OSensoft Overview

Sensoft is a sophisticated software package that includes the features for hardware control of our instruments and the analysis of Shack-Hartmann images. Users can take advantage of a complete set of numerical and graphical tools resulting in a full diagnostics of the optical element under test at any wavelength.

We also have special versions of the software that can be used during the production process and give results for on-axis as well as off-axis test of the optical element(s).

 A highlight of Sensoft is the very extensive Help. Detailed information of all the essential aspects of optics, with detailed figures and explanations, are available at your fingertips.

 See also how you can learn about Shack-Hartmann using our Simulation packages.

According to your requirements, we can also study special software features for your specific application or for control of special hardware or develop special analysis software.

Sensoft features

- Precision: 3nm rms on the wavefront

- Max resolution: 100 x 100 spots (Limited by size of detector)

- Zernike polynomials: Annular, Standard or Fringe Zernikes as well as Seidel polynomial terms can be selected (more than 50 different terms)

- Output from analysis:  Focus, coma, spherical aberration, astigmatism, and other higher order aberrations (more than 50 terms), 80% EE, zonal and modal wavefront/mirror surface, and Strehl ratio

 - Graphical output: Spot diagrams, EE profile and distribution of residuals over the pupil. 3D and contour plot of zonal and modal wavefront (or mirror surface). MTF, PSF and EE profile from spot diagrams.

Sensoft diagnostics 

- Focal plane: given the optical element parameters, Sensoft suggests the changes required to correct defocus and spherical aberration

- Alignment of composite optical elements:  given the optical element parameters, Sensoft suggests the changes required to correct coma aberration

- Collimation: Sensoft can detect if the light source used for the test is collimated (or divergent or convergent)

- Mounting problems: support problems of the mountings can be identified from the contour plots of the wavefront after subtracting out the lower-order aberration terms.

  - Reduce noise due to air effects:  in the laboratory and in the manufacturing workshop as well as at the telescope, air-turbulence effects can limit the accuracy of the analysis. Sensoft  has the facility for averaging coefficients from multiple frames to improve the accuracy.