| 摘要 |
TITLE A VIEWING ANGLE COLOUR SENSITIVE LIGHTING ACCESSORY INVENTORS Jerzy A. Dobrowolski Lorne A. Whitehead 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 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 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. |
