Patent ID: 7306155

Claim:
An apparatus for minimizing device-to-device variation in a target distance, d, defined by a distance between a target point, P s , and an image sensor point, P p , disposed on a pixel plane of an image sensor, the apparatus comprising: a component frame securing the image sensor, the frame having a proximal portion and a distal portion, said proximal portion closer than said distal portion to the target point P s , said distal portion including an image sensor aperture, and said frame being adapted for receiving the image sensor in the distal portion of said frame; and at least one image sensor plate disposed in the distal portion of said frame, said image sensor plate having a thickness, t p , and defining at least one side of said image sensor aperture at said distal portion of said frame, wherein said image sensor plate is contacted by the image sensor so that the image sensor is benched against said image sensor plate and at least a portion of the image sensor passes through said aperture in said frame, and wherein said image sensor plate thickness t p is tightly controlled so as to minimize device-to-device variation in distances.