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Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Super-resolution Fluorescence Microscopy

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Imaging Biological Samples with Optical Microscopy

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Related Experiment Video

Updated: Jun 15, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
09:00

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

Highly concentrating Fresnel lenses.

E M Kritchman, A A Friesem, G Yekutieli

    Applied Optics
    |March 10, 2010
    PubMed
    Summary

    A novel convex Fresnel lens concentrates solar radiation efficiently, nearing theoretical limits. This new design outperforms traditional flat Fresnel lenses for solar energy applications.

    Area of Science:

    • Optics and Photonics
    • Renewable Energy Technologies

    Background:

    • Solar energy concentration is crucial for efficient energy conversion.
    • Traditional Fresnel lenses have limitations in achieving maximum solar concentration.

    Purpose of the Study:

    • To introduce and analyze a new convex Fresnel lens design.
    • To evaluate the solar concentrating performance of this novel lens.

    Main Methods:

    • Solving differential equations governing the lens's optical properties.
    • Employing ray tracing techniques to validate computed solutions.
    • Investigating lens efficiency and concentration performance.

    Main Results:

    • The new convex Fresnel lens achieves solar concentration close to the ultimate theoretical limit.

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    Related Experiment Videos

    Last Updated: Jun 15, 2026

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
    09:00

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

    Published on: October 27, 2017

    Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
    10:01

    Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging

    Published on: September 8, 2017

    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

  • Computed solutions were validated using ray tracing.
  • The novel lens demonstrates superior performance compared to flat Fresnel lenses.

    • Conclusions:

    • The developed convex Fresnel lens is highly effective for solar radiation concentration.
    • This new design offers significant advantages over existing flat Fresnel lens technology for solar energy applications.