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Knight Optical
1130 Ten Rod Rd.
Suite D102
North Kingstown, RI 02852
United States

Full Company Details
Phone: +1 401-583-7846
Fax: +1 401-583-7851
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Knight Optical

Fresnel Lenses
  • Type: Lenses
  • Lens Category: Spherical Lens
  • Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research
  • Material: PMMA Acrylic
  • Center Thickness: ±0.2 mm
  • Clear Aperture: Nominal
  • Standard Range F/L: ±5%

Knight Optical's Fresnel Lenses for Retinal Imaging.

Our Fresnel lenses consist of a flat surface with interspace concentric steps whereby each step corresponds to the surface of a conventional lenses. PMMA acrylic is a preferred material type used for retinal imaging Fresnel lenses. The Fresnel lenses are used as part of a system where its multi-focal length provide a multiple in and out of focus image that provide a magnified image of the eye.
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