Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Optical Systems Created with Microlenses

Photonics Spectra
Mar 2000
A research team from the Universität Mannheim in Germany has produced micro-objectives with a large numerical aperture by stacking gradient-index microlenses. The results, which were published in the Dec. 1, 1999, issue of Applied Optics, suggest that the technique may bring the corrective advantages of ion-exchanged microlenses to optical storage and confocal microscopy.

The researchers designed the micro-objectives with a ray-trace program they developed. The resolution of the 0.45-NA three-lens stacked objective was tested with a circular 2-µm-linewidth test pattern and a Ronchi grating with 2- to 1-µm linewidths.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!