Irradiance redistribution guide

Details Irradiance redistribution guide Irradiance redistribution guide

1996-07-02

2000-08-01

Spyrou, Cassandra

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359858, 359859, 359850, 359851, 359852, 359853, 385131, 385132, 385133, 385146, G02B 508

Patent

active

060975563

ABSTRACT:
An irradiance redistribution guide (IRG) for providing from a radiation source having a nonuniform irradiation distribution, a predetermined irradiance distribution over a predetermined target area spaced away from the IRG, includes a tubular reflective inner surface disposed between an entrance aperture and an exit aperture. The reflective inner surface has a varying cross-sectional radius. The profile of the cross-sectional radius is defined by a spline function that is uniquely determined by a plurality of knots. The IRG, when used in conjunction with a high-power solar concentrator, is advantageous in materials processing that requires high irradiance level that is uniformly distributed over an area spaced away from the exit aperture by a working distance.

REFERENCES:
patent: 3899672 (1975-08-01), Levi-Setti
patent: 3923381 (1975-12-01), Winston
patent: 4270844 (1981-06-01), Cobble
patent: 5016995 (1991-05-01), Pullen
patent: 5237170 (1993-08-01), Shatz
W.T. Welford & R. Winston; High Collection Nonimaging Optics; Dated 1989; pp. 47-88, 105-111,171-187.

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