초록 ▼

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 se

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.

대표청구항 ▼

A viewing angle colour sensitive, lighting accessory, comprising: (a) a sheet member for attachment to a light emitting source and capable of transmitting visible light therefrom fowardly towards an area from which transmitted light is to be perceived, and (b) at least one optical interference multi

A viewing angle colour sensitive, lighting accessory, comprising: (a) a sheet member for attachment to a light emitting source and capable of transmitting visible light therefrom fowardly towards an area from which transmitted light is to be perceived, and (b) at least one optical interference multilayer coating on the sheet member, the material and thickness for each layer of the multilayers being selected so that the coating has different spectral transmittance characteristics at different angles of incidence of the visible light thereto so that light thereof of a particular colouration will be perceived transmitted through the coating at at least one range of viewing angles thereto, (c) an electromagnetic radiation reflector securing the sheet member and extending rearwardly behind the sheet member and around the light emitting source, when the light source is mounted therein, so that visible light will be reflected by the reflector forwardly towards the area from which light is to be perceived, and (d) securing means securing the sheet member to the electromagnetic radiation reflector.