Title:
光走査装置および画像形成装置
Document Type and Number:
Japanese Patent JP4430314
Kind Code:
B2
Abstract:
A scanning imaging lens includes at least two scanning lenses. Of the scanning lens, the scanning lens that is closer to a deflection unit is formed by resin molding, and has a positive refracting power in the horizontal scanning direction, with zero or close to zero refracting power in the vertical scanning direction, and has a function of correcting constant velocity characteristic in the optical scanning. The scanning lens that is closer to the surface to be scanned has a weak refracting power in the horizontal scanning direction and a strong positive refracting power in the vertical scanning direction, and the linearity Lin of the scanning imaging lens satisfies the condition 2.0
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Inventors:
Seizo Suzuki
Naoki Miyatake
Shigeaki Imai
Naoki Miyatake
Shigeaki Imai
Application Number:
JP2003038716A
Publication Date:
March 10, 2010
Filing Date:
February 17, 2003
Export Citation:
Assignee:
株式会社リコー
International Classes:
B41J2/44; G02B26/10; G02B13/00; G02B13/18; G02B26/12; H04N1/036; H04N1/113
Domestic Patent References:
| JP8278464A | ||||
| JP7146437A | ||||
| JP8240767A | ||||
| JP2002148540A | ||||
| JP2002277788A | ||||
| JP2000131632A | ||||
| JP2000098278A | ||||
| JP2002365574A |
Attorney, Agent or Firm:
Toru Kabayama
Shogo Honda
Shogo Honda