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检索条件"任意字段=Current Developments in Optical Design and Optical Engineering 1991"

共 1069 条记录，以下是141-150 订阅

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optical design for a breadboard high resolution spectrometer for SIRTF/IRS 6

Optical design for a breadboard high resolution spectrometer...

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current developments in optical design and engineering VI Conference

作者： Brown, RJ Houck, JR VanCleve, J Ball Aerospace and Technologies Corp. (United States) Cornell Univ. (United States)

ISBN: (纸本)0819422517

The optical design of a breadboard high resolution infrared spectrometer for the IRS instrument on the SIRTF mission is discussed. The spectrometer uses a crossed echelle grating configuration to cover the spectral region from 10 to 20 mu m with a resolving power of approximate to 600. The all reflective spectrometer forms a nearly diffraction limited image of the two dimensional spectrum on a 128 x 128 arsenic doped silicon area array with 75 mu m pixels. The design aspects discussed include, grating numerology, image quality, packaging and alignment philosophy.

关键词： spectrometer infrared echelle cryogenics grating SIRTF IRS

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optical design ANALYSIS INCORPORATING ACTUAL SYSTEM INTERFEROMETRIC DATA

OPTICAL DESIGN ANALYSIS INCORPORATING ACTUAL SYSTEM INTERFER...

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CONF ON current developments IN optical engineering AND COMMERCIAL OPTICS

作者： WILLEY, G PATCHIN, R CAI a Division of RECON/OPTICAL INC. (United States)

ISBN: (纸本)0819402044

Interferometric measurements of real surfaces are combined with computed optical design analyses. To accomplish this, a special software interface driver was developed to accept serial optical Path Difference (OPD) data from a Zygo Mark III interferometer, apply standard algorithms, and convert the measured data into a CODE V readable file. Analysis was conducted on a large aperture developmental optical system containing a fold mirror of eggcrate construction. MTF performance of the entire system was computed as were the contributions of individual surfaces to overall optical quality. Diffraction effects due to the rib structure of the eggcrate mirror were apparent in this analysis, as were the effects of gravity and figure components of the wavefront. This hybrid analysis demonstrates the usefulness of coupling interferometry with an optical design program in the analysis of complex optical systems.

关键词： Mirrors Modulation transfer functions Wavefronts Diffraction Interferometry Code v Computing systems optical engineering Data modeling Error analysis

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Impact of device characteristics on optical processor design (Invited Paper)

Impact of device characteristics on optical processor design...

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Devices for optical Processing

作者： Turpin, Terry M. Essex Corp. Columbia MD USA

ISBN: (纸本)0819406902

optical processor design is the art of architecting a computing machine with components that are either currently available or which can be developed with a reasonable extension of current technology. There is no difference between this and the design of a processor using any other technology except that in optics the component selection is more limited and the cost of implementing certain classes of operations is far less. This paper outlines the characteristics of many current components and the impact of these characteristics on optical architectures. At the present time the most critical components in optical processing are at the interface with other processing technologies. These critical components are spatial light modulators and photosensors. Advances in semiconductor technology and opto-electronics for optical communications may greatly reduce the current component limitations. In this paper suggestions are provided for new component development and the impact of such developments on optical processing technology is discussed.

关键词： optical Data Processing

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Analysis of three-element zoom systems for laser beam expanders with tunable-focus lenses 16

Analysis of three-element zoom systems for laser beam expand...

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Conference on current developments in Lens design and optical engineering XVI

作者： Kulmon, Pavel Miks, Antonin Novak, Pavel Novak, Jiri Czech Tech Univ Fac Civil Engn Dept Phys Prague 16629 Czech Republic

ISBN: (纸本)9781628417449

Our work is focused on the problem of a theoretical analysis of imaging properties and an initial optical design of a three-element zoom optical system for laser beam expanders using lenses with a tunable focal length. Equations that enable to calculate basic paraxial properties and parameters of such optical systems are derived Finally, the derived equations are applied on an example of calculation of parameters of the three-element zoom system for the laser beam expander.

关键词： geometric optical design first-order optics zoom lenses laser beam expander Gaussian beam tunable-focus lenses

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Chromatic error correction of diffractive optical elements at minimum etch depths 15

Chromatic error correction of diffractive optical elements a...

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Conference on current developments in Lens design and optical engineering XV

作者： Barth, Jochen Guehne, Tobias Airbus Def & Space Landshuter Str 26 D-85716 Unterschleissheim Germany Airbus Def & Space D-81663 Munich Germany

ISBN: (纸本)9781628412192

The integration of diffractive optical elements (DOE) into an optical design opens up new possibilities for applications in sensing and illumination. If the resulting optics is used in a larger spectral range we must correct not only the chromatic error of the conventional, refractive, part of the design but also of the DOE. We present a simple but effective strategy to select substrates which allow the minimum etch depths for the DOEs. The selection depends on both the refractive index and the dispersion.

关键词： Diffractive optics Aberration compensation

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design OF THE MULTIWAVELENGTH SCOPHONY INFRARED SCENE PROJECTOR

DESIGN OF THE MULTIWAVELENGTH SCOPHONY INFRARED SCENE PROJEC...

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Conference on current developments in optical design and optical engineering III

作者： THOMPSON, KP KIRCHER, JR MARLOW, SA KORNISKI, RJ RICHWINE, RA OPT RES ASSOCIATES FRAMINGHAMMA 01701

ISBN: (纸本)081941249X

An all acousto-optic infrared scene projector (IRSP) has been developed for use in evaluating thermal-imaging guidance systems at the Kinetic Kill Vehicle Hardware-in-the-Loop Simulator (KHILS) facility located at Elgin AFB, Florida. The IRSP is a laser source based projector incorporating Scophony illumination and scanning methods to produce 96 X 96 pixel multi-wavelength images at very high frame rates (400 Hz). The IRSP is composed of five functionally similar optical trains, four of which are fed with a different `color' infrared laser. The separate scenes from each optical train are then combined and projected simultaneously into the imaging guidance system.

关键词： Projection systems Acousto-optics Diffusers optical design Scanners Relays Laser sources Infrared radiation Infrared imaging Thermography

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BUCHDAHL DISPERSION MODEL FOR GRADIENT-INDEX GLASS FAMILIES 4

BUCHDAHL DISPERSION MODEL FOR GRADIENT-INDEX GLASS FAMILIES

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Conference on current developments in optical design and optical engineering IV

作者： MANHART, PK PAGANO, RJ LIGHTPATH TECHNOL INC TUCSONAZ 85704

optical elements which are made out of macro gradient refractive material are represented by lines, as opposed to points, on the glass map (nd Vs. vd diagram). Thus, optical designers need account for gradient dispers... 详细信息

ISBN: (纸本)0819415871

optical elements which are made out of macro gradient refractive material are represented by lines, as opposed to points, on the glass map (n_d Vs. v_d diagram). Thus, optical designers need account for gradient dispersion as well as gradient index. A dispersion model for the material must be readily available and optical design programs must be capable of defining and maintaining this relationship before and during optimization, simplifying user input and confining the material to walk a well defined path on the glass map. Thinking in terms of lines on the glass map for arbitrary glass families yields a simple dispersion model based on least squares fitting of Buchdahl coefficients. This paper introduces the concept of glass lines and outlines a technique to construct a dispersion model for any contiguous family of gradient refractive material.

关键词： Glasses optical design Gradient-index optics Diffusion Lead optical components Lead glass Refraction optical properties Optimization (mathematics)

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Theory of two-component zoom systems

Theory of two-component zoom systems

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current developments in optical design and optical engineering 1991

作者： Oskotsky, Mark FLIR Systems Inc. PortlandOR97224 United States

Two-component zoom systems are a basic part of all zoom systems. The first zoom systems appeared at the end of the 19th century in Germany. Dunouer1 has shown the possibility of the creating two-component zoom converters with a definite magnification range and the appropriate correlation between the optical powers of the components. After Dunouer several types of the two-component zoom objective lenses have been designed.2-5 Typically, they had small magnification range (less than 2X) and were more complex than was necessary. In the 1970's designers began to pay more attention to the creation of twocomponent zoom projection systems.6,7 Most recently, special telecinema zoom projection systems have been created. An optical telecinema system consists of a zoom projection system and a prism splitter to split the beam into a three colour channels. Its purpose is to project 8,16 and 35mm movies in a Television.8,9 Such a zoom system is supposed to have telecentric chief rays in image space and a long distance from the last surface to the image. The creation of new zoom systems has to be founded on the general theory of first and third order design to find the optimum parameters of the system. © 1991 SPIE. All rights reserved.

关键词： optical correlation

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RAYTRACING HOMOGENIZING MIRRORS FOR SYNCHROTRON X-RAY-LITHOGRAPHY

RAYTRACING HOMOGENIZING MIRRORS FOR SYNCHROTRON X-RAY-LITHOG...

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： HOMER, M ROSSER, RJ SPEER, RJ Imperial College of Science Technology and Medicine (United Kingdom) Princeton X-Ray Laser Inc. (United States) Grating Measurements Ltd. (United Kingdom)

ISBN: (纸本)0819406554

An original plastic-lens array molded integrally as one block having a function of forming a unit-magnification erect image has been developed. The lens array consists of eight lens devices. The lens device has a roof prism, a reflecting v-groove, and a pair of convex-lens surfaces. A prototype of the lens arrays are arranged side by side. Thickness of the lens array is 4.5 mm, distance between object and image planes is 14.4 mm, array pitch is 1.3 mm, and the effective imaging region is 220 mm. The average modulation transfer function (MTF) at 41 p/mm of the lens array is 76% in the row direction (Y-direction) and 80% in the direction (X-direction) normal to Y-direction. The average F/NO in line-scanning is 1.8. The average irradience unevenness in line-scanning is 17%. The focal depth is +/- 0.6 mm in the area with the MTF being 60% or more. With this prototype a high-resolution image was attained. So, the lens arrays can be applied to imaging devices for use in a compact facsimile, image scanner, LED printer, and so on.

关键词： Mirrors Lithography Synchrotrons Ray tracing X-ray lithography Holmium Reflectivity optical engineering optical design X-rays

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NON-POLARIZATION PARALLEL BEAMSPLITTER

NON-POLARIZATION PARALLEL BEAMSPLITTER

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CONF ON current developments IN optical design AND optical engineering 2

作者： XU, FY Shandong Architectural Engineering Institute (China)

ISBN: (纸本)0819409251

A little displacement polychromatic parallel non-polarization beamsplitter, which is composed of two elements, has been introduced in this article. It has been studied by theoretical analysis and experiment, and has been given the optimal structure. The displacement of the beamsplitter can be designed in need, which is about 1.0 - 3.0 mm. The polarization degree of the emergent light is below 1.2%, transmission is above 90%, transmission range is from 300 nm to 2500 nm. Its structure is simple, making convenient and loss low.

关键词： Polarization Beam splitters Calcite Wave plates Crystal optics Crystals Laser crystals Geometrical optics Polarizers Prisms

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