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

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optical design of reflective wide-field cameras

Optical design of reflective wide-field cameras

引用

Conference on current developments in lens design and optical engineering IX

作者： Sasian, Jose Univ Arizona Coll Opt Sci Tucson AZ 85721 USA

ISBN: (纸本)9780819472809

This paper discusses some methodologies that apply to the optical design of reflective wide-field cameras. Among the methods considered are off-axis and eccentric pupil systems, concatenation of systems, tilted component systems, aberration theory, and confocal systems. The goal of the paper is to review design methods. In particular some systems are shown to illustrate two methodologies.

关键词： optical design mirror design wide-field reflective optics unobscured

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design AND CONSTRUCTION OF AN ASTROMETRIC ASTROGRAPH

DESIGN AND CONSTRUCTION OF AN ASTROMETRIC ASTROGRAPH

引用

CONF ON current developments IN optical design AND optical engineering 2

作者： VUKOBRATOVICH, D VALENTE, T SHANNON, RR HOOKER, R SUMNER, RE Optical Sciences Ctr./Univ. of Arizona (United States)

ISBN: (纸本)0819409251

The optical Sciences Center, University of Arizona, has designed and constructed a unique 'red corrected' astrometric astrograph objective lens for the United States Naval Observatory. A five element design, with an integral Schott OG550 filter, was developed to meet the requirement for a 2060 mm focal length, f/10 system. The lens provides a nearly zero distortion flat field of 5 by 5 degrees in the sky. A weight limit of 55 kg led to the use of a titanium lens barrel. Assembly tolerances are satisfied through the use of elastomeric subcell mounting of the individual elements, and an adjustable final element. The lens is hermetically sealed and uses a filter/dessicator system to insure the long term cleanliness of the optics.

关键词： Tolerancing Distortion Adhesives Titanium Assembly tolerances optical design optical filters Photography Glasses lens design

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lens design USING A MINIMUM NUMBER OF GLASSES 4

LENS DESIGN USING A MINIMUM NUMBER OF GLASSES

引用

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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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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optical-PERFORMANCE OF AXIAL GRADIENT AND ASPHERIC SURFACE lensES - STUDY AND ANALYSIS 4

OPTICAL-PERFORMANCE OF AXIAL GRADIENT AND ASPHERIC SURFACE L...

引用

Conference on current developments in optical design and optical engineering IV

作者： KASSIM, AM SHEALY, DL AL QUDS UNIV COLL SCI & TECHNOLDEPT PHYSJERUSALEMISRAEL

ISBN: (纸本)0819415871

Using the caustic merit function for plane waves incident upon a singlet lens, a comparison between the optical performance of the lens using an axial gradient index with spherical surfaces or aspheric surfaces with constant index material has been investigated. Results indicate that the use of an inhomogeneous medium for the lens material is more effective in the controlling aberrations than the use of aspheric surfaces for a similar lens.

关键词： GRIN lenses Electronic filtering Aspheric lenses lenses Ray tracing Geometrical optics Refractive index Spherical lenses lens design Gradient-index optics

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optical systems for free-space laser communications

Optical systems for free-space laser communications

引用

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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High performance of color mixing and projection lighting based on color LEDs

High performance of color mixing and projection lighting bas...

引用

Conference on current developments in lens design and optical engineering XI - and Advances in Thin Film Coatings VI

作者： Chien, Wei-Ting Ho, Shin-In Tsai, Chang-Yu Sun, Ching-Cherng Natl Cent Univ Inst Lighting & Display Sci Dept Opt & Photon Chungli 320 Taiwan

ISBN: (纸本)9780819482822

In this paper, we propose and demonstrate a novel design to make color mixing and projection of RGB LEDs. The optical elements include a high reflective light pipe, a volume scattering diffuser and a TIR lens. The system optical efficiency is around 46 % while the color is well mixing for the cases at the CCTs of 6500K, 4500K and 3000K.

关键词： color mixing RGB LEDs TIR lens diffuser correlated color temperature

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Variable-focus liquid lens for portable applications

Variable-focus liquid lens for portable applications

引用

Conference on current developments in lens design and optical engineering V

作者： Kuiper, S Hendriks, BHW Huijbregts, LJ Hirschberg, A Renders, CA van As, MAJ Philips Res Eindhoven NL-5656 AA Eindhoven Netherlands

ISBN: (纸本)0819454613

The meniscus between two immiscible liquids can be used as an optical lens. A change in curvature of this meniscus by electrowetting leads to a change in focal distance. We demonstrate that two liquids in a tube form a self-centered tunable lens of high optical quality. Several properties were studied, such as optical performance, electrical characteristics and dynamic behavior. We designed and constructed a miniature camera module based on this tunable lens and show that it is very well suited for use in portable applications.

关键词： variable lens tunable lens liquid lens electrowetting dynamics camera

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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

引用

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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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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