Product category:
Electric Linear Actuators
News Release from: Lambda Photometrics | Subject: Verifire Asphere Fiseau interferometer
Edited by the Engineeringtalk Editorial
Team on 20 April 2007
Interferometer handles aspheres
The Verifire Asphere is a complete system for measuring rotationally symmetric aspheres.
Zygo has introduced the third high-end Fiseau interferometer in the Verifire series Following on from the Verifire AT, which reduced coherent artefact issues and the Verifire MST which can measure multiple surfaces in transmission simultaneously, the Verifire Asphere is a complete system for measuring rotationally symmetric aspheres, which form the majority of aspheres produced
This article was originally published on Engineeringtalk on 9 Jun 2008 at 8.00am (UK)
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Using existing core technologies used in Zygo's Verifire AT and ZMI displacement interferometer systems, coupled with high-precision motorised stages and standard transmission spheres, the Verifire Asphere is able to measure aspheric surfaces with the following performance: 60nm form uncertainty; and 3nm rms repeatability; 0.08mm height resolution; and 6 to 10 minutes total average cycle time (typical).
Test parts can be made of various materials including glass, metal, semiconductors, ceramics and plastics provided that they have a shiny, specular surface and a measurable central apex.
Parts can range in diameter from 1 to 130mm and up to 5kg in weight.
Also, the Verifire can measure more than just mild aspheres, test parts can deviate from a perfect sphere by up to 800 microns.
As well as its noncontact 3D measurement of aspheric surfaces the Verifire Asphere system also is a high-end system for measuring flats, spheres and radius of curvature. Request a free brochure from Lambda Photometrics ...
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