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Difference between revisions of "Terminology"
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Aspheric means, not sperical in cross-section. It ought to be aspherical, but nobody uses that form.
m (Aspheric means, not sperical in cross-section. It ought to be aspherical, but nobody uses that form.) |
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;AR coating: anti-reflective coating. A coating on a lens that lets more light through the lens instead of being reflected back towards the light source. See [http://en.wikipedia.org/wiki/Antireflection_coating Wikipedia article] | ;AR coating: anti-reflective coating. A coating on a lens that lets more light through the lens instead of being reflected back towards the light source. See [http://en.wikipedia.org/wiki/Antireflection_coating Wikipedia article] | ||
;aspheric: a lens designed to offer better throw. "Aspheric" because it does not have the classic lens shape. | ;aspheric: a lens designed to offer better throw. "Aspheric" because it does not have the classic lens shape, the shape of the lens is not spherical. This dramatically increases costs. Most affordable ones are injection moulded optical plastic. "Aspheric" means "not a part of a sphere" | ||
;AW: a well-regarded brand of rechargeable battery sold on CPF Marketplace. See article [[rechargeable]] | ;AW: a well-regarded brand of rechargeable battery sold on CPF Marketplace. See article [[rechargeable]] | ||