Title:
CONCENTRATING AND COLLECTING OPTICAL SYSTEM USING CONCAVE TOROIDAL REFLECTORS
Document Type and Number:
WIPO Patent Application WO1994003759
Kind Code:
A3
Abstract:
An electromagnetic radiation source, such as an arc lamp, is located at a point displaced from the optical axis of a concave toroidal reflecting surface. The concave primary reflector focuses the radiation from the source at an off-axis image point that is displaced from the optical axis. The use of a toroidal reflecting surface enhances the collection efficiency into a small target, such as an optical fiber, relative to a spherical reflecting surface by substantially reducing aberrations caused by the off-axis geometry. A second concave reflector is placed opposite to the first reflector to enhance further the total flux collected by a small target.
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Inventors:
BAKER GLENN (US)
STROBL KARLHEINZ (US)
BRENNER DOUGLAS (US)
FISCHER ROBERT (US)
PICCIONI ROBERT (US)
THOMAS MICHAEL (US)
STROBL KARLHEINZ (US)
BRENNER DOUGLAS (US)
FISCHER ROBERT (US)
PICCIONI ROBERT (US)
THOMAS MICHAEL (US)
Application Number:
PCT/US1993/007124
Publication Date:
April 28, 1994
Filing Date:
July 29, 1993
Export Citation:
Assignee:
COGENT LIGHT TECH (US)
International Classes:
F21V7/09; F21V7/00; F21V8/00; F21V14/00; G02B17/06; (IPC1-7): F21V7/00
Foreign References:
| US4757431A | 1988-07-12 | |||
| US4947305A | 1990-08-07 | |||
| US4921338A | 1990-05-01 | |||
| US4706168A | 1987-11-10 | |||
| US4241390A | 1980-12-23 | |||
| US4151582A | 1979-04-24 | |||
| US2628533A | 1953-02-17 | |||
| SU1254405A1 | 1986-08-30 |
Other References:
Journal of the Optical Society of America, (Block Associates, Inc.), Volume 55, No. 2, dated February 1965, "Configuration for a Large Light Collector".
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