Anti-reflective coatings for light bulbs

摘要

A light bulb having anti-reflective coatings on an inner surface and/or an outer surface of the shell of the light bulb. The anti-reflective coatings reduce light loss due to reflections at the interfaces between the interior of the bulb and the shell and between the shell and the exterior of the bulb. The light source may be either incandescent, fluorescent or LED.

主权项

1. An LED bulb comprising:
one or more LEDs; a shell surrounding said one or more LEDs, wherein the shell has a shell index of refraction; a liquid inside the shell, the liquid in contact with the one or more LEDs and the shell; an anti-reflective coating on an inner surface of the shell, wherein the anti-reflective coating has an inner surface index of refraction, and wherein the shell index of refraction and the inner surface index of refraction in combination matches an index of refraction of the liquid in the visible light spectrum.