Frequently Asked Questions

The standard material used for these Fresnel lenses is PMMA (polymethyl methacrylate) with a refractive index of 1.49 and a relative dispersion of 58. Other materials are available upon request.

The focal lengths listed apply to 546 nm for PMMA and have a tolerance of ± 5%.

The standard thickness is 1.8 mm, but other thicknesses (≥ 0.8 mm) are possible upon request.

Yes, custom dimensions, special trimmings, or designs can be made upon request. Outside diameters may be up to 5–20 mm beyond the clear aperture.

To determine the number of lines per millimeter, divide 1 by the facet spacing value provided for each lens.

These lenses are optimized for 546 nm, but different focal lengths and material options can accommodate various wavelengths.

Yes, other materials are available upon request to meet specific application needs.

These lenses are commonly used in optical systems, lighting, magnification, and solar concentration due to their lightweight and efficient design.

Yes, special lens designs can be created based on customer specifications. Please contact ORAFOL for more details.

Yes, lenses with customized thicknesses are available. The standard is 1.8 mm, but other options starting from 0.8 mm can be requested.

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