Difference between revisions of "fresnel lens (Q3192)"

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A lens of large aperture and short focal length, with circular ribs and a diffusing surface that casts a soft-edged beam of light.

(‎Changed claim: Canon Event Label (P270): Fresnel lens)
 
Property / inventor
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Property / inventor: Augustin-Jean Fresnel / rank
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Normal rank

Revision as of 07:21, 31 July 2023

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.

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    105
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    141411
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    2304
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    3 August 2013
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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)
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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.
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    Timeline

     

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