Light-collimating system

Details Light-collimating system Light-collimating system

2006-10-31

2006-10-31

Cariaso, Alan (Department: 2875)

Illumination

Light source and modifier

Adjustable or repositionable modifier

C362S283000, C362S284000, C362S324000, C362S325000, C362S342000

Reexamination Certificate

active

07128443

ABSTRACT:
A light-collimating system for collimating light from a light source has a plurality of elements (2, 2′, . . . ), each element including at least a first wall (3, 3′, . . . ) and at least a second wall (4, 4′, . . . ). The first (3) and second wall (4′) of adjacent elements are spaced with respect to each other at a side of the light-collimating system facing the light source, the spacing defining an aperture window (5, 5′, . . . ) for admitting light into the light-collimating system. The first and second wall of said adjacent elements form a wedge-shaped structure widening in a direction facing away from the light source. The first and the second wall are provided with a specular reflecting surface at a side facing the wedge-shaped structure. According to the invention, the wedge angle (w of the first and second wall with respect to the normal on the aperture window are adjustable for enabling adjustable collimation.

REFERENCES:
patent: 1326393 (1919-12-01), D'Humy
patent: 1413439 (1922-04-01), Wempner
patent: 2321008 (1943-06-01), Cantor
patent: 2387816 (1945-10-01), Wagner
patent: 4602321 (1986-07-01), Bornhorst
patent: 5003445 (1991-03-01), Burn et al.
patent: 6076943 (2000-06-01), Lassovsky
patent: WO 9012245 (1990-10-01), None
patent: WO9736131 (1997-10-01), None

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