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Abstract
An apparatus includes a three dimensional array of light receptors disposed within a substrate having a light receiving surface, where light receptors disposed closer to the light receiving surface are responsive to light having shorter wavelengths than light receptors disposed further from the light receiving surface, and where each light receptor is configured to output a binary value and to change state between an off-state and an on-state by the absorption of at least one photon.
7 Citations
20 Claims
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1-13. -13. (canceled)
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14. A method comprising:
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illuminating a light receiving surface of substrate comprising a three dimensional array of light receptors, where light receptors disposed in an x-y plane that is closer to the light receiving surface are responsive to light having shorter wavelengths than light receptors disposed in an x-y plane that is further from the light receiving surface, and where each light receptor is configured to output a binary value and to change state between an off-state and an on-state by the absorption of at least one photon; and at the end of an exposure period, reading out binary values from light receptors disposed in at least two different x-y planes of the three dimensional array. - View Dependent Claims (15, 16, 17, 18, 20)
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Specification