Lighting device

Details Lighting device Lighting device

2009-08-13

2011-12-20

Husar, Stephen F (Department: 2875)

Illumination

Light source and modifier

Adjustable or repositionable modifier

C362S326000, C362S331000, C362S332000, C362S337000, C362S339000

Reexamination Certificate

active

08079734

ABSTRACT:
A lighting device includes a light source, first and second beam-directing prism elements, and a transmission device. The light source emits a light beam. The first beam-directing prism element is arranged in a first direction. The second beam-directing prism element is arranged in a second direction and partially overlapped with the first beam-directing prism element. When the light beam passes through different regions of the first and second beam-directing prism elements, different bending angles are resulted. The transmission device is connected to the first and second beam-directing prism elements for driving movement of the first beam-directing prism element in the first direction and movement of the second beam-directing prism element in the second direction. Accordingly, the light beam emitted by the light source simultaneously passes through one of the regions of the first beam-directing prism element and one of the regions of the second beam-directing prism element.

REFERENCES:
patent: 5191485 (1993-03-01), Kahle
patent: 7338187 (2008-03-01), Li
patent: 7354179 (2008-04-01), Huang et al.
patent: 7845834 (2010-12-01), Hou
patent: 2002/0085276 (2002-07-01), Tanitsu et al.

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