Patent ID: 7697031

Claim:
A light system for testing a light sensitive device, comprising: a) a tester, b) a controller, c) a data memory, d) a digital to analog converter (DAC), e) a voltage to current converter, f) a light pulse source, comprising, i) selectable colors comprising red, blue, green and infrared; ii) rapid turn-on and turn-off transition of said light pulse source in the order of magnitude of one microsecond; iii) a plurality of light pulse shapes, comprising a ramp of variable length of time and sinusoidal varying light; iv) a plurality of light intensity; g) a light sensitive device under test (DUT) synchronized with said light pulse source, h) said tester coupled to the controller to control a selection of test data from said data memory to be coupled to said DAC, i) said DAC controlling said voltage to current converter to produce a current to turn on said light pulse source to illuminate said DUT, and, j) said DUT coupling data and control signals to said tester.