Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-12-13
1997-10-21
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359206, 359212, 359216, 359217, G02B 2608
Patent
active
056802447
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: 4953926 (1990-09-01), Morimoto
patent: 5111219 (1992-05-01), Makino
patent: 5128795 (1992-07-01), Endou et al.
Naiki Toshio
Ono Satoru
Minolta Co. , Ltd.
Phan James
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