Flat panel lens

Details Flat panel lens Flat panel lens

2008-09-03

2010-02-09

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

With reflecting element

C359S727000

Reexamination Certificate

active

07660047

ABSTRACT:
A flat panel lens system as a tapered light guide that has minimal or no margin for fan out. The tapered light guide includes a thin end, and a thick end of which is a bevelled mirror or an optical equivalent. Light is injected into the thin end and the mirror is such that rays injected through a point at the thin end emerge collimated from one of the light guide surfaces, and that collimated rays injected at an appropriate angle through one of the light guide surfaces emerge from a point at the thin end. Bragg gratings can be utilized for color implementations as well. The tapered light guide can be fabricated as a single piece, by extrusion, injection molding, or the combination/variation of extrusion and injection molding, as well as other commonly known techniques.

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Chou, et al., “Imaging and Chromatic Behavior Analysis of a Wedge-Plate Display”, Retrieved at<< http://www.di.nctu.edu.tw/2006TDC/papers/Flexible/06-012.doc>>, pp. 4.
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