| 摘要 |
PROBLEM TO BE SOLVED: To achieve a new two-dimensional scanning laser beam projection device that can reduce a deflection angle of a laser beam that is two-dimensionally deflected by deflection means.SOLUTION: A two-dimensional scanning laser beam projection device includes a laser light source 10, collimator lens 12, adjustment lens 14, deflection means 18, and variable power lens 20. In terms of a direction to perform reduction of a deflection angle, reduction concentric coefficients Cα and Cβ satisfy 0.5≤Cα≤1.8 and 0.5≤Cβ≤1.8, respectively.SELECTED DRAWING: Figure 1 |
