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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 268

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Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 304.6 mm
Facet Spacing: 0.508 mm
Fresnel Conjugate: Not Specified
Clear Aperture: 291.9 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 typical focal length tolerance for the Fresnel lenses?
The typical focal length tolerance for the lenses is ±5%, based on 546 nm for PMMA material.
What is the standard material used for these Fresnel lenses?
The standard material used is PMMA (Polymethyl Methacrylate) with a refractive index of 1.49 and a relative dispersion of 58.
Are other materials available for these lenses?
Yes, other materials can be used upon request, depending on the specific application requirements.
What is the thickness of the lenses, and can it be customized?
The standard thickness is 1.8 mm, but other thicknesses starting from 0.8 mm are available upon request.
What are the focal lengths listed based on?
The focal lengths listed are based on a wavelength of 546 nm for PMMA material.
Can these lenses be customized in terms of size and shape?
Yes, outside dimensions may vary by up to 5–20 mm beyond the clear aperture, and custom dimensions or special trimmings are available upon request.
How can I calculate the number of lines per mm for the lenses?
The number of lines per mm can be calculated using the formula 1/facet spacing.
Are special lens designs possible?
Yes, special designs can be created upon request to meet specific project or application requirements.
What is the conjugate distance for these lenses?
These lenses are designed with infinite conjugate distances for most applications, ensuring optimal performance.
Can the lens specifications change over time?
Yes, all specifications are subject to change without prior notice, so it's recommended to verify the latest details before placing an order.

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

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