| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-performance optical device.SOLUTION: An optical device 1 includes: a first transmission part 141 arranged at a centre of a predetermined region on a first substrate 61; a light-receiving part 20 receiving light passing through the first transmission part 141; N light-emitting parts 10 (N is an integer of two or more) arranged around the first transmission part 141 on the predetermined region; and a control circuit controlling the light-emitting parts 10. The control circuit is functionally divided into N control parts including a first control part to an N-th control part, which are in plan view arranged in regions overlapping with the N light-emitting parts 10, respectively. This can reduce noise light, and improve an S/N ratio and the sensitivity of the optical device. |
