Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-11-27
2007-11-27
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S614000
Reexamination Certificate
active
11046053
ABSTRACT:
A scanning device for scanning a scale graduation for detecting relative movements of the scanning device with respect to the scale graduation. The scanning device includes a first primary sensor field and a second primary sensor field used for detecting relative movements along a first spatial direction. A first secondary sensor field and a second secondary sensor field for detecting relative movements along a second spatial direction, which is linearly independent of the first spatial direction. The first primary sensor field, the second primary sensor field, the first secondary sensor field and the second secondary sensor field are arranged point-symmetrically in relation to a mid-point in a plane.
REFERENCES:
patent: 5841134 (1998-11-01), Burgschat et al.
patent: 6603114 (2003-08-01), Holzapfel et al.
patent: 6723980 (2004-04-01), Lee
patent: 2002/0018220 (2002-02-01), Aoki
patent: 2003/0104642 (2003-06-01), Ijichi et al.
patent: 195 27 287 (2000-06-01), None
patent: 100 54 376 (2001-06-01), None
Burgschat Reiner
Matz Manfred
Brinks Hofer Gilson & Lione
Epps Georgia
Heidenhain GmbH Dr. Johannes
Livedalen Brian J
LandOfFree
Scanning device for scanning a scale graduation, and... 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 device for scanning a scale graduation, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning device for scanning a scale graduation, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3884924