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 239

Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 102.8 mm
Facet Spacing: 0.508 mm
Fresnel Conjugate: Not Specified
Clear Aperture: 133.9 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 are positive Fresnel lenses used for?
Positive Fresnel lenses are used in solar energy concentration, optical sensors, display systems, and lighting solutions.
What is the focal length range for these lenses?
The focal length ranges from 6.3 mm to 764 mm, depending on the specific part number.
What material are the lenses made of?
The standard material used is PMMA (Polymethyl methacrylate), with a refractive index of 1.49.
What is the tolerance on the focal length?
The tolerance on the focal length is ± 5%, and the values are listed for 546 nm.
Are custom designs available?
Yes, special designs can be requested based on specific application needs.
What is the standard lens thickness?
The standard thickness is 1.8 mm, but other thicknesses (≥ 0.8 mm) are available upon request.
Can the lenses be trimmed or adjusted in size?
Yes, lenses can be trimmed to custom dimensions, with outer diameters up to 5-20 mm beyond the clear aperture.
How is the number of lines per mm determined?
The number of lines per mm can be calculated by taking the inverse of the facet spacing.
Are other materials available apart from PMMA?
Yes, other materials are available upon request for specific applications.
What wavelength is used to determine focal lengths?
Focal lengths are determined for a wavelength of 546 nm.

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

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