| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy of optical axis adjustment on a slope when a vehicle body inclination angle is detected by using a pressure sensor.SOLUTION: An optical axis adjustment device of a vehicle headlight includes a front side pressure sensor 11, a rear side pressure sensor 12, a control angle setting unit 22 for calculating a vehicle body inclination angle on the basis of a front side pressure value and a rear side pressure value and setting control angles of optical axes of headlight units 17 and 18 on the basis of the vehicle body inclination angle, and adjuster units 15 and 16 for adjusting the optical axes of the headlight units 17 and 18 on the basis of the control angle. When a difference between the front side pressure value and the rear side pressure value is substantially constant during first and second periods and the front side pressure value and the rear side pressure value are individually changed between the first period and the second period, the control angle setting unit 22 calculates a road inclination angle on the basis of the front side pressure value, the rear side pressure value, and a vehicle traveling distance within a certain period, and calculates a vehicle body inclination angle by using the rode inclination angle. |
