Scanning optical system with plural focusing units

Details Scanning optical system with plural focusing units Scanning optical system with plural focusing units

1990-12-19

1992-09-15

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359205, H04N 121

Patent

active

051481901

ABSTRACT:
A scanning optical system is disclosed which comprises a light source unit emitting generally parallel rays of light, a deflector which deflects the rays of light issuing from the light source unit, a first focusing optical unit that is provided between the light source unit and the deflector, that has power in a direction perpendicular to the direction in which the rays of light are to be deflected, with the principal point being located outside the first optical unit toward the light source unit, and that focuses the incident rays of light to form a line image at a point close to the deflector, and a second focusing optical unit that permits the deflected rays of light to be focused on the object to be scanned.

REFERENCES:
patent: 4123135 (1978-10-01), Rabedeau
patent: 5009472 (1991-04-01), Morimoto

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