Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Mohamed Bichra"'
Autor:
Stefan Sinzinger, Gufran S. Khan, Kamal K. Pant, Dali R. Burada, Chandra Shakher, Mohamed Bichra, Vinod Mishra
Publikováno v:
Advanced Optical Technologies. 8:203-215
The applications of freeform optical surfaces in modern optical systems are providing unique solutions over rotationally symmetric surfaces. These surfaces offer higher degrees of freedom to the designer to enhance the high-end performance of the opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::352157cf93208bff4d967371da08e693
https://doi.org/10.1515/aot-2018-0072
https://doi.org/10.1515/aot-2018-0072
Autor:
Mohamed Bichra, Maik Rosenberger, Christian Pfützenreuter, Paul-Gerald Dittrich, Gunther Notni
Publikováno v:
Photonics and Education in Measurement Science 2019.
Filter-On-Chip CMOS sensor equipped cameras are a convenient, reliable and affordable approach for the parallel acquisition of spatial and spectral information. The combination of pixel-arranged spectral filter matrices on CMOS sensors increases thei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4f01c073b22d373f0d6afd825e51e63
https://doi.org/10.1117/12.2527871
https://doi.org/10.1117/12.2527871
Autor:
Daniel Stiehler, Paul-Gerald Dittrich, Gunther Notni, Lisa Radtke, Mohamed Bichra, Christian Pfützenreuter, Maik Rosenberger
Publikováno v:
Algorithms, Technologies, and Applications for Multispectral and Hyperspectral Imagery XXV.
Multispectral resolving filter-on-chip snapshot-mosaic CMOS cameras are a convenient, reliable and affordable approach for the parallel acquisition of spatial and spectral information. The combination of pixel-arranged spectral filter matrices on CMO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9a826b2f96aeb9a12c55b7a1f2d129d
https://doi.org/10.1117/12.2518842
https://doi.org/10.1117/12.2518842
Autor:
Martin Hoffmann, Lutz Müller, Mohamed Bichra, Thomas Dipl.-Ing. Meinecke, Stefan Sinzinger, Patrick Fesser
Publikováno v:
Applied optics. 57(14)
The in-line characterization of freeform optical elements during the production cycle is challenging. Recently, we presented a compact sensor setup for the characterization of the wavefront generated by freeform optical elements in transmission. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85a8c550e76a9b8d23811cb299d48381
https://pubmed.ncbi.nlm.nih.gov/29791347
https://pubmed.ncbi.nlm.nih.gov/29791347
Autor:
Gufran S. Khan, Vinod Mishra, Stefan Sinzinger, Mohamed Bichra, Chandra Shakher, Dali R. Burada, Kamal K. Pant
Publikováno v:
Frontiers in Optics / Laser Science.
The paper presents the development of Shack-Hartmann sensor as in-situ metrology technique that can be integrated to the machining platforms and helps in the development process of aspheric and freeform optics within the required tolerances.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::271d3f1b26e85c10d1ecd2d4a394a20d
https://doi.org/10.1364/fio.2018.jtu3a.11
https://doi.org/10.1364/fio.2018.jtu3a.11
Autor:
Kamal K. Pant, Dali R. Burada, Stefan Sinzinger, Mohamed Bichra, Chandra Shakher, Vinod Mishra, Gufran S. Khan
Publikováno v:
Optical Measurement Systems for Industrial Inspection X.
The increased range of manufacturable freeform surfaces offered by the new fabrication techniques is giving opportunities to incorporate them in the optical systems. However, the success of these fabrication techniques depends on the capabilities of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec406fedf6890a03cf64a9128740b442
https://doi.org/10.1117/12.2270284
https://doi.org/10.1117/12.2270284
Publikováno v:
Advanced Photonics 2016 (IPR, NOMA, Sensors, Networks, SPPCom, SOF).
Illumination is a crucial part of optical devices. Innovative design and illumination concepts enable compact optical systems for imaging and sensing. We present examples for sensors using freeform, adaptive or wavelength selective illumination.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7408c6cb73c251a0e5bc0babcd933d8c
https://doi.org/10.1364/sensors.2016.sew3d.6
https://doi.org/10.1364/sensors.2016.sew3d.6
Autor:
Matthias Hillenbrand, Adrian Grewe, Beate Mitschunas, Stefan Sinzinger, Mohamed Bichra, Christian Wenzel, Patrick Feßer, Xuan Ma
Publikováno v:
aot. 1:187-194
The combination of diffractive and refractive elements in hybrid optical systems allows for precise control of the longitudinal chromatic aberration. We provide comprehensive design strategies for hybrid hyperchromatic lenses that maximise the longit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6ed008276a67c8b37c95266f4f54119
https://doi.org/10.1515/aot-2012-0017
https://doi.org/10.1515/aot-2012-0017
Autor:
Kamal K. Pant, Amitava Ghosh, Gufran S. Khan, Mohamed Bichra, Dali R. Burada, Chandra Shakher, Stefan Sinzinger
Publikováno v:
Applied Optics. 57:1100
In the present work, a spline-based integration technique for the reconstruction of a freeform wavefront from the slope data has been implemented. The slope data of a freeform surface contain noise due to their machining process and that introduces r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f88e72d29277db3a0db6395630247608
https://doi.org/10.1364/ao.57.001100
https://doi.org/10.1364/ao.57.001100
Autor:
Mohamed Bichra, Daniel Pätz, Vadim Lebedev, Wilfried Pletschen, Christoph E. Nebel, Oliver Ambacher, J. Fries, Verena Zuerbig, Katarzyna Holc, Stefan Sinzinger, Markus Reusch
Publikováno v:
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).
A combined layer structure of aluminum nitride (AlN) and silicon nitride (Si x N y ) enables the fabrication of multisegment piezo-actuated micro lenses with a precise control of the lens surface. It is demonstrated that these micro lenses offer free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed1ccd664aad2d37ffad6f5c08aa18dd
https://doi.org/10.1109/transducers.2015.7181358
https://doi.org/10.1109/transducers.2015.7181358