专利详情

专利名称	Single photon-counting imaging system and method thereof
申请号	US201214000421	专利类型	US
公开（公告）号	US8723130(B2)	公开（授权）日	2014.05.13
申请（专利权）人	中国科学院空间科学与应用研究中	发明（设计）人	ZHAI GUANGJIE;DU KEMING;WANG CHAO;YU WENKAI
主分类号	G01T1/00	IPC主分类号	G01T1/00
专利有效期	Single photon-counting imaging system and method thereof 至Single photon-counting imaging system and method thereof	法律状态
说明书摘要	A single-photon counting imaging system and method includes an optical filter, first and second lenses, a digital micro-mirror device (DMD) control system, a single-photon counter and a data processing unit. The DMD and first and second lenses convert two-dimensional image data into a one-dimensional sequence. The ultra-weak light is filtered by the optical filter, after which the ultra-weak light image onto the DMD through the first lens. The DMD controls the probability of the photons reflected to the second lens and the second lens controls focusing of the photons. The data processing unit and single-photon counter complete sparse reconstruction. The data processing unit converts the number of photons counted by the single-photon counter within a certain period of time into the probability of detected photon counts. A photon density image is reconstructed by adopting an optimization algorithm based on the measurement matrix on the DMD and the measured value.