Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2006-04-04
2006-04-04
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S204200, C359S216100
Reexamination Certificate
active
07023597
ABSTRACT:
An image reading device comprising a rotary polygon mirror (6) for scanning a light flux from a light source (1), an imaging optical system (4) for forming on a reflection plane of the mirror (6) a linear image larger than the width in a main scanning direction of the one reflection plane, and a curved-face mirror (7), wherein the light source (1), the imaging optical system (4), the rotary polygon mirror (6) and the curved-face mirror (7) are disposed in different positions in a sub-scanning direction, a light flux from the imaging optical system (4) shines obliquely onto the polygon mirror (6), and a light flux reflected off the mirror (6) beams obliquely onto the curved-face mirror (7). Since one curved-face mirror can beam a light flux reflected from the rotary polygon mirror onto a surface to be scanned and the rotary polygon mirror having a small inscribed radius and many reflection planes can be used, satisfactory optical performance and high-speed feature can be realized.
REFERENCES:
patent: 5353047 (1994-10-01), Nakamura et al.
patent: 5426298 (1995-06-01), Sakuma et al.
patent: 5504613 (1996-04-01), Itabashi et al.
patent: 5583559 (1996-12-01), Nakamura et al.
patent: 5805323 (1998-09-01), Ichikawa
patent: 5930019 (1999-07-01), Suzuki et al.
patent: 5963355 (1999-10-01), Iizuka
patent: 6075636 (2000-06-01), Sekikawa
patent: 6091533 (2000-07-01), Iizuka
patent: 6239894 (2001-05-01), Ishibe
patent: 6249307 (2001-06-01), Ueno
patent: 6341030 (2002-01-01), Takeshita et al.
patent: 6504639 (2003-01-01), Yoshikawa et al.
patent: 2002/0131137 (2002-09-01), Suzuki
patent: 2-32874 (1990-02-01), None
patent: 4-194814 (1992-07-01), None
patent: 6-118325 (1994-04-01), None
patent: 6-281872 (1994-10-01), None
patent: 6-281873 (1994-10-01), None
patent: 9-187984 (1997-07-01), None
patent: 9-197310 (1997-07-01), None
patent: 11-30710 (1999-02-01), None
patent: 11-153764 (1999-06-01), None
patent: 2000-19443 (2000-01-01), None
patent: 2001-033725 (2001-02-01), None
patent: 01/23942 (2001-04-01), None
Matsuki Daizaburo
Okuda Akinobu
Yamamoto Hajime
Yamamoto Yoshiharu
Yoshikawa Masanori
Hamre Schumann Mueller & Larson P.C.
Matsushita Electric - Industrial Co., Ltd.
Phan James
LandOfFree
Optical scanning device, image reading device provided with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical scanning device, image reading device provided with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical scanning device, image reading device provided with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3580272