Optical: systems and elements – Deflection using a moving element
Patent
1991-04-03
1993-02-02
Ben, Loha
Optical: systems and elements
Deflection using a moving element
359211, 359220, 310 90, 384100, G02B 2608
Patent
active
051842459
ABSTRACT:
An optical scanning system is constructed in a compact construction by attaching a light deflecting member to one end of the output shaft of a motor internally having a space for containing parts, forming an optical path extending through the space in the output shaft of the motor between a semiconductor laser and the light deflecting member, and providing at least a collimator lens in the space for containing parts. A meniscus lens, i.e., a correcting optical system, having a concave surface of a radius of curvature in the range of 8 to 20 mm is disposed with its concave surface facing the light deflecting member so that the distance between the reflecting point on the light deflecting member and the optical center of the concave surface is in the range of 5 to 10 mm to limit the curvatures of image field with respect to the scanning direction and with respect to the feed direction of the scanning light beam are limited to a very small degree. Thus, the optical scanning system has a simple, compact construction.
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Ikumi Tomonori
Iwafune Yasuo
Matsumoto Yasuo
Murakami Kazunori
Ben Loha
Tokyo Electric Co. Ltd.
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