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conference on current developments in Lens design and optical engineering XvII

作者： Dilworth, D. C. Opt Syst Design Inc Boothbay ME 04544 USA

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The art of lens design has long been divided into two camps: theorists and number crunchers. Both camps have vocal supporters, both manage to get the job done, and both occasionally voice disdain for the other. This paper presents the case for number crunching-while recognizing the important contributions that theorists have made and continue to make. We illustrate this case by designing a zoom lens with no starting design and minimum direction from the designer. To this end we use a feature called ZSEARCH (TM) found in the program SYNOPSYS (TM)(1).

关键词： lens design global optimization zoom lens Damped Least Squares (DLS) Pseudo-Second Derivative (PSD) SYNOPSYS (TM)

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Focusing regions evolution under linear transformations in the boundary condition 17

Focusing regions evolution under linear transformations in t...

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conference on current developments in Lens design and optical engineering XvII

作者： Garcia-Guzman, A. De los Santos-Garcia, S. I. Torres, M. A. Munoz, J. Martinez-Niconoff, G. Inst Nacl Astrofis Opt & Elect INAOE Dept Opt Postal 51 & 216 Puebla Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The properties of optical surfaces generated by diffraction are studied analyzing the changes in the curvature function of the boundary condition. The study leads to establish a classification for the optical fields as elliptical, hyperbolical or parabolic. The elliptical regions are separated from hyperbolic regions by a region of parabolic type, which corresponds to optical focusing regions. The main result of the analysis leads us to describe and to control bifurcations and vortices effects allowing to geometrize and to control the topological properties of the optical field. For this feature is important to control the geometry of the parabolic region, obtained by controlling the curvature function in the boundary condition. The model is implemented experimentally applying a linear transformation in transmittances of zone plate type. The experimental results corroborate the theoretical predictions

关键词： Diffraction Zone plates Lead optical components Transmittance Fractal analysis optical design optical tweezers Particles Spectroscopy

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The corrosion behaviour of candidate container materials for the disposal of high-level waste and spent fuel - a summary of the state of the art and opportunities for synergies in future R&D

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CORROSION engineering SCIENCE AND TECHNOLOGY 2017年第1_SUPPL期52卷 227-231页

作者： Padovani, C. King, F. Lilja, C. Feron, D. Necib, S. Crusset, D. Deydier, v Diomidis, N. Gaggiano, R. Ahn, T. Keech, P. G. Macdonald, D. D. Asano, H. Smart, N. Hall, D. S. Hanninen, H. Engelberg, D. Noel, J. J. Shoesmith, D. W. Radioact Waste Management RWM Harwell Berks England Integr Corros Consulting Nanaimo BC Canada Swedish Nucl Fuel & Waste Management Co SKB Stockholm Sweden Commissariat Energie Atom & Energies Alternat Gif Sur Yvette France Andra Paris France Natl Cooperat Disposal Radioact Waste Nagra Wettingen Switzerland ONDRAF NIRAS Brussels Belgium US Nucl Regulatory Commiss Washington DC 20555 USA Nucl Waste Management Org NWMO Toronto ON Canada Univ Calif Berkeley Dept Nucl Engn Berkeley CA 94720 USA Radioact Waste Management Funding & Res Ctr Tokyo Japan Amec Foster Wheeler Harwell Berks England Aalto Univ Dept Engn Design & Prod Espoo Finland Univ Manchester Corros & Protect Ctr Manchester Lancs England Univ Western Ontario Dept Chem London ON Canada

This paper presents a state-of-the-art analysis of the expected degradation processes of a variety of candidate container materials for the disposal of high-level waste and/or spent nuclear fuel. The work, focusing on the most recent developments, has been performed under the auspices of the Implementing Geological Disposal Technology Platform in the context of an international conference hosted by the Nuclear Waste Management Organisation of Canada (NWMO). The scope of the analysis includes the expected corrosion and environmentally assisted cracking behaviour of copper, carbon steel and titanium in contact with relevant buffer materials (e.g. bentonite, cement) and in conditions expected in an underground disposal facility (long-term anoxic conditions). Considerations relative to the expected evolution of the environmental conditions (especially in the period following backfilling) are also presented. Beyond summarising the current state of knowledge, areas in which opportunities for international collaboration may be present are also highlighted.

关键词： Nuclear waste management corrosion deep geological repository used fuel container radioactive waste management spent fuel container

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Achrotech: achromat cost versus performance for conventional, diffractive and GRIN components 17

Achrotech: achromat cost versus performance for conventional...

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conference on current developments in Lens design and optical engineering XvII

作者： Morris, Jeffrey Wolf, Greg vandendriessche, Stefaan Sparrold, Scott Edmund Opt 6464 E Grant Rd Tucson AZ 85711 USA Edmund Opt 101 East Gloucester Pike Barrington NJ 08007 USA

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

An achromatic component shares a common focus at two wavelengths and is a commonly used device in optical assemblies. This work explores the cost versus performance tradeoff for several types of achromatic lenses: conventional doublets with homogenous glass elements, hybrid doublets with a diffractive surface, axial GRadient INdex (GRIN) lenses (where the index of refraction changes along the length of the lens), and radial GRIN lenses (where the index of refraction changes depending on radial position). First order achromatic principles will be reviewed and applied to each system as a starting point and refined through the use of ray trace software. optical performance will be assessed in terms of focusing efficiency and imaging. Cost will then be evaluated by accounting for current manufacturing costs and retail price through several distributors.

关键词： achromat GRIN lens diffractive lens axial color longitudinal color spherochromatism lens design

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Composition variants for mirror high-aperture lens with compact design 17

Composition variants for mirror high-aperture lens with comp...

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conference on current developments in Lens design and optical engineering XvII

作者： Ezhova, Kseniia Zverev, victor Chuhlamov, Anton Burtseva, Anastasiia ITMO Univ 49 Kronverkskiy Prospect St Petersburg 197101 Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The theoretical basis for the mirror high-aperture optical system synthesis, based on the properties of the reflecting surface accepted as the base having a shape of a paraboloid of rotation are considered in the work design parameters and residual aberrations tables of the few design solutions for considered optical systems are presented. From the analysis of aberration correction of the image formed by the considered optical system, it follows that the angular value image space is limited, primarily, the image surface curvature. To compensate for curvature of the image surface can be applied Smith lens. The additional condition that determines a high aperture ratio of the optical system of the considered lens as a whole was introduced, but it complicates the process of correcting the aberrations of a wide beam of rays. It is shown that the use of afocal Mersenne system with known anaberration properties, allows you to build a series of compact and SLR mirror-lens systems with aplanatic, anastigmatic and plananastigmatic aberration correction formed the image, at the same time the length of the system is about four times smaller than the diameter of its entrance pupil. Importantly, when applying the lens for using in a long wavelength range emission, the requirements for aberration correction image formed by the lens are reduced, and accordingly, manufacturability are increases.

关键词： the reflecting surface afocal system aplanatic correction of aberrations the lens compensator

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Caustic surface produced by a plane wavefront refracted through positive bi-conic lenses. 17

Caustic surface produced by a plane wavefront refracted thro...

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conference on current developments in Lens design and optical engineering XvII

作者： Ponce-Hernandez, Osvaldo Avendano-Alejo, Maximino Roman-Hernandez, Edwin Moreno-Oliva, Ivan Univ Nacl Autonoma Mexico Ctr Ciencias Aplicadas & Desarrollo Tecnol Apdo Postal 70-186 Mexico City 04510 DF Mexico Univ Istmo Div Estudios Posgrado Campus Tehuantepec Cd Univ S-N Santo Domingo Tehuantepe 70760 Oaxaca Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

We study the formation of caustic surfaces produced by bi-conic lenses, considering a plane wavefront propagating parallel to the optical axis. We have already seen that the shape of caustic surfaces can represent the monochromatic aberrations that we call image errors, furthermore the shape of the caustic can be modified by changing the parameters of the lens in such a way that if we are able to vanish the caustic, the optical system produces an image without spherical aberration, alternatively caustic surfaces having a large area could be applied to design non-imaging optical systems, such as diffusers of light. The shape of the caustic surface is a function of the indices of refraction involved in the process of refraction, and all the parameters of the bi-conic lens. We provide an analytic equation for the caustic surface in a meridional plane and some examples are presented.

关键词： Ray tracing Lenses Protactinium Refraction Wavefronts Geometrical optics Interfaces Monochromatic aberrations optical design Cadmium

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Multi-parameter fibre Bragg grating sensor-array for thermal vacuum cycling test

Multi-parameter fibre Bragg grating sensor-array for thermal...

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International conference on Space Optics 2008, ICSO 2008

作者： Cheng, L. Ahlers, B. Toet, P. Casarosa, G. Appolloni, M. TNO Science and Industry Optics Stieltjesweg 1 Delft2600 AD Netherlands TNO Science and Industry Space and Science Stieltjesweg 1 Delft2600 AD Netherlands AOES Netherlands B.V. Huygensstraat 34 Noordwijk2201 DK Netherlands

ISBN: (纸本)9781510616219

Fibre Bragg Grating (FBG) sensor systems based on optical fibres are gaining interest in space applications. Studies on Structural Health Monitoring (SHM) of the reusable launchers using FBG sensors have been carried out in the Future European Space Transportation Investigations Programme (FESTIP). Increasing investment in the development on FBG sensor applications is foreseen for the Future Launchers Preparatory Programme (FLPP). TNO has performed different SHM measurements with FBGs including on the vEGA interstage [1, 2] in 2006. Within the current project, a multi-parameter FBG sensor array demonstrator system for temperature and strain measurements is designed, fabricated and tested under ambient as well as Thermal vacuum (Tv) conditions in a Tv chamber of the European Space Agency (ESA), ESTEC site. The aim is the development of a multi-parameters measuring system based on FBG technology for space applications. During the Tv tests of a Space Craft (S/C) or its subsystems, thermal measurements, as well as strain measurements are needed by the engineers in order to verify their prediction and to validate their models. Because of the dimensions of the test specimen and the accuracy requested to the measurement, a large number of observation/measuring points are needed. Conventional sensor systems require a complex routing of the cables connecting the sensors to their acquisition unit. This will add extra weight to the construction under test. FBG sensors are potentially light-weight and can easily be multiplexed in an array configuration. The different tasks comply of a demonstrator system design;its component selection, procurement, manufacturing and finally its assembly. The temperature FBG sensor is calibrated in a dedicated laboratory setup down to liquid nitrogen (LN2) temperature at TNO. A temperature-wavelength calibration curve is generated. After a test programme definition a setup in thermal vacuum is realised at ESA premises including a mechanical stra

关键词： Fiber Bragg gratings

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design of a radiance meter with predicted size of source and distance effects 17

Design of a radiance meter with predicted size of source and...

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conference on current developments in Lens design and optical engineering XvII

作者： Suarez-Romero, J. G. Solorio-Leyva, J. C. Hurtado-Ramos, J. B. Tecnolo Nacl Mexico lnst Tecnolo Queretaro Tecnolo SN Esq Escobedo Queretaro 76000 Qro Mexico Tecnol Nacl Mexico Inst Tecnol Piedad Tecnol 2000 La Piedad 59370 Michoacan Mexico Inst Politecnico Nacl Centro Invest Ciencia Aplicada Tecnol Cerro Blanco 141 Queretaro 76090 Qro Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

In a previous work, we described the theoretical fundamentals for the design of radiance meters. There, we observed that the length between the first and the second aperture of the instrument plays an important role in the performance of the meter. Such a length is a parameter related with the instrument response to variations of the size of the source and of the distance between the instrument and the source. Such dependences are not predicted by the theory of geometrical optics, normally used in the instrument design. Even the approximation of wave optics gives a partial understanding of the propagation of optical radiation. A more general treatment, based in the theory of partial coherence, gives a better description of the propagation.

关键词： Radiometry Radiance meter Partial Coherence Diffraction Lambertian Source Distance Effect Size of Source Effect Diffraction Corrections

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optical design and tolerancing of a hyperspectral imaging spectrometer 17

Optical design and tolerancing of a hyperspectral imaging sp...

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conference on current developments in Lens design and optical engineering XvII

作者： Liu, Chang Straif, Christoph Fluegel-Paul, Thomas Zeitner, Uwe D. Gross, Herbert Friedrich Schiller Univ Jena D-07743 Jena Germany DLR Space Adm D-53227 Bonn Germany Fraunhofer Inst Angew Opt & Feinmech D-07745 Jena Germany

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

A hyperspectral imaging spectrometer covering the wavelength range from 420 nm to 1000 nm is designed for the purpose of monitoring Earth's environmental change. It has an entrance slit length of 24 mu m, f/# of 3, smile and keystone distortion smaller than 20% of the pixel pitch and a spectral resolution of 6.5 nm. We design and review thirteen systems including one Offner system, two Schwarzschild systems and ten TMA systems for such specifications. Freeform surface and aspheric surface are used in some of the systems to achieve the required system parameters. With all system performance being summarized and evaluated, advantages and disadvantages of three different system types are compared. We down select two systems for further fine adjustments and tolerancing analysis. Final systems with superior performance and detailed tolerancing analysis are given at the end.

关键词： spectrometer TMA Schwarzschild tolerancing

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Efficient 3M PBS Enhancing Miniature Projection Optics 17

Efficient 3M PBS Enhancing Miniature Projection Optics

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conference on current developments in Lens design and optical engineering XvII

作者： Yun, Zhisheng Nevitt, Timothy Willett, Stephen Mortenson, Dave Le, John McDowell, Erin Kent, Susan Wong, Timothy Beniot, Gilles J. Ouderkirk, Andrew 3M Co Elect Mat Solut Div St Paul MN 55144 USA 3M Co Elect & Energy Grp Lab St Paul MN 55144 USA

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

Over the past decade, 3M has developed a number of mobile projectors, with a goal towards providing the world's smallest, most efficient projection systems. Compact size and efficiency are required characteristics for projection systems used in mobile devices and more lately, in augmented reality systems. In this paper we summarize the main generations of 3M light engine optical designs. We present the optical architectures of four light engines, including the rationale behind the illumination designs and the projection systems. In particular, we describe various configurations relating to the 3M polarizing beam splitter (PBS) which is key to enhanced efficiency of the miniature projection systems.

关键词： Augmented reality (AR) Head Mounted Display Polarizing beam splitter (PBS) Projection system design Pico projector Illumination system design Projection lens

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