Lens center deviation measuring instrument

Abstract

The utility model discloses a lens center deviation measuring instrument which comprises a measuring instrument body, a lens clamping device is fixedly installed in the middle of the measuring instrument body, a light source module is installed at one end of the measuring instrument body through a bolt, and an image acquisition module is installed at the other end of the measuring instrument body through a bolt. The light source module is arranged at one end of the lens and emits parallel light beams, the image acquisition module is arranged at the other end of the lens and can acquire light spot images passing through the lens, and the data processing module is arranged and used for analyzing the light spot images and calculating the deviation between the optical center and the geometric center of the lens. The measurement result is displayed on the display module, the numerical value and the image of the center deviation are conveniently known, automatic measurement of the center deviation of the lens is further achieved, the measurement efficiency is improved, the lens can be supported in advance through the telescopic rod, the spring and the supporting seat, the symmetrical clamping plates can be adjusted according to the size of the lens, and the measurement accuracy is improved. Therefore, the lens can be effectively fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical measurement technical field, concretely is a lens center deviation measuring instrument. BACKGROUND

[0002] In the processing engineering of optical lenses, the center deviation (i.e. the offset of the optical center and the geometric center) of the lenses is an important quality index, and the excessive center deviation will affect the imaging quality and use effect of the lenses, so the center deviation measuring instrument is needed for measurement.

[0003] The prior art discloses a patent document with the publication number CN220893749U, and the technical scheme disclosed in the patent document is as follows: a spectacle lens optical detector, comprising: a detector, the detector comprises an instrument body, a support is fixedly connected to the top left side of the instrument body, a detection head is fixedly connected to the bottom right side of the support, and an opening is formed in the top right side of the instrument body; the utility model can effectively fix the lenses, can ensure that the center axis of the lenses is located directly below the detection head, can ensure that the axis of the lenses is aligned with the axis of the detection head, cannot change the propagation path and angle of light, and can prevent the optical detection result from being deviated.

[0004] The above technical scheme fixes the lenses by setting a clamping mechanism, the clamping mechanism moves the clamping plates on both sides by relying on the gas supply of the air pump, and then the clamping plates on both sides rely on the gas source, if the gas source is interrupted, the clamping mechanism cannot work normally, and the air pump may appear unstable gas pressure in the use process, resulting in inconsistent clamping force and affecting the clamping effect. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a lens center deviation measuring instrument to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a lens center deviation measuring instrument, comprising a measuring instrument main body, a lens clamping device is fixedly installed in the middle of the measuring instrument main body, a light source module is bolted on one end of the measuring instrument main body, and an image acquisition module is bolted on the other end of the measuring instrument main body.

[0007] The lens clamping device comprises a clamping seat, a through slot is formed in the middle of the front and rear sides of the clamping seat, a fixed circular plate is bolted to the bottom of the inner side of the clamping seat, an extension rod is fixedly connected to the fixed circular plate, a spring is arranged on the outer side of the extension rod, a support seat is fixedly connected to the top side of the extension rod and the spring, an installation frame is bolted to the top end of the clamping seat, a two-way threaded rod is arranged in the installation frame through a bearing, a knob is arranged on one side of the two-way threaded rod, movable blocks are threadedly connected to the front and rear outer walls of the two-way threaded rod, adjusting rods are bolted to the upper ends of the movable blocks, clamping plates are fixedly connected to the other ends of the adjusting rods, and antiskid pads II are arranged on the inner sides of the clamping plates.

[0008] In the above technical solution, the extension rod, the spring and the support seat can pre-support the lens, the symmetrical clamping plates can be adjusted according to the size of the lens, and the effective fixing of the lens is realized.

[0009] As a further preferred embodiment of the present technical solution, a display module is arranged on one side of the measuring instrument main body, a data processing module is arranged on the other side of the measuring instrument main body, the data processing module is connected to the image acquisition module through wires, and the data processing module is connected to the display module through wires.

[0010] In the above technical solution, the light source module is arranged to emit parallel light beams, the image acquisition module is arranged at the other end of the lens to acquire the light spot image after passing through the lens, and the data processing module is arranged to analyze the light spot image and calculate the deviation between the optical center and the geometric center of the lens.

[0011] As a further preferred embodiment of the present technical solution, a sleeve rod is fixedly connected to the bottom side of the clamping seat, a sleeve is slidingly connected to the outer wall of the sleeve rod, and the sleeve is fixedly connected to the middle part of the measuring instrument main body.

[0012] As a further preferred embodiment of the present technical solution, positioning holes I are formed in the front and rear sides of the upper end of the sleeve, positioning holes II are arranged in the front and rear sides of the sleeve rod, and a positioning rod is inserted between one of the positioning holes II and the positioning holes I.

[0013] In the above technical solution, the height of the clamped and fixed lens can be adjusted, which is more convenient for subsequent measurement.

[0014] As a further preferred embodiment of the present technical solution, an antiskid pad I is arranged on the inner side of the support seat, and a lens main body is clamped between the antiskid pad I and two antiskid pads II.

[0015] In the above technical solution, the antiskid pad I and the antiskid pad II can reduce the sliding phenomenon of the lens.

[0016] As a further preferred embodiment of the present technical solution, the light source module, the lens main body and the image acquisition module are on the same horizontal line.

[0017] As a further preferred of the technical solution, the adjusting rods are arranged inside the clamping seats through the through slots.

[0018] The lens center deviation measuring instrument has the following beneficial effects:

[0019] (1) The lens clamping device is installed, the telescopic rods, springs and support seats are arranged to support the lens in advance, the symmetrical clamping plates are arranged to be adjusted according to the size of the lens, and then the effective fixing of the lens is realized, and when adjusting, the two end clamping plates can be adjusted through the knobs, compared with the comparative file, the two end clamping plates are more stable and not easy to be disturbed by external factors through gas transmission, and the equipment dependency is reduced.

[0020] (2) The light source module is arranged at one end of the lens to emit parallel light beams, the image acquisition module is arranged at the other end of the lens to acquire the light spot image after the lens, the data processing module is arranged to analyze the light spot image, calculate the deviation of the optical center and the geometric center of the lens, and display the measurement result on the display module, so that the numerical value and image of the center deviation are easily understood, and then the automatic measurement of the lens center deviation is realized, and the measurement efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the whole utility model;

[0022] Figure 2 It is a structure schematic view of the other side of the utility model;

[0023] Figure 3 It is a structure schematic view of the lens clamping device of the utility model;

[0024] Figure 4 It is an enlarged view of the A figure of the utility model;

[0025] In the drawing: 1, measuring instrument main body; 11, display module; 12, data processing module; 2, light source module; 3, lens clamping device; 4, image acquisition module; 5, lens main body; 31, sleeve; 32, sleeve rod; 311, positioning hole one; 321, positioning hole two; 33, positioning rod; 34, clamping seat; 341, through slot; 342, fixed circular plate; 343, telescopic rod; 344, spring; 345, support seat; 346, anti-skid pad one; 35, mounting frame; 351, two-way threaded rod; 352, knob; 353, movable block; 354, adjusting rod; 355, clamping plate; 356, anti-skid pad two. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0027] The utility model provides technical scheme: such as Figure 1 And Figure 2 As shown in the figure, in the embodiment, a lens center deviation measuring instrument comprises a measuring instrument main body 1, the measuring instrument main body 1 one side is provided with display module 11, the measuring instrument main body 1 other side is provided with data processing module 12, data processing module 12 is connected with image acquisition module 4 through wire, data processing module 12 is connected with display module 11 through wire, the measuring instrument main body 1 middle part is fixedly installed with lens clamping device 3, the measuring instrument main body 1 one end bolt installation has light source module 2, the measuring instrument main body 1 other end bolt installation has image acquisition module 4, light source module 2, lens main part 5 and image acquisition module 4 are on the same horizontal line, by setting light source module 2 in the one end of lens, emit parallel light beam, set up image acquisition module 4 in the other end of lens, can gather the light spot image after passing through lens, set data processing module 12 for analyzing light spot image, calculate the deviation of optical center and geometric center of lens, and display the measurement result on display module 11, the numerical value and image of center deviation are conveniently understood, and then realize the automatic measurement of lens center deviation, improve the measuring efficiency, wherein data processing module 12 compares the center position of light spot with the geometric center of lens through image processing algorithm, and calculates the center deviation through the optical formula and lens parameters of prior art, such as refractive index.

[0028] As shown in the figure, in the embodiment, a lens center deviation measuring instrument comprises a measuring instrument main body 1, the measuring instrument main body 1 one side is provided with display module 11, the measuring instrument main body 1 other side is provided with data processing module 12, data processing module 12 is connected with image acquisition module 4 through wire, data processing module 12 is connected with display module 11 through wire, the measuring instrument main body 1 middle part is fixedly installed with lens clamping device 3, the measuring instrument main body 1 one end bolt installation has light source module 2, the measuring instrument main body 1 other end bolt installation has image acquisition module 4, light source module 2, lens main part 5 and image acquisition module 4 are on the same horizontal line, by setting light source module 2 in the one end of lens, emit parallel light beam, set up image acquisition module 4 in the other end of lens, can gather the light spot image after passing through lens, set data processing module 12 for analyzing light spot image, calculate the deviation of optical center and geometric center of lens, and display the measurement result on display module 11, the numerical value and image of center deviation are conveniently understood, and then realize the automatic measurement of lens center deviation, improve the measuring efficiency, wherein data processing module 12 compares the center position of light spot with the geometric center of lens through image processing algorithm, and calculates the center deviation through the optical formula and lens parameters of prior art, such as refractive index. Figure 3 And Figure 4As shown, the clamping seat 34 bottom side fixedly connected with sleeve rod 32, sleeve rod 32 outer wall slidingly connected with sleeve 31, sleeve 31 is fixedly connected in the measuring instrument main body 1 middle part, sleeve 31 upper end front and back side is provided with positioning hole one 311, sleeve rod 32 front and back side is provided with positioning hole two 321, positioning hole one 311 and one of positioning hole two 321 between the plug is connected with positioning rod 33, lens clamping device 3 includes clamping seat 34, clamping seat 34 front and back two sides of the middle part are provided with through slot 341, clamping seat 34 inner side bottom bolted with fixed circular plate 342, fixed circular plate 342 is fixedly connected with telescopic rod 343, telescopic rod 343 outer side is provided with spring 344, telescopic rod 343 and spring 344 top side fixedly connected with support seat 345, clamping seat 34 top end bolted with mounting frame 35, mounting frame 35 is provided with two-way threaded rod 351 through bearing, two-way threaded rod 351 one side is provided with knob 352, two-way threaded rod 351 front and back outer wall are threadedly connected with movable block 353, movable block 353 upper end bolted with adjusting rod 354, adjusting rod 354 all pass through through slot 341 and are arranged in the inner side of clamping seat 34, adjusting rod 354 other end is fixedly connected with clamping plate 355, clamping plate 355 inner side is provided with antiskid pad two 356, support seat 345 inner side is provided with antiskid pad one 346, antiskid pad one 346 and two antiskid pad two 356 between the clamping lens main body 5, the setting antiskid pad one 346 and antiskid pad two 356 can reduce the phenomenon of lens sliding, through the installation lens clamping device 3, the setting telescopic rod 343, spring 344 and support seat 345 can support the lens in advance, the setting symmetrical clamping plate 355 can be adjusted according to the size of the lens, and then realize the effective fixation of the lens, and when adjusting, the knob 352 can be used to adjust the clamping plate 355 at both ends, compared with the comparative document, the two ends of the clamping plate are moved more stable by gas transmission, not easy to be disturbed by external factors, and the equipment dependency is reduced.

[0029] The utility model provides a kind of lens center deviation measuring instrument, specific working principle is as follows: lens main body 5 is fixed on lens clamping device 3, i. e. detection personnel places lens on antiskid pad one 346, rotates knob 352 with other hand and drives two-way threaded rod 351 rotation, so that the movable block 353 of both sides moves towards or away, the clamping plate 355 of both ends is moved towards or away by the adjusting rod 354 of both ends, until clamping plate 355 is fixed with lens, and detection personnel can press lens during fixing process, so that support seat 345 compression spring 344 and telescopic rod 343, until clamping plate 355 and support seat 345 between lens are stuck, it can be;Parallel light beam is emitted by light source module 2, light beam forms light spot after passing through lens, and light spot image is collected by image acquisition module 4, then data is transmitted to data processing module 12, and data processing module 12 compares the center position of light spot by image processing algorithm, and the geometric center of lens, calculates center deviation, finally, measurement result is shown on display module 11, realize the automatic measurement of lens center deviation.

[0030] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lens centering deviation measuring instrument comprising a measuring instrument body (1), characterized in that: The measuring instrument main body (1) is fixedly installed with a lens clamping device (3) in the middle, one end of the measuring instrument main body (1) is bolted with a light source module (2), and the other end of the measuring instrument main body (1) is bolted with an image acquisition module (4). The lens clamping device (3) comprises a clamping seat (34), a through slot (341) is formed in the middle of the front and back sides of the clamping seat (34), a fixed circular plate (342) is bolted to the bottom of the inner side of the clamping seat (34), the fixed circular plate (342) is fixedly connected with an extension rod (343), a spring (344) is arranged on the outer side of the extension rod (343), the extension rod (343) and the spring (344) are fixedly connected with a support seat (345) on the top side, an installation frame (35) is bolted to the top end of the clamping seat (34), a two-way threaded rod (351) is arranged in the installation frame (35) through a bearing, a knob (352) is arranged on one side of the two-way threaded rod (351), movable blocks (353) are threadedly connected to the front and back outer walls of the two-way threaded rod (351), adjusting rods (354) are bolted to the upper ends of the movable blocks (353), clamping plates (355) are fixedly connected to the other ends of the adjusting rods (354), and antiskid pads two (356) are arranged on the inner sides of the clamping plates (355).

2. The lens center deviation measuring instrument according to claim 1, wherein: A display module (11) is arranged on one side of the measuring instrument main body (1), a data processing module (12) is arranged on the other side of the measuring instrument main body (1), the data processing module (12) is connected with the image acquisition module (4) through wires, and the data processing module (12) is connected with the display module (11) through wires.

3. The lens center deviation measuring instrument of claim 1, wherein: The clamping seat (34) is fixedly connected with a sleeve rod (32), the sleeve rod (32) is slidably connected with a sleeve (31), and the sleeve (31) is fixedly connected to the middle of the measuring instrument main body (1).

4. The lens center deviation measuring instrument according to claim 3, wherein: Positioning holes one (311) are formed in the front and back sides of the upper end of the sleeve (31), positioning holes two (321) are arranged in the front and back sides of the sleeve rod (32), and a positioning rod (33) is inserted between the positioning holes one (311) and one of the positioning holes two (321).

5. The lens center deviation measuring instrument of claim 1, wherein: An antiskid pad one (346) is arranged on the inner side of the support seat (345), and the lens main body (5) is clamped between the antiskid pad one (346) and two antiskid pads two (356).

6. The lens center deviation measuring instrument of claim 1, wherein: The light source module (2), the lens main body (5) and the image acquisition module (4) are on the same horizontal line.

7. The lens center deviation measuring instrument of claim 1, wherein: The adjusting rods (354) are arranged on the inner side of the clamping seat (34) through the through slots (341).

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