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Browse by Category: Main > Electrical & Energy
Class Information
Number: 250/548
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controls its own optical systems > Controlling web, strand, strip, or sheet
Description: Subject matter wherein the photocell detects a material having a cross-sectional dimension which is small compared to length and produces an electrical output which through additional structure controls the position, size or speed of the material.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8643842 Method and system for use in monitoring properties of patterned structures Feb. 4, 2014
8593635 Camera web support Nov. 26, 2013
8563918 Laser hammering technique for aligning members of a constructed array of optoelectronic devices Oct. 22, 2013
8518614 Mark position detection apparatus Aug. 27, 2013
8411271 Pattern forming method, pattern forming apparatus, and device manufacturing method Apr. 2, 2013
8395755 Lithographic apparatus and device manufacturing method Mar. 12, 2013
8384900 Exposure apparatus Feb. 26, 2013
8345244 Exposure apparatus Jan. 1, 2013
8344341 Lithographic apparatus and device manufacturing method Jan. 1, 2013
8345242 Optical system for use in stage control Jan. 1, 2013
8319202 Color registration strategy for preprinted forms Nov. 27, 2012
8289515 Method and system for use in monitoring properties of patterned structures Oct. 16, 2012
8284399 Alignment system for optical lithography Oct. 9, 2012
8232540 Lithographic apparatus and substrate edge seal Jul. 31, 2012
8208140 Alignment system and alignment marks for use therewith Jun. 26, 2012
8077377 Spatial light modulator with structured mirror surfaces Dec. 13, 2011
8039825 Installation for exposing a cinematographic film from digital images Oct. 18, 2011
8011789 Rear projection display Sep. 6, 2011
8010307 In-line overlay measurement using charged particle beam system Aug. 30, 2011
8003968 Lithographic apparatus and substrate edge seal Aug. 23, 2011
7989756 Active-isolation mounts for optical elements Aug. 2, 2011
7884935 Pattern transfer apparatus, imprint apparatus, and pattern transfer method Feb. 8, 2011
7880127 Apparatus and method for aligning an image sensor including a header alignment means Feb. 1, 2011
7859656 Defect inspection method and system Dec. 28, 2010
7852481 Apparatus and method for measuring optical property Dec. 14, 2010
7795601 Method and apparatus to improve lithography throughput Sep. 14, 2010
7795603 Lithographic apparatus and device manufacturing method Sep. 14, 2010
7784975 Apparatus for linear illumination of a moving product web Aug. 31, 2010
7767956 Methods and systems for lithography process control Aug. 3, 2010
7723710 System and method including a prealigner May. 25, 2010
7667216 Method of achieving CD linearity control for full-chip CPL manufacturing Feb. 23, 2010
7652751 Lithographic apparatus and device manufacturing method Jan. 26, 2010
7633075 Through hole formation state detecting device and electronic timepiece using the detecting device Dec. 15, 2009
7595471 Auto focusing of a workpiece using an array detector each with a detector identification Sep. 29, 2009
7566893 Best focus detection method, exposure method, and exposure apparatus Jul. 28, 2009
7531821 Imprint apparatus and imprint method including dual movable image pick-up device May. 12, 2009
7495779 Level detection apparatus Feb. 24, 2009
7492452 Defect inspection method and system Feb. 17, 2009
7482611 Lithographic apparatus and device manufacturing method Jan. 27, 2009
7466414 Position detection apparatus and method Dec. 16, 2008
7462814 Methods and systems for lithography process control Dec. 9, 2008
7459709 Method of forming optical images, a control circuit for use with this method, apparatus for carrying out said method and process for manufacturing a device using said method Dec. 2, 2008
7459710 Lithographic apparatus, method for calibrating and device manufacturing method Dec. 2, 2008
7453078 Sensor for use in a lithographic apparatus Nov. 18, 2008
7446873 Reflective alignment grating Nov. 4, 2008
7439531 Alignment systems and methods for lithographic systems Oct. 21, 2008
7435984 Imaging optical system and exposure apparatus Oct. 14, 2008
7420194 Lithographic apparatus and substrate edge seal Sep. 2, 2008
7398733 Inline measurement and closed loop control method in printing machines Jul. 15, 2008
7394523 Exposure apparatus and method of controlling exposure apparatus Jul. 1, 2008

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