September 18th webcast - Surface measurements in hostile environments with instantaneous phase measurement
September 18, 2019
Using interference patterns to gauge the quality of optics is a technique that dates back nearly two centuries. Join industry expert, inventor, and 4D Technology co-founder Neal Brock, for a look at remarkable progress and achievements in optical metrology, culminating in the answers to questions like:
How are the precision optics in the largest, most powerful telescopes in the world tested?
How do you make sub-nanometer measurements of a telescope mirror, that’s too big to build a vibration isolation table for?
How do you measure wavefront quality of an optical system that’s inside a cryogenic chamber?
How do you test an optic with parallel surfaces that can mutually interfere?
How do you measure the sub-micron shape change of a 3m tall carbon graphite segmented telescope support structure?
How do you measure the minuscule shape changes caused by vibration of a space telescope mirror?
How do measure the surface roughness of an optic too big to fit under your interference microscope?
How do you find defects on a coated plastic film, as it whirs by at production speeds?
How do you make high precision 3D measurements of wear on a turbine engine, using a handheld gauge— while standing on the flightline?
It’s been a long and interesting journey—from interferometers for measuring the James Webb Space Telescope, to an interferometer that can fit in the palm of your hand. Join us on a guided tour, reviewing some of the world’s most challenging metrology situations, and the remarkable engineering that conquered them.
Director, New Technology Development
Watch on any mobile device – phone or tablet - or listen while you drive to work!