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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Shack–Hartmann_wavefront_sensor> ?p ?o }

• Shack–Hartmann_wavefront_sensor abstract "A Shack–Hartmann (or Hartmann–Shack) wavefront sensor (SHWFS) is an optical instrument used for characterizing an imaging system. It is a wavefront sensor commonly used in adaptive optics systems. It consists of an array of lenses (called lenslets) of the same focal length. Each is focused onto a photon sensor (typically a CCD array or CMOS array or quad-cell). The local tilt of the wavefront across each lens can then be calculated from the position of the focal spot on the sensor. Any phase aberration can be approximated by a set of discrete tilts. By sampling an array of lenslets, all of these tilts can be measured and the whole wavefront approximated.Since only tilts are measured the Shack–Hartmann cannot detect discontinuous steps in the wavefront.The design of this sensor was based on an aperture array that had been developed in 1900 by Johannes Franz Hartmann as a means of tracing individual rays of light through the optical system of a large telescope, thereby testing the quality of the image. In the late 1960s, Roland Shack and Ben Platt modified the Hartmann screen by replacing the apertures in an opaque screen by an array of lenslets. The terminology as proposed by Shack and Platt was Hartmann screen. The fundamental principle seems to be documented even before Huygens by the Jesuit philosopher, Christopher Scheiner, in Austria.Shack–Hartmann sensors are used to characterize eyes for corneal treatment of complex refractive errors.Recently, Pamplona et al. developed an inverse of the Shack–Hartmann system to measure one's eye lens aberrations. While Shack–Hartmann sensors measure localized slope of the wavefront error using spot displacement in sensor plane, Pamplona et al. make the user shift the spots till they are aligned. The knowledge of this shift provides data to estimate the first-order parameters such as radius of curvature and hence error due to defocus and spherical aberration.".
• Shack–Hartmann_wavefront_sensor thumbnail Shack_hartmann.jpg?width=300.
• Shack–Hartmann_wavefront_sensor wikiPageID "7066763".
• Shack–Hartmann_wavefront_sensor wikiPageLength "5781".
• Shack–Hartmann_wavefront_sensor wikiPageOutDegree "17".
• Shack–Hartmann_wavefront_sensor wikiPageRevisionID "654008353".
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Adaptive_optics.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Austria.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink CMOS.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Category:Optical_metrology.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Category:Sensors.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Charge-coupled_device.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Christoph_Scheiner.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Hartmann_mask.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Huygens.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Johannes_Franz_Hartmann.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Optical_aberration.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Wavefront.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink Wavefront_sensor.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink File:HartmannShack_1lenslet.svg.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink File:Inverse_of_shack_hartmann.jpg.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink File:Shack_Hartmann_WFS_lensletarray.svg.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLink File:Shack_hartmann.jpg.
• Shack–Hartmann_wavefront_sensor wikiPageWikiLinkText "Shack-Hartmann sensors".
• Shack–Hartmann_wavefront_sensor wikiPageWikiLinkText "Shack–Hartmann wavefront sensor".
• Shack–Hartmann_wavefront_sensor wikiPageUsesTemplate Template:Reflist.
• Shack–Hartmann_wavefront_sensor subject Category:Optical_metrology.
• Shack–Hartmann_wavefront_sensor subject Category:Sensors.
• Shack–Hartmann_wavefront_sensor hypernym Instrument.
• Shack–Hartmann_wavefront_sensor type Agent.
• Shack–Hartmann_wavefront_sensor type Instrument.
• Shack–Hartmann_wavefront_sensor type Instrument.
• Shack–Hartmann_wavefront_sensor type Redirect.
• Shack–Hartmann_wavefront_sensor type Sensor.
• Shack–Hartmann_wavefront_sensor type Transducer.
• Shack–Hartmann_wavefront_sensor comment "A Shack–Hartmann (or Hartmann–Shack) wavefront sensor (SHWFS) is an optical instrument used for characterizing an imaging system. It is a wavefront sensor commonly used in adaptive optics systems. It consists of an array of lenses (called lenslets) of the same focal length. Each is focused onto a photon sensor (typically a CCD array or CMOS array or quad-cell). The local tilt of the wavefront across each lens can then be calculated from the position of the focal spot on the sensor.".
• Shack–Hartmann_wavefront_sensor label "Shack–Hartmann wavefront sensor".
• Shack–Hartmann_wavefront_sensor sameAs Q267928.
• Shack–Hartmann_wavefront_sensor sameAs Hartmann-Shack-Sensor.
• Shack–Hartmann_wavefront_sensor sameAs Shack-Hartmann.
• Shack–Hartmann_wavefront_sensor sameAs Hartmann-Shacksensor.
• Shack–Hartmann_wavefront_sensor sameAs m.0h2p6p.
• Shack–Hartmann_wavefront_sensor sameAs Q267928.
• Shack–Hartmann_wavefront_sensor wasDerivedFrom Shack–Hartmann_wavefront_sensor?oldid=654008353.
• Shack–Hartmann_wavefront_sensor depiction Shack_hartmann.jpg.
• Shack–Hartmann_wavefront_sensor isPrimaryTopicOf Shack–Hartmann_wavefront_sensor.