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. 17, 2013
Filed:
Sep. 13, 2010
George W. Panagotacos, Corona, CA (US);
David G. Pelka, Los Angeles, CA (US);
Blair L Unger, Rochester, NY (US);
George W. Panagotacos, Corona, CA (US);
David G. Pelka, Los Angeles, CA (US);
Blair L Unger, Rochester, NY (US);
Teledyne Reynolds, Inc., Thousand Oaks, CA (US);
Abstract
A collimating waveguide, an optical backlight apparatus, and a method of producing a collimated beam of radiant electromagnetic energy are disclosed. A collimating waveguide comprises an input surface to receive radiant electromagnetic energy from a point source and an output surface to emit an output beam of substantially collimated radiant electromagnetic energy. A first collimating surface of the waveguide receives a beam of the radiant electromagnetic energy entering from the input surface traveling in a first direction and reflects the radiant electromagnetic energy into a substantially collimated beam of radiant electromagnetic energy traveling in a second direction, which is the reverse of the first direction. A second collimating surface of the waveguide receives the substantially collimated beam of radiant electromagnetic energy and to redirect the substantially collimated beam toward the output surface. An optical backlight apparatus comprises a reflective cavity to receive the collimating waveguide and a diffuser located over the output surface of the collimating waveguide.