QED’s ASI(Q), created by the company that revolutionized stitching, brings you even greater ability to make and measure complex optics.

aspheric stitching interferometer with QIS - ASI(Q)With the ASI(Q), optics manufacturers can measure an even wider range of aspheres with up to 1000 waves of departure, with more accuracy and faster, without relying on dedicated, expensive null-optics. The ASI(Q), completely designed and engineered by QED Technologies, takes asphere metrology to the next level of performance.

The ASI(Q) is powered by Variable Optical Null Technology. and QED’s latest innovation, QIS, the QED Interferometer for Stitching. Variable Optical Null (VON) technology enabled the measurement of steep aspheres. The VON’s opto-mechanical subsystem generates a wavefront that closely matches the local aspheric shape of each subaperture being measured. This technique produces an interferogram with reduced fringe density compared with one using a normal spherical wavefront.

QIS is optimized for stitching and allows the user to collect high quality data on parts with even higher fringe densities and shorter radii, with better resolution and with less retrace error. The ASI(Q) allows users to measure high departure aspheres over the full aperture. Contact us if you would like to learn more about the ASI(Q) metrology system.

Aspheres with 1000 waves of departure from best fit sphere... no problem. 


The Stitching Advantage

Stitching technology has four major advantages over standard interferometry:

  1. larger field of view—you can see “more” of the surface
  2. higher lateral spatial frequencies—you can see a better picture of the surface
  3. improved accuracy—you can feel confident in the quality of your results because the unit automatically calibrates systematic instrument errors
  4. aspheric measurements—you can measure aspheres without null lenses

The "Q" Advantage

QED’s ASI(Q), is the latest innovation in precision optics metrology, brought to you by QED Technologies. The ASI(Q), completely designed, engineered and built by QED, is powered by QIS, the QED interferometer for stitching. Optimized for stitching, QIS enables you to measure more parts, measure them better, and say yes to more complex projects. QED innovation and ingenuity inside, brings expanded capabilities and new versatility to the ASI(Q). QIS is available on the new ASI(Q) platform, or as a field upgrade to existing ASI and SSI-A platforms.

ASI(Q) Downloads