Development of an optical system calibration and alignment methodology using Shack-Hartmann wavefront sensor

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Date

2013

Author

Adil, Fatime Zehra

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Shack-Hartmann wavefront sensors are commonly used in optical alignment, ophthalmology, astronomy, adaptive optics and commercial optical testing. Wavefront error measurement yields Zernike polynomials which provide useful data for alignment correction calculations. In this thesis a practical alignment method of a helmet visor is proposed based on the wavefront error measurements. The optical system is modeled in Zemax software in order to collect the Zernike polynomial data necessary to relate the error measurements to the positioning of the visor. An artificial neural network based computer program is designed and trained with the data obtained from Zernike simulation in Zemax software and then the program is able to find how to invert the misalignments in the system. The performance of this alignment correction method is compared with the optical test setup measurements.

Subject Keywords

Holography., Detectors., Optical detectors., Optoelectronic devices., Polynomials.

URI

http://etd.lib.metu.edu.tr/upload/12615591/index.pdf
https://hdl.handle.net/11511/22386

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

F. Z. Adil, “Development of an optical system calibration and alignment methodology using Shack-Hartmann wavefront sensor,” M.S. - Master of Science, Middle East Technical University, 2013.