Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-01-09
1998-05-12
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359205, 359212, 359216, 347243, 347244, G02B 2608
Patent
active
057514623
ABSTRACT:
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the apparatus. The apparatus includes a finite lens and a cylinder lens for giving predetermined characteristics to light beams emitted by a plurality of light sources, a laser synthesis mirror unit for synthesizing laser beams passing through the lenses, a deflection unit for deflecting the synthesized light beams, first and second image-forming lenses for adjusting the aberration characteristics, at the imaging position, of the deflected light beam, one or three mirrors for outputting the light beam passing through the image-forming lenses at predetermined positions, and can provide a color image free from any color misregistration.
REFERENCES:
patent: 5181137 (1993-01-01), Koide
patent: 5251055 (1993-10-01), Koide
Fukutome Yasuyuki
Shiraishi Takashi
Yamaguchi Masao
Kabushiki Kaisha Toshiba
Phan James
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