Patent ID: 9468760
Filing Date: 2016-10-18
CPC Classification: A61N,G01J

Claim Text:
1. A light-driven retina chip capable of receiving a signal light and a background light, said light-driven retina chip comprising: an array of photodiodes comprising a plurality of photodiodes and a plurality of current amplifying circuits, wherein the signal light is converted into an electric signal and the background light is converted into a plurality of background light currents by the photodiodes, the photodiodes are correspondingly connected to the current amplifying circuits, and the electric signal and the background light currents are amplified by the current amplifying circuits of the array of photodiodes; and a plurality of background light eliminating units comprising a plurality of background light sensing circuits and a plurality of current eliminating circuits, wherein the current eliminating circuits are respectively and electrically connected to the photodiodes of the array of photodiodes, the electric signal is weighted by the current eliminating circuits, and the background light currents generated by the photodiodes from the background light are eliminated by the background light eliminating units, thereby enhancing a dynamic range of the light-driven retina chip; wherein the light-driven retina chip is installed inside a retina of a user, and the electric signal that has been weighted is sent to neural cells of the retina of the user.