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wavefront error

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  • Adaptive optics — (AO) is a technology used to improve the performance of optical systems by reducing the effects of rapidly changing optical distortion. It is used in astronomical telescopes and laser communication systems to remove the effects of atmospheric… …   Wikipedia

  • Deformable mirror — A deformable mirror can be used to correct wavefront errors in an astronomical telescope …   Wikipedia

  • Wright Camera — In 1935, just a few years after the introduction of the Schmidt camera, Franklin Wright (Berkley, California) presented his short alternative to the original arrangement. He placed Schmidt corrector at the focal plane, and had the mirror… …   Wikipedia

  • Piston (optics) — In optics, the term piston is the mean value of a wavefront or phase profile across the pupil of an optical system. The piston coefficient is typically expressed in wavelengths of light at a particular wavelength. Its main use is in curve fitting …   Wikipedia

  • Astigmatism — An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp… …   Wikipedia

  • Depth of focus — For the seismology term, see Depth of focus (tectonics). Depth of focus is a lens optics concept that measures the tolerance of placement of the image plane (the film plane in a camera) in relation to the lens. In a camera, depth of focus… …   Wikipedia

  • Non-achromatic objective — A non achromatic objective is an objective lens which is not corrected for chromatic aberration. In telescopes they can a be pre 18th century simple single element objective lenses which were used before the invention of doublet achromatic lenses …   Wikipedia

  • Optical aberration — v · d · e Optical aberration …   Wikipedia

  • Dan Reinstein — Professor Dan Reinstein is a specialist ophthalmic surgeon in the UK and is a board certified ophthalmologist in the USA and Canada, specializing in the field of refractive surgery (vision correction). He is medical director of the London Vision… …   Wikipedia

  • Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …   Wikipedia

  • Maya (software) — Infobox Software name = Maya caption = screenshot of Maya 2008 Unlimited running on Windows XP Professional developer = Alias Systems Corporation, now owned by Autodesk latest release version = 2009 (10.0) latest release date = October 06, 2008… …   Wikipedia

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