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A back-to-back double-lens optical axis consistency test fixture and test method thereof

A test fixture and dual-lens technology, which is applied in the direction of testing optical performance, etc., can solve the problems of complex test tool structure, large test result error, and cumbersome test process, so as to achieve scientific and rapid test methods, reduce test costs, and improve test results. effect of effect

Active Publication Date: 2019-09-13
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a back-to-back dual-lens optical axis consistency test fixture and its test method to solve the problems of complex structure, low degree of automation, cumbersome test process, long test cycle and large test result error of existing test tools. And other issues

Method used

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  • A back-to-back double-lens optical axis consistency test fixture and test method thereof
  • A back-to-back double-lens optical axis consistency test fixture and test method thereof
  • A back-to-back double-lens optical axis consistency test fixture and test method thereof

Examples

Experimental program
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Embodiment 1

[0039] figure 1It is a schematic block diagram of the hardware connection between the camera and the PC of a back-to-back dual-lens optical axis consistency test fixture according to an embodiment of the present invention; figure 2 It is a schematic diagram of the center point mark and the four end point marks of the marked figure on the chart card according to an embodiment of the present invention; image 3 It is a structural schematic diagram of a camera lens and an optical receiver according to an embodiment of the present invention;

[0040] see figure 1 , the back-to-back double-lens optical axis consistency test fixture, the tested double-lens includes a first lens and a second lens set in a back-to-back structure; the first lens and the second lens are respectively arranged in the camera, and the camera is set There is a USB interface for communication connection with PC; figure 1 Among them, DUT is the device under test, Fixture is the fixture, USB is the universa...

Embodiment 2

[0047] This embodiment focuses on the description of a specific implementation of the back-to-back double-lens optical axis consistency test fixture. For other content, refer to other embodiments of the present invention. Figure 4 It is a structural schematic diagram of a double lens fixed on a 180° rotatable lens holder in an embodiment of the present invention; a specific implementation of the back-to-back double lens optical axis consistency test fixture is as follows:

[0048] see Figure 4 , the tested dual lens includes a first lens 11 and a second lens 12 arranged in a back-to-back structure; the first lens 11 and the second lens 12 are respectively arranged in the camera 3;

[0049] The double lens is fixed on the lens holder 4 which can rotate by 180°, and the lens holder 4 is installed on the jig table; the picture card is arranged at one end of the jig table.

[0050] In this way, after the camera takes pictures to obtain the image formed by the first lens 11 on t...

Embodiment 3

[0054] This embodiment focuses on the description of another specific implementation of the back-to-back dual-lens optical axis consistency test fixture. For other content, refer to other embodiments of the present invention. Figure 5 It is a front view of a back-to-back dual-lens optical axis consistency test fixture according to an embodiment of the present invention; Figure 6 It is a top view of a back-to-back double-lens optical axis consistency test fixture according to an embodiment of the present invention; a specific implementation of the back-to-back double-lens optical axis consistency test fixture is as follows:

[0055] see Figure 5 and Figure 6 , the tested dual lens includes a first lens 11 and a second lens 12 arranged in a back-to-back structure; the first lens 11 and the second lens 12 are respectively arranged in the camera 3;

[0056] The chart includes a first chart 61 and a second chart 62 respectively arranged at both ends of the jig stage 5, and th...

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Abstract

The invention discloses a back-to-back double-lens optical axis consistency test fixture and test method. The test fixture comprises a fixture stage and graph cards; the graph cards and two lenses are arranged on the fixture stage; the graph cards are located at the object sides of the two lenses; each of the graph cards is provided with a rotary variable mark graph; the mark graph includes a center point mark and four end point marks; connecting lines between the non-adjacent end point marks of the mark graph are perpendicular to and equally divided by each other, and the center point mark of the mark graph is overlapped with perpendicular equal-division points; the lens surfaces of the two lenses are parallel with the graph card surfaces of the corresponding graph cards; connecting lines between the center point marks of the graph cards and the centers of the two lenses are perpendicular to the lens surfaces of the two lenses; the tested two lenses include a first lens and a second lens which are arranged in a back-to-back manner; the first lens and the second lens are arranged in a camera; and the camera is provided with a USB interface for communicating with a PC. With the back-to-back double-lens optical axis consistency test fixture and test method provided by the technical schemes of the invention adopted, the problem of judging the consistency of optical axes can be judged. The accuracy of test results of the test fixture and test method is highly.

Description

technical field [0001] The invention relates to the technical field of optical lens testing, in particular to a back-to-back double-lens optical axis consistency test fixture and a testing method thereof. Background technique [0002] With the enhancement of computer processing capabilities, more and more technologies are implemented based on image processing, such as machine vision for robotics, machine vision for industrial automation production, 3D printing, 3D reconstruction technology, etc., in order to obtain accurate For image information, the lens needs to have relatively high precision, and the inclination angle, displacement deviation and rotation error of the optical axis of the lens are very important parameters. [0003] In the existing optical lens testing process, it is often necessary to use different testing tools and testing methods to test the above-mentioned different parameters of the lens, resulting in complex structure of testing tools, low degree of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 盖增园王仲楼高强
Owner GOERTEK OPTICAL TECH CO LTD
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