Patent ID: 9625694
Date: 2017-04-18
CPC Classifications: G02B

Claim:
1. A scanning optical system comprising: a scanner that deflects laser light from a light source while changing a deflection angle of the laser light; a light splitting unit that is capable of splitting-off the laser light from an optical path of the laser light deflected by the scanner; an optical-path combining unit that is disposed between the light source and the scanner and that causes the laser light split-off by the light splitting unit to travel toward the scanner; and a reentry relay optical system that has one time magnifying power and that is disposed between the light splitting unit and the optical-path combining unit, the reentry relay optical system relaying the laser light split-off by the light splitting unit so as to cause the laser light to be incident again on the scanner at the same position as an incident position of the laser light from the light source via the optical-path combining unit.