检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

598 篇 会议
7 篇 期刊文献

馆藏范围

605 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

571 篇 理学
- 562 篇 物理学
- 25 篇 数学
- 6 篇 化学
- 5 篇 地球物理学
- 3 篇 系统科学
- 2 篇 地质学
- 1 篇 天文学
- 1 篇 大气科学
- 1 篇 海洋科学
241 篇 工学
- 88 篇 光学工程
- 78 篇 仪器科学与技术
- 77 篇 电气工程
- 39 篇 材料科学与工程（可...
- 33 篇 计算机科学与技术...
- 28 篇 电子科学与技术（可...
- 24 篇 软件工程
- 19 篇 化学工程与技术
- 15 篇 信息与通信工程
- 11 篇 机械工程
- 11 篇 控制科学与工程
- 6 篇 航空宇航科学与技...
- 3 篇 力学（可授工学、理...
- 3 篇 冶金工程
- 3 篇 动力工程及工程热...
- 3 篇 建筑学
- 2 篇 土木工程
113 篇 医学
- 113 篇 临床医学
5 篇 管理学
- 5 篇 管理科学与工程(可...
- 2 篇 工商管理
1 篇 经济学
- 1 篇 应用经济学
1 篇 农学

主题

110 篇 optical design
61 篇 lens design
21 篇 optical engineer...
18 篇 optical systems
17 篇 lenses
14 篇 distortion
14 篇 monochromatic ab...
13 篇 glasses
13 篇 tolerancing
13 篇 mirrors
13 篇 refractive index
12 篇 optimization
11 篇 diffractive opti...
10 篇 spherical lenses
10 篇 optical instrume...
10 篇 telescopes
10 篇 chromatic aberra...
10 篇 geometrical opti...
10 篇 sensors
10 篇 image quality

机构

10 篇 univ arizona col...
5 篇 caltech jet prop...
4 篇 natl cent univ d...
4 篇 fraunhofer inst ...
4 篇 natl cent univ i...
4 篇 jet propulsion l...
3 篇 delft univ techn...
3 篇 natl appl res la...
3 篇 optical systems ...
3 篇 univ waterloo de...
3 篇 sandia natl labs...
3 篇 vrije univ bruss...
3 篇 natl cent univ t...
3 篇 costco opt water...
3 篇 rose hulman inst...
3 篇 natl taiwan univ...
3 篇 delft univ techn...
3 篇 univ alabama ctr...
3 篇 nasa goddard spa...
3 篇 univ waterloo de...

作者

20 篇 thibault simon
14 篇 sun ching-cherng
6 篇 thibault s
6 篇 thienpont hugo
6 篇 lee xuan-hao
6 篇 johnson r. barry
5 篇 santiago-alvarad...
5 篇 vazquez-montiel ...
5 篇 kucukcelebi doru...
5 篇 mahajan virendra...
5 篇 parent jocelyn
5 篇 santiago-alvarad...
5 篇 yu yeh-wei
5 篇 yang tsung-hsun
4 篇 gonzalez-garcia ...
4 篇 ma shih-hsin
4 篇 bociort florian
4 篇 van turnhout maa...
4 篇 mouroulis pantaz...
4 篇 dilworth donald ...

语言

605 篇 英文

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

共 605 条记录，以下是101-110 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

design of coded structured light based on square-shaped primitives 19

Design of coded structured light based on square-shaped prim...

引用

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

作者： Lau, Chi-Chung Sun, Ching-Chern Yang, Tsung-Hsun Yu, Yeh-Wei Chou, Si-Min Ind Technol Res Inst Green Energy & Environm Res Labs Bldg 24195Sec 4Chung Hsin Rd Hsinchu 31057 Taiwan Natl Cent Univ Dept Opt & Photon Kwoh Ting Opt & Photon Bldg300 Jhongda Rd Taoyuan 32001 Taiwan

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

This paper presents a new pattern design for encoding structured light for scanning 3D surface and the decoding process. The basic unit of the pattern is a code-block that contains one central label and eight square-shaped primitives that provide two functions: code-block indexing and point-positions for triangulating. The square-shaped primitive has one notch in a different position to represent 8 digit numbers, which are easily to convert label to number for indexing code-block. One primitive also contributes five point-positions, centroid and four extreme, for triangulating and estimating 3D information. The design of code-block has eight 8-bit numbers allowing a higher error-tolerant and providing better resolution in 3D reconstruction. Experiment shows that the proposed pattern is suitable for indoor mapping and large scene scanning.

关键词： coded structured light primitives 3-D data acquisition computer vision

来源：评论

学校读者我要写书评

暂无评论

Optimizing trefoil phase plates design for color wavefront coding 19

Optimizing trefoil phase plates design for color wavefront c...

引用

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

作者： Olvera-Angeles, Miguel Padilla-Vivanco, Alfonso Ortega, Karina Sasian, Jose Schwiegerling, Jim Arines, Justo Acosta, Eva Univ Politecn Tulancingo Hidalgo 43629 Mexico Univ Arizona Coll Opt Sci Tucson AZ 85721 USA Univ Santiago de Compostela Fac Fis Santiago De Compostela 15782 Spain

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

Wavefront coding refers to the use of a phase modulating element in conjunction with deconvolution to extend the depth of focus of an imaging system. The coding element is an asymmetrical phase plate shape, for most applications in the form of a trefoil or a cubic polynomial. Phase plates with trefoil shape generate not only the desired amount of trefoil aberration but also spherical aberration. It has been recently shown that a wavefront coding based optical system shows high tolerance to spherical aberration for monochromatic images;however, the depth of focus is considerably shortened for color images. In this work, we will show how to modify the shape of a phase plate in order to optimize its performance for color imaging. The design parameters of the phase plate are obtained by minimizing a merit function by means of genetic algorithms developed for this purpose. The evaluation of the optical characteristics of the phase plates for a feedback with the optimization algorithm is obtained by Zemax. Results will be illustrated by numerical simulations of color images.

关键词： Wavefront coding spherical aberration color imaging optimization genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

optical design and Predicted Performance of the WFIRST Phase-B Imaging Optics Assembly and Wide Field Instrument 19

Optical Design and Predicted Performance of the WFIRST Phase...

引用

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

作者： Pasquale, Bert A. Casey, Thomas Marx, Catherine Gao, Guangjun Armani, Nerses Content, David Hagopian, John Jurling, Alden Jackson, Clifton Liu, Alice Whipple, Art Murray, Jacob NASA Goddard Space Flight Ctr Greenbelt MD 20771 USA AS&D Inc 7000 Muirkirk Meadows Dr Beltsville MD 20705 USA Sigma Space Inc 4600 Forbes Blvd Lanham MD 20706 USA SGT Inc 7701 Greenbelt Rd Greenbelt MD 20770 USA ATA Aerosp Inc Greenbelt MD 20770 USA Conceptual Analyt Inc Glenn Dale MD 20769 USA Rose Hulman Inst Technol Terre Haute IN 47803 USA

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

Now in Phase-B, the architecture of the Wide-Field Infra-Red Survey Telescope (WFIRST) payload has matured since 2013 to accommodate various opto-mechanical constraints. Based on a 2.4-meter aperture Forward optical Assembly (FOA), the Imaging Optics Assembly (IOA) provides corrected optical fields to each on-board instrument. Using a Three Mirror Anastigmat (TMA) optical design, the Wide-Field Channel (WFC) provides similar to 1/3-square degree of instantaneous field coverage at 0.11 arcsecond pixel scale. The WFC as-built predictive analysis anticipates near diffraction-limited imaging over a focal plane of 300.8 million pixels, operating in seven panchromatic bands between 0.48 -2.0 mu m, or a 1-octive multi-spectral imaging mode from similar to 0.95-1.93 mu m. The IOA provides the Coronagraph Instrument (CGI) a collimated beam with very specific wavefront constraints. We present configuration changes since 2013 that improved interfaces, improved testability, and reduced technical risk. We provide an overview of our Integrated Modeling results, performed at an unprecedented level for a phase-A study, to illustrate performance margins with respect to static wavefront error, jitter, and thermal drift.

关键词： Space Instrumentation Astronomical Optics Imaging Systems Telescopes Dark Energy Spectroscopy Systems engineering Integrated Modeling

来源：评论

学校读者我要写书评

暂无评论

System matrix generation for 3D tomographic reconstructions using an optical design software 19

System matrix generation for 3D tomographic reconstructions ...

引用

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

作者： Rilling, Madison Bourrassaa, Francois Archambault, Louis Thibault, Simon Univ Laval Dept Phys Genie Phys & Opt Quebec City PQ Canada Univ Laval Ctr Hosp Univ CHU Quebec Ctr Rech Quebec City PQ Canada Ctr Opt Photon & Laser Quebec City PQ Canada

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

3D imaging of solid targets using plenoptic cameras has been extensively explored and optimized over the years. Unfortunately, these imaging techniques, typically making use of triangulation methods and contrast recognition for depth estimation, lose their validity when imaging translucent media. For these cases, tomographic reconstruction has been shown to be a promising avenue for recovering the 3D shape of a translucent volume. Apart from the tomographic reconstruction algorithm itself, the accuracy of a reconstructed solution depends on the set of measured projections and on the system matrix. A proper determination of the system matrix is key as its elements describe the weighted contribution of a voxel in object space to one in image space;however, computing the matrix elements can consist of an arduous task as it requires a priori knowledge of the imaging system and precise modeling of the physical properties of the acquisition process. In this work, we present how an optical design software can be used to generate such system matrices. Compared with approximation methods involving paraxial ray tracing, the proposed method offers the main advantage of real ray tracing, in which the computed weighted contributions intrinsically account for optical aberrations in the imaging system. Physical properties of light propagation within the translucent medium can also be taken into account when using non-sequential modes. Using a ray tracing software thus offers great flexibility in designing plenoptic imaging systems used with 3D tomographic reconstruction techniques.

关键词： optical design software 3D tomographic reconstruction ray tracing ray tracing plenoptic camera translucent media 3D emission computed tomography

来源：评论

学校读者我要写书评

暂无评论

Optic design and manufacturing issues of a high numerical broad band IR solid immersion microscope objective 19

Optic design and manufacturing issues of a high numerical br...

引用

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

作者： Sure, Thomas Sabbineni, Prasad Ramsay, Euan Univ Appl Sci Mittelhessen Giessen Germany Thermo Fisher Sci 3400 West Warren Ave Fremont CA USA

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

Over the last two decades solid immersion objectives have been developed for various applications, offering the opportunity to achieve a higher resolution than is possible for conventional air objective lenses. For semiconductor applications hemispherical solid immersion lenses (SILs), incorporating tips fabricated in semiconductor materials with a high refractive index (up to n = 3:5 for silicon, for example) are commonly used. With such high refractive index materials it is possible to design an objective with a numerical aperture of NA = 3:2. An apochromatic color correction is mandatory if a broad spectral range from lambda = 1200 nm to lambda = 2000 nm is required. It is well known that glasses with anomalous partial dispersion must be used to realize apochromatic color correction. It will be shown that the anomalous partial dispersions of some glasses in the IR range differ from the known behavior in the visible region. Therefore, glass selection plays a significant role for the design of a high NA broadband IR objective and will be discussed. Monte Carlo tolerance analysis shows that even with state of the art manufacturing capabilities the tolerance induced aberrations of an objective with NA = 3:2 will lead to a dramatic loss of image performance, indicated by a significant drop in the Strehl-ratio. This becomes even worse when the interface of the exchangeable hemispherical SIL tip with the main objective is considered. With the aim to manufacture such objectives within a stable production process it makes no sense to overload the requirements regarding the NA. Therefore, due to manufacturing issues the numerical aperture of this objective has been restricted to NA = 2:9. Wave front measurements of the manufactured objectives shows Strehl-ratios of SR > 97 % which guarantees a diffraction limited resolution.

关键词： Solid immersion lens Optic design High NA optics IR optics Glass selection Manufacturing tolerances

来源：评论

学校读者我要写书评

暂无评论

Field-of-view enhancement for commercially available active imaging camera using time-of-flight technology 19

Field-of-view enhancement for commercially available active ...

引用

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

作者： Poulin-Girard, Anne-Sophie Smith, Michael Gagnon, Mathieu Legault, Marc-Antoine Thibault, Simon Univ Laval Ctr Opt Photon & Lasers 2375 Rue Terrasse Quebec City PQ G1V 0A6 Canada Innovat Vehicle Inst 25 Boul Maisonneuve St Jerome PQ J5L 0A1 Canada

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

Active imaging techniques have been, and will remain relevant as an integral part of the sensor network needed in mobile robotics navigation, most commonly with the use of LiDARs. For close range applications, time-of-flight (TOF) cameras are an alternative to more expensive LiDARs. The Kinect v2 (Kinect for XboxOne) has been used frequently as a range imaging camera in machine vision research because of its low cost and good performance. For mobile robotics applications moving at low speed, a larger field of view than the original (70 degrees X 60 degrees) would be desirable to increase awareness of the surroundings, and also detect other moving objects in the trajectory. Our main goal is therefore to increase the Kinect v2 field of view while keeping its main feature of depth measurements. A simple but effective solution consists in using a conversion lens to increase the ray collection angle before the rays enter the IR camera. Depth measurements remain possible from each pixel using TOF with the Kinect v2 modulated signal, provided the field of illumination matches the field of view. A trade-off has to be made between accuracy of depth measurement, optical performance and field of view/illumination enhancement. Therefore, we modified a Kinect v2 to characterize its optical performances and evaluate its relevancy for applications requiring accurate knowledge of the 3D surroundings. A field of view improvement of the Kinect v2 and other similar TOF cameras could offer an alternative at minimal cost for depth measurements in machine vision, specifically in mobile robotics research where object detection and mapping tasks are frequently carried out.

关键词： Active imaging optical system mobile robotics depth camera range imaging time of flight wide angle machine vision

来源：评论

学校读者我要写书评

暂无评论

Double-folded catadioptric lens for smartphone portraiture photography 7

Double-folded catadioptric lens for smartphone portraiture p...

引用

Conference on optical design and engineering vii

作者： Sheil, Conor J. Goncharov, Alexander V. Natl Univ Ireland Sch Phys Appl Opt Grp Galway Ireland

ISBN: (数字)9781510619180

ISBN: (纸本)9781510619180

Smartphones are increasingly utilising a dual-camera setup, introducing the possible use of one or more specialised camera modules. The current work presents a smartphone camera designed for portraiture. In portraiture, it is desirable to have a natural Bokeh effect, resulting from shallow depth of field (DoF). Because DoF is inversely related to the square of diameter, the proposed lens has a large entrance pupil diameter and low F-number. To fit such a camera within typical smartphone housing, the design is doubly folded, resulting in a compact z-profile (phone thickness) of less than 5 mm, with a total ray path of 13 mm. Due to physical limitations, the field-of-view (FoV) is reduced;this is acceptable, considering the specialised application of the camera and attractively large entrance pupil diameter. With a focal length of 7.6 mm, the system is retrofocus, but could be considered telephoto in terms of its z-height, when compared to typical smartphone lenses. This proof-of-concept design is demonstrated here using glasses. Axial colour is controlled using two doublets. For compactness, the aperture stop is positioned between the first doublet and first fold mirror, also allowing balancing of lateral colour and distortion. For very compact applications, a fixed-focus version of this system was designed. However, considering the large focal length and diameter, the hyperfocal distance is unattractively large;hence, a slightly longer refocussing system was also designed. Refocus is achieved by moving the the second doublet, the power of which must be increased relative to the fixed-focus design-the power increase disturbs the aberration balance about the stop, and hence lateral colour and distortion increase slightly. Distortion remains below 5% and lateral colour should be possible to correct digitally.

关键词： Portraiture catadioptric smartphone optics folded optics depth of field aspherics

来源：评论

学校读者我要写书评

暂无评论

Comparison between the Arclight Ophthalmoscope and a Standard handheld Direct Ophthalmoscope: a Clinical study 19

Comparison between the Arclight Ophthalmoscope and a Standar...

引用

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

作者： Parthasarathy, Mohana Kuppuswamy Faruq, Ibrahim Arthurs, Eugene Lakshminarayanan, Vasudevan Univ Waterloo Sch Optometry & Vis Sci Waterloo ON Canada Costco Opt Waterloo ON Canada SPIE Bellingham WA USA Univ Waterloo Dept Phys Waterloo ON Canada Univ Waterloo Dept ECE Waterloo ON Canada Univ Waterloo Dept Syst Design Engn Waterloo ON Canada

ISBN: (数字)9781510620629

ISBN: (纸本)9781510620629

The direct ophthalmoscope, a handheld device gives a highly magnified image of the retina. However, the sustainability of power source and cost are a limitation considering the usage demand. We compared a low-cost solar-powered Arclight ophthalmoscope with a standard ophthalmoscope Heine K180 in terms of ease of examination, usage, field of view, color rendition and patient comfort. Two clinically trained optometrists examined 28 patients and graded the ease of retinal examination, ease of use and assessed cup-disc ratio, which is an important diagnostic parameter for glaucoma, patient comfort and length of examination (scale 1-4). The examiners had good agreement for all assessments. Of a total of 78 examinations, only 8(10.3%) did not result in cup-disc ratio measurement in the undilated pupil condition using both devices. Ease of use was scored higher for Arclight than Heine but this was not statistically significant. In conditions like large discs, the Arclight resulted in easier examinations due to its larger field of view. Color rendition was better with the Heine device. In undilated pupils, the patients often reported that there was significant glare with Heine, however, post-dilation, they reported more glare with Arclight compared to Heine (73% versus 55%). The performance of Arclight was comparable to that of Heine and can be considered a low-cost alternative to the standard direct ophthalmoscope especially in large-scale patient examinations in developing countries where cost might be a factor.

关键词： Direct Ophthalmoscope Retina ophthalmology cup to disc ratio Arclight ophthalmoscope Heine ophthalmoscope solar powered ophthalmoscope

来源：评论

学校读者我要写书评

暂无评论

Proceedings of SPIE - The International Society for optical engineering

Proceedings of SPIE - The International Society for Optical ...

引用

19th Conference on current developments in lens design and optical engineering 2018

ISBN: (纸本)9781510620612

The proceedings contain 33 papers. The topics discussed include: correction of wavefront aberrations in focal and afocal TMAs;a thermal glass for infrared optics;caustic surfaces produced by a plane wavefront refracted through cemented doublet lenses;holographic progressive lenses;using effective medium theories to design tailored nanocomposite materials for optical systems;toward semantic loop closure in simultaneous localization and mapping systems;optic design and manufacturing issues of a high numerical broad band IR solid immersion microscope objective;optical design and predicted performance of the WFIRST phase-B imaging optics assembly and wide field instrument;and novel designs for minimizing diffraction effects of large segmented mirror telescopes.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Development of surgical binoculars on the basis of polymeric lenses 18

Development of surgical binoculars on the basis of polymeric...

引用

Conference on current developments in lens design and optical engineering XviiI

作者： Voznesenskaya, Anna Andreev, Lev Ekimenkova, Alisa ITMO Univ 49 Kronverksky Av St Petersburg 197101 Russia

The basis of this work is a modification of the modern design of surgical binoculars based on substitution of mineral glasses with polymer lenses. Aberration analyses of the proposed systems is shown.

ISBN: (纸本)9781510612082;9781510612075

关键词： polymeric lenses medical optics surgical binoculars optical system design ergonomics

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共61页 << < 7 8 9 10 11 12 13 14 15 16 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：