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:
Oct. 14, 2014
Filed:
Jun. 27, 2012
Vladimir Yankov, San Carlos, CA (US);
Igor Ivonin, Yubileinyi, RU;
Alexander Goltsov, Troitsk, RU;
Konstantin Kravtsov, Moscow, RU;
Leonid Velikov, San Carlos, CA (US);
Vladimir Yankov, San Carlos, CA (US);
Igor Ivonin, Yubileinyi, RU;
Alexander Goltsov, Troitsk, RU;
Konstantin Kravtsov, Moscow, RU;
Leonid Velikov, San Carlos, CA (US);
Ergophos, LLC, San Carlos, CA (US);
Abstract
Proposed is a speckle-reduced laser illumination device that may be used in optical microscopy, machine vision systems with laser illumination, fine optical metrology, etc. The device comprises a net of planar ridge waveguides formed into an arbitrary configuration and having a plurality of holograms with holographic elements formed into a predetermined organization defined by the shape of a given light spot or light field which is to be formed by light beams emitted from holograms on the surface of an object or in a space and at a distance from the planar ridge waveguide. Speckling is reduced due to the fact that at least a part or all of the holograms are spaced from each other at distances equal to or greater than the coherence length. The geometry and organization of the holographic elements allow position control of the light spot and beam converging and diverging.