Semiconductor color image sensor responsive at shorter...

Details Semiconductor color image sensor responsive at shorter... Semiconductor color image sensor responsive at shorter...

2007-08-13

2010-11-09

Henn, Timothy J (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C250S581000

Reexamination Certificate

active

07830434

ABSTRACT:
A semiconductor color image sensor comprises: an array of semiconductor photo-sensors (CMOS or CCD) and a color filter array comprising an array of red, green and blue filter elements in which each filter element is associated with a respective one of the photo-sensors. The sensor further comprises a phosphor (photo-luminescent) material associated with each of the blue filter elements and configured to absorb blue light and re-emit light of a longer wavelength range which is then incident on the photo-sensor associated with the blue filter element. Preferably the phosphor material is selected such that light of the longer wavelength range substantially matches the spectral response of the photo-sensor. The image sensor can further comprise an array of micro-lenses for focusing light onto the photo-sensors of the image sensor, wherein each micro-lens is associated with a respective one of the photo-sensors.

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