Patent ID: 8414150

Claim:
An illumination system for creating a field of light with which density, photometric angular distribution, of projected light can be changed, comprising: a. a series of light modules including at least one LED; b. a structural frame of structural rails having electrically insulating elements, within which electrical conductors pass, said structural rails at least partially composed of a heat conductive material; c. a circuit board including a heat conductive substrate having slots disposed about the circuit board, and including at least two electrical contact surfaces located along the slots on said circuit board said LED being mounted to said circuit board, said circuit board further including at least two electrical contact surfaces strategically located along said slots; d. electrically conductive contact screws for electrically connecting the LEDs on said circuit board to the electrical conductors and constructed and arranged to simultaneously provide a thermal transfer from said heat conductive substrate to said structural rails, said screws having a threaded portion of such diameter that they fit within the slots of said circuit board, the heads of said screws having a larger diameter than said slots and making contact with said contact surfaces when said screws are tightened.