Illumination – Daylight lighting – Including selected wavelength modifier
Patent
1985-10-11
1987-03-10
Cuchlinski, Jr., William A.
Illumination
Daylight lighting
Including selected wavelength modifier
362 19, 362343, 362327, 362293, F21V 902
Patent
active
046494626
ABSTRACT:
A viewing angle color sensitive lighting accessory comprising a sheet member capable of transmitting light, emitting from a visible light source, forwardly towards an area from which light is to be perceived, at least one optical interference multilayer coating on the sheet member and a reflector secured to the sheet member and extending around the light source. The coating has a transmittance which is a function of wavelength and angle of incidence, and in most instances, of state of polarization of the visible light thereto so that the light perceived from the light source has a particular coloration and, if desired, polarization at a particular viewing angle to the coating. The light source may be, for example, an incandescent light source or a light guide, or any other luminaire. The means securing the sheet member to the reflector preferably removably secures the sheet member thereto.
REFERENCES:
patent: 3294964 (1966-12-01), Schwartz
patent: 4260220 (1981-04-01), Whitehead
patent: 4556928 (1985-12-01), Tysoe
Dobrowolski Jerzy A.
Whitehead Lorne A.
Canadian Patents and Development Limited
Cox D. M.
Cuchlinski Jr. William A.
Lemon Francis W.
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