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02 Jun 2021 • 

Freeform Optics for Imaging: Mid-Spatial Frequency Errors

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Residual mid-spatial frequency (MSF) surface errors are common byproducts of the computer-controlled subaperture manufacturing techniques needed for .. Read more fabrication of freeform optics. Falling between “low-frequency” form errors and “high-frequency” surface roughness, MSF “waviness” errors can affect optical performance in unexpected ways. In this presentation, Thomas Suleski, Ph.D., provides an overview of MSF surface error signatures, specification methods, and performance impacts. Example approaches and challenges for modeling, specification, and mitigation of MSF surface errors are discussed, with a particular focus on the specification and impacts of anisotropic MSF error distributions. Who should attend: Optical designers, engineers, those involved in the manufacture of optical systems, those involved in precision technologies, and anyone who is interested in current methods for freeform optics design and production. Freeform optics encompasses a range of disciplines and industries, including transportation, semiconductor, displays, lighting, IR and defense, photovoltaics, remote sensing, and even quantum optics.

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