Terminology: Difference between revisions
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;ANSI/NEMA FL-1: an industry standard for measuring the performance of flashlights. See [[ANSI-NEMA FL-1|article]]. | ;ANSI/NEMA FL-1: an industry standard for measuring the performance of flashlights. See [[ANSI-NEMA FL-1|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] | ;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 [[lenses]] article and [http://en.wikipedia.org/wiki/Antireflection_coating Wikipedia article] for more information. | ||
;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" | ;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" | ||