Lens for reforming light-emitting diode radiation

Details Lens for reforming light-emitting diode radiation Lens for reforming light-emitting diode radiation

2006-12-14

2010-10-05

Doan, Jennifer (Department: 2874)

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

C385S015000, C385S031000, C385S033000

Reexamination Certificate

active

07809237

ABSTRACT:
A lens for reforming radiation from a light-emitting diode having a first convex surface for admitting radiation path from the light-emitting diode that is close to the axis of the diode and a cylindrical surface for admitting radiation that makes a wider angle with the axis of the diode, a conical surface disposed to receive and totally internally reflect radiation admitted by said convex surface and re-radiate it at an angle substantially normal to the axis of the diode and a curved surface for receiving and re-radiating at an angle substantially normal to the axis of the diode radiation admitted by the cylindrical surface.

REFERENCES:
patent: 2908197 (1959-10-01), Wells et al.
patent: 6679621 (2004-01-01), West et al.
patent: 6951415 (2005-10-01), Amano et al.
patent: 7217022 (2007-05-01), Ruffin
patent: 2006/0060867 (2006-03-01), Suehiro
patent: 2007/0114551 (2007-05-01), Kawaguchi et al.

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