Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Dirk-Roger Schmitt"'
Autor:
Dirk-Roger Schmitt
Publikováno v:
Precision Engineering. 13:263-269
Supersmooth mirror substrates for laser-gyro applications were investigated. Bare samples made of BK7 glass, fused silica, and different silicon wafers were examined. Nomarski differential interference contrast microscopy was used to characterize the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da78742f3dadec0baf1a5497414e4321
https://doi.org/10.1016/0141-6359(91)90004-3
https://doi.org/10.1016/0141-6359(91)90004-3
Autor:
Mark Okrent, Dirk-Roger Schmitt
Publikováno v:
AIAA 3rd "Unmanned Unlimited" Technical Conference, Workshop and Exhibit.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::979dd3cad965e41b7077a4d2fb980e60
https://doi.org/10.2514/6.2004-6329
https://doi.org/10.2514/6.2004-6329
Autor:
L. Raupach, Dirk-Roger Schmitt, Gabriele A. Ringel, Manfred Schrenk, Peter Weissbrodt, Erich J. Hacker, Helmut H. Toebben
Publikováno v:
SPIE Proceedings.
For future spacecrafts a lot of new UV or x-ray instruments are proposed. To enhance resolution and reduce scattering, new optical materials with optical surfaces with a roughness range of about 0.1 nm, i.e. supersmooth surfaces will be used to build
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ba15fd1677a88b9d4c4f9bf0e5bfdc6
https://doi.org/10.1117/12.450075
https://doi.org/10.1117/12.450075
Autor:
Heinrich Doergeloh, Wilfried Wetjen, Jochen Fries, Heiko Keil, Siegfried Kleindienst, Dirk-Roger Schmitt
Publikováno v:
Airborne Reconnaissance XXIV.
Airborne network systems to transmit reconnaissance data from UAVs have been investigated. An airborne experimental system has been developed as test bed to investigate different concepts of the communication between UAV sensor platform, relay platfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::673cb5ad5c2767b360cf6e0f6e5daf15
https://doi.org/10.1117/12.408695
https://doi.org/10.1117/12.408695
Publikováno v:
SPIE Proceedings.
There is an increasing demand for future airborne reconnaissance systems to obtain aerial images for tactical or peacekeeping operations. Especially Unmanned Aerial Vehicles (UAVs) equipped with multispectral sensor systems and with real time jam res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7172dc79aafe510db7aa8e0d4d70e64e
https://doi.org/10.1117/12.352887
https://doi.org/10.1117/12.352887
Publikováno v:
Specification, Production, and Testing of Optical Components and Systems.
The power spectral density (PSD) is the most appropriate way to characterize the microroughness of a surface with a spatial wavelength range from several centimeters to a few hundred nanometers. Novel concepts to specify optical surfaces using the PS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28548068b901cf568d20157a80c7496f
https://doi.org/10.1117/12.246751
https://doi.org/10.1117/12.246751
Publikováno v:
Specification, Production, and Testing of Optical Components and Systems.
The surface profile and the corresponding power spectral density function achieved by optical or mechanical profilometry operating in xz domain are always affected by probe dimensions and data digitization of the instruments. For mechanical profilome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b29f50c410f31c2fc9a830ebb361532
https://doi.org/10.1117/12.246753
https://doi.org/10.1117/12.246753
Autor:
Dirk-Roger Schmitt, Frank Kratz, Gabriele A. Ringel, John D. Garratt, Juergen Mangelsdorf, Francois Creuzet
Publikováno v:
Optical Manufacturing and Testing.
Intercomparison roughness measurements have been carried out on supersmooth artifacts fabricated from BK7, fused silica, and Zerodur. The surface parameters were determined using the optical heterodyne profiler Z5500 (Zygo), a special prototype of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c61b5dabca629c5e9bdb169c98912d3
https://doi.org/10.1117/12.218438
https://doi.org/10.1117/12.218438
Autor:
Gabriele A. Ringel, Frank Kratz, Juergen Mangelsdorf, Dirk-Roger Schmitt, John D. Garratt, Francois Creuzet
Publikováno v:
SPIE Proceedings.
Intercomparison roughness measurements have been carried out at supersmooth artefacts fabricated from BK7, fused silica, and Zerodur. The surface parameters were determined using a special prototype of the mechanical profiler Nanostep (Rank Taylor Ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f87c7e8b798d260db7160f45a7bd3331
https://doi.org/10.1117/12.215614
https://doi.org/10.1117/12.215614
Autor:
Sigrid Wagner, Peter Weissbrodt, Hans Lauth, Erich J. Hacker, L. Raupach, Dirk-Roger Schmitt, Heiner Kappel
Publikováno v:
Optical Interference Coatings.
Optical components for space optics--especially coated optical elements which represent the external surfaces of optical space instrumentation--have to work under harsh operation conditions like thermal loads, irradiation by photons, electrons and pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1dcb470a72e682f33be6f6cc71f5ef2
https://doi.org/10.1117/12.192087
https://doi.org/10.1117/12.192087