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Infrared detector nonuniformity corrector

A non-uniformity correction, infrared detector technology, applied in measuring devices, instruments, scientific instruments, etc., to achieve the effect of wide application range, simple processing, and wide application

Inactive Publication Date: 2013-04-17
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an infrared detector non-uniformity correction device, which solves the problem of non-uniform infrared focal plane uniformity correction with a simple structure, simple processing and stable operation

Method used

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  • Infrared detector nonuniformity corrector

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Experimental program
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Embodiment Construction

[0021] Such as figure 1 , figure 2 As shown, the non-uniform correction device of the present invention is mainly composed of a correction blade, a blade bearing seat, a blade counterweight seat, a motor seat, a motor bearing seat, a stepping motor, a magnetic steel, a Hall switch, and the like.

[0022] The driving motor for correcting the movement of the blade adopts a stepping motor. In order to ensure the reliability of the blade in a vibrating environment, the correction blade is clamped and fixed between the blade counterweight seat and the limit block, and passes through the limit block and the inner side of the blade bearing seat. The cooperation of the groove limits the swing stroke of the correction vane. Specifically, the correction blade can be connected and fixed with the limit block and the blade counterweight seat through two countersunk screws. Fix it with epoxy glue, and install the blade bearing seat with the bearing and bearing cover on the other end of t...

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PUM

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Abstract

The invention provides an infrared detector nonuniformity corrector, which solves the problem of correcting the uniformity of a non-uniform infrared focal plane with a simple structural form, is easy to process and can be stable operated. The infrared detector nonuniformity corrector comprises a correcting blade, a blade counterweight base, a blade bearing pedestal, a step motor and a control circuit thereof, the correcting blade is used for covering an optical lens, the step motor is used for driving the correcting blade to swing to and fro, two Hall sensors for setting limited positions, which correspond to the operation of the correcting blade, are arranged on the front end surface of an outer lens barrel, a steel magnet which corresponds to the Hall sensors is fixed on the correcting blade, and the output ends of the Hall sensors are connected with the control circuit.

Description

technical field [0001] The invention relates to an infrared detector non-uniformity correction device. Background technique [0002] Theoretically, when the infrared detector is irradiated by uniform light, the response of each pixel is exactly the same. However, in practice, due to the inhomogeneity of the semiconductor material used to make the device, mask errors, defects, processes and other factors, the response values ​​are not exactly the same, that is, non-uniformity. Non-uniformity varies with the temperature of the detector's working environment. Due to the existence of non-uniformity, the acquired image signal is blurred, distorted, and even the detector loses the ability to detect. However, the current state of technology makes it difficult to design an infrared focal plane detector with ideal uniformity. [0003] Most of the commonly used correction blades are installed between the optical lens and the infrared detector, but this solution is not suitable for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01J5/06
Inventor 武登山曹剑中武力王华伟张兆会闫阿奇张建周祚锋范哲源
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI