소개 및 분류 적외선 감지기

1 특성 적외선 및 분할 적외선 대역

Natural light according to the wavelength from short to long can be roughly divided into X-ray, ultraviolet, visible light, infrared, microwave and so on. Among them, the wavelength range of infrared is between 0.75μm-1000μm, which is different from other wavelengths of light, infrared emission does not need a specific emission source. All natural objects with temperatures above absolute zero spontaneously radiate infrared rays all the time. This feature of infrared radiation has given birth to the development of infrared detection technology.

According to the infrared spectrum, infrared can be divided into near infrared band, middle infrared band and far infrared band, the corresponding wavelength range is 1μm-3μm, 3μm-40μm, 40μm-1000μm. In the field of infrared detection, infrared is generally divided into near-infrared band, short-wave infrared band, mid-wave infrared band and long-wave infrared band according to infrared atmospheric transmission, the corresponding wavelength range is 1.1μm{{{}}.5μm, 3μm-5μm, 8μm-14μm. 적외선 파장 외부 이들 대역 대부분 흡수 또는 흩어짐 대기 % 2c it is 어려움 to be 식별 by the 감지기 % 2c so 적외선 응답 대역 of 적외선 감지기 및 적외선 대기 전송 대역 일치.

2 적외선 검출기 및 its 작업 원리

전자 구성 요소 사용 감지 적외선 방사선 신호 from objects are called infrared detectors. The core component of the detector is the detector chip, which is composed of MEMS sensor and CMOS readout circuit. The MEMS sensor is used to receive the infrared radiation of the object and generate a response signal, and the CMOS readout circuit chip receives the response signal of the MEMS sensor and processes it into an electrical signal that can be recognized by the back end imaging circuit. The MEMS materials are different, and the response signals generated after receiving infrared radiation are also different.

Common MEMS materials have two categories, one is vanadium oxide, amorphous silicon as the representative of the normal temperature 

3 Classification of infrared detectors

3.1 냉각 적외선 검출기 % 3a

The MEMS sensor material of the cooled infrared detector is a low temperature working material, and the working principle is based on the photoelectric effect generated by infrared radiation. This kind of detector has a high sensitivity and is mostly used in the field of high-end military equipment and space exploration systems.

스털링 칠러 is one of the most widely used infrared detector cooling equipment. The working principle is based on the Stirling refrigeration cycle, the gas does work in the adiabatic expansion process, and the temperature of itself is reduced to achieve refrigeration. 스털링 냉동 기계 has the advantages of compact structure, wide operating temperature range, fast start-up, high efficiency, simple operation, etc. It is widely used in space exploration, precision guidance, infrared reconnaissance and other fields.

검출기, 인듐 안티모노이드 검출기, 양자 웰 검출기, class II 초격자 검출기 및 양자 점 검출기. Among them, the 

3.2 Uncooled 적외선 검출기 % 3a

이후 1930, 냉각 검출기 가지고 지배적 개발 의 적외선 검출기. 그러나, the 극저온 냉각 필수 for