Optical element and illuminating device

Details Optical element and illuminating device Optical element and illuminating device

2006-12-11

2008-12-02

Husar, Stephen F. (Department: 2875)

Illumination

Light modifier

Refractor

C362S026000, C362S620000, C362S626000

Reexamination Certificate

active

07458704

ABSTRACT:
The present invention provides an optical element and an illuminating device. The optical element includes: an incident surface; and an emitting section formed on an opposite side to the incident surface. The emitting section includes a plurality of protrusions. When each of the plurality of protrusions is projected onto a reference plane perpendicular to the incident surface to form a reference contour, the reference contour is substantially a trapezoid. A height of the reference contour and a height of a triangle formed by extending two legs of the reference contour satisfy a predefined condition.

REFERENCES:
patent: 6347874 (2002-02-01), Boyd et al.
patent: 6578985 (2003-06-01), Seraphim et al.
patent: 7001060 (2006-02-01), Kimura
patent: 7220038 (2007-05-01), Yamashita et al.
patent: 7226197 (2007-06-01), Hayashi et al.

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