Double confocal fiber optic light collector

Details Double confocal fiber optic light collector Double confocal fiber optic light collector

1994-10-03

1996-05-07

Husar, Stephen F.

Illumination

Revolving

362298, 362299, 362346, F21V 704

Patent

active

055152422

ABSTRACT:
A light collector includes a light source and a first and a second primary elliptical reflector partially surrounding the light source. The first and second primary reflectors have a common focal point at the light source. The first and second primary elliptical mirrors each have an opening in which a first light pipe and a second light pipe are located. Each of the light pipes having a face with a known acceptance angle. Each face is located substantially at the focal point of one of the primary reflectors. The first and second reflectors have an eccentricity sufficient to reflect light from the first and second primary reflectors so that light incident on the face of the light pipes does not exceed the acceptance angle of the light pipe. The first and second secondary elliptical reflectors are located within the opening in the primary mirrors. The first and second reflectors have common focal points with said first and second primary mirrors, respectively. The reflectors have an eccentricity and location by which light reflected from the secondary mirrors does not intersect the light source.

REFERENCES:
patent: 3772506 (1973-11-01), Junginger
patent: 4755918 (1988-07-01), Pristash et al.
patent: 5271077 (1993-12-01), Brockman et al.
patent: 5321586 (1994-06-01), Hege et al.
patent: 5436805 (1995-07-01), Hsu et al.
patent: 5475571 (1995-12-01), Dassanayake

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