Title:
IMAGE FORMING OPTICAL SYSTEM, IMAGE READER USING IMAGE FORMING OPTICAL SYSTEM, AND IMAGE WRITER
Document Type and Number:
WIPO Patent Application WO/2007/040246
Kind Code:
A1
Abstract:
An image forming optical system for forming a high-quality image by determining a
most suitable design condition while ensuring a uniform and adequate amount of
light and preventing ghost. In this image forming optical system having a slit, the
factors to remove the stray light include the inclination of the direction of
a lens array, the slit width, the lens pitch, the angle of view, and height of the
light-shielding wall. The position of the slit, the thickness of the lens, and
width of the lens line do not affect the stray light removal but affect the brightness. If
the system has no slit, the essential factors to remove the stray light include the
height of the light-shielding wall and the lens pitch. The thickness of the lens
and width of the lens line do not affect the stray light removal but affects the
brightness.
Inventors:
NAGATA HIDESHI (JP)
HAMANAKA KENJIRO (JP)
NEMOTO HIROYUKI (JP)
HAMANAKA KENJIRO (JP)
NEMOTO HIROYUKI (JP)
Application Number:
PCT/JP2006/319875
Publication Date:
April 12, 2007
Filing Date:
October 04, 2006
Export Citation:
Assignee:
NIPPON SHEET GLASS CO LTD (JP)
NAGATA HIDESHI (JP)
HAMANAKA KENJIRO (JP)
NEMOTO HIROYUKI (JP)
NAGATA HIDESHI (JP)
HAMANAKA KENJIRO (JP)
NEMOTO HIROYUKI (JP)
International Classes:
G02B27/18; G02B3/00; H04N1/028; H04N1/036
Foreign References:
| JP2005037891A | 2005-02-10 | |||
| JP2003202411A | 2003-07-18 | |||
| JP2003139918A | 2003-05-14 |
Attorney, Agent or Firm:
SUGIMURA, Kosaku et al. (2-4 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, JP)
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