Patent ID: 6705744
Filing Date: 2004-03-16
Classification: F21K,F21S,F21V,F21W,F21Y,H05B,Y02B,Y10S

Abstract:
A method for calculating the illumination intensity on a target surface provided by a plurality of light sources disposed in one location above the target surface, each light source providing a cone of light where the axis of the cone has the highest light intensity and the boundary of the cone represents a lesser percentage of the wavelength radiation intensity from the center, comprising:a) subdividing the target surface into grids; b) for each grid, calculating the light intensity provided by each light source by taking the cross product of a location vector represented by a line connecting the light source and the grid, and an aiming vector represented by the cone axis; c) calculating the angle between the location vector and the aiming vector; d) if the angle is less than one-half the cone angle, calculating the primary lighting intensity at the grid; e) plotting the total light intensity at each grid.