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

共 446 条记录，以下是61-70 订阅

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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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An optically passive athermal infrared optical system

An optically passive athermal infrared optical system

引用

conference on current developments in lens design and optical engineering IX

作者： Li, Hua Shen, Mangzuo Chinese Acad Sci Inst Opt & Elect Chengdu 610041 Sichuan Prov Peoples R China

ISBN: (纸本)9780819472809

An optically passive athermal infrared optical system working in the 8 - 12 micron long wavelength infrared band was designed by using a special infrared optical material AMTIR (amorphous material transmitting infrared radiation). The design principle, design results are described in this paper. In addition, the optical system was incorporated with an infrared focal plane array forming an infrared camera. The thermal test of imaging quality of this camera is also presented

关键词： infrared optical system optical design athermal optical system

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Fundamentals of concentric lens systems synthesis 17

Fundamentals of concentric lens systems synthesis

引用

conference on current developments in lens design and optical engineering xvII

作者： Ezhova, Kseniia Zverev, Victor Tochilina, Tatiana Tymoshchuk, Irina ITMO Univ 49 Kronverkskiy Prospect St Petersburg 197101 Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

Introduction of coefficients defining the relationship of the radii of curvature of the surfaces of concentric optical systems, allowed the transformation of the obtained analytical relations in a system of two equations with two unknowns. It is shown that the existence of the solution of the system of equations determined by the optical constants of the selected lens material. The results of the analysis of the conditions of the chromatic aberration correction position and the sequence of obtaining of the system equations define the theoretical basis of the engineering method of parametric synthesis of concentric lens systems. Application of the developed method is illustrated by examples of calculation particular systems design build.

关键词： the system of concentric surfaces spherical aberration chromatic aberration of position the aperture diaphragm the primary aberrations

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optical design of athermalised dual field of view zoom lens in long wave infrared (8μm-12μm) spectral band using benefits of paraxial optics 17

Optical design of athermalised dual field of view zoom lens ...

引用

conference on current developments in lens design and optical engineering xvII

作者： Kucukcelebi, Doruk Roketsan TR-06780 Ankara Turkey

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

This paper presents a methodology for designing an athermalised dual field of view zoom lens in long wave infrared (8 mu m - 12 mu m) spectral band by using the benefits of paraxial optics. By using this design methodology the optical designer can develop many types of complex optical systems in a straightforward way. The key feature of this design methodology relies on utilization of paraxial optics for defining the initial positions of the optical elements. The optical design is based on moving a single lens for changing the optical system's FOV thereby reducing the number of moving parts and simplifying the assembly procedure of the system. The optical design begins with optimization process using paraxial optics. Then the optical design using paraxial optics is used as a template for designing the final optical system by lens material selection for compensating the shift in system's focus due to thermal effects and lens thickness tuning.

关键词： Dual FOV optical design paraxial optics athermalization Long Wave Infrared (LWIR)

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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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Studies of the manufacturability of the HOE included in objective of BD/DVD combined optical pick-up head according to the objective lens glass type - art. no. 66670O

Studies of the manufacturability of the HOE included in obje...

引用

conference on current developments in lens design and optical engineering VIII

作者： Lisitsyna, N. V. Bauman Moscow State Tech Univ Moscow 105005 Russia

ISBN: (纸本)9780819468154

The new combined optical pick-up head for recording and playback of information on DVD and BD format discs was developed. The same objective is used for both channels. It consists of the objective lens and Holographic optical Element. In this work we present the main results of the studies of the possibility to manufacture the HOE included in objective of BD/DVD combined optical pick-up head in the dependence on objective lens glass type.

关键词： optical data storage diffractive optics

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design of the hybrid refraction-diffraction lens with wavelength 10.6 mu m 6

Design of the hybrid refraction-diffraction lens with wavele...

引用

current developments in optical design and engineering VI conference

作者： Chen, YS Li, DH Institute of Physics Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)0819422517

In this paper, combining refractive and diffractive effects, a new kind of infrared lenses with wavelength 10.6 mu m was designed and produced for CO2 laser material processing. This refractive-diffractive lens (RDL) converts a CO2 laser beam into the rectangular shape with light intensity distribution in the concave shape at x-direction. A method which employs input aperture division and geometrical transformation technique for obtaining a better initial phase distribution of the iteration is presented. The experimental results show that the desired shape of the output light beam was obtained with a high efficiency in energy utilization.

关键词： binary optics diffractive optics infrared lens design

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design and analysis of a diffractive astigmatic lens for DVD pickup

Design and analysis of a diffractive astigmatic lens for DVD...

引用

conference on current developments in lens design and optical engineering VIII

作者： Chen, Wen-Jie Chen, Cheng-Huan Univ Minnesota Dept Elect & Comp Engn St Paul MN USA Natl Tsing Hua Univ Dept Power Mech Engn Hsinchu Taiwan

ISBN: (纸本)9780819468154

A refractive astigmatic lens is employed to generate a focus error signal (FES) for servo control in general optical pickup. In this paper, a diffractive optical element (DOE) is designed to implement optical functions of astigmatic focusing for a MEMS-based miniature optical pickup at 650nm wavelength. We present a diffractive astigmatic lens with its internal zones and external zones quantized into four, two phase levels, respectively based on fabrication consideration. The optical simulation based on scalar diffraction theory shows the efficiency of this quantized lens for astigmatic focusing and a comparison of the FES in the optical pickup system has been plotted.

关键词： DVD pickup astigmatic lens diffractive optical element focus error signal

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An Optimal lens arrangement in high numerical aperture objectives 22

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

引用

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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Proof-of-concept demonstration of a miniaturized multi-resolution refocusing imaging system using an electrically tunable lens 15

Proof-of-concept demonstration of a miniaturized multi-resol...

引用

conference on current developments in lens design and optical engineering xv

作者： Smeesters, L. Belay, G. Y. Ottevaere, H. Meuret, Y. Vervaeke, M. Van Erps, J. Thienpont, H. Vrije Univ Brussel Fac Engn Dept Appl Phys & Photon TONA Brussels Photon Team B PHOT B-1050 Brussels Belgium

ISBN: (纸本)9781628412192

Refocusing multi-channel imaging systems are nowadays commercially available only in bulky and expensive designs. Compact wafer-level multi-channel imaging systems have until now only been published without refocusing mechanisms, since classical refocusing concepts could not be integrated in a miniaturized configuration. This lack of refocusing capabilities limits the depth-of-field of these imaging designs and therefore their application in practical systems. We designed and characterized a wafer-level two-channel multi-resolution refocusing imaging system, based on an electrically tunable liquid lens and a design that can be realized with wafer-level mass-manufacturing techniques. One wide field-of-view channel (2x40 degrees) gives a general image of the surroundings with a lower angular resolution (0.078 degrees), whereas the high angular resolution channel (0.0098 degrees) provides a detailed image of a small region of interest with a much narrower field-of-view (2x7.57 degrees). The latter high resolution imaging channel contains the tunable lens and therefore the refocusing capability. The performances of this high resolution imaging channel were experimentally characterized in a proof-of-concept demonstrator. The experimental and simulated depth-of-field and resolving power correspond well. Moreover, we are able to obtain a depth-of-field from 0.25m until infinity, which is a significant improvement of the current state-of-the-art static multi-channel imaging systems, which show a depth-of-field from 9m until infinity. Both the high resolution and wide field-of-view imaging channels show a diffraction-limited image quality. The designed wafer-level two-channel imaging system can form the basis of an advanced three-dimensional stacked image sensor, where different image processing algorithms can be simultaneously applied to the different images on the image sensor.

关键词： lens system design adaptive optics tunable lens refocusing imaging systems modulation transfer function miniature camera optics proof-of-concept demonstration

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