Patent ID: 7466002
Filing Date: 2008-12-16
Classification: H01L

Abstract:
1. A photosensitive device including at least a first illumination direction sensing detector configuration that is used to provide an illumination direction indicating signal that varies as a function of an illumination direction relative to the device of incident radiation falling on the device, the illumination direction sensing detector configuration comprising: a first photodetector on a photodetector substrate, the first photodetector being operable to output a first signal that varies depending on an amount of radiation it receives; a first mask layer fixed proximate to a surface of the first photodetector, the first mask layer including a first-layer hole arranged to receive radiation along an interlayer optical path and transmit radiation to the first photodetector; and a second mask layer fixed proximate to a surface of the first mask layer, the second mask layer including a second-layer hole arranged to receive the incident radiation along its illumination direction relative to the device and transmit the incident radiation to the first-layer hole along the interlayer optical path; wherein: