Ring Light collector

Details Ring Light collector Ring Light collector

1994-03-30

1995-12-12

Husar, Stephen F.

Illumination

Revolving

362 26, 385901, E21V 704

Patent

active

054755719

ABSTRACT:
A ring light collector having a light source with a plurality of light pipes is located in a fixed relation with the light source. Each light pipe has a face which collectively substantially form a ring having a predetermined width between an inner diameter and an outer diameter. A concave reflecting surface having an axis of symmetry is fixed relative to the light source and plurality of light pipes. The concave reflecting surface extends in a rotated ellipsoidal fashion and is defined by the outermost surface of an ellipsoid having a major axis forming a predetermined angle with the axis of symmetry. The major axis of the ellipsoid is rotated about the axis of symmetry. The first focal point of the ellipsoid is located a predetermined distance from said axis of symmetry and a second focal point is located substantially between the outer diameter and inner diameter of the ring. The light source is located substantially at the first focal point. The light reflected from the concave reflecting surface forms a ring on the faces of the light pipes.

REFERENCES:
patent: 3278739 (1966-10-01), Royka et al.
patent: 3638008 (1972-01-01), Keller et al.
patent: 3786243 (1974-01-01), Elzig et al.
patent: 4735495 (1988-04-01), Henkes
patent: 4883333 (1989-11-01), Yanez
patent: 4897771 (1990-01-01), Parker
patent: 5184883 (1993-02-01), Finch et al.
patent: 5222793 (1993-06-01), Davenport et al.
patent: 5317484 (1994-05-01), Davenport et al.
patent: 5321586 (1994-06-01), Hege et al.

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