Lens detection jig

Abstract

The utility model discloses a lens detection jig which comprises a jig base, a detection correction mechanism, a lens adjusting mechanism and a detection controller, the detection correction mechanism and the lens adjusting mechanism are oppositely arranged on the jig base, and the detection controller is respectively in communication connection with a lens to be detected, the detection correction mechanism and the lens adjusting mechanism. Through the above mode, the lens detection jig can effectively improve the accuracy, stability and versatility of lens detection through mutual cooperation, meets the detection requirements of different lenses, can confirm whether the lenses meet the requirements in advance, and can be used for the installation and production of scanners after the lenses are confirmed to be qualified. And the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial scanner technology, and in particular to a lens inspection fixture. Background Technology

[0002] The lens is one of the most important components of a large-format industrial scanner. It is responsible for focusing light onto the photosensitive element to form a clear image, and the quality of the lens directly affects the scanner's imaging effect.

[0003] Upon receiving a new lens, it's impossible to determine if its specifications are up to standard. Furthermore, lacking specialized testing equipment, the lens must be directly mounted onto a scanner for testing. However, this method is extremely inefficient; if a lens is found to be defective, replacement requires even more time and is inconvenient to use. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A lens inspection fixture is provided, comprising: a fixture base, an inspection and calibration mechanism, and a lens adjustment mechanism, wherein the inspection and calibration mechanism and the lens adjustment mechanism are disposed opposite to each other on the fixture base.

[0006] The lens adjustment mechanism includes a telescopic drive mechanism, a movable base, a lens mount, a connecting shaft, a pitch adjustment mechanism, and a lens fine-tuning mechanism. The lens mount, used to mount the lens, is rotatably connected to the movable base via the connecting shaft, and the lens mount is provided with a slot for easy insertion and removal of the lens. The pitch adjustment mechanism is rotatably mounted on the movable base, and its upper part is movably connected to the front part of the lens mount to drive the lens mount to swing up and down, thereby adjusting the lens pitch angle. The lens fine-tuning mechanism passes through the lens mount and is movably connected to the lens to achieve fine-tuning of the lens back and forth within the lens mount. The telescopic drive mechanism drives the movable base to move back and forth on the fixture base to move closer to or further away from the detection and calibration mechanism, thereby performing lens detection.

[0007] The pitch adjustment mechanism includes an adjustment shaft, a lifting assembly, an adjustment gear, a guide connecting part, and a guide connecting groove. The adjustment shaft is disposed on the movable seat below the front end of the lens mount. The lifting assembly is threadedly connected to the adjustment shaft. The guide connecting part is disposed on the top of the lifting assembly. The guide connecting groove is disposed on the bottom surface of the lens mount and is movably connected to the guide connecting part, so that the guide connecting part slides in contact with the guide inclined surface on the guide connecting groove. The adjustment gear is disposed on the outer periphery of the lifting assembly, so that the lifting assembly moves up and down along the adjustment shaft under the action of the adjustment gear, thereby driving the lens mount to swing up and down around the connecting shaft through the guide connecting part and the guide connecting groove, thereby adjusting the pitch angle of the lens.

[0008] In a preferred embodiment of this utility model, the detection controller is communicatively connected to the lens to be detected, the detection and correction mechanism, and the lens adjustment mechanism.

[0009] In a preferred embodiment of this utility model, the detection and calibration mechanism includes a calibration housing, a calibration shaft, a calibration frame, a calibration adjustment part, and an adjustable light assembly. The calibration housing is disposed on the fixture base to provide a calibration environment. The calibration shaft and the adjustable light assembly are rotatably disposed within the calibration housing. The calibration frame is disposed on the calibration shaft for mounting calibration components that cooperate with lens detection. The calibration adjustment part is connected to the calibration shaft to drive the calibration frame to rotate via the calibration shaft. A detection port is provided on the calibration housing facing the detection and calibration mechanism.

[0010] In a preferred embodiment of the present invention, the two ends of the correction shaft are rotatably connected to the correction housing via bearings, with one end extending outward and connecting to the correction adjustment part.

[0011] In a preferred embodiment of this utility model, the calibration component is plugged into, glued to, or screwed to the calibration frame. The calibration component includes calibration paper, calibration plate, and test card. The calibration adjustment part includes a calibration handle and a rotary motor.

[0012] In a preferred embodiment of this utility model, the adjustable lighting assembly includes a lamp holder, a connecting shaft, a rotating limiting groove, and a limiting locking screw. Both ends of the lamp holder are rotatably connected to the calibration housing via the connecting shaft for mounting the lighting fixture. The rotating limiting groove is provided on the side of the calibration housing. One end of the limiting locking screw passes through the rotating limiting groove and abuts against or is threadedly connected to the lamp holder to lock or unlock the position of the lamp holder.

[0013] In a preferred embodiment of this utility model, the lens mount is a clamp-type structure, including a clamping sleeve, an adjusting gap, a locking seat, and a locking bolt. A set of connecting shafts are symmetrically arranged on the outer periphery of the rear end of the hollow clamping sleeve. The adjusting gap is axially disposed through the outer periphery of the top of the clamping sleeve. Several sets of locking seats are sequentially disposed on the clamping sleeve on both sides of the adjusting gap. Each set of locking seats corresponds to one locking bolt. The locking bolt is threadedly connected to the locking seat to clamp or release the lens to be tested.

[0014] In a preferred embodiment of this utility model, an adjusting screw is rotatably disposed on the movable base, and the adjusting screw meshes with the adjusting gear. One end of the adjusting screw is connected to a pitch adjusting motor, and the pitch adjusting motor drives the adjusting screw to rotate, thereby driving the adjusting gear to rotate, thereby realizing automatic adjustment of the pitch angle.

[0015] In a preferred embodiment of this utility model, the lens mount is provided with a pitch adjustment limiting plate, and the pitch adjustment limiting plate is provided with a limiting bolt. The lower part of the limiting bolt passes through the through hole on the movable seat and is connected to the limiting nut to limit the extreme value of the lens pitch.

[0016] In a preferred embodiment of this utility model, the lens fine-tuning mechanism includes a fine-tuning rod, a fine-tuning head, and a fine-tuning connecting hole. The fine-tuning connecting hole is disposed on the lens mount, and the fine-tuning head is eccentrically disposed at the lower end of the fine-tuning rod. The fine-tuning rod is movably connected to the fine-tuning connecting hole, and the fine-tuning head passes through the fine-tuning connecting hole and extends into a fine-tuning limiting groove radially disposed on the outer edge of the lens. By rotating the fine-tuning rod, the fine-tuning head is driven to rotate, thereby completing the fine-tuning of the lens's front and rear positions within the lens mount under the action of the fine-tuning head and the fine-tuning limiting groove. The fine-tuning rod is provided with an adjustment handle.

[0017] The beneficial effects of this utility model are: through mutual cooperation, the accuracy, stability and versatility of lens inspection can be effectively improved, meeting the inspection needs of different lenses. Moreover, it can confirm in advance whether the lens meets the requirements, and only after confirming that it is qualified can it be used for scanner installation and production, which greatly improves production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a lens inspection fixture according to this utility model;

[0020] Figure 2 This is a schematic diagram of a preferred embodiment of a lens inspection fixture according to the present invention;

[0021] Figure 3 This is a schematic diagram of the lens adjustment mechanism structure of a preferred embodiment of a lens testing fixture according to this utility model;

[0022] Figure 4 This is a cross-sectional view of the lens adjustment mechanism of a preferred embodiment of a lens inspection fixture according to this utility model;

[0023] Figure 5 This is a schematic diagram of the tilt adjustment mechanism of a preferred embodiment of a lens inspection fixture according to this utility model;

[0024] Figure 6 This is a schematic diagram of a preferred embodiment of a lens inspection fixture of the present invention, showing the structure of a fine-tuning limiting groove. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figure 1-6 The embodiments of this utility model include:

[0027] A lens inspection fixture includes: a fixture base 1, an inspection and calibration mechanism 2, a lens adjustment mechanism 3, and an inspection controller 4. The inspection and calibration mechanism and the lens adjustment mechanism are disposed opposite to each other on the fixture base, and the inspection controller is communicatively connected to the lens to be inspected, the inspection and calibration mechanism, and the lens adjustment mechanism.

[0028] The testing and calibration mechanism 2 includes a calibration housing 21, a calibration shaft 22, a calibration frame 23, a calibration component 24, a calibration adjustment unit 25, and an adjustable lighting assembly 26.

[0029] The calibration housing is mounted on the fixture base to provide a calibration environment. A calibration shaft is rotatably mounted inside the calibration housing. A calibration frame is mounted on the calibration shaft for mounting calibration components used in lens inspection. A calibration adjustment unit is connected to one end of the calibration shaft, which drives the calibration frame to rotate, allowing for switching between different calibration components according to actual inspection needs. An adjustable lighting assembly is rotatably mounted on the calibration housing inside the calibration shaft to provide illumination for lens inspection.

[0030] In a further preferred embodiment, a detection port 27 is provided on the calibration housing facing the detection and calibration mechanism.

[0031] More preferably, both ends of the calibration shaft are rotatably connected to the calibration housing via bearings, with one end extending outward and connecting to the calibration adjustment section.

[0032] In a further preferred embodiment, the calibration components are connected to the calibration frame by means of insertion, bonding, screw connection, etc., and the calibration components include calibration paper, calibration plate, test card, etc.

[0033] More preferably, the cross-section of the calibration frame can be triangular, rectangular, or other polygonal.

[0034] More preferably, the calibration adjustment unit includes a calibration handle, a rotary motor, or other mechanism that can drive the calibration shaft to rotate.

[0035] More preferably, the adjustable lighting assembly 26 includes a lamp holder 261, a lamp 262, a connecting shaft 263, a rotation limiting groove 264, and a limiting locking screw 265. The two ends of the lamp holder are rotatably connected to the calibration housing via the connecting shaft for mounting the lamp. The calibration housing has a rotation limiting groove on its side. One end of the limiting locking screw passes through the rotation limiting groove and abuts against or is threaded to the lamp holder to lock or unlock the position of the lamp holder.

[0036] The lens adjustment mechanism 3 includes a telescopic drive mechanism 31, a moving base 32, a lens mount 33, a connecting shaft 34, a pitch adjustment mechanism 35, and a lens fine-tuning mechanism 36.

[0037] The rear ends of the lens mount for mounting lens 5 are rotatably connected to the movable base via connecting shafts on both sides. The lens mount is provided with slots 37 for easy insertion and removal of the lens. The pitch adjustment mechanism is rotatably mounted on the movable base, and its upper part is movably connected to the front part of the lens mount to drive the lens mount to swing up and down around the connecting shafts, thereby adjusting the lens pitch angle. The lens fine-tuning mechanism passes through the lens mount and is movably connected to the lens to achieve fine-tuning of the lens within the lens mount. The telescopic drive mechanism drives the movable base to move back and forth on the fixture base to move closer to or further away from the detection and calibration mechanism, thereby performing lens detection.

[0038] More preferably, the lens mount can be a clamp (clamping) type structure, which includes a clamping seat 331, an adjusting gap 332, a locking seat 333, and a locking bolt 334. A set of connecting shafts are symmetrically arranged on the outer periphery of the rear end of the hollow clamping seat. The adjusting gap is axially arranged through the outer periphery of the top of the clamping seat. Several sets of locking seats are sequentially arranged on the clamping seat on both sides of the adjusting gap. Each set of locking seats corresponds to a locking bolt. The locking bolt is threadedly connected to the locking seat to change the size of the adjusting gap, thereby clamping or loosening the lens to be tested through the clamping seat.

[0039] In a further preferred embodiment, the telescopic drive mechanism includes a motor, a lead screw, and a linear guide rail. The lead screw and the linear guide rail are mounted on the fixture base. The movable seat is connected to both the lead screw and the linear guide rail. The motor is connected to the lead screw to drive the movable seat to telescopically move back and forth along the linear guide rail. The linear guide rail is equipped with a locking device.

[0040] The pitch adjustment mechanism 35 includes an adjustment shaft 351, a lifting assembly 352, an adjustment gear 353, a guide connection part 354, and a guide connection groove 359. The adjustment shaft is vertically mounted on a movable seat below the front end of the lens mount. The lifting assembly is threadedly connected to the adjustment shaft. The guide connection part is located on the top of the lifting assembly, and the guide connection groove is located on the bottom surface of the lens mount and is movably connected to the guide connection part, so that the guide connection part slides in contact with the guide inclined surface on the guide connection groove to achieve a precise connection between the lens mount and the pitch adjustment mechanism, thereby ensuring the accuracy and efficiency of the pitch angle adjustment. The adjustment gear is sleeved on the outer periphery of the lifting assembly, so that the lifting assembly can move up and down along the adjustment shaft under the action of the adjustment gear, thereby driving the lens mount to swing up and down around the connecting shaft through the guide connection part and the guide connection groove, thereby adjusting the pitch angle of the lens.

[0041] Further preferably, the cross-section of the guide connection part is a trapezoidal structure.

[0042] In a further preferred embodiment, an adjusting screw 355 is rotatably mounted on the movable base, and the adjusting screw meshes with the outer periphery of the adjusting gear. One end of the adjusting screw is connected to a pitch adjusting motor 356, which drives the adjusting screw to rotate, thereby driving the adjusting gear to rotate and thus realizing automatic adjustment of the pitch angle.

[0043] In a further preferred embodiment, the lens mount is provided with a pitch adjustment limit plate 357, and the pitch adjustment limit plate is provided with a limit bolt 358. The lower part of the limit bolt passes through the through hole on the movable seat and is connected to the limit nut to limit the extreme value of the lens pitch and prevent damage to the lens and fixture due to misoperation.

[0044] The lens fine-tuning mechanism 36 includes a fine-tuning rod 361, a fine-tuning head 362, a fine-tuning limiting groove 363, and a fine-tuning connecting hole 364. The fine-tuning connecting hole is disposed on the lens mount, the fine-tuning limiting groove is radially disposed on the outer edge of the lens, and the fine-tuning limiting groove is connected to the fine-tuning connecting hole. The fine-tuning head is eccentrically disposed at the lower end of the fine-tuning rod, the fine-tuning rod is movably connected to the fine-tuning connecting hole, and the fine-tuning head passes through the fine-tuning connecting hole and extends into the fine-tuning limiting groove. By rotating the fine-tuning rod, the fine-tuning head is driven to rotate, thereby allowing the lens to be finely adjusted in the left and right inner position under the action of the fine-tuning head and the fine-tuning limiting groove.

[0045] In a further preferred embodiment, the fine-tuning lever is equipped with an adjustment handle 365.

[0046] During testing, first insert the lens to be tested into the lens mount from front to back. Use the telescopic drive mechanism to adjust the front-to-back position of the moving seat, and use the lens fine-tuning mechanism to fine-tune the front-to-back position of the lens. After the front-to-back position is adjusted, tighten the locking bolt to lock the clamping sleeve and complete the horizontal position locking of the lens. Use the tilt adjustment mechanism to adjust the tilt angle of the lens to align it with the test port. Rotate the calibration adjustment part according to the test requirements to align the corresponding calibration piece with the test port, adjust the angle of the lamp and turn on the lamp. Finally, use the controller to control the lens to perform the test.

[0047] The beneficial effects of this lens inspection fixture are: through mutual cooperation, the accuracy, stability and versatility of lens inspection can be effectively improved, meeting the inspection needs of different lenses. Moreover, it can confirm in advance whether the lens meets the requirements, and only after confirming that it is qualified can it be used for scanner installation and production, which greatly improves production efficiency.

[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lens inspection fixture, characterized in that, include: The fixture base, the detection and calibration mechanism, and the lens adjustment mechanism are arranged opposite to each other on the fixture base. The lens adjustment mechanism includes a telescopic drive mechanism, a movable base, a lens mount, a connecting shaft, a pitch adjustment mechanism, and a lens fine-tuning mechanism. The lens mount, used to mount the lens, is rotatably connected to the movable base via the connecting shaft, and the lens mount is provided with a slot for easy insertion and removal of the lens. The pitch adjustment mechanism is rotatably mounted on the movable base, and its upper part is movably connected to the front part of the lens mount to drive the lens mount to swing up and down, thereby adjusting the lens pitch angle. The lens fine-tuning mechanism passes through the lens mount and is movably connected to the lens to achieve fine-tuning of the lens back and forth within the lens mount. The telescopic drive mechanism drives the movable base to move back and forth on the fixture base to move closer to or further away from the detection and calibration mechanism, thereby performing lens detection. The pitch adjustment mechanism includes an adjustment shaft, a lifting assembly, an adjustment gear, a guide connecting part, and a guide connecting groove. The adjustment shaft is disposed on the movable seat below the front end of the lens mount. The lifting assembly is threadedly connected to the adjustment shaft. The guide connecting part is disposed on the top of the lifting assembly. The guide connecting groove is disposed on the bottom surface of the lens mount and is movably connected to the guide connecting part, so that the guide connecting part slides in contact with the guide inclined surface on the guide connecting groove. The adjustment gear is disposed on the outer periphery of the lifting assembly, so that the lifting assembly moves up and down along the adjustment shaft under the action of the adjustment gear, thereby driving the lens mount to swing up and down around the connecting shaft through the guide connecting part and the guide connecting groove, thereby adjusting the pitch angle of the lens.

2. The lens inspection fixture according to claim 1, characterized in that, The detection controller is communicatively connected to the lens to be tested, the detection and correction mechanism, and the lens adjustment mechanism.

3. The lens inspection fixture according to claim 1, characterized in that, The detection and calibration mechanism includes a calibration housing, a calibration shaft, a calibration frame, a calibration adjustment unit, and an adjustable lighting assembly. The calibration housing is disposed on the fixture base to provide a calibration environment. The calibration shaft and the adjustable lighting assembly are rotatably disposed within the calibration housing. The calibration frame is disposed on the calibration shaft for mounting calibration components that cooperate with lens detection. The calibration adjustment unit is connected to the calibration shaft to drive the calibration frame to rotate via the calibration shaft. A detection port is provided on the calibration housing facing the detection and calibration mechanism.

4. A lens inspection fixture according to claim 3, characterized in that, The two ends of the calibration shaft are rotatably connected to the calibration housing via bearings, with one end extending outward and connecting to the calibration adjustment part.

5. A lens inspection fixture according to claim 3, characterized in that, The calibration components are connected to the calibration frame by insertion, bonding, or screws. The calibration components include calibration paper, calibration plate, and test card. The calibration adjustment part includes a calibration handle and a rotary motor.

6. A lens inspection fixture according to claim 3, characterized in that, The adjustable lighting assembly includes a lamp holder, a connecting shaft, a rotating limiting groove, and a limiting locking screw. Both ends of the lamp holder are rotatably connected to the calibration housing via the connecting shaft for mounting the lighting fixture. The rotating limiting groove is provided on the side of the calibration housing. One end of the limiting locking screw passes through the rotating limiting groove and abuts against or is threadedly connected to the lamp holder to lock or unlock the position of the lamp holder.

7. A lens inspection fixture according to claim 1, characterized in that, The lens mount is a clamp-type structure, including a clamping sleeve, an adjusting gap, a locking seat, and a locking bolt. A set of connecting shafts are symmetrically arranged on the outer periphery of the rear end of the hollow clamping sleeve. The adjusting gap is axially inserted through the outer periphery of the top of the clamping sleeve. Several sets of locking seats are sequentially arranged on the clamping sleeve on both sides of the adjusting gap. Each set of locking seats corresponds to one locking bolt. The locking bolt is threadedly connected to the locking seat to clamp or release the lens to be tested.

8. A lens inspection fixture according to claim 1, characterized in that, An adjusting screw is rotatably mounted on the movable base, and the adjusting screw meshes with the adjusting gear. One end of the adjusting screw is connected to a pitch adjusting motor, which drives the adjusting screw to rotate, thereby driving the adjusting gear to rotate, thus realizing automatic adjustment of the pitch angle.

9. A lens inspection fixture according to claim 1, characterized in that, The lens mount is provided with a pitch adjustment limit plate, and the pitch adjustment limit plate is provided with a limit bolt. The lower part of the limit bolt passes through the through hole on the movable seat and is connected to the limit nut to limit the extreme value of the lens pitch.

10. A lens inspection fixture according to claim 1, characterized in that, The lens fine-tuning mechanism includes a fine-tuning rod, a fine-tuning head, and a fine-tuning connecting hole. The fine-tuning connecting hole is disposed on the lens mount. The fine-tuning head is eccentrically disposed at the lower end of the fine-tuning rod. The fine-tuning rod is movably connected to the fine-tuning connecting hole, and the fine-tuning head passes through the fine-tuning connecting hole and extends into a fine-tuning limiting groove radially disposed on the outer edge of the lens. By rotating the fine-tuning rod, the fine-tuning head is driven to rotate, thereby completing the fine-tuning of the lens's front and rear positions within the lens mount under the action of the fine-tuning head and the fine-tuning limiting groove. The fine-tuning rod is provided with an adjustment handle.

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