Patent ID: 6828542
Filing Date: 2004-12-07
Classification: G03F

Abstract:
An image sensor unit, for use with a highly precise moveable platform, the image sensor unit comprising:a substrate having a wafer-shaped profile; a sensor array, disposed on the wafer-shaped substrate, the sensor array including: a plurality of sensor cells wherein each sensor cell includes an active area to sense light of a predetermined wavelength that is incident thereon; and a film, disposed over the active areas of the plurality of sensor cells and comprised of a material that impedes passage of light of the predetermined wavelength, wherein the film includes a plurality of apertures which are arranged such that an aperture of the plurality of apertures overlies an active area of a corresponding sensor cell to expose a portion of the active area and wherein light of the predetermined wavelength is capable of being sensed by the portion of the active area that is exposed by the corresponding aperture.