Thumbnail of Positive Fresnel Lens SC 235 photo 1
Thumbnail of Positive Fresnel Lens SC 235 photo 2
Thumbnail of Positive Fresnel Lens SC 235 photo 3

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 meeting 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 235

Visit the ORAFOL Fresnel Optics Store

Specifications

Material: PMMA Acrylic
Lens Type: Non-Imaging - Spot, Positive
Focal Length: 50.8 mm
Facet Spacing: 0.229 mm
Fresnel Conjugate: Not Specified
Clear Aperture: 77 mm
Thickness: 1.8 mm

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

Document icon Download Data Sheet Download icon

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 these Fresnel lenses?
The focal lengths range from 6.3 mm to 764.0 mm, with specific values depending on the lens model.
What is the standard thickness of the lenses?
The standard thickness is 1.8 mm, with some models having a thickness of 2.5 mm. Custom thicknesses of 0.8 mm or greater are available upon request.
What material are the lenses made from?
The lenses are made from PMMA (Polymethyl Methacrylate) with a refractive index of 1.49 and relative dispersion of 58.
What is the facet spacing of the lenses?
The facet spacing varies from 0.076 mm to 0.762 mm, depending on the model.
Can the lenses be customized for specific applications?
Yes, special designs, thicknesses, and dimensions can be customized upon request.
What is the clear aperture size for these lenses?
The clear aperture varies by model, ranging from 6.4 mm to 615.7 mm, with specific values for each lens.
What is the focal length tolerance?
The focal length tolerance is ±5% at 546 nm for PMMA material.
Can these lenses be made from materials other than PMMA?
Yes, other materials are available upon request, depending on the application requirements.
What is the maximum outside diameter or size of the lenses?
The outside diameter or size can be up to 5-20 mm beyond the clear aperture, but special dimensions or trimmings are also possible.
How do you determine the number of lines per mm for the lenses?
The number of lines per mm can be determined by using 1 divided by the facet spacing.

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

Similar Products

Request Quote