Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2007-11-27
2007-11-27
Phan, James (Department: 2872)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S630000, C359S850000, C359S857000
Reexamination Certificate
active
10823020
ABSTRACT:
A scanning optical system capable of sufficiently enlarging an exit pupil and being reduced in size is disclosed. The scanning optical system has a scanning device used to scan light from a light source and a first optical system used to directs the light scanned by the scanning device to an exit pupil. The first surface has at least a reflective action and is decentered with respect to a central principal ray. The second surface reflects the light reflected by the first surface again toward the first surface. The first surface reflects the central principal ray, which has again been made incident to the first surface from the second surface, toward a side substantially opposite to a side toward which the central principal ray was reflected the last time with respect to a normal on a hit point of the central principal ray in the first surface.
REFERENCES:
patent: 6043799 (2000-03-01), Tidwell
patent: 6222676 (2001-04-01), Togino et al.
patent: 6333820 (2001-12-01), Hayakawa et al.
patent: 7027229 (2006-04-01), Inoguchi et al.
patent: 10127367 (2002-12-01), None
patent: 1 225 470 (2001-12-01), None
patent: 2001-281583 (2001-10-01), None
patent: 2003029197 (2003-01-01), None
Kobayashi Shuichi
Yamazaki Shoichi
Canon Kabushiki Kaisha
Morgan & Finnegan , LLP
Phan James
LandOfFree
Scanning optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanning optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning optical system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3877596