Optical transformation device

Details Optical transformation device Optical transformation device

2011-08-02

2011-08-02

Tso, Laura (Department: 2875)

Illumination

Light source and modifier

Including translucent or transparent modifier

C362S800000, C362S431000, C362S327000, C362S335000

Reexamination Certificate

active

07988338

ABSTRACT:
The present invention relates to an optical transformation device, and more particularly to an optical transformation device able to transform a projected light beam from a spot light source to form rectangular projection surfaces, which primarily includes a refracting body composed of an emergent surface structured from a combination of a plurality of optical surfaces and an incident surface configured as a concave spherical surface. Two reflecting surfaces located at two sides of the meridian of the emergent surface enable the luminous flux of incoming light to completely impinge upon the refracting body, and the interactive effect from the combined optical surfaces transforms the light shape of a light beam from a spot light source, and is projected to produce an almost rectangular shaped illumination projection surface.

REFERENCES:
patent: 6050707 (2000-04-01), Kondo et al.
patent: 7104672 (2006-09-01), Zhang
patent: 7591568 (2009-09-01), Park et al.
patent: 7674018 (2010-03-01), Holder et al.
patent: 7857497 (2010-12-01), Koike et al.
patent: 2002/0080615 (2002-06-01), Marshall et al.

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