Patent ID: 8334656

Claim:
A self-contained, replaceable lighting unit with user-settable output intensity designed for use in a light fixture, the lighting unit comprising: a power supply; at least one light emitting diode (LED); an output intensity adjustment mechanism configured to allow a user to set an output intensity of a plurality of non-zero output intensities generatable by the at least one LED; a controller operably coupled to the power supply, the at least one LED and the output intensity adjustment mechanism, the controller operable to control a supply of electrical power from the power supply to the at least one LED such that the at least one LED illuminates in accordance with the output intensity set by the user; at least one light-concentrating member positioned in substantial registry with the at least one LED and defining at least one receiving recess, the at least one receiving recess receiving the at least one lens of the at least one LED; at least a first printed circuit board supporting at least the controller; a second printed circuit board supporting the at least one LED and being separated from the at least a first printed circuit board, the second printed circuit board defining a wire pass-through aperture and including a set of solder pads; a set of wires electrically connecting the at least a first printed circuit board and the set of solder pads, the set of wires passing through the wire pass-through aperture and being soldered to the solder pads, the solder pads being electrically coupled to the at least one LED; and a non-metallic shield member secured to the second printed circuit board and positioned between the second printed circuit board and the at least one light-concentrating member, the shield member defining a cavity that encloses the set of wires and the set of solder pads.