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fresnel lens

/freɪˈnɛl lɛnz/

翻译: 菲涅尔透镜是一种由一系列同心槽纹或棱脊构成的紧凑型透镜,最初为灯塔设计,用于将光线聚焦成强光束,如今广泛用于投影仪、放大镜和太阳能聚光器等光学设备。

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/freɪˈnɛl lɛnz/C1formaltechnical
  • zh菲涅尔透镜是一种由一系列同心槽纹或棱脊构成的紧凑型透镜,最初为灯塔设计,用于将光线聚焦成强光束,如今广泛用于投影仪、放大镜和太阳能聚光器等光学设备。

A type of compact lens consisting of a series of concentric grooves or ridges, originally developed for lighthouses to focus light into a powerful beam, and now used in various optical devices such as projectors, magnifiers, and solar concentrators.

  1. Optical deviceC1formal

    A type of compact lens consisting of a series of concentric grooves, used to focus light, commonly found in lighthouses and projectors.

    zh光学装置

    • The lighthouse was equipped with a powerful Fresnel lens.
    • Fresnel lenses are used in overhead projectors to focus light.
    • The design of the Fresnel lens allows it to be thinner than a conventional lens.