X and Y axes.

[0008] Further, a first through hole is provided on the first adjusting plate, and a first bolt passes through the first through hole and is screwed on the fixing plate. A first set screw is threadedly arranged on the first adjusting plate. The first set screw penetrates through the first adjusting plate and the bottom of the first set screw abuts against the fixing plate. There are two first bolts and first set screws. A second through hole is provided on the second adjusting plate, and a second bolt passes through the second through hole and is screwed on the first adjusting plate. A second set screw is threadedly arranged on the second adjusting plate. The second set screw penetrates through the second adjusting plate and the bottom of the second set screw abuts against the first adjusting plate. There are two second bolts and second set screws.

[0009] Further, a first groove and a first opening communicating with each other are provided on the lens plate, and the first opening is located below the first groove. A lens holder is adjustably arranged in the first groove. A second groove and a second opening communicating with each other are provided on the lens holder, and the second opening is located below the second groove. The mask plate is placed in the second groove, and the mask plate corresponds to the first opening and the second opening. A pressing plate is screwed on the lens holder. The pressing plate is located above the mask plate and presses it in the second groove. A person manually places the mask plate in the second groove of the lens holder, and then the pressing plate is fixed on the lens holder. The pressing plate is located above the mask plate and presses it in the second groove. The pressing plate ensures that the mask plate remains fixed during the detection process.

[0010] Further, a strip-shaped hole with a radian is provided on the lens holder. A third bolt passes through the strip-shaped hole and is screwed on the first groove. Two third set screws are threadedly arranged on the lens plate and are arranged oppositely. Both of the two third set screws penetrate through the lens plate and the bottoms of the two third set screws abut against the lens holder.

[0011] Further, the support seat includes a side plate, a first support plate, a second support plate and a top plate. The side plate is fixedly arranged on the support platform. The first support plate and the second support plate are fixedly arranged on the side plate. The top plate is adjustably arranged on the first support plate and the second support plate. An arc-shaped notch is provided on the top plate. The fixing tooling is screwed on the top plate and is located above the arc-shaped notch. The lens to be detected passes through the arc-shaped notch.

[0012] Further, the top plate is screwed on the first support plate and the second support plate. A slot and a plurality of micrometer heads located on the side of the slot are provided on the top plate. There are gaps between the slot and the upper surfaces of the first support plate and the second support plate. The plurality of micrometer heads are located on both sides of the arc-shaped notch. The tops of the plurality of micrometer heads are all located above the top plate. The bottoms of the plurality of micrometer heads respectively abut against the first support plate and the second support plate.

[0013] Further, the fixing tooling includes a tooling cylinder and side plates fixedly arranged on the tooling cylinder. The side plates are screwed on the top plate, and the lens to be detected penetrates and is fixedly arranged on the tooling cylinder and the side plates.

[0014] Further, the detection device further includes a standing frame and a plurality of anti-vibration air cushions. A plurality of first adjusting bolts are screwed on the top of the standing frame, and all of the plurality of first adjusting bolts are in contact with the support platform; a plurality of second adjusting bolts are screwed on one side of the bottom of the standing frame, and support feet are fixedly arranged on all of the plurality of second adjusting bolts. The plurality of support feet are respectively in contact with a part of the anti-vibration air cushions, and the other side of the bottom of the standing frame is in contact with the remaining anti-vibration air cushions. The height of the first adjusting bolts can be adjusted, and the height of the second adjusting bolts can be adjusted. When the working ground is uneven, by adjusting the positions of the first adjusting bolts and the second adjusting bolts, the support platform, that is, the whole detection device, can be kept horizontal.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the detection process of the detection device in this embodiment, the lens to be detected is fixed on the fixing tooling, and the fixing tooling is then fixed on the support base. The mask plate quickly adjusts its displacement and angle according to the position of the lens to be detected, and the mask plate is aligned with the best focal plane of the lens to be detected. The camera quickly adjusts its displacement according to the position of the lens to be detected, and the camera is aligned with the mask plate. Finally, the central points of the lens to be detected, the mask plate, and the camera are on the same vertical line. The camera quickly captures the fitted image on the mask plate, and then by calculating the information of the fitted image, the magnification value and distortion value of the lens to be detected can be quickly detected, thereby saving the time for the lens analysis result and reducing the use cost of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a lens detection device of the present invention; Figure 2 is the present invention Figure 1 The enlarged schematic diagram of the structure of A in; Figure 3 is a schematic structural diagram of the support base of the present invention; Figure 4 is a schematic structural diagram of the tooling cylinder of the present invention; Figure 5 is a schematic structural diagram of the Z-axis manual sliding table of the present invention; Figure 6 is a schematic structural diagram of the fixing plate of the present invention; Figure 7 is a schematic structural diagram of the first adjusting plate of the present invention; Figure 8 The schematic structural diagram of the second adjusting plate of the present invention; Figure 9 Exploded structural schematic diagram of the lens plate and lens holder of the present invention; Figure 10 It is a structural schematic diagram of the shock-proof air cushion of the present invention; The reference numerals in the drawings are: 1. Support platform; 2. Support base; 21. Side plate; 22. First support plate; 23. Second support plate; 24. Top plate; 25. Groove; 26. Micrometer head; 27. Positioning block; 3. Fixing tooling; 31. Tooling cylinder; 32. Side plate; 4. Mask plate; 5. Camera; 6. Z-axis manual slide; 61. Bracket; 62. Fixed plate; 621. First card slot; 63. First adjusting plate; 631. First bolt; 632. First setscrew; 633. First card block; 634. Second card slot; 64. Second adjusting plate; 641. Second bolt; 642. Second setscrew; 643. Second card block; 7. XY-axis manual slide; 71. Lens plate; 711. Third bolt; 712. Third setscrew; 713. Limit block; 72. Lens holder; 73. Pressure plate; 8. Three-axis drive module; 81. Mounting plate; 9. Upright frame; 91. Shock-proof air cushion; 92. First adjusting bolt; 93. Second adjusting bolt; 94. Support foot. Detailed implementation manners

[0017] The present invention will be further described below in conjunction with the drawings and specific implementation manners.

[0018] As Figures 1 to 10 shown, a detection device for a lens includes a support platform 1, a fixing mechanism and a detection mechanism. The support platform 1 can be made of a material with high strength and low deformation, such as high-quality marble, to ensure the overall rigidity of the support platform 1 and the stability during long-term use. The fixing mechanism includes a support base 2 and a fixing tooling 3. The support base 2 is fixedly arranged on the support platform 1, and the fixing tooling 3 is detachably arranged on the support base 2 and the lens to be detected is fixed on the fixing tooling 3. The detection mechanism includes a mask plate 4 and a camera 5. The camera 5 is a CCD camera. The mask plate 4 and the camera 5 are movably arranged on the support platform 1. The mask plate 4 and the camera 5 are arranged in sequence and are located below the lens to be detected. The center points of the lens to be detected, the mask plate 4 and the camera 5 are on the same vertical line.

[0019] In the detection process of the detection device of this embodiment, the lens to be detected is fixed on the fixing tooling 3, and the fixing tooling 3 is further fixed on the support base 2. The mask plate 4 quickly adjusts its displacement and angle according to the position of the lens to be detected. The mask plate 4 is aligned with the best focal plane of the lens to be detected. The camera 5 quickly adjusts its displacement according to the position of the lens to be detected. The camera 5 is aligned with the mask plate 4. Finally, the central points of the lens to be detected, the mask plate 4, and the camera 5 are on the same vertical line. The camera 5 quickly captures the fitted image on the mask plate 4. The shooting speed of the camera 5 is fast and the shooting efficiency is high. Then, by calculating the information of the fitted image, the magnification value and distortion value of the lens to be detected can be quickly detected, thus saving the time for analyzing the lens results and reducing the usage cost of the detection device. And the detection device of this embodiment is applicable to the detection of lenses of various sizes and models.

[0020] Compared with the existing optical test platform, in the detection device of this embodiment, by adjusting the displacement and angle of the mask plate 4 and the displacement of the camera 5, finally the central points of the lens to be detected, the mask plate 4, and the camera 5 are on the same vertical line, improving the detection efficiency of the lens. Furthermore, it can quickly detect the magnification value and distortion value of the lens, saving the time for analyzing the lens results and reducing the usage cost of the detection device.

[0021] As an implementable mode, the detection mechanism further includes a Z-axis manual slide 6, an XY-axis manual slide 7, and a three-axis drive module 8. The Z-axis manual slide 6 is adjustably arranged on the support platform 1. A bracket 61 is fixedly arranged on the Z-axis movable plate of the Z-axis manual slide 6. The XY-axis manual slide 7 is fixedly arranged on the bracket 61. A lens plate 71 is fixedly arranged on the Y-axis movable plate of the XY-axis manual slide 7. The mask plate 4 is adjustably arranged on the lens plate 71. The three-axis drive module 8 is fixedly arranged on the support platform 1. An installation plate 81 is fixedly arranged on the Z-axis slider of the three-axis drive module 8. The camera 5 is fixedly arranged on the installation plate 81. The structures of the Z-axis manual slide 6, the XY-axis manual slide 7, and the three-axis drive module 8 are prior arts, and will not be elaborated in this embodiment. The model of the Z-axis manual slide 6 adopted in this embodiment can be LZ60, the model of the XY-axis manual slide 7 adopted can be LBY60, and the model of the three-axis drive module 8 adopted can be TPA-LMPS-1X1Y1Z-01-0052. Among them, the three-axis drive module 8 includes an X-axis servo module, a Y-axis servo module, and a Z-axis servo module. The X-axis servo module is fixedly arranged on the support platform 1. The Y-axis servo module is fixedly arranged on the X-axis slider of the X-axis servo module. The Z-axis servo module is fixedly arranged on the Y-axis slider of the Y-axis servo module. An installation plate 81 is fixedly arranged on the Z-axis slider of the Z-axis servo module.

[0022] The Z-axis manual slide table 6 drives the XY-axis manual slide table 7 and the mask plate 4 to perform displacement adjustment in the Z-axis direction, and the XY-axis manual slide table 7 drives the mask plate 4 to perform displacement adjustment in the two directions of the XY-axis. A person manually adjusts the Z-axis manual slide table 6 and the XY-axis manual slide table 7, and finally the mask plate 4 realizes displacement adjustment in the three directions of the XYZ axis, and finally aligns the mask plate 4 at the best focal plane of the lens to be detected.

[0023] The three-axis drive module 8 is started, driving the mounting plate 81 and the camera 5 to perform displacement adjustment in the three directions of the XYZ axis, and finally aligning the camera 5 with the mask plate 4.

[0024] As an implementable manner, the detection mechanism further includes a fixing plate 62, a first adjusting plate 63 and a second adjusting plate 64. The fixing plate 62 is fixedly arranged on the support platform 1. The first adjusting plate 63 is adjustably arranged on the fixing plate 62. The second adjusting plate 64 is adjustably arranged on the first adjusting plate 63. The Z-axis manual slide table 6 is fixedly arranged on the second adjusting plate 64. Through the first adjusting plate 63 and the second adjusting plate 64, the mask plate 4 of this embodiment realizes angle adjustment in the two directions of the XY axis.

[0025] As an implementable manner, the first adjusting plate 63 is provided with a first through hole, and a first bolt 631 passes through the first through hole and is screwed on the fixing plate 62. A first jackscrew 632 is threadedly arranged on the first adjusting plate 63. The first jackscrew 632 penetrates through the first adjusting plate 63 and the bottom of the first jackscrew 632 abuts against the fixing plate 62. There are two first bolts 631 and first jackscrews 632; the second adjusting plate 64 is provided with a second through hole, and a second bolt 641 passes through the second through hole and is screwed on the first adjusting plate 63. A second jackscrew 642 is threadedly arranged on the second adjusting plate 64. The second jackscrew 642 penetrates through the second adjusting plate 64 and the bottom of the second jackscrew 642 abuts against the first adjusting plate 63. There are two second bolts 641 and second jackscrews 642.

[0026] In this embodiment, the two first bolts 631 and the first jackscrew 632 act together to realize the adjustment of the levelness of the first adjusting plate 63. The levelness of the first adjusting plate 63 is adjusted according to the extension length of the first jackscrew 632, that is, the first jackscrew 632 drives the first adjusting plate 63 to perform angle adjustment in the Y-axis direction. Rotate the first jackscrew 632, the first jackscrew 632 extends or retracts, the bottom of the first jackscrew 632 abuts against the fixing plate 62, and then the first bolt 631 passes through the first through hole and is screwed on the fixing plate 62 (the first adjusting plate 63 is fixed on the fixing plate 62). At this time, the levelness of the first adjusting plate 63 is determined (when the first jackscrew 632 is shortened, the first adjusting plate 63 is closer to horizontal; when the first jackscrew 632 is elongated, the inclination angle of the first adjusting plate 63 is larger).

[0027] In this embodiment, the two second bolts 641 and the second set screws 642 act together to adjust the level of the second adjusting plate 64. The level of the second adjusting plate 64 is adjusted according to the extending length of the second set screw 642, that is, the second set screw 642 drives the second adjusting plate 64 to perform an angular adjustment in the X-axis direction. Rotate the second set screw 642, the second set screw 642 extends or retracts, the bottom of the second set screw 642 abuts against the fixed plate 62, and then the second bolt 641 passes through the second through hole and is threadedly arranged on the first adjusting plate 63 (the second adjusting plate 64 is fixed on the first adjusting plate 63). At this time, the level of the second adjusting plate 64 is determined (when the second set screw 642 is shortened, the second adjusting plate 64 is closer to the horizontal; when the second set screw 642 extends, the inclination angle of the second adjusting plate 64 is larger).

[0028] Through the fixed plate 62, the first adjusting plate 63 and the second adjusting plate 64, as well as the first set screw 632 and the second set screw 642, the mask plate 4 of this embodiment can perform angular adjustments in two directions of the XY axis.

[0029] Preferably, the fixed plate 62 is provided with a first card slot 621 and a first threaded hole communicating with the first card slot 621. The first adjusting plate 63 is provided with a first card block 633, and the first card block 633 is snapped into the first card slot 621; the first bolt 631 passes through the first through hole and is threadedly arranged in the first threaded hole of the fixed plate 62, and the first set screw 632 penetrates through the first adjusting plate 63 and the bottom of the first set screw 632 abuts against the first card slot 621 of the fixed plate 62.

[0030] Preferably, the first adjusting plate 63 is provided with a second card slot 634 and a second threaded hole communicating with the second card slot 634. The second adjusting plate 64 is provided with a second card block 643, and the second card block 643 is snapped into the second card slot 634; the second bolt 641 passes through the second through hole and is threadedly arranged in the second threaded hole of the first adjusting plate 63, and the bottom of the second set screw 642 abuts against the second card slot 634 of the first adjusting plate 63.

[0031] As an implementable manner, the lens plate 71 is provided with a first groove and a first opening communicating with each other, and the first opening is located below the first groove. An adjustable lens holder 72 is arranged in the first groove. The lens holder 72 is provided with a second groove and a second opening communicating with each other, and the second opening is located below the second groove. The mask plate 4 is placed in the second groove and the mask plate 4 corresponds to the first opening and the second opening. A pressing plate 73 is screwed on the lens holder 72. The pressing plate 73 is located above the mask plate 4 and presses it in the second groove. In this embodiment, two pressing plates 73 are provided, and the two pressing plates 73 press on both sides of the mask plate 4.

[0032] A person manually places the mask plate 4 in the second groove, and then the pressing plate 73 is fixed to the lens holder 72. The pressing plate 73 is located above the mask plate and presses it in the second groove. The pressing plate 73 ensures that the mask plate 4 remains stationary during the detection process. The first opening and the second opening ensure that the camera 5 can quickly capture the fitted image on the mask plate 4.

[0033] A person manually adjusts the position of the lens holder 72 on the lens plate 71, and finally the mask plate 4 realizes angle adjustment in the Z-axis direction.

[0034] Preferably, a plurality of limiting blocks 713 are uniformly arranged in the second groove, and the plurality of limiting blocks 713 limit the position of the mask plate 4 in the second groove.

[0035] As an implementable manner, the lens holder 72 is provided with a strip-shaped hole and the strip-shaped hole has a radian. The third bolt 711 passes through the strip-shaped hole and is screwed on the first groove. Two third set screws 712 are threadedly arranged on the lens plate 71 and the two third set screws 712 are arranged oppositely. Both of the two third set screws 712 penetrate through the lens plate 71 and the bottoms of the two third set screws 712 abut against the lens holder 72. Specifically, the lens plate 71 is provided with a third threaded hole, and the third bolt 711 passes through the strip-shaped hole and is threadedly arranged in the third threaded hole of the lens plate 71. And the lens holder 72 is provided with a third through hole, and the third bolt 711 can also pass through the third through hole and be screwed on the first groove.

[0036] The parallelism of the lens holder 72 is adjusted according to the extending lengths of the two third set screws 712, that is, the two third set screws 712 drive the lens holder 72 to perform angle adjustment in the Z-axis direction. Rotate the two third set screws 712, one third set screw 712 extends or retracts, and the other third set screw 712 retracts or extends. The bottoms of the two third set screws 712 abut against the lens holder 72. Then the third bolt 711 passes through the strip-shaped hole and is screwed on the lens plate 71 (the lens holder 72 is fixed to the lens plate 71). At this time, the parallelism of the lens holder 72 is determined (the lens holder 72 is closer to horizontal or the inclination angle of the lens holder 72 is larger). The strip-shaped hole ensures that after the inclination angle of the lens holder 72 changes, the third bolt 711 can always fix the lens holder 72 to the lens plate 71.

[0037] Through the lens plate 71, the lens holder 72 and the two third set screws 712, the mask plate 4 of this embodiment realizes angle adjustment in the Z-axis direction.

[0038] The mask plate 4 of this embodiment finally realizes six-dimensional adjustment and compensation. That is, a person manually adjusts the Z-axis manual slide 6 and the XY-axis manual slide 7, and the mask plate 4 realizes displacement adjustment in the three directions of the XYZ axes; through the fixing plate 62, the first adjusting plate 63 and the second adjusting plate 64, as well as the first set screw 632 and the second set screw 642, the mask plate 4 realizes angle adjustment in the two directions of the XY axes. Through the lens plate 71, the lens holder 72 and the two third set screws 712, the mask plate 4 realizes angle adjustment in the Z-axis direction. The mask plate 4 quickly adjusts the displacement and angle according to the position of the lens to be detected. Finally, the mask plate 4 is aligned with the best focal plane of the lens to be detected. Among them, the Z-axis range of the mask plate 4 is ±6.5 mm, and the XY-axis range of the mask plate 4 is ±6.5 mm, which can meet the adjustment requirements of different lenses for the mask plate 4.

[0039] As an implementable manner, the support base 2 includes a side plate 21, a first support plate 22, a second support plate 23 and a top plate 24. The side plate 21 is fixedly arranged on the support platform 1. The first support plate 22 and the second support plate 23 are fixedly arranged on the side plate 21. The top plate 24 is adjustably arranged on the first support plate 22 and the second support plate 23. An arc-shaped notch is arranged on the top plate 24 to avoid the lens to be detected. The fixing tooling 3 is screwed on the top plate 24 and is located above the arc-shaped notch. The lens to be detected passes through the arc-shaped notch. The lengths of the first support plate 22 and the second support plate 23 are different to ensure that the fixing tooling 3 and the lens to be detected can be fixed between the first support plate 22 and the second support plate 23.

[0040] Preferably, a reinforcing plate is fixedly arranged between the first support plate 22 and the second support plate 23, and the reinforcing plate increases the overall strength of the support base 2.

[0041] Preferably, a plurality of positioning blocks 27 are uniformly and fixedly arranged on the top plate 24. The plurality of positioning blocks 27 are located around the arc-shaped notch. The plurality of positioning blocks 27 are all in contact with the fixing tooling 3. The arrangement of the positioning blocks 27 ensures that the position of the fixing tooling 3 screwed on the top plate 24 does not change and always aligns with the arc-shaped notch.

[0042] As an implementable manner, the top plate 24 is screwed and arranged on the first support plate 22 and the second support plate 23. A slot 25 and a plurality of micrometer heads 26 located on the side of the slot 25 are arranged on the top plate 24. There are gaps between the slot 25 and the upper surfaces of the first support plate 22 and the second support plate 23. The plurality of micrometer heads 26 are located on both sides of the arc-shaped notch. The tops of the plurality of micrometer heads 26 are all located above the top plate 24, and the bottoms of the plurality of micrometer heads 26 respectively abut against the first support plate 22 and the second support plate 23. The structure of the micrometer head 26 is prior art and will not be described in detail in this embodiment. The model of the micrometer head 26 adopted in this embodiment can be FAS106A. There are three micrometer heads 26 in this embodiment. The bottom of one micrometer head 26 abuts against the first support plate 22, and the bottoms of two micrometer heads 26 abut against the second support plate 23.

[0043] Generally, the micrometer head 26 includes a screw rod and a screw base. The screw base is arranged through and fixed on the top plate 24, and the screw rod passes through the screw base and a nut is arranged at the top of the screw rod. The tops of the plurality of micrometer heads 26 are all located above the top plate 24, that is, the nuts are located above the top plate 24. The bottoms of the plurality of micrometer heads 26 respectively abut against the first support plate 22 and the second support plate 23, that is, the bottoms of the plurality of screw rods respectively abut against the first support plate 22 and the second support plate 23. When the nut is rotated, the screw rod rotates relative to the screw base, and finally the screw rod moves up and down relative to the screw base, and the screw rod realizes elongation or shortening.

[0044] The levelness of the top plate 24 is adjusted to realize the adjustment of the levelness of the fixing tooling 3 and the lens to be detected. Specifically, the levelness of the top plate 24 is adjusted according to the length of the micrometer head 26. The screw rod is rotated according to the requirement, and the screw rod is elongated or shortened. Then the top plate 24 is screwed on the first support plate 22 and the second support plate 23 again. At this time, the levelness of the top plate 24 is determined (when the screw rod is shortened, the top plate 24 is closer to the horizontal; when the screw rod is elongated, the inclination angle of the top plate 24 is larger). The purpose of the slot 25 is to avoid position interference between the top plate 24 and the first support plate 22 and the second support plate 23 when adjusting the levelness of the top plate 24. The top plate 24 of this embodiment realizes the angle adjustment of the lens to be detected, and further facilitates the mask plate 4 to quickly align with the best focal plane of the lens to be detected.

[0045] As an implementable manner, the fixing tooling 3 includes a tooling cylinder 31 and a side plate 32 fixedly arranged on the tooling cylinder 31. The side plate 32 is screwed and arranged on the top plate 24, and the lens to be detected is fixedly arranged through the tooling cylinder 31 and the side plate 32. Specifically, the lens to be detected includes an infinity lens and a lens barrel. The lens to be detected is screwed and arranged on the top plate 24 through the lens barrel. Among them, a flange is arranged on the lens barrel, and the flange and the top plate 24 are screwed and fixed.

[0046] As an implementable embodiment, the detection device further includes an erection stand 9 and a plurality of anti-vibration air cushions 91. A plurality of first adjusting bolts 92 are screwed on the top of the erection stand 9. A first adjusting threaded hole is provided on the top of the erection stand 9. The first adjusting bolts 92 are screwed through the first adjusting threaded hole. A first locking nut is screwed on the first adjusting bolt 92 and the first locking nut contacts the erection stand 9. All the plurality of first adjusting bolts 92 contact the support platform 1; a plurality of second adjusting bolts 93 are screwed on one side of the bottom of the erection stand 9. A second adjusting threaded hole is provided on the bottom of the erection stand 9. The second adjusting bolts 93 are rotatable through the second adjusting threaded hole. A second locking nut is screwed on the second adjusting bolt 93 and the second locking nut contacts the erection stand 9. A support foot 94 is fixedly provided on each of the plurality of second adjusting bolts 93. Each of the plurality of support feet 94 contacts a part of the anti-vibration air cushions 91 respectively. The other side of the bottom of the erection stand 9 contacts the remaining anti-vibration air cushions 91. The height of the first adjusting bolt 92 can be adjusted and then locked by the first locking nut; the height of the second adjusting bolt 93 can be adjusted and then locked by the second locking nut. When the working ground is uneven, by adjusting the positions of the first adjusting bolt 92 and the second adjusting bolt 93, the support platform 1, that is, the detection device as a whole, can be kept level. The support feet 94 contact the anti-vibration air cushions 91, increasing the contact area and further ensuring that the support platform 1, that is, the detection device as a whole, is kept level.

[0047] Among them, the vibration isolation performance is also crucial for the detection device. In order to effectively isolate the influence of ground vibration on detection, the detection device is provided with a plurality of anti-vibration air cushions 91. The anti-vibration air cushions 91 can effectively absorb and disperse vibration energy, so that the support platform 1, that is, the detection device as a whole, can remain stable when being affected by external vibration.

[0048] The above-mentioned embodiments are only the preferred embodiments of the present invention, which are only used to explain the present invention and do not limit the scope of implementation of the present invention. For those skilled in the art of this technology, of course, other implementation manners can be easily made according to the technical content disclosed in this specification by means of replacement or change. Therefore, all changes and improvements made in the principles and process conditions of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. A lens testing device, comprising a support platform (1), a fixing mechanism and a testing mechanism, characterized in that: The fixing mechanism comprises a support seat (2) and a fixing tool (3), the support seat (2) being fixedly arranged on the support platform (1), the fixing tool (3) being detachably arranged on the support seat (2) and the lens to be detected being fixed on the fixing tool (3), the detection mechanism comprises a mask plate (4) and a camera (5), the mask plate (4) and the camera (5) being movably arranged on the support platform (1), the mask plate (4) and the camera (5) being arranged in sequence and located below the lens to be detected, and the center points of the lens to be detected, the mask plate (4) and the camera (5) being on the same vertical line.

2. The lens inspection device according to claim 1, characterized in that: The detection mechanism further comprises a Z-axis manual slide (6), an XY-axis manual slide (7) and a three-axis drive module (8); the Z-axis manual slide (6) is adjustably arranged on the support platform (1); a bracket (61) is fixedly arranged on the Z-axis movable plate of the Z-axis manual slide (6); the XY-axis manual slide (7) is fixedly arranged on the bracket (61); a lens plate (71) is fixedly arranged on the Y-axis movable plate of the XY-axis manual slide (7); and the mask plate (4) is adjustably arranged on the lens plate (71); the three-axis drive module (8) is fixedly arranged on the support platform (1); a mounting plate (81) is fixedly arranged on the Z-axis slider of the three-axis drive module (8); and the camera (5) is fixedly arranged on the mounting plate (81).

3. The lens inspection device according to claim 2, characterized in that: The detection mechanism further comprises a fixed plate (62), a first adjustment plate (63) and a second adjustment plate (64); the fixed plate (62) is fixedly arranged on the support platform (1); the first adjustment plate (63) is adjustably arranged on the fixed plate (62); the second adjustment plate (64) is adjustably arranged on the first adjustment plate (63); and the Z-axis manual slide (6) is fixedly arranged on the second adjustment plate (64).

4. The lens inspection device according to claim 3, characterized in that: The first adjusting plate (63) is provided with a first through hole, the first bolt (631) passes through the first through hole and is screwed on the fixing plate (62), the first adjusting plate (63) is threadedly provided with a first top screw (632), the first top screw (632) passes through the first adjusting plate (63) and the bottom of the first top screw (632) abuts against the fixing plate (62), and there are two first bolts (631) and two first top screws (632); the second adjusting plate (64) is provided with a second through hole, the second bolt (641) passes through the second through hole and is screwed on the first adjusting plate (63), the second adjusting plate (64) is threadedly provided with a second top screw (642), the second top screw (642) passes through the second adjusting plate (64) and the bottom of the second top screw (642) abuts against the first adjusting plate (63), and there are two second bolts (641) and two second top screws (642).

5. The lens inspection device according to claim 2, characterized in that: The lens plate (71) is provided with a first groove and a first opening which are in communication with each other, and the first opening is located below the first groove; a lens frame (72) is adjustably provided in the first groove; a second groove and a second opening which are in communication with each other are provided on the lens frame (72), and the second opening is located below the second groove; the mask plate (4) is placed in the second groove, and the mask plate (4) corresponds to the first opening and the second opening; a pressing plate (73) is screwed onto the lens frame (72), and the pressing plate (73) is located above the mask plate (4) and presses it into the second groove.

6. The lens inspection device according to claim 5, characterized in that: The lens frame (72) is provided with a strip hole having an arc, the third bolt (711) passes through the strip hole and is screwed to the first groove, the lens plate (71) is threaded with two third top screws (712) and the two third top screws (712) are arranged opposite to each other, the two third top screws (712) both pass through the lens plate (71), and the bottoms of the two third top screws (712) abut against the lens frame (72).

7. The lens inspection device according to claim 1, characterized in that: The support base (2) comprises a side plate (21), a first support plate (22), a second support plate (23) and a top plate (24); the side plate (21) is fixedly arranged on the support platform (1); the first support plate (22) and the second support plate (23) are fixedly arranged on the side plate (21); the top plate (24) is adjustably arranged on the first support plate (22) and the second support plate (23); an arc-shaped notch is arranged on the top plate (24); the fixing fixture (3) is screwed on the top plate (24) and is located above the arc-shaped notch; the lens to be inspected passes through the arc-shaped notch.

8. The lens inspection device according to claim 7, characterized in that: The top plate (24) is screwed onto the first support plate (22) and the second support plate (23); a slot (25) and a plurality of micrometer heads (26) located on the side of the slot (25) are provided on the top plate (24); there is a gap between the slot (25) and the upper surfaces of the first support plate (22) and the second support plate (23); the plurality of micrometer heads (26) are located on both sides of the arc-shaped notch; the tops of the plurality of micrometer heads (26) are located above the top plate (24); and the bottoms of the plurality of micrometer heads (26) are respectively abutted against the first support plate (22) and the second support plate (23).

9. The lens inspection device according to claim 7, characterized in that: The fixed tool (3) comprises a tool barrel (31) and a side plate (32) fixedly arranged on the tool barrel (31); the side plate (32) is screwed onto the top plate (24); and the lens to be inspected is fixedly arranged on the tool barrel (31) and the side plate (32).

10. The lens inspection device according to claim 1, characterized in that: The detection device also includes a standing frame (9) and a plurality of shockproof air cushions (91), wherein a plurality of first adjustment bolts (92) are screwed on the top of the standing frame (9), and the plurality of first adjustment bolts (92) are all in contact with the support platform (1); a plurality of second adjustment bolts (93) are screwed on one side of the bottom of the standing frame (9), and a support foot (94) is fixedly provided on the plurality of second adjustment bolts (93), and the plurality of support feet (94) are respectively in contact with a portion of the shockproof air cushions (91), and the other side of the bottom of the standing frame (9) is in contact with the remaining portion of the shockproof air cushions (91).

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