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A device and method for testing the resolution of a wide-angle lens

A wide-angle lens and resolution technology, which is used in measurement devices, optical instrument testing, and optical performance testing. Convenience and cost reduction

Active Publication Date: 2022-04-15
SHENZHEN GONGJIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, since there is no pre-distortion correction for commonly used targets, when testing the resolution of wide-angle lenses, when the edge distortion is large, the edge image deformation is large, resulting in indistinguishable image edge resolution, resulting in large resolution measurement errors or Misjudgment caused by production line operators

Method used

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  • A device and method for testing the resolution of a wide-angle lens
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  • A device and method for testing the resolution of a wide-angle lens

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the application. The terms used herein in the specification are for the purpose of describing specific embodiments only, and are not intended to limit the present application.

[0035] In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be ...

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Abstract

The invention belongs to the technical field of photoelectric testing, and specifically discloses a device and a method for testing the resolution of a wide-angle lens. The device is composed of a fixed bracket, a target target, a wide-angle lens to be tested and an illumination device; The distance from the target target is adjustable, and the lighting device is arranged at the other end of the wide-angle lens to be tested. The invention also discloses a method for testing the resolution of the wide-angle lens by using the device. The invention can test the resolution of various large-distortion lenses and help production line operators to quickly adjust the focal length. It designs theoretical distortion data curves based on wide-angle lenses. The cost of the whole test improves the testing integrity of the product and ensures the quality of the product.

Description

technical field [0001] The invention belongs to the technical field of photoelectric testing, in particular to a device and method for testing the resolution of a wide-angle lens. Background technique [0002] At present, the resolution test device usually consists of a target target, an illumination device, and a corresponding fixture positioning device. The target target is photographed under certain lighting conditions through the imaging system, and then the image is read by human eyes or combined with corresponding image analysis software. MTF value to determine image sharpness. [0003] In the wide-angle lens test and focusing operation of the above-mentioned resolution testing device, due to the large field of view, the distortion of the central field of view is small, and the distortion changes relatively slowly, while the distortion of the off-axis field of view is large and changes quickly. Moreover, since there is no pre-distortion correction for commonly used ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
CPCG01M11/0264
Inventor 刘辉关锐
Owner SHENZHEN GONGJIN ELECTRONICS CO LTD
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