单词 | Fresnel lens |
释义 | Fresnel lens (once / 2363863 pages) n WORD FAMILY Fresnel lens USAGE EXAMPLESA Fresnel lens also disappeared from the Spring Point Ledge Lighthouse in Portland, Maine, sometime after 1960. Seattle Times(Sep 12, 2016) At its heart is a technological marvel, the Fresnel lens, invented by Frenchman Augustin-Jean Fresnel in 1823 and widely deployed in France by the 1830s. Seattle Times(May 08, 2016) The current lens is called a Fresnel lens. Washington Times(Sep 11, 2014) n lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length Hyper lens, lens system, lense a transparent optical device used to converge or diverge transmitted light and to form images |
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