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. 18, 2012
Filed:
Jul. 07, 2008
Bruno Liege, Boulogne, FR;
Regis Tessieres, Paris, FR;
Frederic Guichard, Paris, FR;
Etienne Knauer, Boulogne, FR;
Hoang-phi Nguyen, Paris, FR;
Bruno Liege, Boulogne, FR;
Regis Tessieres, Paris, FR;
Frederic Guichard, Paris, FR;
Etienne Knauer, Boulogne, FR;
Hoang-Phi Nguyen, Paris, FR;
DXO Labs, Boulogne Billancourt, FR;
Abstract
To increase the depth of field of an optical system, an inversion of the chromatism is produced. This accommodates the fact that, in natural light, users prefer, for their photographs, taking long distance shots outdoors, where the illuminant is mostly composed of blue, and short-distance shots indoors, where the illuminant is mostly composed of red. While optical devices naturally focus the blue components at a shorter distance than the red components, which is unfavorable, with an inversion of the chromatism, a focus more in keeping with what is required is restored.