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:
Jan. 14, 2020
Filed:
Dec. 29, 2011
Dmitry Voloschenko, Torrance, CA (US);
Fedor Dimov, Redondo Bech, CA (US);
Kevin Yu, Temple City, CA (US);
Engin Arik, Moorpark, CA (US);
Dmitry Voloschenko, Torrance, CA (US);
Fedor Dimov, Redondo Bech, CA (US);
Kevin Yu, Temple City, CA (US);
Engin Arik, Moorpark, CA (US);
Luminit LLC., Torrance, CA (US);
Abstract
A substrate-guided holographic diffuser has a light-guide section configured to in-couple light and transmit the light within itself via total internal reflection. It can also have a brightness enhancement section that recycles non-diffracted light within the light-guide section. A hologram section that receives light from the light-guide section has a holographic structure defining acceptance conditions and is positioned relative to the internally reflected light such that the internally reflected light meets the acceptance conditions of the holographic structure. The internally reflected light is out-coupled by the holographic structure as a projected image of light scattered from a diffuser.