KEYWORDS: Signal to noise ratio, Ultraviolet radiation, Field programmable gate arrays, Microchannel plates, Night vision, Gold, Semiconductors, Light, Power supplies, Lamps
In the field of low-light night vision, EBCMOS (Electron Bombarded Complementary Metal Oxide Semiconductor) has received much attention due to its high-gain, high-resolution, low-noise, etc. The techniques used to test EBCMOS performance are also in urgent need of development. According to the composition of EBCMOS detectors, based on the existing vacuum device and semiconductor device test methods, the SNR testing method of EBCMOS is proposed and the testing system is designed. The Field Programmable Gate Array(FPGA)-based hardware platform is built in the vacuum environment. The CMOS data is read out by programmable logic design. Finally, the SNR is obtained by the MFC host computer. Experiments show that the system can measure accurate SNR parameters.
Solid low-light imaging device is an important part of night vision, which has the advantage of high resolution, high contrast and small size, and it can work 24 hours. A handheld high-resolution low-light camera is proposed based on the characteristics of GSENSE400BSI CMOS image sensor in this paper. The camera includes CMOS driver, image correction, cache, low-light image enhancement and ultra-clear format encoding, implemented on an FPGA-based hardware platform. And the camera structure is optimized designed to realize the handheld operation. Finally, the experiments show that the low-illuminance camera display the details of the target clearly under 10-2 lx illumination, with an effective display resolution of 2048×2048@60fps.
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