Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-06-04
1993-11-09
Ben, Loha
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359217, G02B 2608
Patent
active
RE0344389
ABSTRACT:
A tilt error corrective scanning optical system for use in a laser scanning machine such as a laser printer. The system comprises a linear image forming optical device for causing a beam to form a linear image on a deflecting device, and a scanning image forming optical device for causing the beam deflected by the deflecting device to form an image on a scanned object. The scanning image forming optical device includes a first lens disposed between the deflecting element and the scanned object, and a second lens disposed at a side of the first lens opposed to the scanned object. The second lens includes a toric surface opposed to the scanned object. A surface of the second lens opposed to the deflecting element, a surface of the first lens opposed to the scanned object or a surface of the first lens opposed to the deflecting element defines a cylindrical surface having a refracting power in a direction perpendicular to a scanning plane.
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Ben Loha
Minolta Camera Kabushiki Kaisha
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