Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Aspheres Stand Up to the Test

Photonics Spectra
Mar 1998
H. Philip Stahl

As optical designers tackle the challenge of improving system performance while at the same time reducing overall package size, aspheric optics undoubtedly will grow in significance. Unfortunately, just because aspheres are easy to design does not mean they are easy to manufacture. In routinizing the manufacturing process, optical testing represents an important first step.
Aspheric surfaces can be troublesome to test for several reasons. Among them, the need to increase the aspheric departure of an asphere with fewer residual errors is a hindrance to designers. As any engineer knows, it is difficult to measure large numbers with such precision.
With these considerations in mind, there are three basic approaches for testing aspheres: measuring the actual shape, the aspheric departure from a base sphere or the null departure from the desired aspheric shape.

Feature ArticlesFeaturesindustrial

Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
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.