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Class Information
Number: 356/618
Name: Optics: measuring and testing > Position or displacement > Position transverse to viewing axis > Having scale or grid > Moire
Description: Subject matter wherein the scale or grid is viewed through a scale or grid that creates moire fringes.

Sub-classes under this class:

Class Number Class Name Patents
356/619 Quadrature detection 72

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8559017 Method for aligning a plurality of sub-apertures of a multiple-aperture imaging system Oct. 15, 2013
8411284 Method for simultaneous hue phase-shifting and system for 3-D surface profilometry using the same Apr. 2, 2013
8009280 Wavefront characterization and correction Aug. 30, 2011
7969583 System and method to determine an object distance from a reference point to a point on the object surface Jun. 28, 2011
7701593 Optical position measuring arrangement Apr. 20, 2010
7687260 Imaging fluorescence signals using telecentric optics Mar. 30, 2010
7612882 Optical gratings, lithography tools including such optical gratings and methods for using same for alignment Nov. 3, 2009
7433255 Information carrier, and system for positioning such an information carrier in an apparatus Oct. 7, 2008
7433256 Information carrier, and system for positioning such an information carrier in a reading and/or writing apparatus Oct. 7, 2008
7414713 Method of measuring focal point, instrument used therefor, and method of fabricating semiconductor device Aug. 19, 2008
7400413 Three-dimensional shape measuring apparatus using shadow moire Jul. 15, 2008
7369227 Imaging fluorescence signals using telecentricity May. 6, 2008
7307707 Method and system for measuring the imaging quality of an optical imaging system Dec. 11, 2007
7289229 Optical displacement-measuring instrument Oct. 30, 2007
7230722 Shadow moire using non-zero talbot distance Jun. 12, 2007
7154609 Interferential position measuring arrangement Dec. 26, 2006
6940608 Method and apparatus for surface configuration measurement Sep. 6, 2005
6836319 Optical system adjusting method for energy beam apparatus Dec. 28, 2004
6817528 Reflective apparatus and method for optically sensing relative torque employing Moire fringes Nov. 16, 2004
6813440 Body scanner Nov. 2, 2004
6809803 Surface topology inspection Oct. 26, 2004
6763133 Moire image capturing apparatus and method therefor Jul. 13, 2004
6717661 Fourier moire wavefront sensor Apr. 6, 2004
6636255 Three-dimensional image scanner and heat-insulating device for optical apparatus Oct. 21, 2003
6526190 Position measuring system Feb. 25, 2003
6456384 Moire interferometer with overlapping illumination and imaging systems Sep. 24, 2002
6441367 Control systems and methods for diffuse illumination Aug. 27, 2002
6285023 Apparatus for generating origin signal of optical linear scale Sep. 4, 2001
6088105 Measuring unit for determining dimensions of test pieces, preferably of hollow bodies, in particular, of bores of workpieces, and method for measuring such dimensions Jul. 11, 2000
6084712 Three dimensional imaging using a refractive optic design Jul. 4, 2000
5960107 Method for verifying an average topography height function of a photostepper Sep. 28, 1999
5917182 Rotation detector and controller for detecting rotation information using a grating interference system Jun. 29, 1999
5886352 Readhead for an opto-electronic rotary encoder Mar. 23, 1999
5841134 Photo-electric distance- and angle-measurement system for measuring the displacement of two objects with respect to each other Nov. 24, 1998
5834767 Surface position detecting system and projection exposure apparatus using the same Nov. 10, 1998
5757507 Method of measuring bias and edge overlay error for sub-0.5 micron ground rules May. 26, 1998
5689107 Displacement-based opto-electronic accelerometer and pressure sensor Nov. 18, 1997
5678319 Index grating having partial fields that are geometrically offset in the measuring direction Oct. 21, 1997
5610719 Displacement detection system Mar. 11, 1997
5604345 Optical encoder having a combination of a uniform grating and a non-uniform grating Feb. 18, 1997
5583798 Position measuring method and apparatus for generating periodic signals free of harmonics Dec. 10, 1996
5498870 Rotation information detection apparatus Mar. 12, 1996
5459578 Method and apparatus for measuring two dimensional plane displacement by moire fringes of concentric circle gratings Oct. 17, 1995
5302820 Opto-electronic scale reading apparatus having an array of elongate photo-sensitive elements and a periodic light pattern Apr. 12, 1994
5229836 Position detecting apparatus for a moving body Jul. 20, 1993
5189494 Position detecting method and apparatus Feb. 23, 1993
5115573 Incremental length measuring system May. 26, 1992
5076689 Off axis mirror alignment Dec. 31, 1991
5075562 Method and apparatus for absolute Moire distance measurements using a grating printed on or attached to a surface Dec. 24, 1991
5075560 Moire distance measurements using a grating printed on or attached to a surface Dec. 24, 1991

1 2 3

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