| Fresnel fringes | <microscopy> A class of diffraction fringes formed when the source of illumination and viewing screen are at a finite distance from a diffracting edge. In the electron microscope these fringes are best seen when the object is slightly out of focus. (05 Aug 1998) |
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| Fresnel lantern | A lantern having a lamp surrounded by a hollow cylindrical Fresnel lens. Origin: From Fresnel the inventor, a French physicist. Source: Websters Dictionary (01 Mar 1998) |
| Fresnel lens | <physics> A lens built up, progressively, in zones or steps, each zone with its own individual radius. Considerable spherical correction is attained, and the weight of the lens is greatly reduced. Fresnel lenses were originally designed for lighthouses but they are now attainable for small spotlights, automobile headlights, and similar uses. (05 Aug 1998) |
| Fresnel prism | A prism composed of concentric annular rings. (05 Mar 2000) |
| Fresnel reflection | <microscopy> Process by which radiant flux is reflected from an optically plane boundary between two transparent dielectric materials. (05 Aug 1998) |
| Fresnel, Augustin Jean | <person> French physicist, 1788-1827. See: Fresnel lens, Fresnel prism. (05 Mar 2000) |
| Fresnel lens |
lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length
출처: wordnet.princeton.edu/perl/webwn
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| Fresnel lens |
condenser lens used on a spotlight to gather together the rays of light coming from a source and direct them into a narrow beam.
출처: www.profotos.com/education/referencedesk/glossary/...
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| Fresnel lens |
A thin, flat lens made by cutting concentric circular grooves into its surface. The grooves act like prisms to bend and focus light. The Fresnel lens is often used for the condenser lens in overhead projectors and in studio spotlights.
출처: www.pricedrightllc.com/id22.html
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| Fresnel l. |
a thin lens made up of a number of stepped setbacks concentrically arranged; it has the optical properties of a much thicker lens.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Fresnel lenses |
[A. J. Fresnel, Fr. physicist 1788?1827] A magnifying glass that distorts vision, preventing the eye from fixating. Under its influence spontaneous and gaze-specific nystagmus can be precisely evaluated.
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| Fresnel | French physicist who invented polarized light and invented the Fresnel lens (1788-1827) |
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| Fresnel | lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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