Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-09-23
1998-05-19
Dzierzynski, Paul M.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359200, G02B 2608
Patent
active
057543267
ABSTRACT:
The improved optical deflector includes a polygonal mirror to be rotated for deflecting an incident light beam for scanning purposes and a motor for rotating the polygonal mirror, and the rotating shaft of the motor is provided with a reference seat on which the polygonal mirror is to be mounted in close contact; the rotor of the motor is solely composed of a rotor magnet that is mounted on the rotating shaft, with the polygonal mirror being disposed between the reference seat of the rotating shaft and the rotor magnet; the rotor magnet is held in close contact with a plane of the polygonal mirror which is perpendicular to the rotating center axis thereof. Even if the optical deflecting element such as a polygonal mirror is rotated at high speed, the runout of the rotor of the motor is suppressed to a minimum without causing a deviation of the scanning light beam, thereby insuring efficient rotation of the deflecting element. The optical deflector consists of a sufficiently small number of parts or components to permit easy working and assembling operations.
REFERENCES:
patent: 4523800 (1985-06-01), Yamashita
patent: 4607908 (1986-08-01), Ishida
patent: 4717223 (1988-01-01), Ishida
patent: 5069515 (1991-12-01), Itami
patent: 5142176 (1992-08-01), Takahashi
Dzierzynski Paul M.
Fuji 'Xerox Co., Ltd.
Schuberg Darren E.
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