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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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Chromatic error correction of diffractive optical elements at minimum etch depths 15

Chromatic error correction of diffractive optical elements a...

引用

Conference on current developments in lens design and optical engineering XV

作者： Barth, Jochen Guehne, Tobias Airbus Def & Space Landshuter Str 26 D-85716 Unterschleissheim Germany Airbus Def & Space D-81663 Munich Germany

ISBN: (纸本)9781628412192

The integration of diffractive optical elements (DOE) into an optical design opens up new possibilities for applications in sensing and illumination. If the resulting optics is used in a larger spectral range we must correct not only the chromatic error of the conventional, refractive, part of the design but also of the DOE. We present a simple but effective strategy to select substrates which allow the minimum etch depths for the DOEs. The selection depends on both the refractive index and the dispersion.

关键词： Diffractive optics Aberration compensation

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optical design of a single freeform lens for both counter-beam and pro-beam in LED tunnel lighting 25

Optical design of a single freeform lens for both counter-be...

引用

Conference on current developments in lens design and optical engineering XXV

作者： Syu, Jhih-Ling Lee, Tsung-Xian Tsai, Cheng-Hung Ma, Shih-Hsin Feng Chia Univ Dept Photon Taichung Taiwan Natl Taiwan Univ Sci & Technol Grad Inst Color & Illuminat Technol Daan 106 Taiwan

ISBN: (纸本)9781510679221;9781510679238

A luminaire designed for tunnel lighting is proposed, featuring the ability to adjust the ratio between counter-beam and pro-beam lighting based on different contexts. This allows the luminaire to achieve the optimal lighting mode for the conditions within the tunnel at that time. When both side LEDs are activated, it operates in symmetric lighting mode. When a single-side LED is activated, it switches to either counter-beam or pro-beam lighting mode. The advantage of this luminaire lies in the use of a single freeform secondary lens and LEDs, making installation simpler. It ensures driver safety and is more energy-efficient than traditional tunnel lights.

关键词： optical design Tunnel Lighting Freeform Secondary lens Microstructure

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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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Analysis of opto-mechanical performance of a tunable liquid lens

Analysis of opto-mechanical performance of a tunable liquid ...

引用

Conference on current developments in lens design and optical engineering XI - and Advances in Thin Film Coatings VI

作者： Santiago-Alvarado, A. Vazquez-Montiel, S. Gonzalez-Garcia, J. Munoz-Lopez, J. Campos Garcia, Manuel Univ Tecnol Mixteca Carre Acatlima Km 2-5 Huajupan De Leon Oaxaca Mexico Astron Inst Opt Elect Labs Puebla Mexico Univ Nacl Estadual Sao Paulo Mexico City DF Mexico

ISBN: (纸本)9780819482822

Recently in the micro-optical engineering area has been a grown in use of tunable liquid lenses because this lenses us allow versatility in the focusing range, also an easy handling and implementation. In the literature, many tunable lens models have been reported, but most of this work has been on describing the optical quality of the images, the opto-mechanical analysis is neglected. In this paper, an analysis of opto-mechanical of a tunable liquid lens is presented, for this;we show a finite element simulation of mechanical behavior and estimate how this influences in the optical performance of the lens. The liquid lens is composed of two elastic transparent membranes and of a cylindrical metallic mount.

关键词： Tunable liquid lens PDMS mechanical properties

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optical design of Low Glare Luminaire Applied for Tunnel Light 15

Optical Design of Low Glare Luminaire Applied for Tunnel Lig...

引用

Conference on current developments in lens design and optical engineering XV

作者： Tsai, M. S. Lee, X. H. Lo, Y. C. Sun, C. C. Natl Cent Univ Dept Opt & Photon Chungli 320 Taiwan

ISBN: (纸本)9781628412192

In this study, a low glare and high-efficient tunnel lighting design which consists of a cluster light-emitting diode and a free-form lens is presented. Most of the energy emitted from the proposed luminaire is transmitted onto the surface of the road in front of drivers, and the probability that the energy is emitted directly into drivers' eyes is low. Compared with traditional fluorescent lamps, the proposed luminaire, of which the optical utilization factor, optical efficiency, and uniformity are, respectively, 44%, 92.5%, and 0.72, performs favorably in traffic safety, energy saving, and glare reduction.

关键词： Light-emitting diodes Illumination design Nonimaging optics optical design and fabrication

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Rotating prisms scanning system to equip a NFOV camera lens

Rotating prisms scanning system to equip a NFOV camera lens

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

作者： Curatu, E Chevrette, P StGermain, D Natl Opt Inst St Foy PQ G1P 4N8 Canada

ISBN: (纸本)0819432652

This paper presents the results given by the nominal design and tolerance analysis of a narrow-field-of-view camera lens equipped with a rotating prism scanning system. The first aspects taken into consideration have been the compensation of the chromatic aberration, distortion reduction, and the correlation between depth-of-field and lens resolution. Then, a rigorous approach to determine the relationship between the field-of-regard direction and the prism orientations is discussed. Finally, the tolerance analysis results give the predictable pointing direction precision as function of the system tolerances.

关键词： rotating prisms Risley prisms scanning system

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Ultra-compact hourglass lens for integrated cameras 16

Ultra-compact hourglass lens for integrated cameras

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Conference on current developments in lens design and optical engineering XVI

作者： Rezaei, Mohsen Nia, Iman Hasani Bonakdar, Alireza Mohseni, Hooman Northwestern Univ Dept Elect Engn & Comp Sci Bioinspired Sensors & Optoelect Lab BISOL Evanston IL 60208 USA

ISBN: (纸本)9781628417449

An ultra-small telecentric lens with sub-millimeter thickness is proposed. This lens with 0.2 numerical aperture and high field of view is a good candidate to be used in multi-aperture super resolution imagers. Point spread function and the telecentricity of the lens is extracted numerically and measured experimentally. The ray-optics simulation results show nearly diffraction limited performance for the lens.

关键词： Cameras Imaging systems Point spread functions Silicon Image sensors lens design Infrared cameras Modulation transfer functions Super resolution Sensors

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design of lens hoods for the "Lira-B" space telescope 19

Design of lens hoods for the "Lira-B" space telescope

引用

19th Conference on current developments in lens design and optical engineering

作者： Muratov, Artem Olyunin, Vyacheslav Bacholdin, Alexey Voznesenskaya, Anna ITMO Univ 49 Kronverksky Av St Petersburg 197101 Russia

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

The space investigation project "Lira-B" is purposed to perform a high-precision multicolor photometric all-sky survey of objects from 3 to 16 m. This investigation concludes in multiple photometric measurements in ten spectral bands from 200 to 1000 nm. Such telescope systems should provide maximum light gathering and meet stray light requirements. The main goal of the given work is optical design of the telescope system with lens hoods protecting against the parasitic illumination. Analysis of impact of the lens hoods' surface structure and coatings on the image quality is performed and ways to reduce the stray light in the system. The modeling is carried out using Zemax OpticStudio software in the non-sequential mode.

关键词： Lira-B Zemax lens hood telescopic system

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optical design of liquid crystal lenses: Off-axis modelling

Optical design of liquid crystal lenses: Off-axis modelling

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current developments in lens design and optical engineering VI

作者： Kirby, A.K. Hands, P.J.W. Love, G.D. Durham University Dept. of Physics Durham DH1 3LE United Kingdom

We report on our work on producing liquid crystal switchable modal lenses and their use in a compound lens system in order to produce variable focus/zoom lenses. We describe work on producing a high power lens, and present theoretical work on off-axis phase modulation in a liquid crystal lens which is important in order to be able to carry out a complete optical design of a liquid crystal lens.

关键词： Liquid crystal displays

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Simulation of Multi-Channel Microlens Array for Image Stitching 19

Simulation of Multi-Channel Microlens Array for Image Stitch...

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19th Conference on current developments in lens design and optical engineering

作者： Chao, Chien Su, Guo-Dung Natl Taiwan Univ Grad Inst Photon & Optoelect 1 Roosevelt RdSect 4 Taipei Taiwan

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

In this study, we propose a new micro-optical system with 1.65 zoom ratio for image stitching. The new system with four layers is based on microlenses and liquid lens arrays. In order to realize the zoom function, we design the first and the fourth layers by the liquid lens and we also set up the second and the third layers as the fixed lens to tilt the optical axes. The length of the system is 6.4 mm, the image size 8.6 x 6.6 mm(2), the field of view (FOV) 50 degrees in wide mode and the field of view 28 degrees in tele mode. The MTF and distortion are used to demonstrate the zoom function, the stitching function and the stitching with zoom function, respectively. We use the ZEMAX ray-tracing software to demonstrate the simulation of image stitching in wide and tele modes.

关键词： Image system Micro-optics optical design Array Zoom system Liquid lens system

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