Easy to use Computer Generated Holograms for Complex Surface Metrology

Facebook X LinkedIn Email
Author: Dr. Florian Hudelist
Tuesday, June 1, 2021

There are many metrology methods on the market for testing aspheres. The method with one of the highest known accuracies is based on a Fizeau interferometer, in combination with a CGH. We describe a so called DFNL type CGH, having the CGH diffractive structures integrated into the Fizeau reference surface, which provides a solution for measuring complex shapes that is comparable to the traditional methods used for testing spheres. Compared to a standard CGH, the DFNL simplifies the hardware and alignment steps required to measure a complex optical surface.

Download White Paper
File: Whitepaper_DIOPTIC_DFNL.pdf (991.59 KB)
To download this white paper, please complete the *required fields before clicking the "Download" button.
Your contact information
* First Name:
* Last Name:
* Email Address:
* Company:
* Country:

When you click "Download", you agree that your personal contact information may be shared with DIOPTIC GmbH and they may contact you about their products and services in the future. You also agree that Photonics Media may contact you with information related to this request, and that you have read and accept our Privacy Policy and Terms and Conditions of Use.

Register or login to auto-populate this form:
Login Register
* Required
manufacturing equipment for photonic componentsoptical components & softwaretest & measurement equipmentinspectionidentificationnondestructive testingquality controlinterferometrysurface metrologyCGHCGH Null Llensaspheresfreeform surfacesinterferometersDFNLreference opticstransmission spherescylinder lenseswavefront
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.