Polygonal mirror of synthetic resin and producing method thereof

Details Polygonal mirror of synthetic resin and producing method thereof Polygonal mirror of synthetic resin and producing method thereof

1995-04-25

1997-09-02

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359855, 359871, 359900, G02B 2608, G02B 7182

Patent

active

056638272

ABSTRACT:
A polygonal mirror of synthetic resin of low cost and which is faithful to the desired standard mirror with respect to flatness, shape, size and other characteristics is made by improving the shape of the polygonal mirror. The mirror includes a plurality of reflection surfaces on side surfaces of a polygonal pillar and a concave fitting portion, which is made instead of a conventional through hole, in its center. The concave portion is used as a reference point for fitting the polygonal mirror over a scanner motor and a convex portion made in a scanner motor side fits into it. Instead of the concave fitting portion, a convex portion can be made in the center of the polygonal mirror with which a concave portion made in the scanner motor side fits.

REFERENCES:
patent: 4560862 (1985-12-01), Eastman et al.
patent: 4836631 (1989-06-01), Shimazu et al.
patent: 4943128 (1990-07-01), Takada et al.
patent: 5134514 (1992-07-01), Munakoshi et al.
patent: 5296959 (1994-03-01), Asai

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