公开(公告)号：US09903757B1

公开(公告)日：2018-02-27

申请号：US15275172

申请日：2016-09-23

Applicant: HRL Laboratories, LLC

Inventor： Daniel Yap ,  Brian Neff

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/42 ,  G01N21/39 ,  G01N21/35 ,  G01N21/94

CPC classification number: G01J3/108 ,  G01J3/0208 ,  G01J3/42 ,  G01J2003/102 ,  G01N21/35 ,  G01N21/39 ,  G01N21/94 ,  G01N2021/399 ,  G01N2201/067

Abstract: A sensor includes a plurality of transmitter units, a photodetector, and an optical system coupled to the plurality of transmitter units and the photodetector. Each of the transmitter units simultaneously transmits a light beam having a plurality of wavelengths, the optical system directs the light beam from each of the transmitter units onto a same illuminated spot on a probed surface, and the optical system collects light from the same illuminated spot and directs the light to the photodetector.