Patent ID: 11946633
Assignee: SEESCAN, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A lighting apparatus for high pressure underwater use, comprising:
a non-pressure compensated housing shaped and sized for withstanding ambient exterior pressure at a water depth of approximately 500 feet or more;
a transparent pressure bearing window positioned at a forward end of the non-pressure compensated housing;
a multilayered stack positioned directly behind and in contact with the transparent pressure bearing window, the multilayer stack comprising:
one or more substantially flat spacers of a high compressive strength material;
an electronic circuit element comprising a thermally conductive printed circuit board (PCB) configured and positioned within the housing behind the transparent pressure bearing window; and
a plurality of LEDs mounted on the PCB; and
a water-tight seal between the transparent pressure bearing window and the housing;
wherein the one or more substantially flat spacers have holes for allowing light output from the plurality of LEDs to pass through the spacers and to the transparent pressure bearing window, and wherein the one or more substantially flat spacer bear substantially all of the pressure applied to the transparent pressure bearing window by ambient water on the exterior side of the window.