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US 8,542,311 B2Granted
Multisection light guides for image sensor pixels
AssigneeAptina Imaging Corporation
InventorVictor Lenchenkov
Life of this patent
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AssigneeAptina Imaging Corporation
InventorVictor Lenchenkov
Estimating the term…
Image sensors may contain arrays of image sensor pixels, each of which includes a microlens and a photosensitive element. A multisection light guide that is made up of multiple light guide layers may be interposed between the microlens and the photosensitive element. The light guide layers may have alternating indicies of refraction to form a spectral filter. The lateral dimensions of the light guide layers may also be configured so that the light guide layers perform spectral filtering. Light guide shapes and sizes may be altered as a function of the lateral position of each image sensor pixel within the image sensor array. The uppermost light guide may be aligned with the microlens and the lowermost light guide may be aligned with the photosensitive element. The lateral positions of each light guide may be laterally shifted with respect to the next to form a staggered stack of light guides.
An image sensor having an array of image sensor pixels, wherein each image sensor pixel is at a respective lateral location in the array of image sensor pixels and wherein each image sensor pixel comprises:
An image sensor having an array of image sensor pixels, wherein each image sensor pixel comprises:
An image sensor having an array of image sensor pixels, wherein each image sensor pixel comprises:
Dependencies are inferred from the claim text.