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    The Hartmann detection technique originated in 1904, when Johannes Hartmann published a technique for measuring an objective lens using a metal mask with holes. In 1971, Roland Shack used a microlens array instead of holes, improving the light efficiency of the technique so that it could be applied to astronomical optics. This principle is therefore called the Shack-Hartmann wavefront detection technique.

    SHSLab uses this geometric optical Shack-Hartmann principle to measure wavefronts. The microlens array converts the local tilt of the light beam into a series of focus points on the camera. Through numerical integration, the deviation of the light point from the reference point can be calculated, and finally the relationship between the wavefront and the deviation of these light points is obtained. In principle, this technique allows the use of a single-frame measurement image to achieve wavefront measurement, so it is very fast and not affected by noise such as environmental vibration.

SHSWorks software has powerful analytical capabilities. Its unique wavefront reconstruction algorithm enables SHSLab to measure wavefronts with large linear dynamic range and small local curvature, and to analyze a variety of optical parameters such as Zernike coefficients, PSF/MTF, laser parameters and diopter.

Through excellent hardware (SHSCam) and software (SHSWorks), SHSLab provides superior accuracy, dynamic range and flexibility.