Optical element, compound optical element, and illuminating...

Details Optical element, compound optical element, and illuminating... Optical element, compound optical element, and illuminating...

2004-12-17

2008-10-07

Alavi, Ali (Department: 2875)

Illumination

Light source and modifier

Including translucent or transparent modifier

C362S800000

Reexamination Certificate

active

07431480

ABSTRACT:
An optical element of the present invention includes: a primary surface-1whereon diffuse illuminating light radiated by a light source device is incident; a primary surface-2formed in a concave cross-sectional shape when viewed from the primary surface-1, which reflects only illuminating light incident from the primary surface-1; a primary surface-3formed in a convex cross-sectional shape when viewed from the primary surface-1, which reflects only diffuse illuminating light radiated by the light source device; and a primary surface-4which radiates illuminating light incident from the primary surface-1and illuminating light reflected by the primary surface-2. The primary surfaces-1through -4are located at positions such that the light beams reflected by the primary surface-2and the light beams reflected by the primary surface-3are substantially parallel.

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patent: 2002-333656 (2002-11-01), None

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