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Tytuł:
Studying the shape of solids of revolution with the use of optical coordinate metrology
Autorzy:
Ryniewicz, A.
Ostrowska, K.
Bojko, Ł.
Sładek, J.
Ryniewicz, A. M.
Czernilewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/114405.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
optical systems
measurements
standards
shape
accuracy
Opis:
The optical methods of coordinate measuring are a tool that have been more and more frequently used in biometrological applications, due to their advantages. The object of this paper is to set the accuracy of modelling solids of revolution whose shapes and measurements find their application in medical diagnostics with the use of three measurement systems employing laser and structured light. The carry out the studies, a coordinate measuring machine LK CMM with LC60Dx laser scanner, a coordinate measuring Romer Absolute Arm 7320SI with HP-L-20.8 laser scanner and an optical Scan 3D Qualify scanner were used. The use of coordinate technique to analyze the shape of the model solids allowed for the comparison of accuracy of optical methods with reference to standards digitally modelled based in measurements made by CMM Leitz PMM 12106. The most preferable contactless system to render the shape of solids of revolution is the LK CMM with LC60Dx laser scanner.
Źródło:
Measurement Automation Monitoring; 2016, 62, 3; 109-113
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designing the optical system with a real time lighting effect control
Autorzy:
Kubiak, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/1818249.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
lighting technology
optical systems design
luminance calculations
Opis:
In the paper, an effective way to design asymmetrical optics for a uniform vertical surface illumination was presented. Assessment of the obtained distribution of luminance (illuminance) on the illuminated surface is done almost at the same time as designing the optical system elements. Advantage of the final application of the presented method in 3D will be independence from the implementation of time-consuming simulations in order to verify the already designed optics. Understanding the method and its application is simple and intuitive. Observing the luminance distribution, created on the illuminated surface almost at the same time as its design, allows to see the effect of adding the next elements of the optical system on this distribution.
Źródło:
Opto-Electronics Review; 2020, 28, 2; 99--105
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Lensing Compensation in the Development of 30 fs Pulse Duration Chirped Pulse Amplification Laser System and Single-Shot Intensity-Phase Measurement
Autorzy:
Imran, T.
Hussain, M.
Powiązania:
https://bibliotekanauki.pl/articles/1029816.pdf
Data publikacji:
2018-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
lasers
laser optical systems: design and operation
nonlinear optics
Opis:
We present 30 fs pulse duration home-made chirped pulse amplification Ti:sapphire laser system operating at a repetition rate of 1 kHz with 4.0 mJ pulse energy. The Ti:sapphire laser system with ım819 nm center wavelength has a long-cavity oscillator, four pass grating stretcher, 8-pass pre-amplifier, 4-pass post-amplifier and a double pass grating compressor. The Peltier coolers and thermal eigenmode post-amplifier are introduced to compensate the thermal lensing of the crystal in the amplifiers and to enhance the beam focusability on the crystal. The Strehl ratio and M² value measured by employing the Shack-Hartman wavefront sensor HASO4 to observe the spatial profile and beam quality. The most sensitive single-shot second harmonic generation frequency-resolved optical gating diagnostic technique is employed to characterize intensity and phase of the output compressed laser pulses.
Źródło:
Acta Physica Polonica A; 2018, 133, 1; 28-31
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for designing and simulating optical systems for luminaires
Autorzy:
Żagan, W.
Zalewski, S.
Słomiński, S.
Kubiak, K.
Powiązania:
https://bibliotekanauki.pl/articles/200462.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
optical systems design
luminance modelling
LID calculations
Opis:
This paper presents modern methods for designing optical systems for luminaires in the context of long years of light sources development. It shows that the development of technology for producing increasingly precise optical systems has led to an evolution in the construction of luminaires with increased efficacy and utilizing more efficiently the features of a specific family of light sources. Methods for designing and modelling optical systems with the use of mathematical curves as well as advanced the free-forming method are described. The paper also shows methods for modelling light sources features, especially luminance ones, designed to make precise simulation calculations required in any luminaire design process. Knowledge of luminance distributions of light sources and precise luminance distributions of optical systems for luminaires raises the design process to a very high level, enabling positive modern light source features, such as high luminance and their small dimensions, to be used consciously while minimizing negative ones, such as discomfort glare, caused by luminaires. The paper presents the results of simulation calculations and laboratory measurements for a selected case of luminaire equipped with a discharge lamp of maximum luminance exceeding 30 million cd/m2.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 4; 739-750
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of Experimental Verification Methods of Gyrotron Quasi-optical Mode Converters
Autorzy:
Jaworski, Grzegorz
Francik, Andrzej
Nowak, Maciej
Nowak, Kacper
Powiązania:
https://bibliotekanauki.pl/articles/958091.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
gyrotron
high order modes
measurement for quasi-optical systems
Opis:
This survey presents a review of experimental methods relied upon while implementing gyrotron higher mode generation techniques and performing near electromagnetic field measurements in launcher and quasi-optical mode converters. In particular, the paper focuses on low power (cold) testing of gyrotron quasi-optical mode converters outside of the gyrotron, without the presence of high electromagnetic power and electron beams.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 3; 75-85
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced modelling and luminance analysis of LED optical systems
Autorzy:
Słomiński, S.
Powiązania:
https://bibliotekanauki.pl/articles/200561.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
luminance distribution
luminance modelling
LED
optical systems design
Opis:
Designing, optimizing and analyzing optical systems as part of the implementation process into production of modern luminaires require using advanced simulation and computational methods. The progressive miniaturization of LED (light emitting diode) chips and growth in maximum luminance values, achieving up to 108 cd/m2, require constructing very accurate geometries of reflector and lens systems producing complex luminous intensity distributions while reducing discomfort glare levels. Currently, the design process cannot function without advanced simulation methods. Today’s simulation methods in the lighting technology offer very good results as far as relatively large conventional light sources such as halogen lamps, metal halide lamps and high pressure sodium lamps are concerned. Unfortunately, they often fail in the case of chip-on-board LED light sources whose luminous surface dimensions are increasingly often contained inside a cube of the side length below 1mm. With the high sensitivity of such small chips and lenses with dimensions ranging from a just a few to between 10 and 20 mm, which is presented in this paper, modern luminance distribution measurement methods, luminance modelling and ray tracing methods should be used to minimize any errors arising from incorrectly projecting the design in the final physical model. Also, very importantly, focus should be directed towards reducing a chance of making a mistake while collimating the position of the light source inside the optical system. The paper presents a novel simulation calculation method enriched with an analysis of optical system sensitivity to a light source position. The results of simulation calculations are compared with the results of laboratory measurements for corresponding systems.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1107-1116
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko symulacyjne do badania głowic optoelektronicznych
Test stand for electro-optical gimbal simulation test
Autorzy:
Dereń, M.
Powiązania:
https://bibliotekanauki.pl/articles/194155.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
głowica obserwacyjna
gimbal
UAV
stabilizacja
symulacja
electro-optical systems
stabilization
simulation
Opis:
Latające platformy bezzałogowe (UAV) znajdują obecnie coraz więcej zastosowań zarówno militarnych jak i cywilnych. Jednym z częściej wykonywanych zadań jest szeroko rozumiana obserwacja. Podczas jej prowadzenia wykorzystuje się różnego rodzaju sensory, często w postaci głowic optoelektronicznych - kamer umieszczonych w układzie mechatronicznym, umożliwiającym zmianę orientacji sensora (kamery) względem nosiciela. Projektując algorytmy sterowania głowicy optoelektronicznej należy uwzględnić szereg parametrów związanych nie tylko bezpośrednio z konstrukcją tej głowicy, ale również z warunkami jej pracy i możliwościami nosiciela. W artykule przedstawiono podstawowe informacje o głowicach optoelektronicznych, ze szczególnym uwzględnieniem głowicy dwuosiowej, przeznaczonej do instalacji na pokładzie platformy bezzałogowej. Przedstawiono stanowisko do badań symulacyjnych głowic optoelektronicznych, zrealizowane z wykorzystaniem pakietu Matlab/Simulink. Umożliwia ono badanie algorytmów sterowania poprzez symulację zachowań nosiciela. Stanowisko umożliwia zadawanie parametrów na podstawie wcześniej zarejestrowanych rzeczywistych lotów platformy bezzałogowej, jak również stosowanie sztucznych, niespotykanych w locie wymuszeń.
Unmanned aerial vehicles (UAV) function in a growing number both military and civil applications. One of commonly undertaken tasks is an observation in its broadest sense. The observation involves using different kinds of sensors which often take form of electro-optical gimbals i.e. cameras placed in a mechatronic system which enables change of camera orientation toward a carrier. Developing control algorithms for the electro-optical gimbals as well as for the cameras, one should consider a number of parameters connected not only with the construction of the gimbal but also with its work conditions, especially including the capabilities of the carrier. The article presents the elementary information on the electro-optical gimbal, with special emphasis on a two axis gimbal dedicated to installing on board UAV. The designed and realized test stand for electro-optical gimbals simulation tests,which have been perfomed with the use of Matlab/Simulink, is also described in the article. The test stand allows testing the control algorithms via simulation of carrier behavior. It also enables parameterization on the basis of recorded UAV real flights as well as using forced set values not existing during real flights.
Źródło:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika; 2017, z. 36 [296], nr 2, 2; 19-28
0209-2662
2300-6358
Pojawia się w:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photonics and Web Engineering 2011
Autorzy:
Romaniuk, R. S.
Powiązania:
https://bibliotekanauki.pl/articles/226302.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanomaterials
optical fibers
optoelectronics
photonics
measurement systems
optical communication systems
photonic sources and detectors
Opis:
The paper presents a digest of chosen technical work results shown by young researchers from different technical universities in this country during the SPIE-IEEE Wilga 2011 symposium on Photonics and Web Engineering. Topical tracks of the symposium embraced, among others, nanomaterials and nanotechnologies for photonics and telecom, sensory and nonlinear optical fibers, object oriented design of hardware, photonic metrology, optoelectronics and photonics applications, photonics-electronics co-design, optoelectronic and electronic systems for telecom, astronomy and high energy physics experiments, JET and pi-of-the sky experiments development. The symposium is an annual summary in the development of numerable Ph.D. theses carried out in this country in the area of advanced electronic and photonic systems. It is also an occasion for young researchers to meet together in a large group (under the patronage of IEEE) spanning the whole country with guests from this part of Europe. A digest of Wilga references is presented [1-92].
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 3; 421-428
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A low-cost, simple optical setup for a fast scatterometry surface roughness measurements with nanometric precision
Autorzy:
Kucharski, D.
Zdunek, H.
Powiązania:
https://bibliotekanauki.pl/articles/200883.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
scatterometry
surface texture
optical measurement systems
surface metrology
surface roughness
Opis:
We present a prototype of a simple, low-cost setup for a fast scatterometric surface texture measurements. We used a total integrated scatter method (TIS) with a semiconductor laser (λ = 638 nm) and a Si photodiode. Using our setup, we estimated the roughness parameters Rq for two reference surfaces (Al mirrors with flatness λ/10) and seven equal steel plates to compare. The setup is easily adaptable for a fast, preliminary manufacturing quality control. We show is possible to construct a low-cost measurement system with nanometric precision.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 3; 485-490
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie systemów RE/CAD/RP w procesie projektowania i wytwarzania modeli medycznych żuchwy
Application of RE/CAD/RP systems in the design and manufacture medical models of mandible
Autorzy:
Budzik, G.
Burek, J.
Dziubek, T.
Turek, P.
Powiązania:
https://bibliotekanauki.pl/articles/270970.pdf
Data publikacji:
2016
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
szybkie prototypowanie
inżynieria odwrotna
dokładność
systemy optyczne
żuchwa
rapid prototyping
reverse engineering
accuracy
optical systems
mandible
Opis:
Praca przedstawia badania nad stworzeniem zautomatyzowanej procedury umożliwiającej projektowanie i wytwarzanie modeli medycznych żuchwy. Pierwszy etap badań przyjętej procedury, polegał na zebraniu danych pomiarowych oraz odtworzeniu geometrii modelu żuchwy z danych Digital Imaging and Communications in Medicine (DICOM). Następnie zastosowano system CAD - Catia, który umożliwił rekonstrukcję ciągłości geometrii żuchwy oraz przygotowanie jej modelu w celu późniejszego wytworzenia przy użyciu technik przyrostowych lub ubytkowych. Przeprowadzono także ocenę stopnia skorygowania położenia uszkodzonego odcinka względem zarysu nominalnego żuchwy. W celu wykonania gotowego modelu medycznego żuchwy zastosowano technologię przyrostową FDM, oraz przeprowadzono analizę dokładności wykonania gotowego modelu.
This paper presents results of the research focused on creation of an automated procedure that allows the design and manufacture medical models of the mandible. In the first stage of this study DICOM data was collected and reconstructed geometry of the mandible. In second stage of this process used software CAD - Catia. This software reconstructed continuity geometry of the mandible and prepared this model for manufactured with used rapid prototyping technology. Also in this paper, presents results demonstrated degree of damage right side of mandible before the injury. Medical model of the mandible, manufactured with using FDM technology. In final stage of this procedure, created rapport present analysis on accuracy of manufactured.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2016, 21, 1; 4-9
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of isochromatics and isoclinics phasemaps for the photoelastic technique with use phase shifting and a large number of high precision images
Autorzy:
Magalhaes, C. A.
Neto, P. S.
Magalhaes Jr P. A., A.
de Barcellos, C. S.
Powiązania:
https://bibliotekanauki.pl/articles/220820.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
photoelasticity
metrology
stress analysis
strain measurement
optical measurement systems
optical interferometry
experimental techniques
Opis:
Digital photoelasticity is an important optical metrology follow-up for stress and strain analysis using full-field digital photographic images. Advances in digital image processing, data acquisition, procedures for pattern recognition and storage capacity enable the use of the computer-aided technique in automation and facilitate improvement of the digital photoelastic technique. The objective of this research is to find new equations for a novel phase-shifting method in digital photoelasticity. Some innovations are proposed. In terms of phaseshifting, only the analyzer is rotated, and the other equations are deduced by applying a new numerical technique instead of the usual algebraic techniques. This approach can be used to calculate a larger sequence of images. Each image represents a pattern and a measurement of the stresses present in the object. A decrease in the mean errors was obtained by increasing the number of observations. A reduction in the difference between the theoretical and experimental values of stresses was obtained by increasing the number of images in the equations for calculating phase. Every photographic image has errors and random noise, but the uncertainties due to these effects can be reduced with a larger number of observations. The proposed method with many images and high accuracy is a good alternative to the photoelastic techniques.
Źródło:
Metrology and Measurement Systems; 2013, 20, 1; 127-138
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of measurement uncertainty with the use of uncertainty database calculated for optical coordinate measurements of basic geometry elements
Autorzy:
Owczarek, D.
Ostrowska, K.
Harmatys, W
Sładek, J.
Powiązania:
https://bibliotekanauki.pl/articles/101965.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
estimation of measurement uncertainty
optical coordinate measuring systems
Opis:
The paper presents a method for estimating the uncertainty of optical coordinate measurement based on the use of information about the geometry and the size of measured object as well as information about the measurement system, i.e. maximum permissible error (MPE) of the machine, selection of a sensor, and also the required measurement accuracy, the number of operators, measurement strategy and external conditions contained in the developed uncertainty database. Estimation of uncertainty is done with the use of uncertainties of measurements of basic geometry elements determined by methods available in the Laboratory of Coordinate Metrology at Cracow University of Technology (LCM CUT) (multi-position, comparative and developed in the LCM CUT method dedicated for non-contact measurements) and then with the use of them to determine the uncertainty of a given measured object. Research presented in this paper are aimed at developing a complete database containing all information needed to estimate the measurement uncertainty of various objects, even of a very complex geometry based on previously performed measurements.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 27; 112-117
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear optics of the thin-film quasiwaveguide amplifier: applications to directional switching in the optical communication systems
Autorzy:
Djotyan, G.P.
Arutunyan, V.M.
Bakos, J.S.
Sörlei, Z.
Powiązania:
https://bibliotekanauki.pl/articles/308725.pdf
Data publikacji:
2000
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
thin-film laser
directoral switching
four-wave mixing
optical communication systems
Opis:
We examine nonlinear optical effects in the active medium of the thin-film quasiwaveguide amplifier-oscillator with injection of the external signal. The injection locking has been obtained in the case when both the frequency and the direction of propagation of the injected signal differ from those for a free-running thin-film laser which offers a possibility for the frequency and directional switching of the output of the thin-film laser. The effects of four wave mixing and phase conjugation have been discussed in the active medium of the thin-film laser when additional mirrors forming an external resonator have been used.
Źródło:
Journal of Telecommunications and Information Technology; 2000, 1-2; 20-23
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie fazy w diagnostyce układów napędowych
The Use of Phase in the Diagnostics of Power Systems
Autorzy:
Szymaniec, S.
Powiązania:
https://bibliotekanauki.pl/articles/1368397.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
maszyny elektryczne
układy optyczne służące do pomiarów kąta fazowego
diagnostyka
electrical machines
optical systems used for measuring the phase
diagnostics
Opis:
Optical systems used for measuring the phase angle are very important equipment of all signal analysers applied for diagnostic purposes. This paper presents a system to measure the phase angle when balancing with the use of SKF Microlog CMVA60 analyser. Then it discusses the use of phase measurement for balancing rotors, for the diagnostics of backlash in a rotating system, diagnostics of the shaft curvature and shaft bending. There are practical examples of the use of phase in the diagnostics of power system.
Bardzo ważnym wyposażeniem wszystkich analizatorów sygnałów używanych do celów diagnostycznych są układy optyczne służące do pomiarów kąta fazowego. W artykule przedstawiono układ do pomiaru kąt fazowego w czasie wyważania przy użyciu analizatora SKF Microlog CMVA60. Następnie omówiono wykorzystanie pomiaru fazy do wyważania wirników, do diagnozowania luzów w układzie wirującym, do diagnozowania wygięcia wału oraz skrzywienia wału. Podano przykłady praktyczne wykorzystania fazy w diagnozowaniu układów napędowych.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2013, 2, 99; 43-48
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of Optical Fiber Technology in Poland
Autorzy:
Dorosz, J.
Romaniuk, R. S.
Powiązania:
https://bibliotekanauki.pl/articles/226479.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optical fibers
optical communication systems
photonic sources and detectors
photonic sensors
integrated optics
photonics applications
photonic materials
Opis:
In this paper, the authors, chairmen of the 13th Conference on Optical Fibers and Their Applications OFA 2011, and editors of the conference proceedings summarize the development of optical fiber technology in Poland (during the period of 2009-2011) on the basis of papers presented there and consecutively published in this volume. The digest is thus not full but covers the periodically presented material every 18 months during the meetings on optical fibers in Białystok-Białowieża and Lublin-Krasnobród.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 2; 191-197
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
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