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BREXIT UPDATE: Knight Optical will continue to provide quality assured service for all your optical requirements both custom & stock. We will handle all requirements caused by the new regulations.

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Please note;
Due to the size of some of these lenses, we may need charge an additional fee for shipping. If you would like further details, please send your request to [email protected]

Knight Optical provide specially designed Fresnel lenses of reverse configuration making them ideal for use in Solar Concentration such as concentration photovoltaic (CPV) application. They are designed in such a way that the plano side faces the sun and the Fresnel surface faces the photovoltaic cells to focus the light. Our Standard Fresnel Lenses can also be used in this manner, but are not optimised for this application so typically used in the opposite way.

A larger surface can be assembled using single lenses as segments, making it ideal for solar concentration.

Our stock range are manufactured from PMMA, and range from 100mmx100mm to 1400mmx1050mm.

Centre Thickness:
Clear Aperture:
Focal Length:
Design Condition:
PMMA Acrylic
+/- 0.5mm
± 5%
Parallel light on grooved side

Cutting down of stock lenses to custom sizes.
Antireflective coatings.
Other focal lengths and aperture sizes available at short notice.

13 Items

Name Focal Length (mm) Clear Aperture (mm) Overall Size (mm) Facet Width (mm) Thickness (mm) Type Price Buy
LFS0625 5 25 dia 25x25 0.1 2 Non-Solar (Circular)
LFS1050 10 50 dia 50x50 0.1 2 Non-Solar (Circular)
LFS1575 15 75 dia 75x75 0.1 2 Non-Solar (Circular)
LFS50100 50 100 dia 100x100 0.3 2 Non-Solar (Circular)
LFS150283 150 282 200x200 0.5 2 Solar (Circular)
LFS150150 150 150x500 150x500 0.3 2 Solar (Linear)
LFS200354 200 353 dia 250x250 0.3 2 Solar (Circular)
LFS200200 200 200x500 200x500 0.3 2 Solar (Linear)
LFS300425 300 424 dia 300x300 0.3 2 Solar (Circular)
LFS400780 400 672 dia 450x500 0.3 2 Solar (Circular)
LFS500500 500 500X500 500X500 0.3 3 Solar (Linear)
LFS600566 600 565 dia 400x400 0.5 2 Solar (Circular)
LFS100003 1000 500x500 500x500 0.3 3 Solar (Linear)

13 Items


Reverse Configuration (Solar) Fresnel Lenses

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