Photoelectric detection imaging system and method

Abstract

The invention discloses a photoelectric detection imaging system and method and belongs to the technical field of photoelectric detection. The technical problems that in the prior art, an AlGaN-based solar blind focal plane array detector is low in spectral responsivity, detection rate, resolution ratio and evenness are solved. The imaging system comprises an optical system, a signal processing system, a unit detector, a DMD and a DMD control system. The optical system images a detected object on the DMD, the DMD control system controls digital micro-mirrors of the DMD to be turned one by one or turned one by one in a zoning mode. The DMD reflects optical signals to the unit detector, the unit detector converts the optical signals into electric signals, and the signal processing system collects the electric signals one by one and performs AD conversion, storage, integration and recovery on the electric signals. According to the imaging system, the spectral responsivity and the detection rate are higher than the spectral responsivity and the detection rate of an existing AlGaN-based solar blind focal plane array, the resolution ratio is high, evenness is good, and imaging quality is high.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a photoelectric detection imaging system and an imaging method thereof. Background technique [0002] Ozone in the atmospheric stratosphere strongly absorbs the deep ultraviolet band with a wavelength between 280-200nm in the solar background radiation, making the ultraviolet radiation in this band near the earth's surface form a blind zone (called "solar blindness"), which is It creates favorable conditions for efficient and accurate detection of unnatural factors of ultraviolet radiation in a relatively clean background. Therefore, the ultraviolet detection technology for this sun-blind band is favored, especially in military and civilian applications such as guidance, missile early warning, space detection, short-distance secure communication, biochemical weapon analysis, environmental monitoring, flame alarm, biomedical detection, and astronomical ...

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