CN215726717U

CN215726717U - Lens or material microprism detection equipment

Info

Publication number: CN215726717U
Application number: CN202121915995.6U
Authority: CN
Inventors: 廖亮举
Original assignee: Shantou Rongliang Technology Co ltd
Current assignee: Shantou Rongliang Technology Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-01
Anticipated expiration: 2031-08-16

Abstract

The utility model relates to the technical field of detection equipment, in particular to a device for detecting microprism of a lens or a material. The utility model has the beneficial effects that: according to the scheme, the camera is adopted to monitor the target, and images before and after the cursor deviation are compared for automatic identification and judgment. And fitting calculation is carried out according to the displacement and the corresponding points of the camera pixels. The new test form avoids man-made subjective judgment errors and ambient light interference, and the response precision can reach the recognition capability of the camera pixel level, so that the test efficiency, the accuracy and the repeatability are greatly improved.

Description

Lens or material microprism detection equipment

Technical Field

The utility model relates to the technical field of detection equipment, in particular to micro-prism degree detection equipment for a lens or a material.

Background

The existing instruments for testing microprism of lenses or materials are mainly used for projecting laser spots onto a target with a scale. The scale on the target is read by human eyes, and the prism degree is converted from the displacement. The method has the main defects that the method is man-made in charge of errors, and tiny offset cannot be accurately identified. As shown in fig. 1 below: the sample is 2 meters away from the target, and the laser with the wavelength of 600nm is adopted, and the light spot is about 2mm in diameter. When the sample was placed, the spot was shifted by 0.25cm, i.e., 0.125 prismatic degrees. The formula P is D/D, P is the prism Δ, D is the spot offset distance (in cm), and D is the target and sample distance (in m).

In summary, the actual test light spot also has a diffraction aperture, and the influence of the ambient stray light makes manual test very difficult and difficult to maintain the test repeatability. Individual instruments tested by increasing the target and sample distances, with the laser spot of the target offset by a greater distance. E.g. from 2m to 10 m, the spot displacement distance is extended by a factor of 5. Making the displacement distance easier to read. (the scattering of the laser spot causes the spot to become larger and blurred, which is not yet a good judgment)

The applicant can see the defects of the prism degree detection equipment, inherits the spirit of research innovation and lean refinement, combines production practice, and provides a practical solution by using a professional scientific method, so that the application of the scheme is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of artificial subjective error of the traditional prism degree testing instrument in the prior art. Meanwhile, the testing efficiency and accuracy are improved, and the testing data can be traced and accurately compared. And the discomfort caused by long-time testing and observation of laser spots by human eyes is reduced. And an automatic judgment reliable scheme is provided in automatic online production.

The sample support is arranged between the target and the laser emitter, and the camera is arranged between the sample support and the target.

Specifically, the camera is arranged below the laser emitter, the support and the sample support of the camera are arranged on the sliding base, and the target is arranged at one end of the sliding base.

Specifically, laser emitter bottom be equipped with on the displacement adjustment base, the displacement adjustment base divide into lateral displacement adjusting part and vertical displacement adjusting part, vertical displacement adjusting part connects in the laser emitter bottom and drives laser emitter displacement from top to bottom, lateral displacement adjusting part connects in vertical displacement adjusting part and drives vertical displacement adjusting part and controls the displacement.

Specifically, the laser emitter is adjusted to align to the center of the target through the displacement adjusting base.

The utility model has the beneficial effects that: according to the scheme, the target is monitored by the camera, images before and after the cursor is deviated are compared for automatic identification and judgment, and fitting calculation is carried out according to the displacement and the corresponding point of the camera pixel; the new test mode avoids human subjective judgment error and ambient light interference. The response precision can reach the recognition capability of the camera at the pixel level; thereby greatly improving the testing efficiency, accuracy and repeatability; and the eye observation fatigue of the testers is reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural diagram of the present invention;

fig. 3 is a schematic diagram of the principle of the present invention.

Description of the reference notes: sample holder 1, computer 2, target 3, laser emitter 4 and camera 5.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Referring to fig. 2 to 3, which are schematic structural views of the present invention, the present invention includes a sample holder, a computer, a target, a laser emitter and a camera, wherein the computer is connected to the camera and the laser emitter via signals, the sample is placed on the sample holder, the sample holder is disposed between the target and the laser emitter, the camera is disposed between the sample holder and the target, the camera is disposed below the laser emitter, the holder and the sample holder of the camera are disposed on a sliding base, and the target is disposed at one end of the sliding base. The camera can adopt a five-million-pixel ultra-wide-angle distortion-free zoom lens, so that the precision of the equipment is improved.

According to the scheme, the bottom of the laser emitter is provided with the displacement adjusting base, the displacement adjusting base is divided into the transverse displacement adjusting assembly and the longitudinal displacement adjusting assembly, the longitudinal displacement adjusting assembly is connected to the bottom of the laser emitter and drives the laser emitter to move up and down, the transverse displacement adjusting assembly is connected to the longitudinal displacement adjusting assembly and drives the longitudinal displacement adjusting assembly to move left and right, and the laser emitter adjusts the alignment target center through the displacement adjusting base.

According to the technical scheme, the sample lens is placed on the sample support firstly, the testing distance can be shortened to 0.8m, the camera placing position is properly adjusted according to the target and the sample distance, the height of the camera placing position is properly adjusted so as not to shield a laser beam, the camera placing position is close to the center of the target as much as possible, and before and after the sample is placed, two images of a laser spot on the target are automatically compared. The camera sends the checked image data to the computer, and the image recognition software carries out pixel conversion on the contrast offset. And obtaining the actual offset distance, and calculating according to the distance between the target and the sample. An accurate prism value is obtained. Through testing, the prism degree can be theoretically accurate to 0.002, the accuracy of the actual measurement result is 0.004, and the prism degree is far greater than the result calculated after human eye observation.

According to the scheme, the camera replaces human eyes for observation, and artificial subjective errors are discharged. The precision of the traditional prism degree test is improved from 0.1 delta precision to 0.004 delta precision. The manual work intensity is greatly reduced, and the on-line monitoring of automatic production can be realized.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lens or material microprism inspection apparatus comprising: sample support, computer, mark target, laser emitter and camera, its characterized in that: the computer signal connect to camera and laser emitter, the sample is placed at the sample support, and the sample support sets up between mark target and laser emitter, and the camera setting is between sample support and mark target.

2. The lens or material microprismatic detection apparatus of claim 1, wherein: the camera is arranged below the laser emitter, the support of the camera and the sample support are arranged on the sliding base, and the target is arranged at one end of the sliding base.

3. The lens or material microprismatic detection apparatus of claim 2, wherein: the laser emitter bottom be equipped with on the displacement adjustment base, the displacement adjustment base divide into lateral displacement adjusting part and vertical displacement adjusting part, vertical displacement adjusting part connects in the laser emitter bottom and drives the laser emitter displacement from top to bottom, lateral displacement adjusting part connects in vertical displacement adjusting part and drives vertical displacement adjusting part and controls the displacement.

4. The lens or material microprismatic detection apparatus of claim 3, wherein: the laser emitter is adjusted to align the center of the target through the displacement adjusting base.