Wide dynamic photoelectric detection system used for stray light coefficient test through point-source transmission ratio method

The invention relates to a wide dynamic photoelectric detection system used for a stray light coefficient test through a point-source transmission ratio method, and belongs to the field of optical performance test of space optical instruments such as a star sensor and a space optical remotely-sensed imaging camera. The wide dynamic photoelectric detection system can solve the technical problem that an existing detecting device is insufficient in detecting range, and nonlinearity appears in a process of combining photoelectric detectors of different types to test. The wide dynamic photoelectric detection system utilizes three same wide dynamic photoelectric detection devices to separately detect entrance pupil, irradiance on an image surface and background stray light of a space optical system; and a data acquisition computer is used for acquiring data of the photoelectric detection devices through an RS422 interface and calculating a point-source transmission ratio. According to the wide dynamic photoelectric