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Polarizing transmissive light-blocking ring for cold aperture of infrared cooling detector and manufacturing method

A light-blocking ring and detector technology is applied in the field of light-blocking rings, which can solve the problems of limiting the application of high-sensitivity infrared detectors, unfavorable for the signal-to-noise ratio of infrared refrigeration detectors, and unable to achieve complete absorption of stray radiation, etc. Simple design method, high sensitivity effect

Active Publication Date: 2018-01-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The light-blocking ring structure in practical applications is far from being able to completely absorb stray radiation, which is not conducive to the improvement of the signal-to-noise ratio of infrared cooling detectors, and limits the application of high-sensitivity infrared detectors

Method used

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  • Polarizing transmissive light-blocking ring for cold aperture of infrared cooling detector and manufacturing method
  • Polarizing transmissive light-blocking ring for cold aperture of infrared cooling detector and manufacturing method
  • Polarizing transmissive light-blocking ring for cold aperture of infrared cooling detector and manufacturing method

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Embodiment Construction

[0029] The implementation and design principles of the polarized transmissive light-blocking ring for efficiently absorbing stray radiation in the present invention will be described in detail below with reference to the accompanying drawings.

[0030] The polarized transmissive light-blocking ring designed by the present invention is applied to high-sensitivity infrared cooling detectors, and the purpose is to make the light-blocking ring in the cold diaphragm of the infrared cooling detector not only have a light and thin volume, but also significantly improve its resistance to stray radiation. The absorbing ability of the stray radiation is suppressed after secondary scattering on the light blocking ring, so as to achieve a higher efficiency of the cold aperture, thereby improving the signal-to-noise ratio and detection sensitivity of the infrared cooling detector.

[0031] The embodiment of the present invention is to select two pieces of linear film polarizers whose transm...

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Abstract

The invention discloses a polarized transmission-type vane for an infrared cooling detector cold stop and a making method thereof. The vane is formed by gluing two linear film polarizers; and transmission axes of the two linear film polarizers are vertical mutually to realize light extinction. The two linear film polarizers are cut into vane shapes meeting the design principle of the infrared cooling detector cold stop and are glued into a whole as a vane. Compared with the traditional vane structure, the vane of the invention has stronger absorption performance and a lighter weight, energy scattered after stray radiation on the vane causes secondary scattering can be effectively restrained, and the signal-to-noise ratio and the detection sensitivity of the infrared cooling detector are further improved.

Description

technical field [0001] The invention relates to a light-blocking ring in a cold diaphragm of an infrared cooling detector and a manufacturing method thereof, in particular to a polarization-type transmission-type light-blocking ring in a cold diaphragm of an infrared cooling detector and a manufacturing method thereof. Background technique [0002] With the development of optical technology, infrared imaging optical system has gained more and more applications in aerospace, military, medical and other fields. In infrared cooling detectors, stray radiation will cause the image contrast of the system to decrease, lose high-frequency signals of the target, and color distortion, etc., thereby affecting the spatial detection distance and resolution ability of the detector. Therefore, for high-precision infrared cooling detectors, the suppression of stray radiation is particularly critical. [0003] In the infrared cooling detector, since it detects infrared radiation, when the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/00G02B5/30
CPCG02B5/003G02B5/005G02B5/006G02B5/3033
Inventor 黄潇张娴婧白剑
Owner ZHEJIANG UNIV