| 摘要 |
PROBLEM TO BE SOLVED: To provide a coaxial novel laser radar device capable of optically changing a scan angle for scanning a laser beam for irradiation.SOLUTION: A laser radar device includes: a laser light source 10; an optical system for irradiation; a light receiving element 30 for detection for receiving return laser light BKL; and control calculation means 40 for acquiring a distance up to a detection object by the time after the laser light is emitted until the light receiving element 30 for detection receives the return laser light BKL. The optical system for irradiation includes: coupling optical systems 12, 14 for converting the laser light into a luminous flux; deflection means 18 for two-dimensionally deflecting the laser light flux into the luminous flux; and a variable power lens element 20 for changing the deflected laser light flux into a laser beam SRL for irradiation and having a scan angle change function. An optical system for light reception uses the power variable lens element 20 and the deflection means 18 in common with the optical system for irradiation, and includes focusing lens systems 32, 34 for focusing the return laser light BKL deflected by the deflection means 18 via the variable power lens element 20 toward the light receiving element 30 for detection.SELECTED DRAWING: Figure 1 |
