Patent ID: 6847025

Claim:
A semiconductor image position sensing device provided with a photoelectric layer generating a photoelectric current in a portion onto which light was input in response to intensity of the light input to the photoelectric layer, a resistance layer laminated on said photoelectric layer in which the photoelectric current generated in said photoelectric layer flows into one of a plurality of portions of said resistance layer corresponding to that onto which said light was input, and signal current output terminals wherein the photoelectric current generated in said photoelectric layer is distributed in a ratio in response to a resistance value between the signal current output terminals and said resistance layer defined at a position where the photoelectric current was flowed into said resistance layer and from which the photoelectric current is output as an electric current obtained by summing currents over all of the plurality of the portions of said resistance layer, comprising: a resistance subtracting a photoelectric current having a predetermined distribution from photoelectric currents generated in respective portions of the photoelectric layer over all of said photoelectric layer, and the photoelectric current having a predetermined distribution, which is subtracted by said resistance flows into said resistance layer.