Patent ID: 9520439
Filing Date: 2016-12-13
CPC Classification: G01N,G01T,H01L

Claim Text:
1. An image sensor for capturing X-ray image data of an object and optical image data of the object, the image sensor comprising: an X-ray absorption layer configured to emit photons in response to receiving X-ray radiation of the object; a plurality of photodiodes disposed in a semiconductor layer having a first side opposite a second side, wherein the plurality of photodiodes are optically coupled to receive image light of the object to generate the optical image data, and wherein the plurality of photodiodes are optically coupled to receive the photons from the X-ray absorption layer to generate the X-ray image data, the plurality of photodiodes positioned to receive the photons from the X-ray absorption layer through only the second side of the semiconductor layer and positioned to receive the image light through the first side of the semiconductor layer, wherein the image sensor is configured to receive the image light propagating from outside the image sensor, and wherein the X-ray absorption layer is disposed proximate to the second side of the semiconductor layer; and one or more microlenses disposed proximate to the first side of the semiconductor layer, wherein the X-ray radiation and the image light propagate through the one or more microlenses, and wherein the microlenses focus the image light into the plurality of photodiodes.