| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic device which enables a detection device to detect reflected light of light projected from a projection device even when the projection device and the detection device are disposed separately from each other.SOLUTION: An electronic device 1 comprises: a projection device 2 that projects light in a projection region on a projection surface; and a detection device 3 that is disposed separately from the projection device. The detection device has a light detection unit 30 and a notification light emission unit 37. The light detection unit detects reflected light of the light projected from the projection device. The notification light emission unit emits, to the projection surface F, notification light Rb for allowing the position of the projection region to be set within a detectable region where the light detection unit detects the reflected light. |
