The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Dec. 27, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Masaharu Imaki, Tokyo, JP;
Takayuki Yanagisawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A laser radar device includes: a primary light source configured to combine laser beams having different wavelengths to generate primary light; an optical splitter configured to split the primary light into transmission light and reference light; an optical modulator configured to modulate the transmission light to generate modulated transmission light; an optical transmitter/receiver system configured to emit the modulated transmission light into an external space and receive light scattered or diffused by a target; an optical combiner configured to combine the reference light and the received light to generate an optical beat signal; and a photodetector circuit configured to perform an optical-to-electrical signal conversion of the optical beat signal to generate a received signal; and a signal processing circuit configured to calculate a measurement value related to the target on the basis of the received signal.