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Telescopic U-shaped border blackbody field aperture capable of controlling temperature

A field of view diaphragm, U-shaped technology, applied in the field of infrared thermal imaging, can solve the problems of target loss, scene imaging, etc., achieve the effect of compact structure, broad development and application prospects, and beneficial to practical application

Inactive Publication Date: 2012-07-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the high and low temperature black body or baffle is working, IRFPA cannot image the scene, but can only image the reference source (black body or baffle), which is not suitable for target tracking and other occasions, and may cause target loss

Method used

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  • Telescopic U-shaped border blackbody field aperture capable of controlling temperature
  • Telescopic U-shaped border blackbody field aperture capable of controlling temperature
  • Telescopic U-shaped border blackbody field aperture capable of controlling temperature

Examples

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Effect test

Embodiment

[0038] The application of the present invention is described below in conjunction with the examples, and the refrigeration type HgCdTe infrared detector is used to test in conjunction with the U-shaped frame blackbody field diaphragm. The existence of uniformity has seriously disturbed the observation field of view. The steps to use the U-shaped frame black body field diaphragm are as follows:

[0039] S1. The frame black body field diaphragm is inserted into the field of view at room temperature, such as Figure 8 As shown in (a), the response of the frame blackbody field diaphragm on the IRFPA is collected at this time;

[0040] S2. The temperature control device controls the temperature of the U-shaped frame blackbody field diaphragm to a high temperature (about 50 degrees Celsius), and collects the response of the frame blackbody field diaphragm at this time, such as Figure 8 (b), the U-shaped frame blackbody field diaphragm is retracted immediately;

[0041] S3. Accor...

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PUM

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Abstract

The invention relates to a telescopic U-shaped border blackbody field stop capable of controlling the temperature, belonging to the field of infrared imaging. The telescopic U-shaped border blackbody field stop provided by the invention concretely comprises a fixed plate, a slide plate, a clamping piece and a temperature control device, wherein the fixed plate is arranged at the lowest layer; theslide plate is tightly installed on a slide slot which is formed by the fixed plate and the clamping piece, and the slide plate can slide in the slide slot, thereby completing the insertion and retraction of a U-shaped border blackbody in a visual field; the clamping piece is similarly and tightly installed at the upper part of the slide plate; one end of the fixed plate is bonded with a temperature source component, and the other end is in tight contact with the slide plate; a temperature measuring component is installed on the slide plate; and the output ends of the temperature source component and the temperature measuring component are respectively connected with a temperature controller. The telescopic U-shaped border blackbody field stop provided by the invention is used for the non-uniform calibration and radiation scaling of a stare type focal plane array and completes the non-uniform calibration and the radiation scaling under the condition that a central view field is not influenced. The telescopic U-shaped border blackbody field stop provided by the invention can be used for the fields of refrigeration, the design and manufacturing of a non-refrigeration infrared focal plane detector thermal imaging system, a star infrared thermal imaging system and an infrared warning system, scientific research and the like.

Description

technical field [0001] The invention relates to a stretchable and temperature-controllable U-shaped frame blackbody field diaphragm, which belongs to the field of infrared thermal imaging. Background technique [0002] Infrared Focal Plane Arrays (IRFPA) have the advantages of simple structure, strong detection capability, low power consumption, high frame rate, and good stability. They are used in infrared search systems, airborne forward-looking infrared systems, and imaging guidance It is widely used in head and imaging tracking systems. IRFPA can be divided into two types according to the array structure, one is a linear array, and the other is a staring area array. Among them, the staring area detector is more and more widely used because it omits the complex optical-mechanical scanning structure. [0003] Since the photoelectric responses of thousands of detector elements in IRFPA to the same radiation input are inconsistent, the image quality is polluted by Fixed Pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/02
Inventor 金伟其刘崇亮王霞修金利刘秀徐超
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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