corrugated lens

  • 1corrugated lens — noun : a lens in which concentric portions are cut out from the surface so as to lessen the weight without affecting the focal power …

    Useful english dictionary

  • 2History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …

    Wikipedia

  • 3Cape Moreton Light — Cape Moreton Lighthouse, 2007 …

    Wikipedia

  • 4Old Caloundra Light — on the right, New Caloundra Light on the left, 2008 …

    Wikipedia

  • 5Double Island Point Light — Double Island Point Light, 2006 …

    Wikipedia

  • 6Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …

    Wikipedia

  • 73D film — For more information on 3D film titles, see List of 3 D films. A 3 D (three dimensional) film or S3D (stereoscopic 3D) film[1] is a motion picture that enhances the illusion of depth perception. Derived from stereoscopic photography, a… …

    Wikipedia

  • 8Grassy Hill Light — Grassy Hill Light, 2005 …

    Wikipedia

  • 9Contact lithography — Contact lithography, also known as contact printing, is a form of photolithography whereby the image to be printed is obtained by illumination of a photomask in direct contact with a substrate coated with an imaging photoresist layer. Contents 1… …

    Wikipedia

  • 10Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …

    Wikipedia