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Perforated diaphragm for uncooled infrared detector

An uncooled infrared and detector technology, applied in the direction of electric radiation detectors, instruments, measuring devices, etc., can solve problems such as weakening, interfering with target observation, and system failure, so as to reduce the difference in radiation energy, reduce non-uniformity, and improve The effect of the signal-to-noise ratio

Active Publication Date: 2020-06-05
KUNMING INST OF PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The images formed by these stray lights will reduce the contrast and temperature sensitivity of infrared thermal imaging, and interfere with the observation of the target; in severe cases, the detected target signal will be completely lost in the non-uniform stray light background, and the system will not be able to extract the target, which will affect the detection capability of the system , and even cause the entire system to fail
These non-uniform images cannot be attenuated by baffle correction in front of the detector
For systems equipped in weapons, the "pot cover effect" caused by stray light of uncooled infrared detectors has been common for a long time, and there is currently a lack of effective solutions, which is not conducive to improving the combat capabilities of infrared weapons and equipment

Method used

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  • Perforated diaphragm for uncooled infrared detector

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Embodiment Construction

[0018] 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, not all, embodiments of the present invention. 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. In the following description, in order to clearly show the structure and working method of the present invention, the accompanying drawings will be used as the basis to describe with the help of many directional words, but "front", "rear", "left", "right", Words such as "up" and "down" are to be understood as convenient terms, and should not be understood as restrictive terms.

[0019] figure 1 It is a schematic diagram of the application of the diaphragm body ...

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Abstract

The invention discloses a perforated diaphragm for an uncooled infrared detector, and aims to provide a diaphragm for an uncooled infrared detector, which can reduce stray light. The diaphragm comprises a diaphragm body of which the middle part is provided with a special-shaped open pore and the outer frame is rectangular, the special-shaped open pore is a quadrangle formed by four arc edges, theinner arc sides of the four arc edges of the special-shaped open pore face the center of the special-shaped open pore, and every two opposite arc edges are symmetrically arranged. The size of the outer frame of the diaphragm body is not smaller than the size of the window of the non-refrigeration detector. According to the invention, the image uniformity can be effectively improved, and the pot cover effect is weakened.

Description

technical field [0001] The invention relates to the technical field of optical components, in particular to an aperture diaphragm for an uncooled infrared detector. Background technique [0002] The uncooled infrared focal plane detector does not need a cooling device and can work at ordinary temperatures (-50°C~+70°C). It has the advantages of small size, light weight, low power consumption, long life, low cost, and fast start-up. In recent years, with the continuous advancement of uncooled infrared focal plane detector technology and the gradual decline in manufacturing costs, its cost performance has increased rapidly, creating good conditions for the promotion of large-scale military and civilian market applications of uncooled infrared imaging systems. Infrared imaging technology has also become one of the hot spots in the development and application of thermal imaging technology. [0003] In infrared imaging systems, compared with cooled infrared detectors, uncooled i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/10G01J5/08
CPCG01J5/10G01J5/0803G01J2005/106
Inventor 杨开宇金宁刘愚曹凌徐曼普龙张宝辉王炜毅明景谦
Owner KUNMING INST OF PHYSICS
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