Fresnel Numbers
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Frequently Asked Questions
Where can I buy Fresnel lenses?
The RP Photonics Buyer’s Guide contains 11 suppliers for Fresnel lenses. Among them: Shanghai Optics offers Fresnel lenses Fresnel lenses made of plastics for various applications – including custom versions tailored to your needs. These sharing buttons are implemented in a privacy-friendly way!
Why choose Fresnel technologies silicone optics?
Our silicone optics are designed to handle the most extreme environments. Fresnel Technologies offers six lines of standard passive infrared lens arrays. We make a variety of stock Fresnel optical components to meet your needs. Our stock micro-lens arrays are well suited for use as optical diffusers.
What is the Fresnel number in optics?
The Fresnel number is a useful concept in physical optics. Conceptually, it is the number of half-period zones in the wavefront amplitude, counted from the center to the edge of the aperture, as seen from the observation point (the center of the imaging screen), where a half-period zone is defined so that...