fresnel lens (Q3192)
From CanonBase
A lens of large aperture and short focal length, with circular ribs and a diffusing surface that casts a soft-edged beam of light.
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | fresnel lens | A lens of large aperture and short focal length, with circular ribs and a diffusing surface that casts a soft-edged beam of light. |
Statements
105
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141411
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2304
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3 August 2013
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3
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fresnel lens (English)
A lens of large aperture and short focal length, with circular ribs and a diffusing surface that casts a soft-edged beam of light. (English)
3 August 2013
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Fresnelova (Czech)
Čočka s velkou světelností krátkou ohniskovou vzdáleností je kruhově žebrovaná a má difúzní povrch způsobující měkké okraje světelného kuželu. (Czech)
3 August 2013
stupňovitá čočka (Czech)
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lente di Fresnel (a gradini) (Italian)
3 August 2013
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fresnellens (Dutch)
ringlens, verspreidt het licht gelijkmatig en zacht (Dutch)
3 August 2013
ringlens (Dutch)
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Frsenel Linse (German)
Linse kozentrischen kreisförmigen Stufen. Diese Oberfläche sorgt für einen weichgezeichneten Rand des Lichtkegels. (German)
3 August 2013
Stufenlinde (German)
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lente Fresnel (Spanish)
Una lente de gran apertura y longitud focal corta con nervaduras circulares y una superficie de difusión que proyecta un haz de luz de bordes suaves que es fácil de mezclar con otra luz. (Spanish)
3 August 2013
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fresnellins (Swedish)
en lins som har en kort fokal längd = brännviddmed cirkulära ringar och ett difuserande yta ger en mjuk ljusbild. (Swedish)
3 August 2013
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Fresnel lens
1822 (English)
The French physicist Augustin-Jean Fresnel developed the Fresnel lens in 1822. Originally intended for lighthouses, the design allows a short focal-length and large aperture without the problems of conventional lenses. It was later adopted for theatre spotlights.
1822
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