Title:
LOW COST FOCUSSING SYSTEM GIVING HIGH CONCENTRATIONS
Document Type and Number:
WIPO Patent Application WO/2011/154685
Kind Code:
A3
Abstract:
There is disclosed a focussing system for concentrating radiation onto a target surface, comprising: a first reflective element forming part of the surface of a cone axially aligned along a first alignment axis, the first reflective element being positioned such that when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis, the planar radiation is focussed towards a first focus lying along the first alignment axis, wherein said part of the surface of a cone is contained within a sector having an included angle of less than 180 degrees; and a second reflective element having a reflective surface that at all points is flat in a direction parallel to a single reference direction, the second reflective element being positioned between the first reflective element and the first focus such that, when planar radiation is incident on the first reflective element in a direction parallel to the first alignment axis, radiation reflected from the first reflective element onto the second reflective element is focussed towards a second focus. A multiple target focussing system comprising a plurality of focussing systems, solar powered systems using focussing systems, kits, telescopes, defocussing light sources, and methods for assembling focussing systems are also disclosed.
Inventors:
BAILEY PAUL BRIAN (GB)
DADD MICHAEL WILLIAM (GB)
STONE CHARLES RICHARD (GB)
JELLEY NICHOLAS ALFRED (GB)
DADD MICHAEL WILLIAM (GB)
STONE CHARLES RICHARD (GB)
JELLEY NICHOLAS ALFRED (GB)
Application Number:
PCT/GB2011/000836
Publication Date:
February 02, 2012
Filing Date:
June 01, 2011
Export Citation:
Assignee:
ISIS INNOVATIONS LTD (GB)
BAILEY PAUL BRIAN (GB)
DADD MICHAEL WILLIAM (GB)
STONE CHARLES RICHARD (GB)
JELLEY NICHOLAS ALFRED (GB)
BAILEY PAUL BRIAN (GB)
DADD MICHAEL WILLIAM (GB)
STONE CHARLES RICHARD (GB)
JELLEY NICHOLAS ALFRED (GB)
International Classes:
G02B17/06; F24S23/70; F24S23/75; F24S23/77; F24S50/20
Foreign References:
| US2252246A | 1941-08-12 | |||
| DE19602457A1 | 1997-07-31 |
Other References:
SANAD M S A ET AL: "Parabolic cylindrical surfaces employed as line sources and their use for illuminating conical reflectors", CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING/REVUE CANADIENNE DE GENIE ELECTRIQUE AND INFORMATIQUE, ENGINEERING, USA, vol. 15, no. 1, 1 February 1990 (1990-02-01), pages 9 - 15, XP008142712, ISSN: 0840-8688
Attorney, Agent or Firm:
FORSYTHE, D. (14 South SquareGray's Inn, London WC1R 5JJ, GB)
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