SOLID STATE LIGHTING DEVICE WITH VIRTUAL FILAMENT(S)

摘要

Lighting systems and devices include a light-transmissive tube and a light source assembly. The light-transmissive tube defines a cavity that extends along a longitudinal axis, at least a portion of the tube having an inner structured surface facing the cavity, and an outer structured surface facing away from the cavity. The light source assembly is disposed to inject light into the cavity, and includes one or more discrete light sources such as LED sources. The inner and outer structured surfaces of the tube are configured to direct a first portion of the injected light out of the tube through the outer structured surface and to direct a second portion of the injected light back into the cavity, such that a virtual filament, or pattern of virtual filaments, appears in the tube.

主权项

1. A lighting device, comprising:
a light-transmissive tube defining a cavity extending along a longitudinal axis, at least a portion of the tube comprising an inner structured surface facing the cavity, and an outer structured surface facing away from the cavity; and a light source assembly disposed to inject light into the cavity, the light source assembly including one or more discrete LED sources; wherein the inner and outer structured surfaces are configured to direct a first portion of the injected light out of the tube through the outer structured surface and to direct a second portion of the injected light back into the cavity, such that a virtual filament appears in the tube.