Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-02-25
1994-05-03
Ben, Loha
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359210, 359211, 359219, 359201, 358491, 358493, G02B 2608
Patent
active
053092740
ABSTRACT:
An optical beam scanning apparatus of this invention includes rotary optical element rotating on an axis of rotation and guiding optical beams incident parallel to the axis of rotation to a direction rectangular to the axis of rotation so as to scan a cylindrical surface inside a cylinder by rotating the optical beams in a peripheral direction. An anamorphic optical system rotating on a straight line substantially coinciding with the axis of rotation, for example, is disposed as optical beam rotation element on the incident side of the optical beams of the rotary optical element, and the optical beams incident into the rotary optical element are rotated at the same rotating speed as that of the rotary optical element on the straight line as the axis of rotation. According to this structure, a plurality of optical beams do not corss one another on the cylindrical surface when they are used, but form substantially parallel beam lines. Accordingly, multiple beam scanning as well as high speed recording becomes possible.
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Ben Loha
Konica Corporation
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