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

共 446 条记录，以下是31-40 订阅

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Some methods for determining the limit of potential image quality of optical systems of various complexities using the database 17

Some methods for determining the limit of potential image qu...

引用

conference on current developments in lens design and optical engineering xvII

作者： Bezdidko, S. JSC Krasnogorsky Zavod Krasnogorsk Moscow Region Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

In the article some methods for processing the information contained in a database are offered with the purpose of extraction of the knowledge, the experience and the intuition of the designers, coded in the database. It gives much attention to the methods for determinating limit potential image quality of optical systems of various complexities.

关键词： lens design image quality orthogonal aberrations limiting aberration correction database

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Research on properties of an infrared imaging diffractive element 15

Research on properties of an infrared imaging diffractive el...

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conference on current developments in lens design and optical engineering xv

作者： Rachon, M. Wegrzynska, K. Doch, M. Kolodziejczyk, A. Siemion, A. Suszek, J. Kakarenko, K. Sypek, M. Warsaw Univ Technol Fac Phys PL-00662 Warsaw Poland

ISBN: (纸本)9781628412192

Novel thermovision imaging systems having high efficiency require very sophisticated optical components. This paper describes the diffractive optical elements which are designed for the wavelengths between 8 and 14 mu m for the application in the FLIR cameras. In the current paper the authors present phase only diffractive elements manufactured in the etched gallium arsenide. Due to the simplicity of the manufacturing process only binary phase elements were designed and manufactured. Such solution exhibits huge chromatic aberration. Moreover, the performance of such elements is rather poor, which is caused by two factors. The first one is the limited diffraction efficiency (c.a. 40%) of binary phase structures. The second problem lies in the Fresnel losses coming from the reflection from the two surfaces (around 50%). Performance of this structures is limited and the imaging contrast is poor. However, such structures can be used for relatively cheap practical testing of the new ideas. For example this solution is sufficient for point spread function (PSF) measurements. Different diffractive elements were compared. The first one was the equivalent of the lens designed on the basis of the paraxial approximation. For the second designing process, the non-paraxial approach was used. It was due to the fact that f/# was equal to 1. For the non-paraxial designing the focal spot is smaller and better focused. Moreover, binary phase structures suffer from huge chromatic aberrations. Finally, it is presented that non-paraxially designed optical element imaging with extended depth of focus (light-sword) can suppress chromatic aberration and therefore it creates the image not only in the image plane.

关键词： infrared diffractive optics extended depth of focus Light Sword optical Element

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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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optical designs of the objectives for special studies in polarizing microscope 19

Optical designs of the objectives for special studies in pol...

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19th conference on current developments in lens design and optical engineering

作者： Frolov, Dmitry N. Vinogradova, Olga A. Frolov, Alexey D. Tabachkov, Alexey G. Project Labor Microscopes Zapovednaya St 51A St Petersburg 194356 Russia

Presents the results of the optical design of lens objectives for polarization light microscopes, including to ensure that the special techniques. Sometimes such methods require the use of objectives similar magnifica... 详细信息

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

关键词： Microscopy lens system design optical design and fabrication Objectives for microscopes lens objectives system design Objectives for polarizing microscopes Polarizing microscopy

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A File Sharing Site for lens designs 23

A File Sharing Site for Lens Designs

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

作者： Reiley, Daniel J. Claff, William Burbank (United States) Sherborn (United States)

ISBN: (纸本)9781510654198;9781510654181

A file sharing site for lens designs has been started at *** . This site currently contains almost 2,000 optical models. Many engineering disciplines have built public libraries of useful, publicly-available content. For example, GITHUB(1) has publicly-available software;GrabCAD(2), 3DcontentCentral(3), TurboSquid(4) all offer mechanical engineering content such as solids files;TI, Analog, etc. offer reference designs for electronics engineers. Generally, these services aren't just file repositories;they also offer collaboration, yielding more models, more refinement, more discussion, more community, and more to learn. lens designers can also benefit from such design libraries. This paper explains the utility and structure of the site.

关键词： lens design

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High efficiency LED street light using micro-lens array

High efficiency LED street light using micro-lens array

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

作者： Lee, Xuan-Hao Sun, Ching-Cherng Natl Cent Univ Inst Lighting & Display Sci Dept Opt & Photon Chungli 320 Taiwan

In the paper, we present a design of street light with use of a TIR lens and a specific diffuser of micro-lens array. In the illumination area of 39 m x 16.4 m, the power, output flux and the efficiency of the street ... 详细信息

ISBN: (纸本)9780819482822

关键词： light emitting diode street light micro-lens array diffuser

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Integrated optical design

Integrated optical design

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conference on current developments in lens design and optical engineering II

作者： Forney, P Lockheed Martin Space Syst Co Missiles & Space Operat Ctr Adv Technol Sunnyvale CA 94089 USA

ISBN: (纸本)0819441554

In order to produce an instrument or sensor design in the face of demanding environmental constraints of a spaceborne system, an integrated approach to sensor design has been developed that incorporates design tools for: optical design, mechanical design, structural, stray light and thermal analysis. This integrated approach can be extended to the entire payload design and its increased constraints.

关键词： optical design Computer aided design MATLAB Mirrors Sensors Mechanical engineering Systems modeling Thermal modeling Integrated modeling Integrated optics

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Vibration Analysis and Testing for the LLST optical Module 15

Vibration Analysis and Testing for the LLST Optical Module

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conference on current developments in lens design and optical engineering xv

作者： Weatherwax, Michele S. Doyle, Keith B. MIT Lincoln Lab Lexington MA 02420 USA

ISBN: (纸本)9781628412192

A lunar orbiting space terminal was recently developed as part of NASA's Lunar Laser Communications Demonstration program. The space terminal uses a 10 centimeter, inertially-stabilized telescope and a 0.5 watt beam to transmit data at up to 622Mbps between the Moon and one of several ground terminals on Earth. Tight coupling between analysis and testing was used to ensure both performance and survival requirements were met in the operational and non-operational vibration environments. Performance requirements were driven by the need to meet a 4.2 mu rad pointing stability requirement in the operational vibration environment. A highly-correlated FEA model was developed using vibration testing to extrapolate the behavior of the system beyond the practical limits of the vibration test bed. The launch load non-operational vibration environment was simulated through both analysis and testing using force-limiting to avoid over designing and over testing the sensitive optics. The iterative and associated challenges of the vibration analysis and testing effort are discussed to show how those efforts helped enable the successful launch, deployment, and ultimately demonstration of NASA's first space laser communications program.

关键词： model correlation finite element analysis (FEA) force limiting vibration testing vibration analysis boundary conditions LLCD lunar laser communications

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optical design of reflective wide-field cameras

Optical design of reflective wide-field cameras

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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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Novel global optimization algorithms: binary construction and the saddle-point method

Novel global optimization algorithms: binary construction an...

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conference on current developments in lens design and optical engineering XIII

作者： Dilworth, Donald C. Optical Systems Design Inc. (United States)

ISBN: (纸本)9780819492036

This paper describes our experience with global lens optimization using algorithms that can modify an existing lens construction in an optimal way or create an entirely new construction. The binary-search method assembles lens elements according to the bits in a binary number, ensuring that all combinations of power are tested, while the saddle-point method can either add elements to a starting lens or start from scratch. The latter algorithm also naturally leads to a method of removing an element in an optimum way, which can sometimes simplify a lens with no loss of quality.

关键词： Global optimization lens design saddle-point lens optimization PSD algorithm

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