Scanning optical system having at least two reflecting surfaces and an afocal optical system
Patent 4299438 Issued on November 10, 1981. Estimated Expiration Date: 
April 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 16, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3573849 3668984 Apparatus for producing a scanning laser beam of constant linear velocity Lens where the light rays obey the relation H=KFθ Patent #: 3973833 InventorAssigneeApplicationNo. 06/030658 filed on 04/16/1979US Classes:359/205, Having particular focusing element to receive scanned light359/221Having planar rotating reflector with rotation axis in its planeExaminersPrimary: Henry, Jon W.Attorney, Agent or FirmInternational ClassG02B 26/12 (20060101)Foreign Application Priority Data1977-02-04 JPAbstractA 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. | |
