公开(公告)号：US20200177822A1

公开(公告)日：2020-06-04

申请号：US16784933

申请日：2020-02-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TATSUSHI OHYAMA ,  MARIKO MIYASHITA

IPC: H04N5/243 ,  G01N21/64 ,  H04N5/225 ,  G06T7/00

Abstract: A light observation apparatus includes: a first photodetector that, upon irradiation of at least part of a physical object with irradiation light, receives first light containing ambient light and at least one selected from the group consisting of reflected light returning from the at least part and fluorescence produced from the at least part, and that outputs a first output signal representing a reception intensity of the first light; a second photodetector that receives second light containing the ambient light and outputs a second output signal representing a reception intensity of the second light; and a signal processing circuit. The signal processing circuit attenuates a first signal component corresponding to the ambient light from the first output signal based on the first output signal and the second output signal.