Patent ID: 9209222
Filing Date: 2015-12-08
Classification: G08B,H01L,H04N

Abstract:
1. A surveillance device comprising: a circuit card assembly disposed in a housing; a lens/imager disposed in a center portion of the circuit card assembly; a plurality of light emitting diodes circumferentially disposed around the lens/imager on the circuit card assembly, each of the plurality of light emitting diodes configured to emit a narrow beam of light; a diffuser disposed in a second housing, the diffuser configured to spread the narrow beams of light; and a Fresnel lens disposed in the second housing, the Fresnel lens configured to spread and redirect the light emitted from the diffuser, the Fresnel lens comprises a center window having a diameter at least as wide as the lens/imager and a perimeter portion comprising a plurality of concentric annular sections, wherein the Fresnel lens is constructed of a material opaque to visible light and transparent to infrared light to conceal an interior of the surveillance device.