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Class Information
Number: 250/559.29
Name: Radiant energy > Photocells; circuits and apparatus > With circuit for evaluating a web, strand, strip, or sheet > Measuring position
Description: Subject matter including a circuit responsive to a photocell, and wherein the photocell is arranged relative to the material so that the circuit provides an output indicative of the location of the material relative to some reference frame.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619745 |
Optical encoder including aperture with diffusion element and collimator lens |
Nov. 17, 2009 |
| 7592616 |
Detecting micropipes |
Sep. 22, 2009 |
| 7576312 |
Positioning apparatus for a printer |
Aug. 18, 2009 |
| 7570801 |
Device suitable for placing components on a substrate |
Aug. 4, 2009 |
| 7560719 |
Commutator measuring device |
Jul. 14, 2009 |
| 7560718 |
Method for sensing a marking on a running web of material |
Jul. 14, 2009 |
| 7554676 |
Positional measurement system and lens for positional measurement |
Jun. 30, 2009 |
| 7547870 |
Precision spacecraft payload platforms |
Jun. 16, 2009 |
| 7538866 |
Optical sensor and method for optically inspecting surfaces |
May. 26, 2009 |
| 7525113 |
Optical scanning unit and method for mounting the same |
Apr. 28, 2009 |
| 7504072 |
Biopolymeric array scanning devices that focus on the far side of an array and methods for using the same |
Mar. 17, 2009 |
| 7502127 |
Sensor device and stage device |
Mar. 10, 2009 |
| 7501645 |
Cornea characteristics measuring device |
Mar. 10, 2009 |
| 7498596 |
Exposure method that obtains, prior to exposure, reticle surface form data and measurement position error, for scanning control |
Mar. 3, 2009 |
| 7499184 |
Three-dimensional measuring apparatus and three-dimensional measuring method |
Mar. 3, 2009 |
| 7495248 |
Position detecting apparatus and position detecting method |
Feb. 24, 2009 |
| 7491956 |
Optical scanning device having a distance sensor and a determined focal distance for scanning objects |
Feb. 17, 2009 |
| 7480053 |
Position detection based on two-directional correlation |
Jan. 20, 2009 |
| 7468522 |
Collar, system and method for detecting a mark on a rod |
Dec. 23, 2008 |
| 7449708 |
Paper detection apparatus and printing method |
Nov. 11, 2008 |
| 7439488 |
Positioning apparatus and method thereof |
Oct. 21, 2008 |
| 7423767 |
Method and apparatus for transmitting energy via a laser beam |
Sep. 9, 2008 |
| 7423768 |
Scanning unit for a position measuring system for the optical scanning of a scale and position measuring system utilizing such a scanning unit |
Sep. 9, 2008 |
| 7420196 |
Multiple axis multipoint non-contact measurement system |
Sep. 2, 2008 |
| 7417748 |
Method and apparatus for measuring dimensional changes in transparent substrates |
Aug. 26, 2008 |
| 7417749 |
Method and apparatus for protecting an optical transmission measurement when sensing transparent materials |
Aug. 26, 2008 |
| 7415212 |
Data communication system, data transmitter and data receiver |
Aug. 19, 2008 |
| 7411171 |
Circuit for analyzing a signal reflected from an object |
Aug. 12, 2008 |
| 7408137 |
Image capture device with a map image generator |
Aug. 5, 2008 |
| 7405390 |
Position detection system |
Jul. 29, 2008 |
| 7391043 |
Self calibrating media edge sensor |
Jun. 24, 2008 |
| 7376261 |
Surface scan measuring device and method of forming compensation table for scanning probe |
May. 20, 2008 |
| 7375361 |
Optical alignment device for machine tool |
May. 20, 2008 |
| 7352891 |
Position detecting method |
Apr. 1, 2008 |
| 7322229 |
Device and method for measuring the profile of a surface |
Jan. 29, 2008 |
| 7321108 |
Dynamic focusing method and apparatus |
Jan. 22, 2008 |
| 7317197 |
Method of detecting tightly adhering state, tight adhesion control method and method of and apparatus for near field exposure |
Jan. 8, 2008 |
| 7315038 |
Methods and systems for positioning a laser beam spot relative to a semiconductor integrated circuit using a processing target as an alignment target |
Jan. 1, 2008 |
| 7297972 |
Methods and systems for positioning a laser beam spot relative to a semiconductor integrated circuit using a processing target as a metrology target |
Nov. 20, 2007 |
| 7289230 |
Wireless substrate-like sensor |
Oct. 30, 2007 |
| 7271920 |
Position-measuring device |
Sep. 18, 2007 |
| 7265364 |
Level sensor for lithographic apparatus |
Sep. 4, 2007 |
| 7256051 |
Method and device for identifying a marker using a detector substance |
Aug. 14, 2007 |
| 7256388 |
System and method for interactive selection of agricultural vehicle guide paths through a graphical user interface other than moving the vehicle |
Aug. 14, 2007 |
| 7247833 |
Apparatus and method for the position checking of a mechanical part |
Jul. 24, 2007 |
| 7247832 |
Signal processing circuit and method using analog voltage signal to pulse width modulation conversion |
Jul. 24, 2007 |
| 7245378 |
Measuring laser light transmissivity in a to-be-welded region of a work piece |
Jul. 17, 2007 |
| 7238958 |
Fault position identification system for a semiconductor device and method of identifying a fault position of a semiconductor device |
Jul. 3, 2007 |
| 7235806 |
Wafer edge with light sensor |
Jun. 26, 2007 |
| 7235807 |
Near field analysis apparatus having irradiation-side guide light and light-collection-side guide light |
Jun. 26, 2007 |
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