Patent ID: 9506628
Filing Date: 2016-11-29
CPC Classification: F21V,F21Y

Claim Text:
1. A lighting device, comprising: a housing enclosing one or more interior volumes; the housing comprising; a forward housing element with a forward opening having a first diameter and an aft opening having a second diameter that is larger than the first diameter; a transparent, pressure-bearing window positioned inside the forward housing, and having a diameter that is larger than the first diameter and smaller than the second diameter; a water-tight seal disposed between the window and a surface of the forward housing; a window support structure positioned in the forward housing behind a portion of the window; a semiconductor lighting element positioned in the forward housing behind the window; a sequestering agent and/or a browning agent destroyer disposed behind the window; and a graphite material configured to seal a volume including the semiconductor lighting element from a second volume of the housing; one or more electronic circuit elements disposed in the one or more interior volumes; and a selectively permeable barrier element disposed in the housing having a first area exposed to one of the interior volumes and a second area exposed to a gas or liquid volume exterior to the housing to allow diffusion of browning contaminants from the one of the interior volumes to the gas or liquid volume exterior to the housing.