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Columbia Univ., New York (USA). Radiological Research Lab; p. 8-119; 1 Jul 1972
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[en] There has been much written over the years about the generation of optical system fabrication, assembly, and alignment tolerances leading to a performance error budget and predicted system performance. Over my 40 years of optical design experience I have become more cautious (and concerned) about how accurately we, the optics community, are tolerancing our systems and predicting their manufactured performance. In this paper I will share with you some of these concerns along with recommended ways of avoiding the many speed bumps, pot holes and other common issues encountered when tolerancing. And of course I will reveal why tolerances don't lie
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Turkish Physics Society, (Turkey); Turkish Physical Society (TR). Funding organisation: Governorship of Bodrum (Turkey); TAEA (TR); TUBITAK (TR); Municipality of Bodrum (TR); Mugla University (TR); Yildiz Technique University (TR); Abant Izzet Baysal University (TR); Aksaray University (TR); Rize University (TR); Erzincan University (TR); Harran University (TR); Suleyman Demirel University (TR); ETI (TR); TAV Havalimanlary (TR); CAYKUR (TR); 764 p; 2008; p. 6; Turkish Physical Society 25. International Physics Congress; Turk Fizik Dernegi 25. Uluslararasi Fizik Kongresi; Bodrum (Turkey); 25-29 Aug 2008; Available from President of Turkish Physical Society, Prof. Dr. Baki AKKUS, e-mail: akkus@istanbul.edu.tr
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[en] Engineering students answers wich show difficulties to explain , in very simple optical systems, the relationships between. a) perceived image and the curvature of the wavefront reaching the eye. b) optical system dimensions and the regions from wich complete image can be observed, are analyzed. Possible reasons for these difficulties are considered. The inclusion of the observer eye as well as an elemental model for vision when optical systems are studied is suggested. (Author) 16 refs
Original Title
Optica y Vision hacia un aprendizaje mas integrado
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[en] This paper deals with a method of measuring the pitch accuracy of raster scales employing Moire fringe technique. The pitch accuracy of angular or linear scales is assessed during the straight-line or circular movement along precise straight or circular trajectory. An index head with a raster scale in conjuction with the raste scale to be measured, results in the Moire fringe pattern. The information about the pitch accuracy is yielded at appropriate intervals of the time or displacement. (orig.)
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VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Duesseldorf (Germany); VDI-Berichte; no. 940; 567 p; ISBN 3-18-090940-4;
; 1992; p. 41-45; VDI-Verl; Duesseldorf (Germany); International IMEKO/GESA symposium on risk minimization by experimental mechanics; Internationales IMEKO/GESA Symposium ueber Risikominimierung Mittels der Experimentellen Mechanik und Fachausstellung; Duesseldorf (Germany); 28-30 Apr 1992

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Perez, G.; Pando Lambruschini, C.; Sinha, S.; Cerdeira, H.A.
International Centre for Theoretical Physics, Trieste (Italy)1991
International Centre for Theoretical Physics, Trieste (Italy)1991
AbstractAbstract
[en] We study globally coupled chaotic maps modeling an optical system, and find clear evidence of non-statistical behavior: the mean square deviation (MSD) of the mean field saturates with respect to increase in the number of elements coupled, after a critical value, and its distribution is clearly non-Gaussian. We also find that the power spectrum of the mean field displays well defined peaks, indicating a subtle coherence among different elements, even in the ''turbulent'' phase. This system is a physically realistic model that may be experimentally realizable. It is also a higher dimensional example (as each individual element is given by a complex map). Its study confirms that the phenomena observed in a wide class of coupled one-dimensional maps are present here as well. This gives more evidence to believe that such non-statistical behavior is probably generic in globally coupled systems. We also investigate the influence of parametric fluctuations on the MSD. (author). 10 refs, 7 figs, 1 tab
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Oct 1991; 24 p
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[en] Short communication
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Israel Physical Society, Jerusalem (Israel); Bulletin of the IPS; v. 39; 175 p; Apr 1993; p. 145; Israel physical society 1993 annual meeting; Tel-Aviv (Israel); 4 Apr 1993
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Vardanyan, G.A.; Gevorgyan, A.H.
Izvestiya Natsional'noj Akademii Nauk Armenii, Yerevan (Armenia)1996
Izvestiya Natsional'noj Akademii Nauk Armenii, Yerevan (Armenia)1996
AbstractAbstract
[en] Possibilities to obtain the polarization plane rotation amplification and polarization azimuth stabilization with an anisotropic plate in absence of polarization ellipticity are investigated. It is shown, that a resolving ability of an amplifier, which does not introduce a typical for anisotropic plates ellipticity in the passing wave is always smaller than or, at the best, equal to zero. Conditions are found at which the plate works as an ideal stabilizer. The influence of the absorption on the polarization plane rotation amplification is studied. Results of the experimental investigation of the azimuthal non equivalence are presented. 9 refs
Original Title
Usilenie povorota ploskosti polyarizatsii i stabilizatsiya azimuta polyarizatsii anizotropnoj plastinkoj
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Journal Article
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Izvestiya National'noj Akademii Nauk Armenii. Fizika; ISSN 1025-5613;
; v. 31(6); p. 267-275

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Boisde, Gilbert; Boissier, Alain
CEA, 75 - Paris (France)1979
CEA, 75 - Paris (France)1979
AbstractAbstract
[en] Photometry cell for measuring the optical density of fluids and particularly the turbidity of river or nuclear reactor waters or also for detecting pollutants in liquids or gases. The instrument enables the optical path to be extended, and hence the accuracy, by multiple reflexions on spherical mirrors and an optical system operating by transmission. The facilities used to introduce and extract the light beam can be constituted by light guides, particularly optical fibres
[fr]
Cellule de photometrie pour la mesure de la densite optique de fluides et notamment pour la mesure de la turbidite des eaux de riviere ou de reacteurs nucleaires, ou encore pour la detection de polluants dans les liquides ou les gaz. Le dispositif permet d'allonger le parcours optique, et donc la precision, par reflexions multiples sur des miroirs spheriques et une optique travaillant en transmission. Les moyens pour introduire et pour extraire le faisceau lumineux pouvant etre constitues par des guides de lumiere, notamment des fibres optiquesOriginal Title
Cellule photometrique a reflexions multiples
Source
26 Oct 1979; 14 p; FR PATENT DOCUMENT 2421376/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
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Patent
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[en] Published in summary form only
Original Title
Funcao de transferencia optica em projeto optico
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Almeida Fonseca, A.L. de (Brasilia Univ., DF (Brazil)); Koiler, B. (Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil)); Brescansin, L.M. (Universidade Estadual de Campinas, SP (Brazil)) (and others); Sociedade Brasileira de Fisica, Rio de Janeiro, RJ (Brazil); 284 p; 1990; p. 177; 13. National Meeting on Condensed Matter Physics; Caxambu, MG (Brazil); 8-12 May 1990; Available from the Library of Comissao Nacional de Energia Nuclear, RJ, Brazil
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[en] This paper reports the work done at the 'Osservatorio Astronomico Regionale Parco Antola Comune di Fascia' (OARPAF), as a part of my master thesis. The paper is divided in three parts: the first part describes the instrumentation at the OARPAF; the second part shows the characterization of the instrumentation, from the pointing model of the telescope to the conception and the realization of the software for data analysis; the third part illustrates the results of the photometric calibration.
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Journal Article
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Nuovo Cimento C. (Online); ISSN 1826-9885;
; v. 39(2); p. 1-9

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