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Wavefront Sensors

Photonics Spectra
Dec 2010
TRIOPTICS GmbHRequest Info
 
The Shack-Hartmann WaveSensor wavefront sensors made by Trioptics GmbH measure the wavefront and lens shape of spherical and aspherical lenses in real time. High accuracy and a large dynamic range of up to >1500 λ allow the measurement of highly aspherical lenses. All four models exhibit tilt measurement sensitivity of <1 μrad, repeatability of <λ/200 rms and absolute accuracy of <λ/20 rms. All measure <74 x 100 x 144 mm and operate over a wavelength range of 350 to 1100 nm. The 150 model has aperture dimensions of 15 x 15 mm, 150 x 150 lenslets and a focus dynamic range of >1500 λ, and it weighs <1000 g. The comprehensive software supplied with the sensors provides various ways of analyzing and displaying the wavefront data, including real-time Zernike analysis, modulation transfer function and point spread function calculation.


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GLOSSARY
aperture
An opening or hole through which radiation or matter may pass.
lens
A transparent optical component consisting of one or more pieces of optical glass with surfaces so curved (usually spherical) that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object.
repeatability
The degree to which a predetermined or previous setting of a positioning device can be duplicated by observance of the optical phenomena.
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