Aspheric surface metrology and interferometry represent a cornerstone in the advancement of modern optical systems, where precise measurement and fabrication of non-spherical optical components are ...
Dynamic interferometry allows precise optical measurements to be made on the factory floor. Steve Martinek explains the principle and technology behind the technique. The high-precision interferometry ...
Manufacturing a precision surface requires a balance between satisfying the optimum quality requirements at the minimum cost. Steve Martinek summarizes the challenges of increasing the precision ...
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Almost a century ago the concept of measuring surface roughness started as a way to stop disputes and uncertainty between buyers and manufacturers. Today, it is a common identifier that is utilized ...
The beam of a laser is expanded by a telescope (expander) to illuminate a point source array (PSA). The PSA contains diffractive microlenses on its front side that focus the incoming light onto a ...
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Powell and Stetson 1 have shown that holography can be used to study the vibration modes of a surface. The technique they employed was to record a hologram while the surface was actually vibrating.
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