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:
Apr. 22, 2008
Filed:
Aug. 09, 2006
Shunpei Kameyama, Tokyo, JP;
Yoshihito Hirano, Tokyo, JP;
Shunpei Kameyama, Tokyo, JP;
Yoshihito Hirano, Tokyo, JP;
Mitsubishi Electrick Corp., Tokyo, JP;
Abstract
A differential absorption lidar includes: a light signal generation unit for generating first, second CW light signals with first, second wavelengths having different absorption coefficients with respect to a target, a light intensity modulation unit for subjecting the first, second CW light signal to intensity modulation with a first, second CW modulation signal having a first, second frequency in a baseband, a radiation unit for multiplexing the first, second CW light signals with the intensity modulated, forming the multiplexed light signals with two wavelengths in a predetermined beam size, and radiating the light signals, a reception unit for directly detecting scattered light from the target and converting the scattered light into an electrical signal, and a signal processing unit for extracting only the first, second frequency components from the electric signal, and detecting the concentration of the target from a difference in an amplitude of time wavelengths between two signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile