LIGHT SCANNING APPARATUS AND SEPARATION DISTANCE MEASUREMENT APPARATUS

摘要

A light scanning apparatus including a light source for emitting light in a direction different from a direction orthogonal to the reference direction, and a rotating reflection body that rotates about an axis inclined at an inclination angleφto the reference direction and includes at least one reflecting surface that is disposed in a direction intersecting obliquely with the axis and reflects light incident on the reflecting surface at an incident angleθ. A specific scanning direction is a direction intersecting at an angle to the reference direction and the rotation axis inclination angleφ≠0°. The inclination angleφis predetermined according to the incident angleθsuch that deviation of the scanning beam reflected by the reflecting surface is smaller than the deviation of the scanning beam that would be obtained with the inclination angleφof the rotation axis 0°.