Lighting system with an adjustable illuminated area

Details Lighting system with an adjustable illuminated area Lighting system with an adjustable illuminated area

2008-10-23

2010-12-07

Lee, Jong-Suk (Department: 2885)

Illumination

Light modifier

Refractor

C362S308000, C362S277000, C362S280000

Reexamination Certificate

active

07845834

ABSTRACT:
The present invention discloses a lighting system with an adjustable illuminated area. The lighting system comprises a light source for outputting a light, a first refractive optical element and a second refractive optical element. The first and second refractive optical elements have continuous curvature. The first refractive optical element is movable along a first direction, while the second refractive optical element is movable along a second direction. The light passes through the first refractive optical element and the second refractive optical element to form an illuminated area. The shape and the size of the illuminated area are adjusted when the relative position of the first refractive optical element and the second refractive optical element is adjusted.

REFERENCES:
patent: 3894227 (1975-07-01), Pitkjaan et al.
patent: 4345303 (1982-08-01), Gerard et al.
patent: 5068768 (1991-11-01), Kobayashi
patent: 5555492 (1996-09-01), Feger

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