Invention Grant
US09184198B1 Stacked image sensor with cascaded optical edge pass filters 有权
具有级联光学边缘滤波器的堆叠图像传感器

Stacked image sensor with cascaded optical edge pass filters
Abstract:
A color sensitive image sensor includes first, second, and third image sensor layers vertically aligned in an image sensor stack. Each of the image sensor layers includes a pixel array oriented to generate image data in response to light incident on the image sensor stack and readout circuitry coupled to the pixel array to readout the image data. A first optical filter layer is disposed between the first image sensor layer and the second image sensor layer and has a first edge pass filter characteristic with a first cutoff wavelength. A second optical filter layer is disposed between the second image sensor layer and the third image sensor layer and has a second edge pass filter characteristic with a second cutoff wavelength offset from the first cutoff wavelength.
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