Knight Optical Fresnel Lenses for Magnification Displays |
28/10/2017 |
Knight Optical can offer you Stock and Custom Fresnel Lenses, for use within Magnification Displays in a range of materials such as PMMA Acrylic and Borosilicate.
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 of the Magnification Displays as it is very lightweight when used in a large size. Fresnel lenses is a common focal length equivalent to a traditional lens, but with a fraction of the thickness. Additionally, because the lens is so thin little light is lost by absorption.
This stock range of fresnel lenses range from 5mm to 650mm aperture and contains both standard and precision ranges of fresnel lenses. The precision range has tighter tolerances with improved surface quality. These ranges are uncoated however antireflective coatings can be applied at short notice.
Typical specs:
Material: PMMA Acrylic/ Borosilicate
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Center thickness: |
+/- 0.2mm |
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Clear aperture: |
Nominal |
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Focal length: |
|
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Design condition: |
Parallel light on grooved side |
Options available:
- Cutting down of stock lenses to custom sizes.
- Antireflective coatings
- Other focal lengths and aperture sizes available at short notice.
All our Fresnel Lenses are fully inspected on their quality in our ISO 9001 certified, state-of-the-art Metrology laboratory, using our and Starrett AV300 video microscope for high accurate diameter testing. This allows us to work to the highest QA standards and meet the tolerance specifications on these precision components.
Contact our technical sales team to discover how Knight Optical’s high quality Fresnel Lenses and superior service can improve your instrumentation and supply chain experience.
Click Here for the contact details of Knight Optical (UK) Ltd
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