Scanning optical system

Details Scanning optical system Scanning optical system

1995-10-24

1998-02-03

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359206, 359207, 359711, 359793, 359216, G02B 2608

Patent

active

057150796

ABSTRACT:
A scanning optical system has a deflector and a scanning lens. A convergent beam is deflected at a uniform angular velocity by the deflector. The scanning lens forms the scanned beam into an image on a scanned surface to scan the surface substantially at a uniform velocity. The scanning lens includes from the side of the deflector a negative lens element and at least one more lens element. The convergent beam is incident on a surface of the deflector which faces the deflector. The scanning lens fulfills predetermined conditions.

REFERENCES:
patent: 4443055 (1984-04-01), Matsuoka et al.
patent: 5111219 (1992-05-01), Makino
patent: 5128795 (1992-07-01), Endou et al.
patent: 5179277 (1993-01-01), Tomita
patent: 5247385 (1993-09-01), Takanashi
patent: 5499107 (1996-03-01), Kuroda

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