Shack–Hartmann wavefront sensor
A Shack–Hartmann (or Hartmann–Shack) wavefront sensor (SHWFS) is an optical instrument used for characterizing an imaging system.
The design of this sensor improves upon an
Shack–Hartmann sensors are used in astronomy to measure telescopes and in medicine to characterize eyes for corneal treatment of complex refractive errors.[9][10] Recently, Pamplona et al.[11] developed and patented[12] an inverse of the Shack–Hartmann system to measure one's eye lens aberrations. While Shack–Hartmann sensors measure the localized slope of the wavefront error using spot displacement in the sensor plane, Pamplona et al. replace the sensor plane with a high resolution visual display (e.g. a mobile phone screen) that displays spots that the user views through a lenslet array. The user then manually shifts the displayed spots (i.e. the generated wavefront) until the spots align. The magnitude of this shift provides data to estimate the first-order parameters such as radius of curvature and hence error due to defocus and spherical aberration.
References
- ^ a b Shack, R.V. (1971). Smith, F. Dow (ed.). "Production and use of a lenticular Hartmann screen". Journal of the Optical Society of America (Oral presentation). 61 (5). Ramada Inn, Tucson, Arizona: 656.
- ^ a b Hartmann, J. (1904). "Objektivuntersuchungen". Zeitschrift für Instrumentenkunde. 24. Berlin: Verlag von Julius Springer: 1–25, 33–47, 97–117.
- ^
T Nirmaier; G Pudasaini; J Bille (2003). "Very fast wave-front measurements at the human eye with a custom CMOS-based Hartmann-Shack sensor". Optics Express. 11 (21). OSA: 2704–2716. PMID 19471385.
- ^ LP Salles; DW de Lima Monteiro (2010). "Designing the response of an optical quad-cell as position-sensitive detector". IEEE Sensors Journal. 10 (2). IEEE: 286–293. .
- PMID 31465350.
- PMID 31465354.
- ^
Platt, Ben C.; Shack, Ronald (October 2001). "History and Principles of Shack-Hartmann Wavefront Sensing". Journal of Refractive Surgery. 17 (5): S573–7. PMID 11583233.
- ^ Scheiner, "Oculus, sive fundamentum opticum", Innsbruck 1619
- ^
E. Moreno-Barriuso & R. Navarro (2000). "Laser ray tracing versus Hartmann--Shack sensor for measuring optical aberrations in the human eye". JOSA A. 17 (6). Optical Society of America: 974–985. PMID 10850467.
- ^
Thomas Kohnen & Douglas D. Koch (2006). Cataract and refractive surgery, Volume 2. Springer. p. 55. ISBN 978-3-540-30795-2.
- ^
Pamplona, Vitor F.; Mohan, Ankit; Oliveira, Manuel M.; Raskar, Ramesh (2010). "NETRA: Interactive Display for Estimating Refractive Errors and Focal Range" (PDF). ACM Transactions on Graphics. 29 (4). hdl:1721.1/80392. Archived from the original(PDF) on 2012-10-12.
- ^ US patent 8783871, Pamplona, Vitor; Menezes de Oliveira, Manuel & Mohan, Ankit et al., "Near eye tool for refractive assessment", published 2013-01-31, issued 2014-07-22, assigned to Massachusetts Institute of Technology
See also
- Optical Telescope Element (used this sensor in development of the James Webb Space Telescope)