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检索条件"任意字段=Conference on Current Developments in Lens Design and Optical Engineering XX"

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current developments in lens design and optical engineering xx

Current Developments in Lens Design and Optical Engineering ...

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current developments in lens design and optical engineering xx 2019

ISBN: (纸本)9781510629011

The proceedings contain 29 papers. The topics discussed include: fundus camera versus smartphone camera attachment: image quality analysis;a water-polydimethylsiloxane liquid lens for variable focus experiments in an undergraduate laboratory;deconvolution process with GPU in a wavefront coding microscopy system;exposure of restore-L camera optical elements to a simulated orbital radiation environment;the design of a four-mirror anti-astigmatism astronomical telescope;introducing a dynamic deep neural network to infer lens design starting points;and application of GPUs in optical design software.

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General formula for aspheric collimator lens design free of spherical aberration 20

General formula for aspheric collimator lens design free of ...

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conference on current developments in lens design and optical engineering xx

作者： Gonzalez-Acuna, Rafael G. Gutierrez-Vega, Julio C. Tecnol Monterrey Photon & Math Opt Grp Monterrey 64849 Mexico

We present the general formula to generated aspheric collimator lens free of spherical aberration and astigmatism. The presented formula describes the second surface of the aspheric singlet such as it correct the sphe... 详细信息

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

关键词： optical design aspheric collimator

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Application of GPUs in optical design software 20

Application of GPUs in optical design software

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conference on current developments in lens design and optical engineering xx

作者： Mischuck, Brian Page, Erik Croce, Alessandra Zemax 10230 NE Points Dr 500 Kirkland WA 98033 USA

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

We present an overview of the pros and cons of using GPUs in optical design software. While GPUs can run multiple calculations in parallel, that parallelization comes with a price. We will discuss the trade-offs that allow GPUs to run up to thousands of cores in parallel and how those trade-offs effect the use of GPUs in optical design software. In particular, we review the use of GPUs in several steps of design calculations, including ray-tracing and computationally expensive steps such as calculating Huygens integrals.

关键词： OpticStudio GPU PSF Scientific Computing

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Consumer Electronic Optics: How Small a lens Can Be Using Metasurfaces 20

Consumer Electronic Optics: How Small a Lens Can Be Using Me...

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conference on current developments in lens design and optical engineering xx

作者： Thibault, Simon Univ Laval Ctr Opt Photon & Lasers COPL Quebec City PQ Canada Immervis Inc Montreal PQ Canada

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

Miniature optics are used in many applications and particularly in consumer optics for such products as webcams, mobile phones, automotive components, endoscopes, tablets, and many other connected devices. Mobile phone cameras are probably the ones that have driven the race for shorter TTL over the past 10 years. Ten years ago, cell phone cameras were composed of 3-4 optical plastic elements within one camera lens;today it takes more than 6 optical elements to obtain mega pixel resolution. But it is still not enough. The market has an insatiable appetite for greater optical performance. Consequently, the lens system has become more complex and now may require more optical elements with more complex optical functions. In this context, can the metasurface lens play a role? In this paper, we will try to address this question and discuss how metasurfaces promise to become a game changer in the consumer electronics market.

关键词： lens design Metasurface Dielectric Nanofin Aberration Cell Phone Camera Phone

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Material selection for an achromatic and athermal design using the factor of determination on optical glasses 20

Material selection for an achromatic and athermal design usi...

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conference on current developments in lens design and optical engineering xx

作者： Lim, Tae-Yeon Kim, Kum-Ho Park, Sung-Chan Dankook Univ Dept Phys 119 Dandae Ro Cheonan Si 31116 Chungcheongnam South Korea

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

This study presents a new method for selecting a pair of optical glass and housing material to achromatize and athermalize a lens system, by use of the factor of determination for material selection. To effectively obtain an optimum combination for materials, we newly propose the sequential material selection method by introducing the factor of determination for material selection, which depends on the level of contribution to correct these aberrations and the availability to be used as a suitable material. Even though there are many cases for material combinations, we can sequentially identify the best pair of glass and housing materials by checking the factor of determination. Using this design approach, we efficiently obtain an achromatic and athermal system through an optimum combination of materials, over the specified ranges in temperature and waveband.

关键词： lens design athermalization achromatization graphic solution

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Spatial resolution of an optical microscope with oblique illumination 20

Spatial resolution of an optical microscope with oblique ill...

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conference on current developments in lens design and optical engineering xx

作者： Borovytsky, Volodymyr Natl Tech Univ Ukraine Igor Sikorsky KPI Opt Engn Dept Pr Peremogy 37 UA-03056 Kiev Ukraine

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

This paper presents the theory for numerical evaluation of the spatial resolution along an optical axis of an optical microscope in case of oblique illumination. It considers the optical setup with a coherent light source, a microscope condenser, a grating located in a plane with an optical axis and with grating slits perpendicular to this axis and a microscope objective. It is proposed the analytical expression for calculation of the minimal resolvable period of this grating or the corresponded spatial cutoff frequency that characterizes the spatial resolution along the optical axis. It is demonstrated that this spatial cutoff frequency is not proportional to the angle of beam inclination. The proposed theory clearly explains why an optical microscope has the limited spatial resolution along an optical axis and how illumination can maximize this resolution.

关键词： Fourier optics image formation diffraction theory optical microscopy spatial resolution Abbe theory optics education spatial cutoff frequency spatial bandwidth

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Introducing a dynamic deep neural network to infer lens design starting points 20

Introducing a dynamic deep neural network to infer lens desi...

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conference on current developments in lens design and optical engineering xx

作者： Cote, Geoffroi Lalonde, Jean-Francois Thibault, Simon Univ Laval Ctr Opt Photon & Laser Quebec City PQ G1V 0A6 Canada Univ Laval Lab Vis & Syst Numer Quebec City PQ G1V 0A6 Canada

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

Most lens design problems involve the time-consuming task of finding a proper starting point, that is, a lens design that approximately fulfills the desired first-order specifications while decently correcting aberrations. In recent work, a fully-connected (FC) deep neural network was trained to learn this task by extrapolating from known lens design databases. Here, we introduce a new dynamic neural-network architecture for the starting point problem which is based on a recurrent neural network (RNN) architecture. As we show, the dynamic network can learn to infer good starting points on many lens design structures at once whereas the previous model was limited to a given sequence of glass elements and air gaps. We also show that a pretrained RNN model can generalize its knowledge over new lens design structures for which we have no reference lens design and obtain a significantly better optical performance than a RNN trained from scratch.

关键词： Manuscript format template SPIE Proceedings LaTeX

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25 years of current developments in lens design and optical engineering: a review 25

25 years of current developments in lens design and optical ...

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conference on current developments in lens design and optical engineering xxV

作者： Thibault, Simon Univ Laval COPL Quebec City PQ Canada

ISBN: (纸本)9781510679221;9781510679238

These days, nothing lasts very long, and things often change for the better, but there are sure things in our community, such as this annual event, which has been going on for 25 years. The first edition in 2000 of the current developments in lens design and optical Systems engineering conference took place during International Symposium on optical science and technology, 30 July - 4 August 2000 in San Diego. Over 45 oral presentations and ten posters were presented. The chairs were Robert E. Fischer, Warren J. Smith, R. Barry Johnson, and William H. Swantner. The proceeding was numbered 4093 and 24 years later the number is 12666 (2023). This paper looks back on the great moments of our conference, its speakers, the subjects that have come and gone, and those that have remained.

关键词： History lens design optical engineering aberration instrumentation assembly testing metrology

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A Laser Pumping Double-Light-Source Module with Photon-Recycling 20

A Laser Pumping Double-Light-Source Module with Photon-Recyc...

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conference on current developments in lens design and optical engineering xx

作者： Lin, Shih-Kang Su, Yu-Wen Lee, Xuan-Hao Yu, Yeh-Wei Yang, Tsung-Hsun Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Chungli 32001 Taiwan Feng Chia Univ Dept Opt & Photon Taichung 40724 Taiwan

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

We proposed a novel structure to perform photon recycling for a double-light-source illumination system pumped by a laser. In the design, two kinds of phosphor are located at the two focus of an elliptical reflective surface separately, after the phosphor on the first focus pumped by laser, the backward scattering light will refocus at the other phosphor layer at the second focus. The absorption spectrum of the second phosphor should fit that of the emission light by the first phosphor. When the emission spectrum covers red light, the whole system is a double-light-source module.

关键词： laser diode photon recycling head lamp optical design

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Silicon Fresnel lens fabricated using greyscale lithography 20

Silicon Fresnel lens fabricated using greyscale lithography

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conference on current developments in lens design and optical engineering xx

作者： Chen, Cheng-Po Karp, Jason Toepfer, Tim Boomhower, Oliver Kretchmer, Jim Goswami, Shubhodeep Dekate, Sachin Tsakalakos, Loucas GE Global Res 1 Res Circle Niskayuna NY 12309 USA

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

A silicon Fresnel lens was designed and fabricated using a greyscale lithography technique to shape optical emissions from an edge-emitting semiconductor diode laser. The laser beam was collimated in the fast axis and allowed a +/- 3 degrees divergence in the slow axis along with bias angle accomplished through lens decentering. The lens had an aperture of 6.8 mm x 2.2 mm and 1 mm in total thickness. The lens was first designed as a contiguous surface using conventional ray-tracing methods, and then converted to a Fresnel sag model with an etch depth of 6.25 micrometers. The sag model along with the manufacturing tolerances were fed back through numerical tools to refine the design and modify the lens shape and laser position. optical profilometry of fabricated lens element found deviations from design and non-uniformity across the entire aperture, with over-etching in the center and under-etching toward the edge of the lens. Characterization of the fabricated lenses showed less than 5% deviation in etch depth. Collimation performance was measured to be less than 2 milliradians, which was in close agreement with design models. Greyscale fabrication of the lens element enabled complex curvatures to be combined and provided a compact solution for direct, single optic coupling of diode laser to free-space projection.

关键词： greyscale lithography silicon lens Fresnel lens surface metrology

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