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

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design and fabrication of microlens by microfluidic deposition method

Design and fabrication of microlens by microfluidic depositi...

引用

Conference on current developments in lens design and optical engineering V

作者： Chen, CT Chiu, CL Horng, JB Ind Technol Res Inst Optoelect & Syst Labs Hsinchu 741 Taiwan

ISBN: (纸本)0819454613

The paper presents a new processing method for design and fabrication of microlens by microfluidic deposition, in which the lenses can be formed on the media with high precise location in the fabrication process. First we may apply physical vaporization deposition (PVD) or spin coating to fabricate a thin film;secondly, the hydrophilic pattern specified by the mask of lenses can be created by photolithography, where the special lens media is made herein. Finally, the liquid solution of lens material is deposited onto the predetermined location of the lens media by the drop-on-demand fluidic actuator;thus, the microlenses are consequently formed after the complete evaporation of solvent in the solution.

关键词： microlens fabrication microfluidic deposition ink-jet

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USE OF LIQUID-CRYSTAL SWITCH IN SINGLE-lens-REFLEX CAMERA 4

USE OF LIQUID-CRYSTAL SWITCH IN SINGLE-LENS-REFLEX CAMERA

引用

Conference on current developments in optical design and optical engineering IV

作者： JUTAMULIA, S NIWA, H TOYODA, S KOWA CO LTD SAN JOSECA 95112

We propose the use of a liquid-crystal switch consisting of a liquid-crystal cell and a polarizing beam-splitter in a single-lens-reflex camera to replace a mechanical hinged-mirror. Since there is no vibration and no... 详细信息

ISBN: (纸本)0819415871

关键词： Liquid crystals

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A compact and cost effective design for cell phone zoom lens

A compact and cost effective design for cell phone zoom lens

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Conference on current developments in lens design and optical engineering viiI

作者： Chang, Chir-Weei Wu, Ching-Chin Ind Technol Res Inst Elect & Optoelect Res Labs 195Sec 4Chung Hsing Rd Hsinchu 310 Taiwan EFUN Technol Co Ltd Tainan 70955 Taiwan

ISBN: (纸本)9780819468154

A compact zoom lens design for cell phone is presented. A three groups lens system with five lens element is designed for cell phone camera with 3M pixels and 2.5 similar to 3X optical zoom. The first lens is a negative lens with a concave surface facing the object so that, when used for a long focal length, the rear principle plane is moved forwards to shorten the total length of the lens. A positive lens group composed of three lens elements is arranged at the second lens group. By control the optical power of the second lens group, the distortion can be reduced and also shortens the moving distance of the second lens group while zooming. The fifth lens in the third lens group is a positive lens to control the incident angle entering the photosensitive element. It is used for focusing when the object distance has changed.

关键词： zoom lens cell phone total track length

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Finding starting points analytically for optical system optimization

Finding starting points analytically for optical system opti...

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Conference on current developments in lens design and optical engineering XIII

作者： Bociort, F. van Grol, P. Delft Univ Technol Opt Res Grp NL-2628 CJ Delft Netherlands

ISBN: (纸本)9780819492036

Understanding the structure of the design space in optical system optimization is difficult, because common human intuition fails when it encounters the challenge of high dimensionality, resulting from the many optimization parameters of lens systems. However, a deep mathematical idea, that critical points structure the properties of the space around them, is fruitful in lens design as well. Here we discuss simple systems, triplets with curvatures as variables, for which the design space is still simple enough to be studied in detail, but complex enough to be non-trivial. A one-to-one correspondence between the possible design shapes and the critical points resulting from a simplified model based on third-order spherical aberration within the framework of thin-lens theory could lead in the future to a new way to determine good starting points for subsequent local optimization.

关键词： saddle point critical point global optimization optical system design

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Recent progress on raytracing through metasurfaces 25

Recent progress on raytracing through metasurfaces

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Conference on current developments in lens design and optical engineering XXV

作者： Borne, Jeck Bouillon, Christopher Cleroux-Cuillerier, Alexandre Thibault, Simon Univ Laval COPL 2375 Rue Terrasse Quebec City PQ Canada UQAR Inst Sci Mer 310 Allee Ursulines Rimouski PQ Canada

ISBN: (纸本)9781510679221;9781510679238

Our study presents recent progress in modelling and performing lens optical design with metasurfaces. We developed semi-analytical models that recover the output phase, polarization, dispersion and group delay of various nanostructures. This enables the mixing of different nanostructures to obtain a target dispersion profile an interesting application of the model. These models can readily be implemented within optical design software such as Zemax and use the built-in optimization of optical design processes while avoiding time-consuming electrodynamics computation. We also introduce the metasurfaces to the analytical lens design framework. This enables us to analytically compute the phase profile of freeform metasurface doublet concerning particular ray conditions such as the Abbe Sine condition as we presented here.

关键词： Metasurface Metasurface modelling optical design Analytical design

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NEW design METHOD FOR ATHERMALIZED optical-SYSTEMS

NEW DESIGN METHOD FOR ATHERMALIZED OPTICAL-SYSTEMS

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CONF ON current developments IN optical design AND optical engineering 2

作者： TAMAGAWA, Y WAKABAYASHI, S TAJIME, T Mitsubishi Electric Corp. (Japan)

ISBN: (纸本)0819409251

This paper describes a new design method for athermalized optical systems. It can be accomplished by combining optical materials and by selecting suitable lens powers. However, there are difficulties in determining material and power of each lens, because achromatism is simultaneously required. To determine the condition of eliminate thermal focus shift and longitudinal chromatic aberration easily by simple drawing, an athermal chart is proposed which is constructed by plotting chromatic dispersive power and thermal dispersive power on a cartesian coordinate system.

关键词： Modulation transfer functions Zinc Colorimetry Germanium Chromatic aberrations Temperature metrology Visualization Gallium arsenide Refractive index Thermography

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RELUCTANT GLASS FORMERS AND THEIR APPLICATIONS IN lens design

RELUCTANT GLASS FORMERS AND THEIR APPLICATIONS IN LENS DESIG...

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

作者： JOHNSON, RB CHEN, F ETHRIDGE, EC Univ. of Alabama in Huntsville (United States) NASA/Marshall Space Flight Ctr. (United States)

ISBN: (纸本)0819406554

Recently, a group of glasses has been investigated that have high refractive index and low dispersion. These glasses are known as reluctant glass formers and lie in the "forbidden" region of the conventional glass map. Research is continuing to develop means and techniques to produce usable sizes and optical characteristics. Since these glasses have unusual optical properties, a study was performed to gain an understanding of the impact such glasses could have on optical design and to establish desired baseline optical properties as objectives for the material scientists. Several generic optical configurations were explored to determine if a meaningful improvement could be realized. Study results are presented and discussed to illustrate that a notable enhancement in optical performance is attainable.

关键词： Glasses lens design optical design Refractive index Information operations optical properties Crown glass Refraction Crystals Objectives

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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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lens BLOCKING METHOD FOR OPTICAM

LENS BLOCKING METHOD FOR OPTICAM

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CONF ON current developments IN optical design AND optical engineering 2

作者： NOVAK, R MARRO, M TIPPS, JD CZAJKOWSKI, W DEMARCO, J SALAMON, PA MATCHETT, D CAPUTO, F LEBLANC, G Monroe Community College (United States) Eastman Kodak Co. (United States) Loctite Corp. (United States)

ISBN: (纸本)0819409251

A uv-curing 'cold' blocking adhesive has been developed by Loctite Corporation for use with the Opticam SM. The adhesive is a significant advance in the lens blocking process, as it eliminates heat-induced blocking strain; the most significant problem encountered with current hot pitch blocking methods. The new cold blocking adhesive is complemented by a new Kennametal lens blocking adapter tool and chucking system. The tooling offers substantially improved lens adapter to machine alignment and transfer; at considerably lower cost. The lenses are deblocked in a heated water and detergent solution, eliminating the environmental concerns of the current method.

关键词： Adhesives Optics manufacturing Glasses Light sources optical alignment Precision optics Roads UV optics Computing systems optical fabrication

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GLOBAL OPTIMIZATION USING THE Y-YBAR DIAGRAM

GLOBAL OPTIMIZATION USING THE Y-YBAR DIAGRAM

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

作者： BROWN, DM Teledyne Brown Engineering (United States)

ISBN: (纸本)0819406554

Software is under development at Teledyne Brown engineering to represent a lens configuration as a y-ybar or Delano diagram. The program determines third-order Seidel and chromatic aberrations for each configuration. It performs a global search through all valid permutations of configuration space and determines, to within a step increment of the space, the configuration with smallest third-order aberrations. The program was developed to generate first-order optical layouts which promised to reach global minima during subsequent conventional optimization. Other operations allowed by the program are: add or delete surfaces, couple surfaces (for Mangin mirrors), shift the stop position, and display first-order properties and the optical layout (surface radii and thicknesses) for subsequent entry into a conventional lens-design program with automatic optimization. Algorithms for performing some of the key functions, not covered by previous authors, are discussed in this paper.

关键词： optical engineering optical design Mirrors Refraction Software development Vignetting Algorithm development Chromatic aberrations lens design Bessel functions

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