F - Mech Eng,Light,Heat,Weapons – 21 – V
Patent
F - Mech Eng,Light,Heat,Weapons
21
V
F21V 7/22 (2006.01) C03C 17/36 (2006.01) C23C 8/10 (2006.01) G02B 1/10 (2006.01)
Patent
CA 2184325
Reflector having a composite reflectivity enhancing layer as reflecting surface layer on a reflector body where the said composite has a sandwich structure with an aluminium layer facing the reflector body, an outer layer, the HI-layer, with a refractive index n2 facing the radiation to be reflected, and an intermediate aluminium oxide layer, the LI-layer, with a refractive index n1 which is smaller than n2 The LI-layer is a transparent and pore-free barrier layer produced by anodic oxidation of the aluminium layer and having a dielectric constant .epsilon.1 of 6 to 10.5 at 20 °C and the optical layer thickness dopt,1 of the LI-layer and dopt,2 of the HI- layer are such that dppt,i = dini = li.lambda./4 10 nm, i = 1, 2 where d1 represents the thickness of the LI-layer in nm, d2 the thickness of the HI-layer in nm, .lambda. the average wave length in nm of the light striking the reflector surface and l1, l2, uneven natural numbers. The reflectors are particularly suitable as reflectors for infrared radiation or for lamps for technical lighting purposes, especially for daylight lighting purposes.
Alcan Technology & Management Ag
Alusuisse Technology & Management Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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