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

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design Efficiency of 3188 optical designs

Design Efficiency of 3188 Optical Designs

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conference on current developments in Lens design and optical engineering IX

作者： Cakmakci, Ozan Rolland, Jannick P. Thompson, Kevin P. Rogers, John Univ Cent Florida CREOL Coll Opt & Photon Orlando FL 32816 USA Opt Res Associates Pasadena CA USA

ISBN: (纸本)9780819472809

In this study, we take a data-driven approach to study the design efficiency of a variety of optical designs. Efficiency is defined to be the number of resolvable spots across the image per lens element. 3188 designs were selected from a commercially available lens database. Each design was imported into a raytrace code, briefly optimized, and the number of resolvable spots was computed. Examples of efficient designs within this dataset are shown. Four design efficiency groupings are created and discussed separately: 1) all-spherical, monochromatic designs, 2) monochromatic designs with some aspheres, 3) all-spherical, polychromatic designs, and 4) polychromatic designs with some aspheres. Zoom lens systems were excluded from the dataset. The results of the analysis are intended to answer the question of "how many elements does it take, as a minimum, to deliver a certain number of resolved spots?"

关键词： optical system design efficiency database analysis

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Progress report on the optical system for closed-loop testing of the multiple mirror telescope adaptive secondary mirror

Progress report on the optical system for closed-loop testin...

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8th conference on current developments in optical design and optical engineering

作者： Sarlot, RJ Bresloff, CJ Burge, JH Fitz-Patrick, BC McGuire, PC Stamper, BL Zhao, CY Univ Arizona Steward Observ Tucson AZ 85721 USA

ISBN: (纸本)0819432652

Steward Observatory is completing the manufacture of a deformable f/15 secondary mirror for the 6.5m Multiple Mirror Telescope conversion that will, along with the wavefront sensing system, compensate for atmospheric turbulence. A potential difficulty of an adaptive secondary mirror is the ability to verify the commanded mirror shapes of a large convex deformable surface. An optical design is presently being implemented to test the deformable mirror's closed loop control system by optically projecting an artificial star to simulate starlight in the actual telescope. The test system has been designed to verify the control system by fitting into both a laboratory test structure as well as the telescope support structure itself. The optical design relies on two wavelength computer generated holograms used to remove spherical aberration as well as aid in the alignment of the test system optics by projecting alignment patterns.

关键词： adaptive secondary aspheric testing Multiple Mirror Telescope Shimmulator

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optical design of an athermalised dual field of view step zoom optical system in MWIR 18

Optical design of an athermalised dual field of view step zo...

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conference on current developments in Lens design and optical engineering XVIII

作者： Kucukcelebi, Doruk Roketsan Kemalpasa Mahallesi Sehit Yuzbasi Adem Kutlu Soka TR-06780 Ankara Turkey

ISBN: (纸本)9781510612082;9781510612075

In this paper, the optical design of an athermalised dual field of view step zoom optical system in MWIR (3.7 mu m-4.8 mu m) is described. The dual field of view infrared optical system is designed based on the principle of passive athermalization method not only to achieve athermal optical system but also to keep the high image quality within the working temperature between -40 degrees C and + 60 degrees C. The infrared optical system used in this study had a 320 pixel x 256 pixel resolution, 20 mu m pixel pitch size cooled MWIR focal plane array detector. In this study, the step zoom mechanism, which has the axial motion due to consisting of a lens group, is considered to simplify mechanical structure. The optical design was based on moving a single lens along the optical axis for changing the optical system's field of view not only to reduce the number of moving parts but also to athermalize for the optical system. The optical design began with an optimization process using paraxial optics when first-order optics parameters are determined. During the optimization process, in order to reduce aberrations, such as coma, astigmatism, spherical and chromatic aberrations, aspherical surfaces were used. As a result, athermalised dual field of view step zoom optical design is proposed and the performance of the design using proposed method was verified by providing the focus shifts, spot diagrams and MTF analyzes' plots.

关键词： Dual field of view step zoom optical design paraxial optics athermalization Mid Wave Infrared (MWIR)

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An Optimal lens arrangement in high numerical aperture objectives 22

An Optimal lens arrangement in high numerical aperture objec...

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conference on current developments in Lens design and optical engineering XXII

作者： Ryzhikov, Lev Independent Researcher (United States)

ISBN: (数字)9781510644670

ISBN: (纸本)9781510644670

Demand for High NA objective lenses with diffraction limited image quality is growing. This demand translates in design more complex optical system with many optical components. In order to optimize the most favorable arrangement of optical components new design methodology based on functional separation lens group in high numerical aperture (NA) objective was developed. For this purpose, all lens components were divided on the three-lens group: front group, middle group and output lens group. The front lens group includes front lens (thick meniscus for dry type of objective or thick piano-convex lens for immersion objective) and several a planatic shape meniscus lenses. The middle lens group consists of several cemented lens components (doublets or triplets) and output lens group includes "Double Gauss" lens system or combination of cemented doublet with one or two singlet lenses. The total number of lenses in such types of optical system can reach 15-16 or even more. design an optimal composition (optical components arrangement) for high numerical aperture objective lens will be discussed. Quantitative related parameter for optimal objective lens component's structure will be proposed.

关键词： Objectives Glasses Refractive index optical components Microscopes Monochromatic aberrations Aberration correction Chromatic aberrations Flint glass Crown glass

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Finite-difference method in non-orthogonal curvilinear coordinate system used for electron gun design

Finite-difference method in non-orthogonal curvilinear coord...

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conference on current developments in optical design and engineering VII

作者： Wang, C Yin, HC Xue, KX Tong, LS Southeast Univ Elect Res Inst Nanjing 210018 Jiangsu Peoples R China

ISBN: (纸本)0819428841

A Finite-Difference Method in Non-Orthogonal Curvilinear Coordinate System (FDM-NOCCS) is the combination of the domain transformation technique and the Finite-Difference Method (FDM). It has the visualization and simplification of the traditional FDM. On the other hand. it overcomes the weakness of EDM in dealing with complicated boundary shapes, averts the interpolation between the grid points in the vicinities of boundaries, and also avoids the abnormalism in the transformation from the physical domain to the computational domain. The FDM-NOCCS is used in the computer aided design of electron gun for color cathode ray tube. Compared with the formal FDM, the FDM-NOCCS can save quite a lot of CPU time and computer memory. FDM-NOCCS works well with the complicated e-gun systems design.

关键词： electron gun computer aided design finite difference method curvilinear coordinate system

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Three dimensional point spread function of a high aperture optical system

Three dimensional point spread function of a high aperture o...

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conference on current developments in Lens design and optical engineering Xiv

作者： Borovytsky, Volodymyr Chorna, Viktoriia Solovei, Alex Nat Techn Univ Ukraine KPI Dept Opt Engn UA-03056 Kiev Ukraine

ISBN: (纸本)9780819496911

The paper presents the mathematical technique for precise calculation of the three dimensional point spread function (3D PSF) of a high aperture optical system. The proposed technique is based on Huygens-Fresnel principle: a spherical wave at an exit pupil is considered as a numerous set of elementary secondary light sources. They emit spherical coherent electro-magnetic waves. All these waves form a definite distribution of summarized complex amplitudes in a three dimensional space near a focal point. This distribution is used for calculation of the distribution of effective intensity which takes into account the influence of inclined optical beams. The comparison analysis of this approach and the techniques based on multi-dimensional Fourier transforms are discussed.

关键词： point spread function optical system pupil function Fourier transform intensity distribution optical microscopy spatial resolution

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Comparison of Geometrical and Diffraction optical Transfer Functions 16

Comparison of Geometrical and Diffraction Optical Transfer F...

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conference on current developments in Lens design and optical engineering XVI

作者： Mahajan, Virendra N. Antonio Diaz, Jose Univ Arizona Coll Opt Sci Tucson AZ 85721 USA Univ Granada Dept Opt E-18071 Granada Spain

ISBN: (纸本)9781628417449

The geometrical and diffraction point-spread functions of an optical imaging system have been reviewed and compared in the past [V. N. Mahajan, "Comparison of geometrical and diffraction point-spread functions," SPIE Proc. 3729, 434-445 (1999)]. In this paper, we review and compare its corresponding optical transfer functions. While the truth lies with the diffraction OTF, it is considered easier and quicker to calculate the geometrical Oil, especially for large aberrations. We briefly describe the theory of the two OTFs, and explore the range of spatial frequencies and the magnitude of the primary aberrations over which the geometrical OTF may provide a reasonable approximation of the diffraction OTF.

关键词： optical transfer functions Monochromatic aberrations Spatial frequencies Diffraction Actinium Imaging systems Geometrical optics optical imaging Modulation transfer functions Fourier transforms

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Double micro-prism array design for reducing dispersion on prism-based stereo camera system

Double micro-prism array design for reducing dispersion on p...

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conference on current developments in Lens design and optical engineering Xiv

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

We apply a digital camera with two prism arrays to capture a stereo image of the corrected chromatic aberration and distortion. The doublet prisms are used to correct chromatic aberration. The camera distortion with t... 详细信息

ISBN: (纸本)9780819496911

关键词： stereo image two prism arrays chromatic aberration distortion

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design and fabrication of low-cost thermal imaging optics using precision chalcogenide glass molding

Design and fabrication of low-cost thermal imaging optics us...

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conference on current developments in Lens design and optical engineering IX

作者： Curatu, George LightPath Technol Orlando FL 32826 USA

ISBN: (纸本)9780819472809

Aspheric and diffractive surfaces in infrared materials are traditionally fabricated by single point diamond turning, which is a high-cost, low-throughput process, not suitable for low-cost, high-volume applications. Precision molding of chalcogenide glasses is a novel process we developed to allow the efficient fabrication of quality infrared optics in large volumes. In this paper we present the advantages and particularities of designing thermal imaging lenses for high-volume applications using precision molded chalcogenide glasses. As an example, we present a compact 19 mm F/1.1 infrared lens design for a 320 x 240 uncooled detector array operating from 8 to 14 microns. The excellent image quality and transmission of tested prototypes prove that precision molding of chalcogenide glasses is an ideal optical fabrication technology for the high-volume production of infrared optics.

关键词： infrared lens design thermal imaging precision glass molding chalcogenide glasses athermal design diffractive optics

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current developments in optical design and engineering V

Current Developments in Optical Design and Engineering V

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current developments in optical design and engineering V

ISBN: (纸本)0819418994

This conference proceedings contains 31 papers on optical systems, devices and materials. The main topics are: design of anastigmat microscopes;abnormal dispersion liquids;optical imaging systems;telescopes;speckle cameras;spaceborne optical instruments;polymeric optical components;lidar;optical design and analysis;optical waveguides;infrared cameras;etc.

关键词： optical systems

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