Lighting devices, an optical component for a lighting device, and methods

摘要

A white-light emitting lighting device comprising one or more light emitting light sources (preferably solid state semiconductor light emitting diodes) that emit off-white light during operation, wherein the off-white light includes a spectral output including at least one spectral component in a first spectral region from about 360 nm to about 475 nm, at least one spectral component in a second spectral region from about 475 nm to about 575 nm, and at least one deficiency in at least one other spectral region, and an optical component that is positioned to receive at least a portion of the off-white light generated by the one or more light sources, the optical component comprising an optical material for converting at least a portion of the off-white light to one or more predetermined wavelengths, at least one of which has a wavelength in at least one deficient spectral region, such that light emitted by the lighting device comprises white light, wherein the optical material comprises quantum confined semiconductor nanoparticles. Also disclosed is an optical component, lighting fixture, a cover plate for a lighting fixture, and methods.

主权项

1. A white-light emitting lighting device comprising an off-white light emitting light source comprises a blue light emitting semiconductor light emitting diode including a luminescent material for converting blue light output to off-white light, wherein the off-white light includes a spectral output including at least one spectral component in a first spectral region from about 400 nm to about 475 nm, at least one spectral component in a second spectral region from about 500 nm to about 550 nm, and at least one deficiency in at least one other spectral region, and an optical component that is positioned to receive at least a portion of the off-white light generated by light source, the optical component comprising an optical material for converting at least a portion of the off-white light to one or more predetermined wavelengths, at least one of which has a wavelength in at least one deficient spectral region, such that white light is emitted by the lighting device, wherein the optical material comprises quantum confined semiconductor nanoparticles, wherein the optical material is fully encapsulated, and wherein the optical material and the optical component are not in direct contact with the off-white light emitting light source.