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

共 635 条记录，以下是91-100 订阅

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Positioning accuracy of primary mirror actuators for large aperture space based optical instruments

Positioning accuracy of primary mirror actuators for large a...

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conference on current developments in Lens design and optical Systems engineering

作者： Hatheway, AE Alson E Hatheway Inc Pasadena CA 91101 USA

ISBN: (纸本)0819437387

This paper describes the Rubicon(tm) actuator, discusses its test data and derives from the data the actuator's accuracy function based upon the observed accuracy of long and short stroke motion commands. The accuracy is described in terms of the rms positioning error (in nanometers) for moves of a given size, regardless of position in the stroke.

关键词： actuator nanometer space instruments accuracy move error

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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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Bi-centenary of successes of Fourier theorem: Its power and limitations in optical system designs

Bi-centenary of successes of Fourier theorem: Its power and ...

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conference on current developments in Lens design and optical engineering VIII

作者： Roychoudhuri, Chandrasekhar U Connecticut & Femto Macro Continuum Storrs Dept Phys Photon Lab Storrs CT USA

ISBN: (纸本)9780819468154

We celebrate the two hundred years of successful use of the Fourier theorem in optics. However, there is a great enigma associated with the Fourier transform integral. It is one of the most pervasively productive and useful tool of physics and optics because its foundation is based on the superposition of harmonic functions and yet we have never declared it as a principle of physics for valid reasons. And, yet there are a good number of situations where we pretend it to be equivalent to the superposition principle of physics, creating epistemological problems of enormous magnitude. The purpose of the paper is to elucidate the problems while underscoring the successes and the elegance of the Fourier theorem, which are not explicitly discussed in the literature. We will make our point by taking six major engineering fields of optics and show in each case why it works and under what restricted conditions by bringing in the relevant physics principles. The fields are (i) optical signal processing, (ii) Fourier transform spectrometry, (iii) classical spectrometry of pulsed light, (iv) coherence theory, (v) laser mode locking and (vi) pulse broadening. We underscore that mathematical Fourier frequencies, not being physical frequencies, cannot generate real physical effects on our detectors. Appreciation of this fundamental issue will open up ways to be innovative in many new optical instrument designs. We underscore the importance of always validating our design platforms based on valid physics principles (actual processes undergoing in nature) captured by an appropriate hypothesis based on diverse observations. This paper is a comprehensive view of the power and limitations of Fourier Transform by summarizing a series of SPIE conference papers presented during 2003-2007.

关键词： Fourier transforms Spectroscopy Superposition Sensors Transform theory Physics Diffraction Time-frequency analysis Visibility

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A METHOD OF INVESTIGATIONS OF THE optical-PROPERTIES OF ANISOTROPIC MATERIALS USING MODULATION OF THE LIGHT POLARIZATION

A METHOD OF INVESTIGATIONS OF THE OPTICAL-PROPERTIES OF ANIS...

引用

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

作者： GUMIENNY, Z MISIEWICZ, J Institute of Physics Technical University of Wroclaw Wybrzożo Wyspiańskiego 27 Wrocław 60-370 Poland

A method of investigation of the optical properties of anisotropic materials using modulation of tho light polarization is presented. Measuring set-up was constructed and used to examine tho optical properties of inte... 详细信息

ISBN: (纸本)0819406554

关键词： optical properties

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An easy way to relate optical element motion to system pointing stability - art. no. 62880I

An easy way to relate optical element motion to system point...

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conference on current developments in Lens design and optical engineering VII

作者： Burge, J. H. Univ Arizona Coll Opt Sci Tucson AZ 85721 USA

ISBN: (纸本)0819463671

The optomechanical engineering for mounting lenses and mirrors in imaging systems is frequently driven by the pointing or jitter requirements for the system. A simple set of rules was developed that allow the engineer to quickly determine the coupling between motion of an optical element and a change in the system line of sight. Examples are shown for cases of lenses, mirrors, and optical subsystems. The derivation of the stationary point for rotation is also provided. Small rotation of the system about this point does not cause image motion.

关键词： optical alignment optomechanics pointing stability geometrical optics

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optical design of the Hobby-Eberly Telescope Four Mirror Spherical Aberration Corrector

Optical design of the Hobby-Eberly Telescope Four Mirror Sph...

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

作者： Jungquist, RK Eastman Kodak Co Commercial & Govt Syst Div Rochester NY 14650 USA

ISBN: (纸本)0819432652

The Hobby-Eberly Telescope uses a ii-meter diameter F/1.45 segmented spherical primary mirror. A spherical mirror of this size generates large amounts of spherical aberration. To be used successfully in a tilted optical Arecibo type telescope, the spherical aberration needs to be corrected. This means that tracking of astronomical targets is achieved through moving a tracker optical package which imposes somewhat severe packaging constraints. Given these packaging constraints, novel methods must be employed to correct the aberrations with the Spherical Aberration Corrector contained in the moving hacker optical package. The paper reviews the pertinent requirements, constraints and the resultant design of the Hobby-Eberly Telescope Four Mirror Spherical Aberration Corrector.

关键词： telescope design four mirror spherical aberration

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Development of methods for accurate modeling of optical equipment for three-dimensional printing 17

Development of methods for accurate modeling of optical equi...

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conference on current developments in Lens design and optical engineering XVII

作者： Saitgalina, A. K. Tolstoba, N. D. Mitiushkin, A., V ITMO Univ Dept Appl & Comp Opt Kronverksky Ave 49 St Petersburg 197101 Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The task of this research project is to define the extent of applicability of such 3D self-manufacture approach to the production of optical fastenings. The resulting lack of equipment, to be used for demonstration of simple experiments, which would be both competitive in performance and cheap to produce, led to the decision to research opportunities for self-manufacturing.

关键词： Three-dimensional printing Student Research Laboratory for optical engineering optical equipment printing capabilities 3D printers Accuracy optical instruments

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optical design, SIMULATION AND TESTING OF AN ADDRESSABLE 64X64 LIQUID-CRYSTAL PHASE PLATE

OPTICAL DESIGN, SIMULATION AND TESTING OF AN ADDRESSABLE 64X...

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conference on current developments in optical design and optical engineering III

作者： PURVIS, A BAILEY, NJ LOVE, GD MAJOR, JV UNIV DURHAM SCH ENGN & COMP SCIDURHAM DH1 3LEENGLAND

ISBN: (纸本)081941249X

The correction of phase aberrations in optical systems using an adaptive liquid crystal phase screen having 64 X 64 pixels is considered. These adaptive components have advantages over deformable mirror systems in that liquid crystal technology is relatively inexpensive and large pixelation densities can be achieved. In particular we address the application of these devices to astronomical adaptive optics. A simulator of the phase correction plate at work using time changing distorted wave fronts is described. Preliminary measurements of the optical flatness and response times of the prototype device are discussed.

关键词： Liquid crystals Adaptive optics optical simulations optical design Prototyping Wavefronts Astronomical adaptive optics Atmospheric modeling Device simulation Switches

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Precise algebraic method to solve the noncemented two-lens objective free from the aperture aberrations

Precise algebraic method to solve the noncemented two-lens o...

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

作者： Kryszczynski, T Inst Appl Opt Det Geometr Opt PL-03805 Warsaw Poland

ISBN: (纸本)0819432652

An original method to enable the exact solution for the noncemented two-lens objective by means of any number of simultaneous non-linear equations is described. The method is limited to spherical surfaces without decentrations. Separations and refractive indices of glasses are fixed. Ail curvatures of surfaces are indirectly determined in the final stage. The typical meridional aperture aberrations deal with aplanatic and achromatic conditions. Essence of the method relies on formulation functions which contain trigonometric expressions and are nested up to certain depth. The method uses the advanced professional mathematical software which is indispensable for serving the non-linear system of equations. Numerical examples confirm the helpfulness of the method.

关键词： algebraic methods of the optical design use of computer algebra to the optical design

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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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