Frequently Asked Questions

The standard material used for the Fresnel lenses is PMMA, with a refractive index of 1.49 and relative dispersion of 58. Other materials are available upon request.

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

Yes, the standard thickness is 1.8 mm, but other thicknesses (≥ 0.8 mm) are possible based on specific requirements.

Yes, custom dimensions or special trimmings can be realized upon request. Standard lenses may extend up to 5–20 mm beyond the clear aperture.

The number of lines per mm can be calculated by using 1 divided by the facet spacing of the lens.

Yes, special designs can be created on request, depending on your specific needs and applications.

The plano conjugate for most of the lenses is infinity, ensuring optimal focus management.

Yes, all specifications are subject to change without prior notice.

These Fresnel lenses are designed for optical systems, imaging, and light focusing applications across various industries.

While the specifications apply to 546 nm, the lenses may be used in other environments with some variations in focal length. Custom designs are also available for specific wavelengths.

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