US 9,812,314 B2
Lamp
Jens Burmeister, Eberbach (DE); and Gerhard Schwarz, Schönbrunn (DE)
Assigned to EATON PROTECTION SYSTEMS IP GMBH & CO. KG, Schonefeld (DE)
Appl. No. 14/782,295
Filed by EATON PROTECTION SYSTEMS IP GMBH & CO. KG, Shönefeld (DE)
PCT Filed Apr. 4, 2014, PCT No. PCT/EP2014/000904
§ 371(c)(1), (2) Date Oct. 2, 2015,
PCT Pub. No. WO2014/161670, PCT Pub. Date Oct. 9, 2014.
Claims priority of application No. 10 2013 005 942 (DE), filed on Apr. 5, 2013.
Prior Publication US 2016/0027634 A1, Jan. 28, 2016
Int. Cl. H01J 65/04 (2006.01); H01J 61/30 (2006.01); F21V 7/00 (2006.01)
CPC H01J 65/044 (2013.01) [F21V 7/00 (2013.01); H01J 61/30 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lamp comprising a light source that can be excited by microwaves to provide illumination and a housing surrounding the light source, said housing having at least one light exit opening, characterized in that the light exit opening has associated therewith a labyrinth structure acting as a microwave shield, said labyrinth structure being configured as a labyrinth panel comprising a plurality of labyrinth passages which extend at an oblique angle relative to the light exit direction, wherein light beams emitted by the light source travel through a housing interior, the labyrinth structure, and the light exit opening, wherein the plurality of labyrinth passages has a length that varies between the housing interior and the light exit opening.