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. 07, 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 method of laser illumination with reduced speckling for in optical microscopy, machine vision systems with laser illumination, fine optical metrology, etc. The method comprises forming a net of planar ridge waveguides into an arbitrary configuration and providing them with a plurality of holograms having 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 the holograms on the surface of the object or in a space at a distance from the planar ridge waveguide. Speckling is reduced by locating at least a part or all of the holograms at distances from each other that are equal to or greater than the coherence length. The geometry and organization of the holographic elements allows controlling position, focusing and defocusing of the beam.