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Fresnel lens
| Морской словарь |
- Numerous small lenses assembled to form a single large lens of short focal length. developed in the early 19th century by french physicist a.j. fresnel (pronounced freynel) originally used in searchlights, it was later adapted for the mirror landing aid.
- An optical device that focuses light like a magnifying glass; concentric rings are faced at slightly different angles so that light falling on any ring is focused to the same point.
- An optical device that focuses light like a magnifying glass; concentric rings
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Fresnel, английский
A thinner, lighter, "stepped" version of a plano-convex lens. also, a spot light with such a lens. tip: silent "s," sil vous plait.
Fresnel equations, английский
Equations for the amplitude coefficients of transmission and reflection at the interface between two transparent homogeneous media
Fresnel field, английский
See near field.
Fresnel fringes, английский
Дифракционные полосы френеля (класс дифракционных полос, образующихся в тех случаях, когда источник освещения и проекционный экран находятся на конечном расстоянии от края полосы дифракции)
Fresnel lens optical landing system, английский
Оптическая система посадки с линзами френеля
Fresnel number, английский
A parameter determining the regime of diffraction effects
Fresnel prism, английский
A series of narrow prisms molded into one piece of soft plastic that has the effect of one prism. these prisms are cut and applied directly to the lens surface. they are an alternative when prism is required and a standard lens can not be ground or when lenses will be too thick and heavy, if surfaced. in addition, they can be removed without remaking a lens when a patient’s prism correction is undergoing several changes over a period of time.
Fresnel reflection, английский
- Reflection of a portion of the incident light at a planar interface between connectors, mechanical splices, or two homogeneous media having different refractive indices
- Френелевское отражение
Fresnel reflection loss, английский
Reflection losses at the ends of fibers caused by differences in the refractive index between glass and air. the maximum reflection caused by a perpendicular air-glass interface is about 4% or about -14 db.
Fresnel zone, английский
See near field.
Fresnel zone (ut), английский
Len, русский
Длина
Len, испанский
Acrónimo de low entry network [red de entrada baja] equivale a 'appn'. advertencia no se puede utilizar este acrónimo por restricciones de 'copyright'; hay que utilizar la denominación completa.
Len, шведский
Len, английский
Length (icao)
Len, slat, шведский
Lena, английский
Lena [ae, f], латинский
Lenad, английский
Lenard, английский
Pronounced, английский
A заметный, явный (син. noticeable) accent
Originally, английский
Первоначально
Magnifying, английский
Concentric, английский
- Концентрический
- Curved lines or surfaces having a common center of curvature.
- Having a common center.
Searchlight, английский
Прожектор
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Fried hamsters, английский
Usn slang for chicken or beef cordon bleu.
Freshwater mark, английский
Load line marking the maximum draft allowable in fresh water.
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