Rotary polygonal mirror and method of manufacturing the same

Details Rotary polygonal mirror and method of manufacturing the same Rotary polygonal mirror and method of manufacturing the same

1995-03-10

1997-09-23

Dzierzynski, Paul M.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359196, 359217, 359850, 359855, 359872, 264 11, G02B 2608, B29D 1100

Patent

active

056711930

ABSTRACT:
A rotary polygonal mirror for a deflection scanning device includes a regular prism-shaped main body portion consisting of a resin material, a projecting portion which projects from an upper surface of a central portion of the main body portion, and a reflection film formed on side surfaces of the main body portion. The projecting portion consists of the same resin material as the resin material of the main body portion. The main body portion and the projecting portion are integrally molded by injection molding or injection compression molding. A gate portion in the molding is provided to the projecting portion.

REFERENCES:
patent: 4101365 (1978-07-01), Fisli
patent: 4756586 (1988-07-01), Witteveen
patent: 5134514 (1992-07-01), Murakoshi et al.
patent: 5361170 (1994-11-01), Takeyasu

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