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Solving the Steep Challenges of Coating Aspheres

Join us for a discussion about the challenges associated with coating the steep surfaces of aspheric lenses and key considerations to ensure that your lenses function as intended.

Achieve Powerful Aberration Correction while Minimizing Unwanted Reflections

We invite you to join this 30-minute webinar presented by Chris Cook, Technical Fellow at Edmund Optics, and Amy Frantz, Optical Design Engineer at Edmund Optics. At the end of this webinar, participants will have a strong understanding of:

  • The benefits of using aspheres instead of spherical lenses
  • Why it is often necessary for aspheres to have steep surfaces
  • How to overcome the challenges of coating aspheres
  • Key considerations to keep in mind when purchasing coated aspheres
Chris Cook
Chris Cook

Chris Cook is a Technical Fellow working in Edmund Optics’ Barrington, NJ, USA office. He specializes in the design and fabrication of novel optical coating platforms and processes for high precision, high versatility, high LDT, low-stress, and ultrafast turn-around production systems. His experience includes over 10 years at MIT Lincoln Laboratory Quantum Electronics group developing coatings for advanced solid-state and semiconductor lasers as well as MOEMs devices. He continued working in MOEMS device development as director of coatings development at AXSUN Technologies where he is credited for developing in-situ-stress-controlled coating techniques and bringing processes into production for telecom channel monitors and OCT (swept source) lasers. He received his MSEE in Electro Optical Engineering from Tufts University and his BS in Physics from Sonoma State University.

Amy Frantz
Amy Frantz

Amy Frantz is an Optical Design Engineer working in Edmund Optics’ Barrington, NJ, USA office. She designs a wide variety of optical components, evaluates manufacturing tolerances, and tolerances optical systems for as-built yield predictions. Amy spent nearly three years optimizing EO’s aspheric lens manufacturing and metrology procedures while investigating different manufacturing techniques. A focus on process improvement and training helped increase both capacity and efficiency in asphere manufacturing. Amy received her Bachelor’s degree from Juniata College in Physics and German, and her Master’s degree in Optics from the University of Rochester.




Technical Resources

Application Notes

Technical information and application examples including theoretical explanations, equations, graphical illustrations, and much more.

All About Aspheric Lenses

An Introduction to Optical Coatings

Anti-Reflection (AR) Coatings

How an Aspheric Lens is Made

Aspheric Lens Irregularity and Strehl Ratio


Informative corporate or instructional videos ranging from simple tips to application-based demonstrations of product advantages.

How an Aspheric Lens is Made 


Recorded webinars from Edmund Optics® experts on a wide range of optics and imaging topics.

High-End Asphere Design for Manufacturability 

Large Diameter Aspheres 

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