BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of a system for designing a free form reflector, in accordance with a preferred embodiment;
FIG. 2 is a flowchart of a preferred method for designing a free form reflector, by implementing the system of FIG. 1;
FIG. 3 is a schematic diagram illustrating a reflector profile of the free form reflector in polar coordinates, in accordance with the preferred embodiment;
FIG. 4 shows an ERM reflector profile in YZ plane at θT=−0.513;
FIG. 5 shows an illuminance distribution of the ERM reflector at θT=−0.513;
FIG. 6 shows a DE reflector profile in YZ plane at θT=−0.513;
FIG. 7 shows an illuminance distribution of the DE reflector at θT=−0.513;
FIG. 8 shows a deviation of the ERM reflector and the DE reflector from a true V-trough within −0.513 ≦θ≦0.513;
FIG. 9 shows a vertical slice of the ERM reflector and the DE reflector, which produce uniform illuminance distributions with −0.513≦θ≦0.513;
FIG. 10 shows an ERM reflector profile in YZ plane at θT=−0.733;
FIG. 11 shows an illuminance distribution of the ERM reflector at θT=−0.733;
FIG. 12 shows an DE reflector profile in YZ plane at θT=−0.733;
FIG. 13 shows an illuminance distribution of the DE reflector at θT=−0.733;
FIG. 14 shows a deviation of the ERM reflector and the DE reflector from a true V-trough within −0.733≦θ≦0.733;
FIG. 15 shows a vertical slice of the ERM reflector and the DE reflector, which produce uniform illuminance distributions with −0.733≦θ≦0.733;
FIG. 16 shows an NURBS reflector profile in YZ plane, which produces a concentrated illuminance distribution;
FIG. 17 shows a deviation of the NURBS reflector profile from an ellipse; and
FIG. 18 shows a vertical slice of the relative illuminance distribution produced by the NURBS reflector.
Patent Application
20070219760
