Optical: systems and elements – Light interference – Produced by coating or lamina
Patent
1997-03-25
2000-05-16
Spyrou, Cassandra
Optical: systems and elements
Light interference
Produced by coating or lamina
359585, 359839, 250216, G02B 530, B60R 106
Patent
active
060645253
ABSTRACT:
An optical device includes (a) a dichromatic mirror composed of a vitreous substrate having a front surface and a rear surface; and a coating provided on the vitreous substrate composed of a three-layer stack including a semiconductor layer composed of a semiconductor material having a refractive index of more than 3.0, a layer composed of a material having an intermediate refractive index in the range 1.9 to 2.8, and a layer composed of a material having a low refractive index in the range 1.2 to 2.0, wherein the refractive indices of the materials of intermediate and low refractive index differ by at least 0.2, and wherein the dichromatic mirror has a luminous transmittance of at least 20% and a luminous reflectivity of at least 40%; and (b) radiation detecting means positioned on the side of the rear surface of the vitreous substrate. In another embodiment, the optical device includes (a) a dichromatic mirror composed of a vitreous substrate having a front surface and a rear surface; and a coating provided on the vitreous substrate composed of a three-layer stack provided in direct contact with the vitreous substrate and including a semiconductor layer composed of a semiconductor material having a high refractive index, and two other layers composed of respective materials which are different from one another and from the semiconductor layer, one of the two other layers having a refractive index of intermediate value relative to that of the semiconductor material, and another of the two other layers having a refractive index of low value relative to that of the semiconductor material, wherein the dichromatic mirror has a luminous transmittance of at least 20% and a luminous reflectivity of at least 40%; and (b) radiation detecting means positioned on the side of the rear surface of the vitreous substrate.
REFERENCES:
patent: 4499451 (1985-02-01), Suzuki et al.
patent: 4673248 (1987-06-01), Taguchi et al.
patent: 4882565 (1989-11-01), Gallmeyer
patent: 4955705 (1990-09-01), Nakajima et al.
patent: 5007710 (1991-04-01), Nakajima et al.
patent: 5014167 (1991-05-01), Roberts
patent: 5243458 (1993-09-01), Hatano et al.
patent: 5253109 (1993-10-01), O'Farrell et al.
patent: 5270858 (1993-12-01), Dickey
patent: 5341238 (1994-08-01), Trost et al.
patent: 5436741 (1995-07-01), Crandall
patent: 5528422 (1996-06-01), Roberts
patent: 5535056 (1996-07-01), Caskey et al.
patent: 5537246 (1996-07-01), Sulzbach et al.
patent: 5575552 (1996-11-01), Faloon et al.
patent: 5587699 (1996-12-01), Faloon et al.
patent: 5608220 (1997-03-01), Weiser et al.
patent: 5619375 (1997-04-01), Roberts
patent: 5745291 (1998-04-01), Jenkinson
patent: 5751484 (1998-05-01), Goodman et al.
patent: 5788357 (1998-08-01), Muth et al.
Glaverbel
Jr. John Juba
Spencer George H.
Spyrou Cassandra
Wells Ashley J.
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