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

共 444 条记录，以下是121-130 订阅

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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 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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Composition variants for mirror high-aperture lens with compact design 17

Composition variants for mirror high-aperture lens with comp...

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conference on current developments in lens design and optical engineering xvii

作者： Ezhova, Kseniia Zverev, Victor Chuhlamov, Anton Burtseva, Anastasiia ITMO Univ 49 Kronverkskiy Prospect St Petersburg 197101 Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The theoretical basis for the mirror high-aperture optical system synthesis, based on the properties of the reflecting surface accepted as the base having a shape of a paraboloid of rotation are considered in the work design parameters and residual aberrations tables of the few design solutions for considered optical systems are presented. From the analysis of aberration correction of the image formed by the considered optical system, it follows that the angular value image space is limited, primarily, the image surface curvature. To compensate for curvature of the image surface can be applied Smith lens. The additional condition that determines a high aperture ratio of the optical system of the considered lens as a whole was introduced, but it complicates the process of correcting the aberrations of a wide beam of rays. It is shown that the use of afocal Mersenne system with known anaberration properties, allows you to build a series of compact and SLR mirror-lens systems with aplanatic, anastigmatic and plananastigmatic aberration correction formed the image, at the same time the length of the system is about four times smaller than the diameter of its entrance pupil. Importantly, when applying the lens for using in a long wavelength range emission, the requirements for aberration correction image formed by the lens are reduced, and accordingly, manufacturability are increases.

关键词： the reflecting surface afocal system aplanatic correction of aberrations the lens compensator

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Enhancement of light luminance film applied to the transparent display devices 17

Enhancement of light luminance film applied to the transpare...

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conference on current developments in lens design and optical engineering xvii

作者： Chiu, Chuang-Hung Chen, Yueh-Hao Chien, Wei-Cheng Chien, Chao-Heng Chunghwa Picture Tubes LTD Taiwan Taoyuan Taiwan Tatung Univ Taipei Dept Mech Engn Taipei Taiwan

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

Recently, the display device was developed to apply to the transparency display device(TDD), but the TDD was no brightness. The purpose of this paper was introduced a double layer optical film to improve luminance of the TDD. The film was doped micro metal oxide particles to increase the effect of scattering and refraction, and the micro structure was fabricated between the top and bottom film to enhance the light into the TDD. This research provided a transparent double layer optical film. The transparency of the film was achieved to 70 %, and the brightness efficiency up to 60 %.

关键词： Transparent display devices optical film Luminance Micro-particles

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Accuracy and sensitivity analysis of the conical null-screen based corneal topographer 17

Accuracy and sensitivity analysis of the conical null-screen...

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conference on current developments in lens design and optical engineering xvii

作者： Cossio-Guerrero, Cesar Campos-Garcia, Manuel Univ Nacl Autonoma Mexico Ctr Ciencias Aplicadas & Desarrollo Tecnol Mexico Apdo Postal 70-186 Mexico City 04510 DF Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

In every optical testing method, the time taken to process data, the precision of the results and the sensitivity are among the most relevant aspects to be taken into account when the viability of its implementation is been under consideration. An accuracy and sensitivity analysis of a topographer based on a conical null-screen with a semi-radial distribution of targets is presented. On the other hand, we proposed a custom evaluation algorithm in order to reduce the time in the calculation of the normal to the corneal surface. Finally, we perform some corneal topographical measurements.

关键词： Null-Screen optical Metrology Corneal Topography

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Achrotech: achromat cost versus performance for conventional, diffractive and GRIN components 17

Achrotech: achromat cost versus performance for conventional...

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conference on current developments in lens design and optical engineering xvii

作者： Morris, Jeffrey Wolf, Greg Vandendriessche, Stefaan Sparrold, Scott Edmund Opt 6464 E Grant Rd Tucson AZ 85711 USA Edmund Opt 101 East Gloucester Pike Barrington NJ 08007 USA

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

An achromatic component shares a common focus at two wavelengths and is a commonly used device in optical assemblies. This work explores the cost versus performance tradeoff for several types of achromatic lenses: conventional doublets with homogenous glass elements, hybrid doublets with a diffractive surface, axial GRadient INdex (GRIN) lenses (where the index of refraction changes along the length of the lens), and radial GRIN lenses (where the index of refraction changes depending on radial position). First order achromatic principles will be reviewed and applied to each system as a starting point and refined through the use of ray trace software. optical performance will be assessed in terms of focusing efficiency and imaging. Cost will then be evaluated by accounting for current manufacturing costs and retail price through several distributors.

关键词： achromat GRIN lens diffractive lens axial color longitudinal color spherochromatism lens design

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Retina projection using curved lens arrays 17

Retina projection using curved lens arrays

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conference on current developments in lens design and optical engineering xvii

作者： Yen, Hao-Ren Su, Guo-Dung J. Natl Taiwan Univ Grad Inst Photon & Optoelect 1 Roosevelt RdSect 4 Taipei Taiwan

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

In this paper, we propose a multi-channel imaging system which combines the principles of an insect's compound eye and optical cluster eye. The system consists of two curved structure lens arrays with different pitches. Both of them have the same curvature and the radiuses of the lenses in the arrays are optimized to focus rays on the retina. The optical axes of different channels are tilted to each other in order to reduce the optical system volume and transmit a wide field of view. Each channel of an array of multiple optical system transfers only a part of the field of view. Each partial image passes through each channel and stitches together on the retina to reconstruct a complete image. In order to simulate the image stitching, we also build an eye model. The thickness from the panel to the last surface of lens group is less than 25mm. The panel size is designed to be 4 inch which is the scale of eyeglass. The system can provide a large field of view about 150 degrees which is much wider than the commercial products. By using the 3D printer, we can make a model of lens array to achieve our design.

关键词： head-mounted display lens arrays

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Characterization of a tunable liquid-filled lens with minimum spherical aberration 17

Characterization of a tunable liquid-filled lens with minimu...

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conference on current developments in lens design and optical engineering xvii

作者： Diaz-Gonzalez, G. Santiago-Alvarado, A. Munoz-Lopez, J. Juarez-Salazar, R. Cruz-Felix, A. S. Jimenez-Barriga, N. Univ Tecnol Mixteca Carretera Acatlima Km 2-5 Mexico City 69000 DF Mexico Inst Nacl Astrofis Optic Elect Luis Enrique Erro 1 Puebla 72840 Mexico Inst Politecn Nacl CONACYT CITEDI Ave Inst Politecn Nacl 1310 Tijuana 22435 BC Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

Tunable lenses have become very popular elements due their capacity of change their focal length by only modifying their shape. This characteristic is very useful in different applications in the field of optics. The development of tunable lenses consists on several phases: first, to find a suitable material, second, to obtain an optimal analysis and design, and third, to find the way to change the lens shape and characterization. In this work we present the characterization of a tunable lens, formed by spherical profiled elastic membranes and a liquid medium between them. The proposed liquid-filled tunable has a design such that the spherical aberration is the least to different focus. The development of an optomechanical system to change the lens shape is presented.

关键词： Tunable lens liquid filled lens opto-mechanical design

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Focusing regions evolution under linear transformations in the boundary condition 17

Focusing regions evolution under linear transformations in t...

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conference on current developments in lens design and optical engineering xvii

作者： Garcia-Guzman, A. De los Santos-Garcia, S. I. Torres, M. A. Munoz, J. Martinez-Niconoff, G. Inst Nacl Astrofis Opt & Elect INAOE Dept Opt Postal 51 & 216 Puebla Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

The properties of optical surfaces generated by diffraction are studied analyzing the changes in the curvature function of the boundary condition. The study leads to establish a classification for the optical fields as elliptical, hyperbolical or parabolic. The elliptical regions are separated from hyperbolic regions by a region of parabolic type, which corresponds to optical focusing regions. The main result of the analysis leads us to describe and to control bifurcations and vortices effects allowing to geometrize and to control the topological properties of the optical field. For this feature is important to control the geometry of the parabolic region, obtained by controlling the curvature function in the boundary condition. The model is implemented experimentally applying a linear transformation in transmittances of zone plate type. The experimental results corroborate the theoretical predictions

关键词： Diffraction Zone plates Lead optical components Transmittance Fractal analysis optical design optical tweezers Particles Spectroscopy

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Caustic surface produced by a plane wavefront refracted through positive bi-conic lenses. 17

Caustic surface produced by a plane wavefront refracted thro...

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conference on current developments in lens design and optical engineering xvii

作者： Ponce-Hernandez, Osvaldo Avendano-Alejo, Maximino Roman-Hernandez, Edwin Moreno-Oliva, Ivan Univ Nacl Autonoma Mexico Ctr Ciencias Aplicadas & Desarrollo Tecnol Apdo Postal 70-186 Mexico City 04510 DF Mexico Univ Istmo Div Estudios Posgrado Campus Tehuantepec Cd Univ S-N Santo Domingo Tehuantepe 70760 Oaxaca Mexico

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

We study the formation of caustic surfaces produced by bi-conic lenses, considering a plane wavefront propagating parallel to the optical axis. We have already seen that the shape of caustic surfaces can represent the monochromatic aberrations that we call image errors, furthermore the shape of the caustic can be modified by changing the parameters of the lens in such a way that if we are able to vanish the caustic, the optical system produces an image without spherical aberration, alternatively caustic surfaces having a large area could be applied to design non-imaging optical systems, such as diffusers of light. The shape of the caustic surface is a function of the indices of refraction involved in the process of refraction, and all the parameters of the bi-conic lens. We provide an analytic equation for the caustic surface in a meridional plane and some examples are presented.

关键词： Ray tracing lenses Protactinium Refraction Wavefronts Geometrical optics Interfaces Monochromatic aberrations optical design Cadmium

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