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Image sensor transmission function testing device

An image sensor and transfer function technology, which is applied in the field of image sensor transfer function test devices, can solve the problems of image sensor transfer function test error increase, etc., and achieve the effect of high-precision adjustment and improved accuracy

Active Publication Date: 2018-06-22
佛山长光智能制造研究院有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The size of the image sensor is getting smaller and smaller, due to the limitation of the resolution and control accuracy of the translation stage, the test error of the transfer function of the image sensor increases

Method used

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  • Image sensor transmission function testing device

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Aiming at the problem that the test error of the image sensor transfer function is too large when performing the image sensor transfer function test in the prior art, the present application discloses an image sensor transfer function test device, see figure 1 , the device can include:

[0029] A filter 2, an integrating sphere 3, a target 4, a displacement and rotation mechanism 5, an optical system 6, an image sensor to be tested 7, and ...

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Abstract

The invention provides an image sensor transmission function testing device which comprises an optical filter, an integrating sphere, a target, a displacement and rotation mechanism, an optical system, a to-be-tested image sensor and a displacement platform sequentially arranged along a preset optical path. The optical filter is used for filtering light output by a light source to acquire monochromatic light, the integrating sphere is used for receiving the monochromatic light to serve as a uniform face light source and projecting the light onto the target, the light is focused through the optical system to be imaged to the to-be-tested image sensor, the displacement and the rotation mechanism is used for adjusting position of the target, and the displacement platform is used for driving the to-be-tested image sensor to move. By adopting the displacement and rotation mechanism to adjust position of the target and to adjust phase difference between a target image and an image sensor image element, high-magnification imaging effect of an optical system is utilized to realize high-precision adjustment of the target image on an image sensor image plane, high-precision adjustment of phase deviation between the target image and the image sensor image pixel is realized, and testing result accuracy of the image sensor is improved.

Description

technical field [0001] The invention relates to the technical field of testing devices, in particular to an image sensor transfer function testing device. Background technique [0002] With the continuous development of science and technology, high-resolution, high-contrast photosensitive devices, such as CCD sensors and CMOS sensors, are required in applications such as image acquisition, hyperspectral imaging, particle imaging velocimetry, and tracking and positioning of fast-moving targets. In order to meet the working requirements, there is a high requirement on the transfer function of the image sensor, and the repeated test accuracy of the transfer function of the image sensor needs to be less than 3%. [0003] The test methods of the transfer function of the image sensor in the prior art are the edge method and the rectangular fringe method. These two test methods are to place the edge target or the rectangular fringe target in front of the optical system, and irradia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 杨永强李俊霖唐延甫袁理
Owner 佛山长光智能制造研究院有限公司
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