Optical apparatus with improved lens mounting device

Details Optical apparatus with improved lens mounting device Optical apparatus with improved lens mounting device

1991-11-12

1994-07-19

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359207, B41J 2435

Patent

active

053313437

ABSTRACT:
An optical apparatus includes a laser beam emitter for outputting a laser beam modulated in accordance with image information, and a lens unit resting on a lens mount. The lens unit includes, all formed integral with one another, an effective lens portion, a cylindrical portion surrounding a side surface of the effective lens portion, and projections extending from peripheral positions of the cylindrical portion. The lens mount includes a holder for holding the cylindrical portion of the lens unit to be rotatable and axially slidable on an optical axis of the laser beam, and a groove formed in the bottom of the holder for receiving the projection.

REFERENCES:
patent: 4804981 (1989-02-01), Prakash et al.
patent: 4866459 (1989-09-01), Tokita et al.

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