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Description

Our SC series lenses are crafted through advanced injection molding and compression molding technologies, insuring a superior surface quality and by that optical performance.

The unique design of our polymer Fresnel lenses not only ensures optimal optical performance but also offers significant advantages. Compared to traditional glass lenses our lenses provide substantial weight, space and cost reductions making them indispensable in lighting, sensor, and machine vision applications.

At ORAFOL Fresnel Optics we take pride in offering comprehensive solutions, from optical design and prototyping to tooling and high-volume production. Whether you choose one of our standard products or opt for a custom solution, including high-volume production, we are committed to meet your specific requirements.

Customization options include precise trimming to desired shape, changing of thickness (>0.8 mm) and material (PMMA, Polycarbonate, silicone on glass), optical coating (reflective and anti-reflective coating of various kinds) and combination with other components (diffusive microstructures, microlens arrays) directly into the plano side of the lens. A completely new design of the microstructure specificly made for your application including tooling and prototyping is also possible. Contact us for details. 

Positive Fresnel Lens SC 211

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Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 57.8 mm
Facet Spacing: 0.076 mm
Fresnel Conjugate: 263.9 mm
Clear Aperture: 88.4 mm
Thickness: 1.8 mm

Got questions about specs? Use the inquiry form to ask.

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Features

  • Lightweight, volume-efficient design
  • High apertures and optically effective surfaces
  • Cost-effective solutions for diverse applications
  • Expertly crafted with cutting-edge technology
  • Backed by ORAFOL Fresnel Optics' legacy of top-quality manufacturing

Applications

  • Advanced lighting applications
  • Optical sensor technology
  • Machine vision systems

Frequently Asked Questions

What is the focal length tolerance for these lenses?
The focal lengths listed apply to 546 nm for PMMA with a tolerance of ± 5%.
What is the standard material used for these Fresnel lenses?
The standard material used is PMMA, with a refractive index of 1.49 and a relative dispersion of 58.
Can the thickness of the lenses be customized?
Yes, the standard thickness is 1.8 mm, but other thicknesses (≥ 0.8 mm) are available upon request.
Are special designs possible for specific applications?
Special designs and dimensions can be realized upon request, depending on customer requirements.
How do I determine the number of lines per mm for these lenses?
You can determine the number of lines per mm by using the inverse of the facet spacing.
What is the typical clear aperture size for these lenses?
The clear aperture size varies between lenses, ranging from 6.4 mm to 615.7 mm, depending on the focal length.
Can different materials be used other than PMMA?
Yes, other materials are available upon request to suit different application needs.
Are the dimensions of the lenses customizable?
Yes, the outside diameter or size can be up to 5–20 mm beyond the clear aperture, and special dimensions are available on request.
Do these lenses work at wavelengths other than 546 nm?
While the focal lengths are listed for 546 nm, these lenses can be used at other wavelengths with different focal length tolerances.
How durable are these Fresnel lenses?
The lenses are engineered for high precision, and the PMMA material offers durability, but specific environmental conditions should be considered.

Got more questions? Use the inquiry form to ask the supplier directly.

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