Patent ID: 8934034
Filing Date: 2015-01-13
Classification: H01L,H04N

Abstract:
1. A color filter array, the array comprising: a plurality of primary filters and a plurality of secondary filters, wherein each of the plurality of primary filters and each of the plurality of secondary filters has a particular spectral response and wherein each of the plurality of primary filters and each of the plurality of secondary filters is formed on a corresponding pixel of a plurality of pixels; wherein each of the plurality of primary filters and each of the plurality of secondary filters enhances an attribute of image quality and wherein the information obtained using the plurality of primary filters and the plurality of secondary filters during a single exposure of the plurality of pixels is used to balance spatial resolution and the image quality for generating at least two images that are each of a different image type of a plurality of image types; wherein a first subset of filters includes primary filters of the plurality of primary filters having a first spectral response, a second subset of filters includes primary filters of the plurality of primary filters having a second spectral response, and a third subset of filters includes primary filters of the plurality of primary filters having a third spectral response, where each of the first subset, second subset, and third subset are arranged such that each primary filter of that subset is separated by about twice the length of the pixel corresponding to that primary filter measured from the center of the pixel to another primary filter of that subset in both the horizontal and vertical directions, a fourth subset of filters includes secondary filters of the plurality of secondary filters having a fourth spectral response, a fifth subset of filters includes secondary filters of the plurality of secondary filters having a fifth spectral response a sixth subset of filters includes secondary filters of the plurality of secondary filters having a sixth spectral response, and a seventh subset of filters includes secondary filters of the plurality of secondary filters having a seventh spectral response, where each of the fourth subset, fifth subset, sixth subset and seventh subset are arranged such that each secondary filter of that subset is separated by about four times the length of the pixel corresponding to that secondary filter measured from the center of the pixel to another secondary filter of that subset in both the horizontal and vertical directions, and wherein each of the first through third subsets of filters have a different spectral response, the fourth spectral response is highly correlated with the first spectral response and has a lower transmittance than the first spectral response, the fifth and sixth spectral responses are each highly correlated with different portions of the second spectral response and each have lower transmittance than the second spectral response, and the seventh spectral response is highly correlated with the third spectral response and has a lower transmittance than the third spectral response.