Patent ID: 9612002
Date: 2017-04-04
CPC Classifications: F21K,F21V,F21Y

Claim:
1. A LED based lamp, comprising: a concave optical diffuser having a first interior volume and comprising a circular diffuser lip; a concave neodymium-doped glass bulb positioned within the first interior volume and being separate from the concave optical diffuser, the glass bulb having a second interior volume and comprising a circular glass bulb lip; a reflector positioned within the second interior volume; a printed circuit board comprising a plurality of light-emitting diodes (LEDs) configured to emit light, the printed circuit board attached to a bottom portion of the reflector within the second interior volume such that the concave neodymium-doped glass bulb absorbs light when the LEDs are illuminated to induce a depression in a yellow portion of the visible light spectrum; and a heat sink thermally connected to the printed circuit board and to the reflector, wherein the heat sink comprises an annular groove formed in an upper portion that is sized and shaped to seat the entirety of both the circular diffuser lip and the circular glass bulb lip.