| 摘要 |
An input device includes a light beam scanner 3, a photodetector 4, and a controller 5. The light beam scanner 3 emits light beams toward a spatially projected image while two-dimensionally scanning the light beams. The photodetector 4 detects the light beams that have been reflected by an input object within a detection range R1. The detection range R1 extends inward of the input device relative to the image. The controller 5 counts a scan line number indicative of a number of the light beams that have been detected by the photodetector 4, and detects a depth position of the input object based on the scan line number. The controller 5 further detects the depth position of the input object based on a depth conversion table. The depth conversion table specifies depth layer levels corresponding to scan line numbers. |
