Light deflector for laser beam scanning - uses three relatively spaced rotatable deflection mirrors in path of laser beam

摘要

The light deflector has two deflection mirrors (As1,AS2) with different rotation axes, at a defined relative spacing (D) and a third deflection mirror (ASZ) at a given distance (E) infront of the first deflection mirror (AS1), with a parallel rotation axis to the latter. The further deflection mirror (AS2) and the first deflection mirror (AS1) are rotated through respective angles defined in terms of the deflection angle (S) for directing the light beam onto the second deflection mirror (AS2) and the relative spacings (D,E) of the three mirrors (AS1,AS2,ASZ). ADVANTAGE - Prevents distortion.