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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...

引用

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

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

引用

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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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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designing Aspherics with discrete representation

Designing Aspherics with discrete representation

引用

conference on current developments in Lens design and optical engineering III

作者： Wei, N Gong, MI Yan, P Zhang, HT Tsing Hua Univ Dept Precis Instrument Digital Photon Lab Beijing 100084 Peoples R China

ISBN: (纸本)0819445347

We have developed a new method other than traditional technique based on ray tracing and optimization algorithm to design arbitrary aspherics. Analytic definition of the aspheric surfaces is done away with and numerical solution of nonlinear difference equations called Aspheric Intrinsic Equations (AIE) is implemented instead. Simulation results compared with traditional optical design software are presented, which prove that this new method is more effective and reliable in designing aspheric surfaces.

关键词： aspherics discrete representation optical disk lens design

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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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optical design of triple-mode seeker 11

Optical design of triple-mode seeker

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conference on current developments in Lens design and optical engineering XXI

作者： Sakarya, Dogan Ugur Kucukcelebi, Doruk Tact Missile Syst Grp TR-06780 Roketsan Elmadag Ankara Turkey

ISBN: (数字)9781510637719

ISBN: (纸本)9781510637719

In missile applications, new counter measure methods are getting more complex. To discriminate and detect counter measure and to understand target signature from scene is getting harder. Because of all that concerns, using triple-mode seeker for a system solution is a good solution for system total performance. By this way, tri-different wavelength could be used for same system and same scene. In this study, triple mode system's optical designs have been made for mid-wave infra-red imaging, long-wave infra-red imaging and short-wave infrared imaging. optical designs performances have been illustrated in simulation results. Finally, conceptual design of triple mode seeker will be summarized.

关键词： Triple mode seeker mid wave infrared long wave infrared short wave infrared optical design

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Replication optics for a holographic 3D display system

Replication optics for a holographic 3D display system

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conference on current developments in Lens design and optical engineering IV

作者： Wood, A Smith, M Stanley, M Thales Opt Ltd St Asaph LL17 0LL Denbigh Wales

ISBN: (纸本)0819450464

The display of 3D images containing all the depth cues required by the human vision system can be achieved using a reconfigurable Computer Generated Hologram (CGH) with high pixel count. A technique which has been developed to produce CGH's with the required number of pixels, and at video refresh rates, is known as Active Tiling((TM)) (AT). At the heart of an AT system is a set of replication optics which produces multiple images of a Spatial Light Modulator (SLM) onto the CGH. The design of two alternative optical systems for generating a 5x5 tiled array of de-magnified images of a single object is discussed. Results are presented from a 4-channel AT system which has recently been built and demonstrated.

关键词： optical design computer generated holograms 3D display

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Variable gratings for optical switching: rigorous electromagnetic simulation and design

Variable gratings for optical switching: rigorous electromag...

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conference on current developments in optical design and engineering viI

作者： Gani, D Auslender, M Hava, S Ben Gurion Univ Negev Dept Elect & Comp Engn IL-84105 Beer Sheva Israel

ISBN: (纸本)0819428841

This paper is devoted to the analysis of the optical performance of movable-beam grating structures with both lateral and vertical displacement of the beams. We show that in the vector- diffraction domain one can design high-efficiency switches (e.g. between beam transmitter and beamsplitter mode) and modulators for polarized radiation. The devices exhibit a good tolerance to fabrication and mounting errors and a functional flexibility. In addition, by simulating the optical performance of polysilicon micro-electro-mechanical grating structures at a visible wavelength, reported in the literature, we demonstrate that our tools for rigorous electromagnetic simulation of grating structures work well in the scalar-diffraction domain.

关键词： variable grating devices silicon diffraction rigorous electromagnetics

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current status and future direction of sensors in earth observing satellites

Current status and future direction of sensors in earth obse...

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conference on current developments in Lens design and optical engineering IV

作者： Zhou, GQ Wang, C Old Dominion Univ Norfolk VA 23529 USA

ISBN: (纸本)0819450464

With the increasing sensor development, smart sensor, advanced sensor, and intelligent sensor, especially, distributed sensors, sensor network and sensor integration are being taken into account for application of our environmental monitoring and Earth source investigation. This paper investigates the development of sensors in Earth observing (EO) satellites, analyzes the current high-resolution EO satellites and presents the direction of new imaging systems in future Earth observing satellite. The purpose of this paper is to contribute to those who are interested in knowing and keeping track of the details of the imaging system of earth observing satellites.

关键词： sensor network earth observing satellite future direction advanced sensor smart sensor

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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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