High dynamic range imaging system

• Main Authors: CHEN XINHUA, CHO CHUL-SEUNG, SONG LINGLING
• Format: Patent
• Language: Chinese; English
• Published: 06.01.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The utility model relates to a high dynamic range imaging system which comprises a convergent lens, a slit, a light splitting system, a beam splitter, an image sensor, a processing module, a digital micromirror DMD, a light combining system and a detector. Light enters the beam splitter after being split by the light splitting system, an output detection light beam enters the image sensor, and the processing module generates a modulation template to act on the DMD according to the intensity of spectral information of a target scene; the other imaging light beam output by the beam splitter enters a digital micromirror DMD, and the modulation template attenuates the light in a supersaturation area by controlling the overturning of the digital micromirror DMD and controlling the residence time of the light with different spectral intensities; the modulated light beams are subjected to light combination through the light combination system, a scene with a high dynamic range is imaged on the detector, a panchromat