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Title:
LENS ARRAY, LENS UNIT, LED HEAD, EXPOSURE DEVICE, IMAGE FORMING APPARATUS, AND READING DEVICE
Document Type and Number:
Japanese Patent JP2012247541
Kind Code:
A
Abstract:

To suppress deterioration of contrast in imaging.

In a lens array formed by arranging a plurality of lenses, each of the lenses forming the lens array has, near an optical axis of the lens, a first area having a first curvature, and a second area farther away from the optical axis than the first area and having a second curvature larger than the first curvature.


Inventors:
YAMAMURA AKIHIRO
Application Number:
JP2011117903A
Publication Date:
December 13, 2012
Filing Date:
May 26, 2011
Export Citation:
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Assignee:
OKI DATA KK
International Classes:
G02B3/00; B41J2/44; B41J2/45; B41J2/455; G02B5/00; H04N1/036
Domestic Patent References:
JP2012240392A2012-12-10
JP2011053441A2011-03-17
JP2006178160A2006-07-06
JP2006317788A2006-11-24
JP2007144899A2007-06-14
JP2006071947A2006-03-16
JP2006058320A2006-03-02
JP2003287603A2003-10-10
JP2003276030A2003-09-30
JP2012078834A2012-04-19
JP2003262706A2003-09-19
JP2009086649A2009-04-23
JP2001221975A2001-08-17
JP2008083685A2008-04-10
Foreign References:
US20090067055A12009-03-12
US20010033422A12001-10-25
WO2008026490A12008-03-06
US20090244713A12009-10-01
Attorney, Agent or Firm:
Takaji Kanakura



 
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