Shack Hartmann Wavefront Sensors
Shack Hartmann wavefront sensors are used for the measurement of optical wavefronts. A Shack Hartmann sensor consists of a two-dimensional microlens array focussing on a CCD-Chip. Each microlens on the array provides a focus spot on the CCD-Chip. The picture created by these focus spots is called the Hartmann pattern.
Shack Hartmann wavefront sensors are used for the measurement of optical wavefronts.A Shack Hartmann sensor consists of a two-dimensional microlens array focussing on a CCD-Chip. Each microlens on the array provides a focus spot on the CCD-Chip. The picture created by these focus spots is called the Hartmann pattern.
The position of each focus spot is displaced by local wavefront aberrations. The deflection of these spots corresponds to the slope of the wavefront hitting the microlenses.
Through the analysis of the periodical structure of the spots, the Shack Hartmann Sensor allows to measure both intensity distribution and phase distorsion in real time and high accuracy. They are widely used to compensate for phase distorsions in metrology, diagnostic, and adaptive optical systems.
If you are interested in more detailed information about the microlenses used in Shack Hartmann Wavefront Sensors, please have a look at our Technical Datasheet #11.
SUSS MicroOptics provides circular, cylindrical, and square-type microlens arrays for high precision wavefront sensing. Many items are available in our Online Shop.
We also provide optical designs for wavefront sensing systems and assist in finding suitable solutions for all types of measurement and diagnostics applications.
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