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flat-concave lens

См. также в других словарях:

  • Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra …   Wikipedia

  • Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil …   Medical dictionary

  • Lens clock — A lens clock is a mechanical dial caliper that is used to measure dioptric power of a lens. It is a specialized version of a spherometer. A lens clock measures the curvature of a surface, but gives the result in diopters, assuming the lens is… …   Wikipedia

  • Plano-concave — Pla no con cave, a. [Plano + concave.] Plane or flat on one side, and concave on the other; as, a plano concave lens. See {Lens}. [1913 Webster] …   The Collaborative International Dictionary of English

  • plano-concave — pla·no con·cave .plā nō (.)kän kāv, kän . adj flat on one side and concave on the other <a plano concave lens> …   Medical dictionary

  • Kerr-lens modelocking — (KLM) is a method of modelocking lasers via a nonlinear optical process known as the optical Kerr effect . This method allows the generation of pulses of light with a duration as short as a few femtoseconds.The optical Kerr effect is a process… …   Wikipedia

  • Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …   Wikipedia

  • Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia

  • Large format lens — Large format lenses are photographic optics that provide an image circle large enough to cover large format film or plates. Large format lenses are typically used in large format cameras and view cameras.Photographic optics generally project a… …   Wikipedia

  • plano-concave — |plā(ˌ)nō+ adjective Etymology: plan (II) + concave : flat on one side and concave on the other see lens illustration …   Useful english dictionary

  • biconcave lens — a flat lens that has both surfaces concave; called also concavoconcave l …   Medical dictionary

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