Two-element zoom lens for beam separation error correction

Details Two-element zoom lens for beam separation error correction Two-element zoom lens for beam separation error correction

1994-06-06

1995-11-21

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359204, 359216, 347233, G02B 2608

Patent

active

054692903

ABSTRACT:
A raster output scanner is disclosed which utilizes a spot separation error correction system prior to its rotating polygon mirror. The spot separation error correction system of this invention is a zoom system which comprises two axially adjustable lenses. By moving the two lenses in a pre-determined relationship with each other, the magnification on the rotating polygon can be modified and as a result the spot separation on the photoreceptor can be substantially corrected.

REFERENCES:
patent: 4390235 (1983-06-01), Minoura

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