Remote lumiphor solid state lighting devices with enhanced light extraction

摘要

Solid state light emitting devices include lumiphor elements that are spatially segregated from electrically activated solid state emitters with an intermediately arranged optical element (including but not limited to a dichroic filter). Curved or faceted optical elements, and curved or faceted reflectors, may be employed. Multiple solid state emitters may be arranged in multiple reflector cups or recesses. Characteristics of optical elements and/or lumiphor elements of such devices may be varied with respect to angular position.

主权项

1. A lighting device comprising:
at least one electrically activated solid state emitter; at least one lumiphoric material spatially segregated from the at least one electrically activated solid state emitter, and arranged to receive at least a portion of emissions from the at least one electrically activated solid state emitter and responsively generate lumiphor emissions; at least one optical element, selected from the group consisting of optical filters and optical reflectors, arranged between the at least one electrically activated solid state emitter and the at least one lumiphoric material, wherein at least a portion of the at least one optical element is curved or faceted; and at least one reflector element comprising at least one recess, trough, or cup, and arranged to reflect emissions from the at least one electrically activated solid state emitter toward the at least one optical element; wherein the at least one optical element is configured to enable passage of a first wavelength range, at least a portion of emissions of the at least one electrically activated solid state emitter being within the first wavelength range; wherein the at least one optical element is configured to filter or reflect at least a portion of a second wavelength range, at least a portion of the lumiphor emissions being within the second wavelength range, the at least one optical element thereby preventing the at least a portion of the lumiphor emissions from being transmitted toward the at least one electrically activated solid state emitter; and wherein the first wavelength range differs from the second wavelength range.