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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 252

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Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 48.3 mm
Facet Spacing: 0.076 mm
Fresnel Conjugate: 48.3 mm
Clear Aperture: 63.3 mm
Thickness: 18 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 range of the Positive Fresnel Lenses?
The focal length range varies from 6.3 mm to 764.0 mm depending on the specific lens model.
What is the standard material used in these lenses?
The standard material used is PMMA (Polymethyl methacrylate), with a refractive index of 1.49.
Are other materials available for the lenses?
Yes, other materials are available upon request, tailored to specific project needs.
What is the typical thickness of the lenses?
The standard thickness is 1.8 mm or 2.5 mm, depending on the lens type, but custom thicknesses of 0.8 mm or more are also possible.
What is the facet spacing for these lenses?
The facet spacing ranges from 0.076 mm to 0.762 mm, depending on the lens model.
Can the outside dimensions be customized?
Yes, the outside diameter or size can extend up to 5-20 mm beyond the clear aperture, with special dimensions available upon request.
How is the number of lines per mm determined?
The number of lines per mm is calculated using 1/facet spacing.
Are special designs available for custom applications?
Yes, special designs can be created upon request to meet specific project requirements.
What wavelength is the focal length based on?
The focal lengths listed apply to 546 nm for PMMA, with a tolerance of ±5%.
Can the lenses handle larger apertures?
Yes, lenses can be produced with clear apertures up to 615.7 mm or even larger upon request.

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

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