Multi-spectral imaging method for ultraweak photon emission and system thereof

US9807317B2 · kind B2 · utility

Assignee

• Center for Space Science and Applied Research, Chinese Academy of Sciences · CN

Inventors

• Guangjie Zhai · Beijing, CN
• Keming Du · Aachen, DE
• Chao Wang · Hubei, CN
• Wenkai Yu · Beijing, CN

Key dates

• Filing date: Apr 23, 2012
• Grant date: Oct 31, 2017
• Expiry date: Mar 6, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/6452
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An ultra-weak light multispectral imaging method and an ultra-weak light multispectral imaging system, which can realize multispectral two-dimensional imaging of an ultra-weak light object by constituting a linear array from single-photon detectors of all response wavelengths and combining it with light-splitting technology. The ultra-weak light multispectral two-dimensional imaging system realizes high-resolution optical modulation by adopting the compressive sensing (CS) theory and the digital light processing (DLP) technology and using a linear array single-photon detector as a detection element; the ultra-weak light multispectral two-dimensional imaging system comprises a light filter, a first lens (1), a DMD control system, a second lens, a spectrophotometer, a linear array single-photon detector consisting of a plurality of single-photon detectors with different response wavelengths, and a central processing unit; and the sensitivity of the system can reach the single-photon level. The invention can be widely applied in the fields of biological self-illumination, medical diagnosis, nondestructive material analysis, astronomical observation, national defense and military, spec…