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:
Sep. 04, 2007
Filed:
Jan. 13, 2004
Applicant:
Alain Le Marchand, Le Mesnil Saint Denis, FR;
Inventor:
Alain Le Marchand, Le Mesnil Saint Denis, FR;
Assignee:
Jobin Yvon S.A.S., Longjumeau, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method and a device for obtaining a low-noise optical signal. According to the method, a luminous beam is injected through two apertures and after detection respectively a basic optical signal () and a corrective optical signal () are generated. Both optical signals obtained () are subtracted, so that a resulting optical signal is generated, forming the low-noise optical signal. The apertures are preferably two slits of a spectroscope, the optical signals being expressible relative to the wavelength.