projection lens

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• 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

• Projection screen — Home theater projection screen displaying a high definition television image A projection screen is an installation consisting of a surface and a support structure used for displaying a projected image for the view of an audience. Projection… …   Wikipedia

• lens —    One or more pieces of optical glass or similar material designed to collect and focus rays of light to form a sharp image on the film, paper or projection screen …   Forensic science glossary

• projection prints —    A print made by focusing light from the negative on the printing paper by means of a lens system. These positives are generally enlargements. Some workers refer to them as “bromides” because of the type of paper emulsion originally used …   Forensic science glossary

• projection —    The process of directing light in a controlled way. In many cases through a translucent (usually a filmed, drawn or computer generated) image and a lens onto a screen or other viewing surface. Slides and cinema are typically projected.… …   Glossary of Art Terms

• Zoom lens — Nikkor 28 200 mm zoom lens, extended to 200 mm at left and collapsed to 28 mm focal length at right A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed… …   Wikipedia

• Fisheye lens — In photography, a fisheye lens is a wide angle lens that takes in an extremely wide, hemispherical image. Originally developed for use in meteorology [Hill, R. 1924. A lens for whole sky photographs. Quarterly Journal of the Royal Meteorological… …   Wikipedia

• Fresnel lens — A Fresnel lens (pronounced [ frɛz.nəl] or [freɪ nɛl] ) is a type of lens invented by French physicist Augustin Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large aperture and short focal… …   Wikipedia

• Orthographic projection — Part of a series on …   Wikipedia

• Lenticular lens — A series of cylindrical lenses molded in a plastic substrate A lenticular lens is an array of magnifying lenses, designed so that when viewed from slightly different angles, different images are magnified.[1] The most common example is the lenses …   Wikipedia

• Rear-projection television — Rear projection is a type of large screen television display technology. Most very large screen TVs (to 100 inches [254 cm] or more) use rear projection. A variation is a video projector, using similar technology, which projects onto a… …   Wikipedia