Apparatus for producing a scanning laser beam of constant linear velocity
Lens where the light rays obey the relation H=KFθ Patent #: 3973833
ApplicationNo. 06/030658 filed on 04/16/1979
US Classes:359/205, Having particular focusing element to receive scanned light359/221Having planar rotating reflector with rotation axis in its plane
ExaminersPrimary: Henry, Jon W.
Attorney, Agent or Firm
International ClassG02B 26/12 (20060101)
Foreign Application Priority Data1977-02-04 JP
AbstractA scanning optical system is disclosed which comprises a scanning device having at least two reflecting surfaces thereon and an afocal optical system directing the beam reflected by a first reflecting surface of the scanning device to a second reflecting surface thereof different from the first one. The afocal optical system is so disposed that the beam incident upon the second surface may move in the opposite direction to the rotational direction of the scanning device.