Rotary polygon mirror type light deflecting system

Details Rotary polygon mirror type light deflecting system Rotary polygon mirror type light deflecting system

1996-10-31

1997-09-09

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359198, 359216, 384144, 384544, 310 90, G02B 2608

Patent

active

056662190

ABSTRACT:
Rotary polygon mirror type light deflecting system having a labyrinth ring fixed to an end of a fixed shaft. An outer circumferential surface of a labyrinth ring is caused to confront an inner circumferential surface of a polygon mirror while interposing a small gap therebetween in a radial direction. Further, a lower portion of a circular hole of the polygon mirror is fitted with a cylindrical sleeve of a hub to fix the polygon mirror to the hub. The polygon mirror and the labyrinth ring are made of the same material, e.g., aluminum or an aluminum alloy. The small gap is made as small as possible.

REFERENCES:
patent: 4691998 (1987-09-01), Sakagaito et al.
patent: 5001581 (1991-03-01), Elsasser et al.
patent: 5227686 (1993-07-01), Ogawa
patent: 5463490 (1995-10-01), Seto

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