Position detector sensor

A position detection sensor that detects an incident position of light, comprising:

• a first pixel pair group that includes a plurality of first pixel pairs arranged along a first direction, each of the first pixel pairs including a first pixel part that generates a first electric signal corresponding to an incident light amount of the light and a second pixel part that is disposed side by side with the first pixel part in the first direction and generates a second electric signal corresponding to an incident light amount of the light;
• a second pixel pair group that includes a plurality of second pixel pairs arranged along a second direction, each of the second pixel pairs including a third pixel part that generates a third electric signal corresponding to an incident light amount of the light and a fourth pixel part that is disposed side by side with the third pixel part in the second direction intersecting the first direction and generates a fourth electric signal corresponding to an incident light amount of the light, and the second pixel pair group intersecting the first pixel pair group;
• and
• a calculation unit that performs center-of-gravity operation by using the first electric signal and the second electric signal to calculate a first position that is the incident position in the first direction, and performs center-of-gravity operation by using the third electric signal and the fourth electric signal to calculate a second position that is the incident position in the second direction,
• wherein in the first pixel part, as the incident position is closer to a first end of the first pixel pair group in the second direction, an intensity of the first electric signal decreases,
• in the second pixel part, as the incident position is closer to the first end in the second direction, an intensity of the second electric signal increases,
• in the third pixel part, as the incident position is closer to a second end of the second pixel pair group in the first direction, an intensity of the third electric signal decreases,
• in the fourth pixel part, as the incident position is closer to the second end in the first direction, an intensity of the fourth electric signal increases, and
• the calculation unit performs weighting on the first position on the basis of the intensity of the third electric signal and the intensity of the fourth electric signal, and performs weighting on the second position on the basis of the intensity of the first electric signal and the intensity of the second electric signal.