| Fresnel lens |
(pronounced franell? developed in 1822 by Augustin Jean Fresnel, a French physicist. A lens that is built with multiple tiers of prisms around the top & bottom that gathered all the light, produced parallel rays and focused them into an extremely efficient intense beam. There are six sizes or orders of Fresnel lenses. The numbers signify different focal lengths. The first three orders (size) are the largest with the longest range. The are use for the coastline. ...
출처: www.uwm.edu/~lgfels/glossary.htm
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| Fresnel lens |
Used to focus light. The lens is virtually flat.
출처: www.qeiicc.co.uk/organising_an_event/av/glossary
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| Fresnel lens |
A type of optic consisting of a convex lens and many prisms of glass which focus and intensify the light through reflection and refraction.
출처: biscaynebeacon.home.mindspring.com/LH_vocab.htm
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| Fresnel lens |
A device comprised of a large number of closely spaced circles cut into one surface of a sheet of acrylic which can reduce the incident bend angles of light rays emanating from a projection source placed behind it. The Fresnel Lens tunnels light to the viewing area so that none is lost on the floor or ceiling or walls.
출처: www.thesoundcompany.net/companies/stewart-filmscre...
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| fresh frozen plasma |
Plasma that is frozen within hours after donation to preserve clotting factors.
출처: www.communitybloodcouncil.org/donate/glossary.asp
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