Optocraft GmbH



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Am Weichselgarten 7

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FIGURE 1. Schematic shows sensor-system configurations for measurement in single (SHSInspect 1Xpass; a) and double pass (SHSInspect 2Xpass; b).

Optics Characterization: Shack-Hartmann wavefront sensor enables flexible characterization of lenses

A Shack-Hartmann wavefront sensor can replace an interferometer or stylus profilometer for measuring lens properties in a lab or production environment.
FIGURE 1. Glass lenses for a mobile-phone camera (bottom) often exhibit high distortion, as indicated by a digital color-­coded map (shown corrected for tilt and focus errors) of the ­wavefront distortion in transmission (top; up to -10ë in the blue and more than +30ë in the red regions of the map). However, several ­lenses can be combined to complement each other optically, and the whole system will sum to give minimal optical distortion.

WAVEFRONT SENSING: Shack-Hartmann wavefront sensors move into new applications

Recent developments in measurement algorithms and accuracy have increased the dynamic range and consistency of Shack-Hartmann sensors. These sensors are now finding use as proof...

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