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Class Information
Number: 356/32
Name: Optics: measuring and testing > Material strain analysis
Description: Subject matter for examining an article or material by noting the effect of the strain in the stressed article on light associated with the article or material.


Sub-classes under this class:

Class Number Class Name Patents
356/35.5 By light interference detector (e.g., interferometer) 196
356/33 With polarized light 68


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7403323 Process control monitors for interferometric modulators Jul. 22, 2008
7391507 Method of photo-reflectance characterization of strain and active dopant in semiconductor structures Jun. 24, 2008
7327444 Substrate inspection apparatus and method Feb. 5, 2008
7317514 System and method for optimizing heat management Jan. 8, 2008
7307702 Color switchable stress-fracture sensor for damage control Dec. 11, 2007
7295307 Method of and apparatus for measuring stress of semiconductor material Nov. 13, 2007
7289231 Apparatus and method for determining physical properties of a mask blank Oct. 30, 2007
7286210 Passive optical sensor using carbon nanotubes Oct. 23, 2007
7277162 Dynamic performance monitoring of long slender structures using optical fiber strain sensors Oct. 2, 2007
7190440 Controlling compressive force using pressure sensitive film Mar. 13, 2007
7170590 Distributed optical fiber sensor system Jan. 30, 2007
7030366 Micro piezo-optic composite transducers and fabrication methods Apr. 18, 2006
7024343 Method for calibrating a mathematical model Apr. 4, 2006
7005630 Energy-modulating fiber grating sensor Feb. 28, 2006
6999641 Measurement of large strains in ropes using plastic optical fibers Feb. 14, 2006
6985213 Method and apparatus for measuring material property Jan. 10, 2006
6956981 Long base, stretched fiber-optic Bragg network extensometer and production method for same Oct. 18, 2005
6934013 Compressed symbology strain gage Aug. 23, 2005
6912912 Pressure sensor having an optical waveguide and method for pressure detection Jul. 5, 2005
6876786 Fiber-optic sensing system for distributed detection and localization of alarm conditions Apr. 5, 2005
6847438 Apparatus for inspecting surface strain of magnetic tape Jan. 25, 2005
6826491 Method and apparatus for providing film stress measurements based on substrate displacement Nov. 30, 2004
6822218 Method of and apparatus for wavelength detection Nov. 23, 2004
6822217 Optical spectrum analyzer Nov. 23, 2004
6813403 Monitoring of large structures using brillouin spectrum analysis Nov. 2, 2004
6810748 Method for evaluating creep lifetime Nov. 2, 2004
6809803 Surface topology inspection Oct. 26, 2004
6785051 Intrinsic birefringence compensation for below 200 nanometer wavelength optical lithography components with cubic crystalline structures Aug. 31, 2004
6781113 Fiber bragg grating strain sensor with arc configuration Aug. 24, 2004
6771356 Scatterometry of grating structures to monitor wafer stress Aug. 3, 2004
6710861 Method and apparatus for measuring web strain in a confined area Mar. 23, 2004
6710328 Fiber optic composite damage sensor Mar. 23, 2004
6698919 Method of utilizing a fiber for simultaneously measuring distributed strain and temperature Mar. 2, 2004
6678433 Apparatus and method for measuring residual stress and photoelastic effect of optical fiber Jan. 13, 2004
6650405 Method for detecting stress and strain Nov. 18, 2003
6628375 Method of and a system for measuring a stress or a stress distribution, using a stress luminescent material Sep. 30, 2003
6621948 Apparatus and method for differential output optical fiber displacement sensing Sep. 16, 2003
6618654 Method and system for discovering and recovering unused service life Sep. 9, 2003
6606147 Measuring method using photoelastic analysis for finding touching point between ball and track profile Aug. 12, 2003
6601671 Method and apparatus for seismically surveying an earth formation in relation to a borehole Aug. 5, 2003
6597822 Multiplexable fiber-optic strain sensor system with temperature compensation capability Jul. 22, 2003
6591025 Optical sensing system Jul. 8, 2003
6587188 Method and sensor arrangement for measuring temperature and strain using an optical fiber embedded in a cover layer on a substrate Jul. 1, 2003
6573489 Passive, temperature compensated techniques for tunable filter calibration in bragg-grating interrogation systems Jun. 3, 2003
6559437 Fiber optic damage sensor for wire and cable May. 6, 2003
6538725 Method for determination of structural defects of coatings Mar. 25, 2003
6525308 Apparatus and method for wavelength detection with fiber bragg grating sensors Feb. 25, 2003
6512584 Quality control for laser peening Jan. 28, 2003
6480655 Apparatus for the measurement of paperboard strain in a confined area Nov. 12, 2002
6476906 Apparatus for measuring stress in a thin film and method of manufacturing a probe used therefor Nov. 5, 2002

1 2 3 4 5


 
 
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