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

共 444 条记录，以下是41-50 订阅

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New aberration properties of two-mirror Cassegrain lenses

New aberration properties of two-mirror Cassegrain lenses

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conference on current developments in lens design and optical engineering III

作者： Bezdidko, SN Sci Ctr House Opt Moscow Russia

Analysis of aberration performance of two-mirror Cassegrain lens allowed revealing an interesting relationship between them and the central obscuration coefficient epsilon and the distance delta of the focal plane fro... 详细信息

ISBN: (纸本)0819445347

关键词： lens design aberration performance two-mirror Cassegrain lens

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optical systems for free-space laser communications

Optical systems for free-space laser communications

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conference on current developments in lens design and optical engineering IV

作者： Hemmati, H CALTECH Jet Prop Lab Pasadena CA 91109 USA

An overview of optical systems utilized in JPL's optical Communications research is provided here. These include discussions on the flight terminal optics, the ground receiver aperture and the uplink beacon or com... 详细信息

ISBN: (纸本)0819450464

关键词： telescope flight optics photon buckets and optical communications

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Infrared hybrid optics: analysis and implementation

Infrared hybrid optics: analysis and implementation

引用

conference on current developments in lens design and optical engineering II

作者： Wood, AP THALES Opt Ltd St Asaph LL17 0LL Denbighshire Wales

ISBN: (纸本)0819441554

Hybrid optics offer a valuable aberration correction tool for the lens designer. However, careful consideration must be given to the calculation of the optical performance during the design process, and to the practical implementation of the elements if the potential benefits are to be realised in practice. optical performance can be accurately assessed by tracing multiple diffraction orders. It may be particularly important to utilise such a technique if, for example, the image-forming bundles sample a small number of diffractive zones. This situation is examined in detail.

关键词： optical design infrared diffractive optics

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Studying the back-scattering of light for the development of acousto- optical filter with an improved spectral resolution 17

Studying the back-scattering of light for the development of...

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conference on current developments in lens design and optical engineering xvii

作者： Shcherbakov, Alexandre S. Arellanes, Adan Omar Chavushyan, Vahram Natl Inst Astrophys Opt & Elect INAOE Luis Enrique Erro 1 AP 51 & 216 Puebla 72000 Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

We consider the collinear backward light scattering as one of potential physical mechanisms for creating an advanced collinear acousto-optical filter with significantly improved spectral resolution. Within co-directional crystalline collinear acousto-optical filters, the resolution is inversely proportional to the material's birefringence, which is similar to 0.1 in the best case of LiNbO3-crystal. For the backward light scattering this parameter is replaced by the twice refractive index, so that the gain achieves > 45 times in LiNbO3-crystal. Thus, one can expect the resolution similar to 0.002 angstrom instead of the val similar to 0.1 0.2 recently obtained by us experimentallor co-directional geometry in that crystal. Moreover, the collinear backward light scattering can be implemented in an extended amount of available materials. However, the main limitation for applying the phenomenon is the acoustic attenuation in ultra-high frequency range peculiar to the materials for acousto-optical filters. Linear acoustic attenuation reduces the length of acousto-optical interaction and limits the spectral resolution. At an initial stage, our studies are concentrated on physical aspects of this phenomenon as well as on possibilities of its application to creating the acousto-optical filters of a high resolution. In particular, the frequency band-shapes of the scattered light intensity exhibit a tendency to specific acousto-optical nonlinearity, i.e. to more and more rectangular profile as the acoustic power density grows. Results of this analysis confirm the above-noted estimations for a triplet of trigonal acousto-optical crystals, having possibly lower acoustic attenuation.

关键词： acousto-optics collinear acousto-optical filter backward light scattering improved spectral resolution astrophysical applications

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The entrance pupil of an on-axis stigmatic singlet lens 11

The entrance pupil of an on-axis stigmatic singlet lens

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conference on current developments in lens design and optical engineering XXI

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

We derive a closed-form expression for the entrance pupil of the on-axis stigmatic singlet lens, and discuss its performance for a variety of conditions, including positive or negative indices of refraction, and diffe... 详细信息

ISBN: (数字)9781510637719

ISBN: (纸本)9781510637719

关键词： optical design spherical aberration telescopes aberration theory

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Development of surgical binoculars on the basis of polymeric lenses 18

Development of surgical binoculars on the basis of polymeric...

引用

conference on current developments in lens design and optical engineering xviiI

作者： Voznesenskaya, Anna Andreev, Lev Ekimenkova, Alisa ITMO Univ 49 Kronverksky Av St Petersburg 197101 Russia

The basis of this work is a modification of the modern design of surgical binoculars based on substitution of mineral glasses with polymer lenses. Aberration analyses of the proposed systems is shown.

ISBN: (纸本)9781510612082;9781510612075

关键词： polymeric lenses medical optics surgical binoculars optical system design ergonomics

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design of an expander lens for an MWIR zoom camera using the third-order aberration analysis 23

Design of an expander lens for an MWIR zoom camera using the...

引用

conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics conference

作者： Yun, Min-Seok Ryu, Tae-Sik Park, Sung-Chan Dankook Univ Dept Phys 119 Dandae Ro Cheonan Si 31116 Chungcheongnam South Korea

ISBN: (纸本)9781510654198;9781510654181

This study presents the methods for designing an expander lens for an MWIR zoom lens through the third-order aberration analysis and evaluating the optical zoom system. This expander lens is used to enlarge the focal lengths of an original main zoom lens two times, which unfortunately doubles the aperture size of the expander lens elements. Thus, this extended apertures significantly generate the aberrations of a zoom system. To solve the problem, an expander lens has been designed using the third-order aberration analysis numerically. Since an MWIR optical system uses a cooled detector, this zoom system should be designed to eliminate the narcissus effect. Using this design approach, we efficiently obtain an expander lens for an MWIR zoom system satisfying the current requirements.

关键词： Zoom lenses Monochromatic aberrations optical spheres Mid-IR Chemical elements lens design Transparent conductors Modulation transfer functions Spherical lenses Infrared radiation

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Using the toroidal and cylindrical lenses to project the RGB LEDs sources on the lens array with elliptic solid angle calculation for the DLP projector

Using the toroidal and cylindrical lenses to project the RGB...

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conference on current developments in lens design and optical engineering XIV

作者： Sun, Wen-Shing Natl Cent Univ Dept Opt & Photon Chungli 32001 Taiwan

We present an asymmetric condenser with an elliptical solid angle distribution and improves system efficiency of 15.5%. The proposed system on the DMD achieves the light efficiency of 63.4% and the average deviation o... 详细信息

ISBN: (纸本)9780819496911

关键词： RGB LEDs DLP projector lens array elliptical solid angle

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lens design USING A MINIMUM NUMBER OF GLASSES 4

LENS DESIGN USING A MINIMUM NUMBER OF GLASSES

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conference on current developments in optical design and optical engineering IV

作者： ZHANG, SY SHANNON, RR UNIV ARIZONA CTR OPT SCITUCSONAZ 85721

ISBN: (纸本)0819415871

Due to increasing environmental limitations on the use of certain raw materials used to make optical glasses, there is now an economic desire to minimize the number of glasses used in lens design. This paper presents the results of a study to create a suggested universal catalogue that contains the minimum number of glasses needed to satisfy most possible lens designs. A nearly symmetric double Gauss lens is used in the glass selection process. As part of this study, the relationship between the error function and the number of glasses chosen is studied, and in addition, a glass range study is also carried out. Three different lens libraries were studied using the global optimization method and the most frequently chosen glasses were then compiled into the suggested universal glass catalogue. A suggested universal glass catalogue constructed from this study is presented.

关键词： optical GLASS lens design

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Visible-NIR imaging optics for a Fourier transform spectrometer

Visible-NIR imaging optics for a Fourier transform spectrome...

引用

conference on current developments in lens design and optical engineering V

作者： Thibault, S Reecht, M Lavigne, JF Desnoyers, N INO Opt Design & Optomech Grp St Foy PQ Canada

ISBN: (纸本)0819454613

We present details of optical design, opto-mechanical design and testing of a visible-NIR imaging optical system for a Fourier transform spectrometer dedicated to astronomical application at the Mont Megantic Observatory (Observatoire du Mont Megantic, OMM, located south Quebec city, Canada). design considerations as well as testing and experimental results are presented.

关键词： astronomical instrumentation optical design opto-mechanical design imaging Fourier transform spectrometer

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