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Autor:
R. Henselmans, Casper van Drunen
Publikováno v:
Optifab 2021.
The NMF600 S non-contact measurement machine for freeform optics by Dutch United Instruments (DUI) was used to measure a large concave surface with a polygon outside contour with typical diagonal of 250 mm. The surface is a higher order freeform off-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::204cdaa4bf0c111439b0c64b0333eeca
https://doi.org/10.1117/12.2602140
https://doi.org/10.1117/12.2602140
Autor:
R. Henselmans
Publikováno v:
OSA Optical Design and Fabrication 2021 (Flat Optics, Freeform, IODC, OFT).
A non-contact coordinate measuring machine has the versatility, accuracy, speed and point density for mid-spatial errors in aspheres and freeforms. This provides process development feedback not only during polishing, but already after grinding.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09518d1dc5d14761378da5f9e3e73840
https://doi.org/10.1364/oft.2021.ow3b.3
https://doi.org/10.1364/oft.2021.ow3b.3
Publikováno v:
Precision Engineering, 40, 14-25
Precision Engineering, 40, 14-25. Elsevier
Precision Engineering, 40, 14-25. Elsevier
To enable important scientific discoveries, ESO has defined a new ground-based telescope: the European Extremely Large Telescope (E-ELT). The baseline design features a telescope with a 39-m-class primary mirror (M1), making it the largest and most p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05af47ad1905897bc3853ac409605738
https://doi.org/10.1016/j.precisioneng.2014.09.008
https://doi.org/10.1016/j.precisioneng.2014.09.008
Publikováno v:
International Conference on Space Optics — ICSO 2010.
Applying freeform optics in high-end optical systems can improve system performance while decreasing the system mass, size and number of required components. Their widespread application is however held back by the lack of a suitable metrology method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c999b6cd93e6850dbeaa4d11991f8a6a
https://doi.org/10.1117/12.2309250
https://doi.org/10.1117/12.2309250
Autor:
A.M. Hoogstrate, R. Henselmans, Folkert Draaisma, Peter Van Doorn, David Nijkerk, Bart van Venrooy
Publikováno v:
International Conference on Space Optics — ICSO 2012.
In this paper, we discuss the two-mirror pushbroom telescope for TROPOMI. Using freeform optics, it has unprecedented resolution. The complete cycle of freeform optical design, analysis, manufacturing, metrology and functional test on a breadboard se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be13ef71cee74be6c9a7a07cabf21a0a
https://doi.org/10.1117/12.2309035
https://doi.org/10.1117/12.2309035
Publikováno v:
Precision Engineering. 35:607-624
Aspherical and freeform optics are applied to reduce geometrical aberrations as well as to reduce the required number of components, the size and the weight of the system. To measure these optical components with nanometre level uncertainty is a chal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::004f12f5fe84ff52ff242e8aa5398621
https://doi.org/10.1016/j.precisioneng.2011.04.004
https://doi.org/10.1016/j.precisioneng.2011.04.004
Publikováno v:
International Journal of Metrology and Quality Engineering, Vol 5, Iss 2, p 204 (2014)
Optical and tactile single scanning probes usually are used in dimensional metrology applications, especially for roughness, form, thickness and surface profile measurements. To perform assessments with nanometre level of accuracy, specific ultra-hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82df0a60bc42f80f0dc8a569d5433a1b
https://doaj.org/article/4eda72cf50204cb280905b87838768d1
https://doaj.org/article/4eda72cf50204cb280905b87838768d1
Publikováno v:
Cunningham, C.R.Navarro, R.Barto, A.A., 9151
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 22 June 2014, Montreal, Quebec, 1-12
STARTPAGE=1;ENDPAGE=12;TITLE=Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 22 June 2014, Montreal, Quebec
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 22 June 2014, Montreal, Quebec, 1-12
STARTPAGE=1;ENDPAGE=12;TITLE=Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 22 June 2014, Montreal, Quebec
The baseline design of the European Extremely Large Telescope features a telescope with a 39-meter-class primary mirror (M1), consisting of 798 hexagonal segments. A measurement machine design is presented based on a non-contact single-point scanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fed3f4dfaa5bfed7f54c3097a98ca2d
http://resolver.tudelft.nl/uuid:555713b7-fe13-401b-8492-41848d06d50f
http://resolver.tudelft.nl/uuid:555713b7-fe13-401b-8492-41848d06d50f
Publikováno v:
SPIE Proceedings.
Aspherical and freeform optical elements have a large potential in reducing optical aberrations and to reduce the number of elements in complex high performance optical systems. However, manufacturing a single piece or a small series of aspherical an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1684f21c485bd3ae1dfe66b249f387f
https://doi.org/10.1117/12.926040
https://doi.org/10.1117/12.926040