Lens detection jig

Abstract

The invention 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 in communication connection with a to-be-detected lens, the detection correction mechanism and the lens adjusting mechanism. By means of the mode, the lens detection jig can effectively improve the accuracy, stability and universality of lens detection through mutual cooperation, meets the detection requirements of different lenses, can confirm whether the lenses meet the requirements or not in advance, and is used for installation and production of scanners after the lenses are confirmed to be qualified, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial scanners, and particularly to a lens detection fixture. Background Art

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

[0003] After receiving a new lens, it is impossible to determine whether the new lens parameter specifications are qualified. Moreover, due to the lack of a professional detection fixture, the lens needs to be directly installed on the scanner machine for testing. However, this testing method is very inefficient. Once it is found that the lens is unqualified, it takes more time to replace and install it again, and it is inconvenient to use. Summary of the Invention

[0004] To solve the above technical problems, one technical solution adopted by the present invention is: Provide a lens detection fixture, which includes: a fixture base, a detection and calibration mechanism, and a lens adjustment mechanism. The detection and calibration mechanism and the lens adjustment mechanism are oppositely arranged on the fixture base. The detection and calibration mechanism includes a calibration housing, a calibration rotating shaft, a calibration frame, a calibration adjustment part, and an adjustable lighting component. The calibration housing is arranged on the fixture base to provide a calibration environment. The calibration rotating shaft and the adjustable lighting component are rotatably arranged in the calibration housing. The calibration frame is arranged on the calibration rotating shaft to be used for installing and mating with calibration parts for lens detection. The calibration adjustment part is connected to the calibration rotating shaft to drive the calibration frame to rotate through the calibration rotating shaft. The lens adjustment mechanism includes a telescopic driving mechanism, a moving seat, a lens seat, a connecting rotating shaft, a pitching adjustment mechanism, and a lens fine adjustment mechanism. The lens seat for installing the lens is rotatably connected to the moving seat through the connecting rotating shaft, and a groove for facilitating the insertion and extraction of the lens is arranged on the lens seat. The pitching adjustment mechanism is rotatably arranged on the moving seat, and its upper part is movably connected to the front part of the lens seat to drive the lens seat to swing up and down, thereby realizing the adjustment of the pitching angle of the lens. The lens fine adjustment mechanism passes through the lens seat and is movably connected to the lens to realize the front and back fine adjustment of the lens in the lens seat. The telescopic driving mechanism drives the moving seat to move back and forth on the fixture base to approach or move away from the detection and calibration mechanism, so as to perform the detection of the lens. The pitch adjustment mechanism includes an adjustment shaft, a jacking kit, an adjustment gear, a guiding connection part, and a guiding connection groove. The adjustment shaft is arranged on the moving seat below the front end of the lens holder. The jacking kit is threadedly connected to the adjustment shaft. The guiding connection part is arranged on the top of the jacking kit. The guiding connection groove is arranged on the bottom surface of the lens holder and is movably connected to the guiding connection part, such that the guiding connection part is in sliding contact with the guiding inclined surface on the guiding connection groove. The adjustment gear is arranged on the outer periphery of the jacking kit, such that the jacking kit moves up and down along the adjustment shaft under the action of the adjustment gear, and drives the lens holder to swing up and down around the connection rotating shaft through the guiding connection part and the guiding connection groove, thereby adjusting the pitch angle of the lens. The lens fine adjustment mechanism includes a fine adjustment rod, a fine adjustment head, and a fine adjustment connection hole. The fine adjustment connection hole is arranged on the lens holder. The fine adjustment head is eccentrically arranged at the lower end of the fine adjustment rod. The fine adjustment rod is movably connected to the fine adjustment connection hole, and the fine adjustment head passes through the fine adjustment connection hole and extends into a fine adjustment limiting groove radially arranged on the outer edge of the lens. By rotating the fine adjustment rod, the fine adjustment head is driven to rotate, thereby completing the fine adjustment of the front and rear positions of the lens in the lens holder under the action of the fine adjustment head and the fine adjustment limiting groove.

[0005] In a preferred embodiment of the present invention, the detection controller is respectively in communication connection with the lens to be detected, the detection and correction mechanism, and the lens adjustment mechanism.

[0006] In a preferred embodiment of the present invention, a detection port is arranged on the correction housing facing the detection and correction mechanism.

[0007] In a preferred embodiment of the present invention, both ends of the correction rotating shaft are respectively rotatably connected to the correction housing through bearings, and one end extends outwards and is connected to the correction adjustment part.

[0008] In a preferred embodiment of the present invention, the correction piece is plugged, bonded, or screwed to the correction frame. The correction piece includes a correction paper, a correction plate, and a test card. The correction adjustment part includes a correction handle and a rotating motor.

[0009] In a preferred embodiment of the present invention, the adjustable lighting assembly includes a lamp holder, a connecting shaft, a rotation limiting groove, and a limit locking screw. Both ends of the lamp holder are respectively rotatably connected to the correction housing through the connecting shaft for installing lamps. The rotation limiting groove is arranged on the side of the correction housing. One end of the limit locking screw passes through the rotation limiting groove and abuts against or is threadedly connected to the lamp holder to lock or unlock the position of the lamp holder.

[0010] In a preferred embodiment of the present invention, the lens holder has a clamp structure, including a clamping seat sleeve, an adjustment gap, a locking seat, and a locking bolt. A set of connecting rotating shafts are symmetrically arranged on the outer periphery of the rear end of the hollow clamping seat sleeve. The adjustment gap axially penetrates through the outer peripheral wall at the top of the clamping seat sleeve. Several sets of locking seats are sequentially arranged on the clamping seat sleeve on both sides of the adjustment gap. One set of locking seats corresponds to one locking bolt, and the locking bolt is threadedly connected to the locking seat to clamp or loosen the lens to be detected by the clamping seat sleeve.

[0011] In a preferred embodiment of the present invention, an adjustment screw is rotatably arranged on the moving seat, and the adjustment screw meshes with the adjustment gear. One end of the adjustment screw is connected to a pitching adjustment motor, and the pitching adjustment motor drives the adjustment screw to rotate to drive the adjustment gear to rotate, thereby realizing the automatic adjustment of the pitching angle.

[0012] In a preferred embodiment of the present invention, a pitching adjustment limiting piece is arranged on the lens holder, and a limiting bolt is arranged on the pitching adjustment limiting piece. The lower part of the limiting bolt passes through the through hole on the moving seat and is connected to a limiting nut to limit the extreme values of the pitching of the lens.

[0013] In a preferred embodiment of the present invention, an adjustment handle is arranged on the fine adjustment rod.

[0014] The beneficial effects of the present invention are as follows: Through the mutual cooperation, the accuracy, stability, and versatility of lens detection can be effectively improved, meeting the detection requirements of different lenses. Moreover, it can confirm in advance whether the lens meets the requirements and then be used for the installation and production of the scanner after confirmation, greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where: Figure 1 is the overall structural schematic diagram of a preferred embodiment of a lens detection jig of the present invention; Figure 2 is the structural schematic diagram of a preferred embodiment of a lens detection jig of the present invention; Figure 3 is the structural schematic diagram of the lens adjustment mechanism of a preferred embodiment of a lens detection jig of the present invention; Figure 4It is a schematic cross-sectional structure diagram of a lens adjustment mechanism in a preferred embodiment of a lens detection jig of the present invention; Figure 5 It is a schematic structural diagram of a pitch adjustment mechanism in a preferred embodiment of a lens detection jig of the present invention; Figure 6 It is a schematic structural diagram of a fine adjustment limit groove in a preferred embodiment of a lens detection jig of the present invention. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0017] Please refer to Figure 1-6 , the embodiments of the present invention include: A lens detection jig, whose structure includes: a jig base 1, a detection and correction mechanism 2, a lens adjustment mechanism 3, and a detection controller 4. The detection and correction mechanism and the lens adjustment mechanism are oppositely arranged on the jig base, and the detection controller is communicatively connected to the lens to be detected, the detection and correction mechanism, and the lens adjustment mechanism respectively.

[0018] The detection and correction mechanism 2 includes a correction housing 21, a correction rotating shaft 22, a correction frame 23, a correction member 24, a correction adjustment part 25, and an adjustable lighting component 26.

[0019] The correction housing covers the jig base to provide a correction environment. The correction rotating shaft is rotatably arranged in the correction housing. The correction frame is arranged on the correction rotating shaft for installing a correction member used for cooperating with lens detection. The correction adjustment part is connected to one end of the correction rotating shaft to drive the correction frame to rotate through the correction rotating shaft, so as to switch and use different correction members according to actual detection requirements. The adjustable lighting component is rotatably arranged on the correction housing inside the correction rotating shaft to provide a certain amount of lighting for convenient lens detection.

[0020] Further preferably, a detection port 27 is provided on the correction housing facing the detection and correction mechanism.

[0021] Further preferably, both ends of the correction rotating shaft are rotatably linked to the correction housing through bearings, and one end extends outward and is connected to the correction adjustment part.

[0022] Further preferably, the correction member is connected to the correction frame by means of plugging, bonding, screw connection, etc. The correction member includes correction paper, correction plate, test card, etc.

[0023] Further preferably, the cross-section of the calibration frame can be triangular, rectangular or other polygons.

[0024] Further preferably, the calibration adjustment part includes a calibration handle, a rotary motor and other mechanisms that can drive the calibration rotating shaft to rotate.

[0025] Further preferably, the adjustable lighting assembly 26 includes a lamp holder 261, a lamp 262, a connecting shaft 263, a rotary limit groove 264, and a limit locking screw 265. The two ends of the lamp holder are respectively rotatably connected to the calibration housing through the connecting shaft for installing the lamp. A rotary limit groove is provided on the side of the calibration housing. One end of the limit locking screw passes through the rotary limit groove and abuts against or is threadedly connected to the lamp holder to lock or unlock the position of the lamp holder.

[0026] The lens adjustment mechanism 3 includes a telescopic drive mechanism 31, a moving seat 32, a lens holder 33, a connecting rotating shaft 34, a pitching adjustment mechanism 35, and a lens fine adjustment mechanism 36.

[0027] The two sides of the rear end of the lens holder for installing the lens 5 are respectively rotatably connected to the moving seat through the connecting rotating shaft, and a groove body 37 convenient for inserting and removing the lens is provided on the lens holder. The pitching adjustment mechanism is rotatably arranged on the moving seat, and its upper part is movably connected to the front part of the lens holder to drive the lens holder to swing up and down around the connecting rotating shaft, so as to realize the adjustment of the pitching angle of the lens. The lens fine adjustment mechanism passes through the lens holder and is movably connected to the lens to realize the front and back fine adjustment of the lens in the lens holder. The telescopic drive mechanism drives the moving seat to move back and forth on the jig base to approach or move away from the detection and calibration mechanism, so as to detect the lens.

[0028] Further preferably, the lens holder can be a clamp (clamping) type structure, and its structure includes a clamping seat sleeve 331, an adjustment gap 332, a locking seat 333, and a locking bolt 334. A group of connecting rotating shafts are symmetrically arranged on the outer periphery of the rear end of the hollow clamping seat sleeve. The adjustment gap axially penetrates through the outer peripheral wall at the top of the clamping seat sleeve. Several groups of locking seats are sequentially arranged on the clamping seat sleeve on both sides of the adjustment gap. One group of locking seats corresponds to one locking bolt, and the locking bolt is threadedly connected to the locking seat to change the size of the adjustment gap, so as to clamp or loosen the lens to be detected through the clamping seat sleeve.

[0029] Further preferably, the telescopic drive mechanism includes a motor, a lead screw and a linear guide rail. The lead screw and the linear guide rail are arranged on the jig base. The moving seat is respectively connected to the lead screw and the linear guide rail. The motor is connected to the lead screw to drive the lead screw to drive the moving seat to move back and forth along the linear guide rail. Among them, the linear guide rail adopts a guide rail with a locking device.

[0030] The pitch adjustment mechanism 35 includes an adjustment shaft 351, a jacking kit 352, an adjustment gear 353, a guiding connection part 354, and a guiding connection groove 359. The adjustment shaft is vertically arranged on the moving seat below the front end of the lens holder. The jacking kit is threadedly connected to the adjustment shaft. The guiding connection part is arranged on the top of the jacking kit. The guiding connection groove is arranged on the bottom surface of the lens holder and is movably connected to the guiding connection part, so that the guiding connection part is in sliding contact with the guiding inclined surface on the guiding connection groove, to achieve the precise connection between the lens holder and the pitch adjustment mechanism, thereby ensuring the accuracy and efficiency of pitch angle adjustment. The adjustment gear is sleeved on the outer periphery of the jacking kit, so that the jacking kit can move up and down along the adjustment shaft under the action of the adjustment gear, to drive the lens holder to swing up and down around the connection rotating shaft through the guiding connection part and the guiding connection groove, thereby adjusting the pitch angle of the lens.

[0031] Further preferably, the cross-section of the guiding connection part is a trapezoidal structure.

[0032] Further preferably, an adjustment screw 355 is rotatably arranged on the moving seat, and the adjustment screw meshes with the outer periphery of the adjustment gear. One end of the adjustment screw is connected with a pitch adjustment motor 356. The pitch adjustment motor drives the adjustment screw to rotate, so as to drive the adjustment gear to rotate, thereby realizing the automatic adjustment of the pitch angle.

[0033] Further preferably, a pitch adjustment limit piece 357 is arranged on the lens holder. A limit bolt 358 is arranged on the pitch adjustment limit piece. The lower part of the limit bolt passes through the through hole on the moving seat and is connected to the limit nut, to limit the extreme values of the pitch of the lens, and prevent the lens and the fixture from being damaged due to misoperation.

[0034] The lens fine adjustment mechanism 36 includes a fine adjustment rod 361, a fine adjustment head 362, a fine adjustment limit groove 363, and a fine adjustment connection hole 364. The fine adjustment connection hole is arranged on the lens holder. The fine adjustment limit groove is radially arranged on the outer edge of the lens, and the fine adjustment limit groove communicates with the fine adjustment connection hole. The fine adjustment head is eccentrically arranged at the lower end of the fine adjustment rod. The fine adjustment rod is movably connected to the fine adjustment connection hole, and the fine adjustment head passes through the fine adjustment connection hole and extends into the fine adjustment limit groove. By rotating the fine adjustment rod to drive the fine adjustment head to rotate, the lens can be finely adjusted in the front and back positions inside the lens under the action of the fine adjustment head and the fine adjustment limit groove.

[0035] Further preferably, an adjustment handle 365 is arranged on the fine adjustment rod.

[0036] When conducting a test, first insert the lens to be detected into the lens mount from front to back. Use the telescopic drive mechanism to adjust the front and back positions of the moving seat, and use the lens fine-tuning mechanism to finely adjust the front and back positions of the lens. After the front and back positions are adjusted, lock the clamping seat sleeve with the locking bolt to complete the locking of the horizontal position of the lens. Use the pitch adjustment mechanism to adjust the pitch angle of the lens so that it is aligned with the detection port. Rotate the calibration adjustment part according to the test requirements to align the corresponding calibration part with the detection port, adjust the angle of the lamp and turn on the lamp. Finally, control the lens with the controller to conduct the detection.

[0037] The beneficial effect of a lens detection fixture of the present invention is that through the mutual cooperation, it can effectively improve the accuracy, stability and versatility of lens detection, meet the detection requirements of different lenses, and can confirm in advance whether the lens meets the requirements. After confirmation of compliance, it is used for the installation and production of the scanner, greatly improving the production efficiency.

[0038] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A lens inspection jig, characterized in that: include: A fixture base, a detection and correction mechanism, and a lens adjustment mechanism, wherein the detection and correction mechanism and the lens adjustment mechanism are arranged on the fixture base relative to each other. The detection and correction mechanism includes a correction shell, a correction shaft, a correction frame, a correction adjustment part, and an adjustable light assembly. The correction shell is arranged on the fixture base to provide a correction environment. The correction shaft and the adjustable light assembly can be rotatably arranged in the correction shell. The correction frame is arranged on the correction shaft to install a correction piece that cooperates with lens detection. The correction adjustment part is connected to the correction shaft to drive the correction frame to rotate through the correction shaft. The lens adjustment mechanism includes a telescopic driving mechanism, a movable seat, a lens seat, a connecting shaft, a pitch adjustment mechanism and a lens fine-tuning mechanism. The lens seat for mounting the lens is rotatably connected to the movable seat via the connecting shaft, and a slot body for convenient insertion and removal of the lens is provided on the lens seat. The pitch adjustment mechanism can be rotatably arranged on the movable seat, and its upper part is movably connected to the front part of the lens seat to drive the lens seat to swing up and down, thereby realizing adjustment of the lens pitch angle. The lens fine-tuning mechanism passes through the lens seat and is movably connected to the lens to realize front and back fine-tuning of the lens in the lens seat. The telescopic driving mechanism drives the movable seat to move back and forth on the jig base to approach or move away from the detection and correction mechanism, thereby performing lens detection. The pitch adjustment mechanism comprises an adjustment shaft, a lifting kit, an adjustment gear, a guide connection part, and a guide connection groove. The adjustment shaft is arranged on the movable seat below the front end of the lens seat. The lifting kit is threadedly connected to the adjustment shaft. The guide connection part is arranged on the top of the lifting kit. The guide connection groove is arranged on the bottom surface of the lens seat and is movably connected with the guide connection part, so that the guide connection part is in sliding contact with the guide inclined surface on the guide connection groove. The adjustment gear is arranged on the outer periphery of the lifting kit, so that the lifting kit moves up and down along the adjustment shaft under the action of the adjustment gear, so as to drive the lens seat 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; The lens fine-tuning mechanism includes a fine-tuning rod, a fine-tuning head and a fine-tuning connecting hole, wherein the fine-tuning connecting hole is arranged on the lens mount, and the fine-tuning head is eccentrically arranged 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 to a fine-tuning limit groove radially arranged on the outer edge of the lens. The fine-tuning head is driven to rotate by rotating the fine-tuning rod, thereby completing the fine-tuning of the front and rear position of the lens in the lens mount under the action of the fine-tuning head and the fine-tuning limit groove.

2. A lens inspection jig according to claim 1, characterized in that: The detection controller is respectively connected to the lens to be detected, the detection correction mechanism and the lens adjustment mechanism for communication.

3. The lens inspection jig according to claim 1, characterized in that: A detection port is arranged on the correction housing facing the detection and correction mechanism.

4. The lens inspection jig according to claim 1, characterized in that: The two ends of the correction shaft are rotatably connected to the correction housing through bearings, and one end thereof extends outwardly and is connected to the correction adjustment part.

5. The lens inspection jig according to claim 1, characterized in that: The correction piece is connected to the correction frame by plugging, bonding or screwing. The correction piece includes correction paper, a correction plate and a test card. The correction adjustment part includes a correction handle and a rotating motor.

6. The lens inspection jig according to claim 1, characterized in that: The adjustable lighting assembly includes a lamp holder, a connecting shaft, a rotation limit groove, and a limit locking screw. The two ends of the lamp holder are rotatably connected to the correction shell through the connecting shaft for installing the lamp. The rotation limit groove is provided on the side of the correction shell. One end of the limit locking screw passes through the rotation limit groove and abuts against or is threadedly connected to the lamp holder to lock or unlock the position of the lamp holder.

7. The lens inspection jig according to claim 1, characterized in that: The lens mount is a clamp-type structure, including a clamping seat sleeve, an adjustment gap, a locking seat, and a locking bolt. A group of connecting shafts are symmetrically arranged on the outer periphery of the rear end of the clamping seat sleeve with a hollow structure. The adjustment gap is axially penetrated on the outer peripheral wall at the top of the clamping seat sleeve. Several groups of locking seats are sequentially arranged on the clamping seat sleeve on both sides of the adjustment gap. One group of locking seats corresponds to one locking bolt, and the locking bolt is threadedly connected to the locking seat so that the clamping seat sleeve can clamp or loosen the lens to be tested.

8. The lens inspection jig according to claim 1, characterized in that: An adjusting screw is rotatably provided on the movable seat, and the adjusting screw is meshed 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.

9. The lens inspection jig 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 moving seat and is connected to the limit nut to limit the extreme value of the pitch of the lens.

10. The lens inspection jig according to claim 1, characterized in that: An adjusting handle is arranged on the fine-tuning rod.

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