Space-efficient light collector

Details Space-efficient light collector Space-efficient light collector

1994-03-04

1995-06-27

Lazarus, Ira S.

Illumination

Revolving

362304, 362346, 362348, F21V 708

Patent

active

054285097

ABSTRACT:
A light collector which includes a light pipe having a face with a center and a diameter. The light pipe also has a predetermined acceptance angle. The light source is located a predetermined distance from the light pipe positioned on a line perpendicular to the center of the face of the light pipe. A concave surface defined by a plurality of ellipsoidal sections having a common first focus and a common second focus is used to reflect light from the light source to the light pipe. The ellipsoidal section have decreasing eccentricities with increasing object angle along the concave surface. The light source is located substantially at the first focus of the plurality of ellipsoidal sections and the center of the face of the light pipe is located substantially at the second focus. The surface has an eccentricity such that light rays emitted from the light source reflected by the surface to the light pipe do not exceed the acceptance angle of the light pipe.

REFERENCES:
patent: 3720822 (1973-03-01), Rochester et al.
patent: 3784778 (1974-01-01), McPherson et al.
patent: 4035631 (1977-07-01), Day, Jr.
patent: 4056090 (1977-11-01), Henriques et al.
patent: 4056094 (1977-11-01), Rosenberg
patent: 4120282 (1978-10-01), Espy
patent: 4151005 (1979-04-01), Strebkov et al.
patent: 4203672 (1980-05-01), Smith, Jr.
patent: 4218727 (1980-08-01), Shemitz et al.
patent: 4233493 (1980-11-01), Nath
patent: 4234354 (1980-11-01), Lidorenko et al.
patent: 4249514 (1981-02-01), Jones
patent: 4253895 (1981-03-01), Chenault
patent: 4408266 (1983-10-01), Sclippa
patent: 4417300 (1983-11-01), Bodmer
patent: 4419984 (1983-12-01), McIntire
patent: 4420261 (1983-12-01), Barlow et al.
patent: 4897771 (1990-01-01), Barker
patent: 4954715 (1990-09-01), Zold
patent: 5117243 (1992-05-01), Swanberg et al.
patent: 5121988 (1992-06-01), Blesener et al.
patent: 5170448 (1992-12-01), Ackley et al.
patent: 5196957 (1993-03-01), Brueggemann
patent: 5224111 (1993-06-01), Stilwell, Jr. et al.
patent: 5247383 (1993-09-01), Bruggemann
patent: 5317484 (1994-05-01), Davenport et al.

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