Polygon mirror with embedded yoke

Details Polygon mirror with embedded yoke Polygon mirror with embedded yoke

1993-02-25

1994-12-13

LaRoche, Eugene R.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359198, 359200, 359218, G02B 718

Patent

active

053733916

ABSTRACT:
A polygon mirror is made up of a rotor including a ceramic ring, a yoke and a mirror surface formation member. The yoke and the mirror surface formation member are secured to an outer periphery of the ceramic ring. A radial dynamic pressure bearing is defined by an inner periphery of the ceramic ring and an outer periphery of the fixing shaft. A thrust dynamic pressure bearing is defined by both end surfaces of the ceramic ring and surfaces of a thrust plate fixedly secured to the stator and confronting both end surfaces of the ceramic ring. The ceramic ring, the yoke and the mirror surface formation member are integrated by the material making up the mirror surface formation member during the molding of the member to form the rotor.

REFERENCES:
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4984881 (1991-01-01), Osada et al.
Patent Abstracts of Japan, vol. 13, No. 303 (P-896) Jul. 12, 1989.
Patent Abstracts of Japan, vol. 16, No. 121 (P-1329) Mar. 26, 1992.
Patent Abstracts of Japan, vol. 13, No. 85 (P-834) Feb. 27, 1989.

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