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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 241

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Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 51 mm
Facet Spacing: 0.762 mm
Fresnel Conjugate: 51 mm
Clear Aperture: 109.8 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 range of the positive Fresnel lenses?
The focal length range spans 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 is PMMA (Polymethyl Methacrylate) with a refractive index of 1.49 and a relative dispersion of 58.
What is the facet spacing for these lenses?
Facet spacing varies from 0.076 mm to 0.762 mm, depending on the model.
What is the thickness of the Fresnel lenses?
The standard thickness is 1.8 mm for most lenses, with some models available in 2.5 mm. Custom thicknesses starting from 0.8 mm are also possible.
Are custom designs available for these lenses?
Yes, special designs, dimensions, and trimmings can be provided upon request.
What is the tolerance on focal lengths for these lenses?
Focal lengths have a tolerance of ±5% at a wavelength of 546 nm for PMMA lenses.
How is the clear aperture determined?
The clear aperture typically ranges from 6.4 mm to 600 mm, varying based on the lens model.
Are other materials besides PMMA available?
Yes, other materials can be used based on customer requirements.
What is the purpose of the plano and Fresnel conjugates?
The plano conjugate is at infinity, while the Fresnel conjugate allows for precise light management in specific applications.
What are the applications of these Fresnel lenses?
These lenses are widely used in optical systems, solar concentrators, imaging devices, and other light-managing applications.

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

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