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:
Nov. 19, 2013
Filed:
Oct. 21, 2011
Vladmir Yankov, Washington Township, NJ (US);
Alexander Goltsov, Troitsk, RU;
Igor Ivonin, Yubileinyi, RU;
Konstantin Kravtsov, Moscow, RU;
Leonid Velikov, San Carlos, CA (US);
Vladmir Yankov, Washington Township, NJ (US);
Alexander Goltsov, Troitsk, RU;
Igor Ivonin, Yubileinyi, RU;
Konstantin Kravtsov, Moscow, RU;
Leonid Velikov, San Carlos, CA (US);
Ergophos, LLC, San Carlos, CA (US);
Abstract
The invention relates to a light-guide panel for an LCD with a laser backlight. The panel comprises a laser light source and a main ridge waveguide with a plurality of first holograms that change the direction of the laser light that propagates along the main ridge waveguide to the direction perpendicular to the latter. The first holograms are associated with thee light of predetermined wavelengths and are optically connected to respective transverse waveguides that lie in the same plane but are perpendicular to the main ridge waveguide. Each transverse ridge waveguide has a plurality of second holograms designed so that they change the direction of laser light that propagates along the transverse ridge waveguide in the direction at an angle to the plane of the LGP substrate. This angle should be close to 90° and may be obtained in the range of 70° to 85°.