MULTI-LAYER COLOR FILTER FOR LOW COLOR ERROR AND HIGH SNR

摘要

Embodiments are described of a color filter array including a plurality of tiled minimal repeating units. Each minimal repeating unit includes an invisible-wavelength filter layer including a plurality of filters and a visible-wavelength filter layer positioned on the invisible-wavelength filter layer and having a plurality of filters such that each filter from the visible-wavelength layer is optically coupled to a corresponding filter in the invisible-wavelength layer.

主权项

1. A color filter array comprising:
a plurality of tiled minimal repeating units, each minimal repeating unit comprising:
an invisible-wavelength filter layer including a plurality of filters, the plurality of filters in the invisible-wavelength filter layer including at least three filters having a first invisible photoresponse and a filter having a second invisible photoresponse; anda visible-wavelength filter layer positioned on the invisible-wavelength filter layer and having a plurality of filters such that each filter from the visible-wavelength layer is optically coupled to a corresponding filter in the invisible-wavelength layer, wherein the plurality of filters in the visible-wavelength filter layer includes a filter having a first visible photoresponse, a pair of filters having a second visible photoresponse, and a filter having a third visible photoresponse; wherein the individual filter having the second invisible photoresponse is optically coupled to one of the pair individual filters with the second visible photoresponse, and wherein the filters with the first and third visible photoresponses and the other filter of the pair of filters with the second visible photoresponse are optically coupled to filters with the first invisible photoresponse.