Positive Fresnel Lens SC 237
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 237
Specifications |
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|---|---|
| Material: | PMMA Acrylic |
| Lens Type: | Non-Imaging - Spot, Positive |
| Focal Length: | 77.5 mm |
| Facet Spacing: | 0.254 mm |
| Fresnel Conjugate: | infinite mm |
| Clear Aperture: | 59.4 mm |
| Thickness: | 1.8 mm |
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
For pricing, technical or any other questions please contact the supplier
- No registration required
- No markups, no fees
- Direct contact with supplier
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How to order?
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Ships from:
Germany
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Sold by:
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On FindLight:
since 2020
Frequently Asked Questions
Positive Fresnel lenses are commonly used in solar concentrators, projection systems, magnifiers, and illumination systems. They are ideal for applications requiring efficient light management and col
The standard material for Positive Fresnel Lenses is PMMA (Polymethyl Methacrylate), which has a refractive index of 1.49. Other materials are available upon request.
The listed focal lengths apply to 546 nm for PMMA material with a tolerance of ±5%. These values can vary slightly depending on the material used and specific design requirements.
The standard thickness of Positive Fresnel Lenses is 1.8 mm, but other thickness options, starting from 0.8 mm, can be provided upon request.
Yes, special designs and dimensions are available upon request. Lenses can be customized in terms of size, focal length, and thickness to meet specific project needs.
The clear aperture varies with the model. It ranges from small sizes like 6.4 mm to large apertures of up to 615.7 mm, depending on the focal length.
Positive Fresnel Lenses are optimized for a wavelength of 546 nm. Custom designs for other wavelengths are available upon request.
The facet spacing depends on the specific lens model and can range from 0.076 mm to 0.762 mm. The number of lines per millimeter can be determined using the inverse of the facet spacing.
While PMMA has good environmental stability, additional coatings or materials can be used to enhance performance in high-temperature or outdoor environments. Custom options are available based on application requirements.
The tolerance for focal lengths is typically ±5%, and the outer diameter or size can extend beyond the clear aperture by 5-20 mm. Further customization can be done on request.