Patent ID: 6958464
Filing Date: 2005-10-25
Classification: G02B,H01L

Abstract:
1. An equalization system adopted for use with an imaging system having an array of light detectors, an array of individual light-emitting sources corresponding to respective said light detectors, and an optical system disposed with respect to said array of light-emitting sources so as to illuminate an object with light from said light-emitting sources and image the object on said corresponding light detectors, the equalization system comprising: a power supply adapted to supply to a plurality of light-emitting sources amounts of power that have definite relative magnitudes with respect to one another; a signal conditioning circuit for receiving and digitizing output signals from a respective set of said light detectors so as to produce a respective set of output values, said signal conditioning circuit including a set of amplifiers corresponding to said set of the light detectors which apply gain to said output signals prior to digitization thereof; and an equalizer system for equalizing said respective set of output values for a given amount of optical input power supplied to said set of light detectors, said equalizer system being adapted to equalize said set of output values by adjusting the relative amounts of power applied to said light-emitting sources based on said output values so as to adjust the relative amounts of power applied to said light-emitting sources and to provide correction signals to said amplifiers based on said output values so as to equalize said output values for said given amount of input power, and is further adapted to add to one or more of said output values respective error correction values so as to produce new respective values that are substantially equal for said given amount of input power.