Lens for LED light sources

Details Lens for LED light sources Lens for LED light sources

2006-12-26

2006-12-26

Alavi, Ali (Department: 2875)

Illumination

Light modifier

Refractor

C362S305000, C362S329000

Reexamination Certificate

active

07153002

ABSTRACT:
A lens for light emitting diode (LED) light sources which allows light emitted from an LED light source to exit the lens in a direction perpendicular to a vertical center axis of the lens. The lens of the present invention includes an inner space which is defined in a lens body having both a bottom surface and an upper reflective surface, so that light passing through the inner space is partially reflected by total internal reflection on a portion (selective transmission surface, inner reflective surface, inside reflective surface) of a boundary surface between the inner space and the lens body. Thus, light emitted from an LED light source efficiently exits the lens through a side surface. Accordingly, the lens of the present invention is used in efficient display and illumination optical systems.

REFERENCES:
patent: 4478588 (1984-10-01), Lockard
patent: 5897201 (1999-04-01), Simon
patent: 6607286 (2003-08-01), West et al.
patent: 6679621 (2004-01-01), West et al.
patent: 6719442 (2004-04-01), Chen
patent: 7006306 (2006-02-01), Falicoff et al.
patent: 7083313 (2006-08-01), Smith

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