Viewing angle colour sensitive lighting accessory

Details Viewing angle colour sensitive lighting accessory Viewing angle colour sensitive lighting accessory

G - Physics

02

B

88/99

G02B 5/28 (2006.01) F21S 8/00 (2006.01) F21V 9/08 (2006.01)

Patent

CA 1243867

TITLE A VIEWING ANGLE COLOUR SENSITIVE LIGHTING ACCESSORY INVENTORS Jerzy A. Dobrowolski Lorne A. Whitehead ABSTRACT OF DISCLOSURE A viewing angle colour 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 wave- length 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 colouration 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.

465387

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