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

465 篇 会议
2 篇 期刊文献

馆藏范围

467 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

461 篇 理学
- 461 篇 物理学
- 1 篇 数学
- 1 篇 化学
- 1 篇 天文学
- 1 篇 地球物理学
131 篇 工学
- 60 篇 电气工程
- 45 篇 仪器科学与技术
- 34 篇 材料科学与工程（可...
- 9 篇 光学工程
- 4 篇 电子科学与技术（可...
- 3 篇 控制科学与工程
- 3 篇 计算机科学与技术...
- 3 篇 软件工程
- 2 篇 动力工程及工程热...
- 1 篇 信息与通信工程
- 1 篇 化学工程与技术
- 1 篇 农业工程
111 篇 医学
- 111 篇 临床医学
1 篇 农学
- 1 篇 作物学

主题

84 篇 optical design
53 篇 lens design
12 篇 distortion
12 篇 optimization
11 篇 refractive index
11 篇 diffractive opti...
11 篇 monochromatic ab...
10 篇 tolerancing
10 篇 geometrical opti...
9 篇 optical engineer...
9 篇 athermalization
9 篇 optical system d...
9 篇 optical componen...
8 篇 imaging systems
8 篇 spherical lenses
8 篇 mirrors
8 篇 spherical aberra...
8 篇 telescopes
8 篇 lenses
8 篇 sensors

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...
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...
3 篇 natl cent univ d...

作者

16 篇 thibault simon
13 篇 sun ching-cherng
6 篇 thibault s
5 篇 santiago-alvarad...
5 篇 thienpont hugo
5 篇 vazquez-montiel ...
5 篇 kucukcelebi doru...
5 篇 lee xuan-hao
5 篇 santiago-alvarad...
4 篇 gonzalez-garcia ...
4 篇 ma shih-hsin
4 篇 bociort florian
4 篇 van turnhout maa...
4 篇 mahajan virendra...
4 篇 dilworth donald ...
4 篇 mouroulis p
4 篇 borovytsky volod...
4 篇 lee tsung-xian
4 篇 schwiegerling ji...
4 篇 parent jocelyn

语言

467 篇 英文

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

共 467 条记录，以下是11-20 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：

Fundamental and specific steps in Shack-Hartmann wavefront sensor design

Fundamental and specific steps in Shack-Hartmann wavefront s...

引用

conference on current developments in lens design and optical engineering vii

作者： Curatu, Costin Curatu, George Rolland, Jannick Univ Cent Florida CREOL FPCE Coll Opt & Photon Orlando FL 32816 USA

ISBN: (纸本)0819463671

Shack-Hartmann sensors are widely used to measure wavefront aberrations. We present the fundamental and specific engineering steps in the design of Shack-Hartmann wavefront sensors. Typical performance requirements such as sensor dynamic range, sensitivity and accuracy are defined and discussed. We investigate the trade-offs between these performance metrics and the factors affecting the trade-offs. A first order approach for selecting the optimal parameters of the sensor central piece, the lenslet array, is presented. We also propose a quick tolerance analysis method that can predict the wavefront measurement error due to misalignments, using only the ray-tracing software.

关键词： wavefront sensing Shack-Hartmann sensor tolerance analysis

来源：评论

学校读者我要写书评

暂无评论

Analysis and design of an adaptive lens

Analysis and design of an adaptive lens

引用

conference on current developments in lens design and optical engineering vii

作者： Santiago-Alvarado, A. Vazquez-Montiel, S. Gonzalez-Garcia, J. Garcia-Luna, V. M. Fernandez-Morena, A. Vera-Diaz, E. UTM Inst Fis & Matemat Huajuapan Leon Oaxaca 6900 Mexico INAOE Inst Opt Puebla Mexico

ISBN: (纸本)0819463671

This study presents the design and analysis of a lens with a variable focal length, which we will call an adaptive lens. This lens is formed of two transparent elastic surfaces with a transparent liquid medium between them. The mechanical design of the lens considers the variation of liquid pressure between the surfaces. This causes changes in curvature radii and in the axial thickness, generating variations in the focal length of the lens. An analysis is given of changes in lens power with respect to changes in pressure. Finally, a model of the human eye is presented using this adaptive lens as crystalline.

关键词： adaptive elastic surfaces liquid lens model human eyes

来源：评论

学校读者我要写书评

暂无评论

Self-weight distortion of lens elements

Self-weight distortion of lens elements

引用

conference on current developments in lens design and optical engineering vii

作者： DeWitt, Frank Nadorff, Georg Naradikian, Markar Melles Griot Opt Grp 55 Sci Pkwy Rochester NY 14620 USA

ISBN: (纸本)0819463671

Changes in the shape of large lens elements due to the influences of gravity are important to consider in the fabrication, testing and assembly of optical systems. Tried and proven methods used for mounting large mirrors to minimize the effects of gravity are typically not applicable to large transmissive lens elements, due to the simple requirement that the clear aperture of a lens must remain free of mechanical obstructions. Precautions must be taken to ensure that an element's surfaces are correctly fabricated and then maintained when assembled into the final system. The amount of distortion caused by the weight of a particular lens element is dependent on a number of factors including: size, aspect ratio, shape, material, and the support on which it rests. Examples of the effects of these factors are modeled using Finite Element Analysis and demonstrated through interferometric testing. Attention is given to the mounting of lens elements within a system and simulating "real-world" conditions. These "real-world" conditions can produce results that are different from what was expected if only ideal cases have been considered. The work presented will aid the designer, fabricator, and metrologist to identify what optical elements and mounting conditions may be problematic and to minimize their effects.

关键词： optomechanical finite element analysis self-weight distortion gravity sag optical mounting tolmncing surface irregularity

来源：评论

学校读者我要写书评

暂无评论

optical design of the focal adjustable flashlight based on a power white-LED

Optical design of the focal adjustable flashlight based on a...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings vii

作者： Cai, Jhih-You Lo, Yi-Chien Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Inst Lighting & Display Sci Taipei Taiwan

ISBN: (纸本)9780819487384

In the paper, we design a focal adjustable flashlight, which can provide the spotlight and the wide-angle illumination in different modes. For most users, they two request two illumination modes. In such two modes, one is high density energy of the light pattern and the other is the uniform light pattern in a wide view field. In designing the focal adjustable flashlight, we first build a precise optical model for the high-power LED produced by CREE Inc. in mid-field verification to make sure the accuracy of our simulation. Typically, the lens is useful to be the key component of the adjustable flashlight, but the optical efficiency is low. Here, we introduce a concept of so-called total internal refraction (TIR) lens into the design of flashlight. By defocusing the TIR lens, the flashlight can quickly change the beam size and energy density to various applications. We design two segments of the side of the TIR lens so that they can be applied to the two modes, and the flashlight provides a high optical efficiency for each mode. The illuminance of the center of light pattern at a distance of 2 m from the lamp is also higher than using the lens in the spotlight and wide-angle illumination. It provides good lighting functions for users.

关键词： Spotlight Wide-angle illumination LED TIR lens

来源：评论

学校读者我要写书评

暂无评论

Plane development of lateral surfaces for inspection systems

Plane development of lateral surfaces for inspection systems

引用

conference on current developments in lens design and optical engineering vii

作者： Francini, F. Fontani, D. Jafrancesco, D. Mercatelli, L. Sansoni, P. Ist Nazl Ott Appl L Go E Fermi 6 I-50125 Florence Italy

ISBN: (纸本)0819463671

The problem of developing the lateral surfaces of a 3D object can arise in item inspection using automated imaging systems. In an industrial environment, these control systems typically work at high rate and they have to assure a reliable inspection of the single item. For compactness requirements it is not convenient to utilise three or four CCD cameras to control all the lateral surfaces of an object. Moreover it is impossible to mount optical components near the object if it is placed on a conveyor belt. The paper presents a system that integrates on a single CCD picture the images of both the frontal surface and the lateral surface of an object. It consists of a freeform, lens mounted in front of a CCD camera with a commercial lens. The aim is to have a good magnification of the lateral surface, maintaining a low aberration level for exploiting the pictures in an image processing software. The freeform lens, made in plastics, redirects the light coming from the object to the camera lens. The final result is to obtain on the CCD: - the frontal and lateral surface images, with a selected magnification (even with two different values for the two images);- a gap between these two images, so an automatic method to analyse the images can be easily applied. A simple method to design the freeform lens is illustrated. The procedure also allows to obtain the imaging system modifying a current inspection system reducing the cost.

关键词： optical design freeform optics industrial control optical component

来源：评论

学校读者我要写书评

暂无评论

design of a free-form lens system for short distance projection

Design of a free-form lens system for short distance project...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings vii

作者： Yang, Bo Lu, Kan Zhang, Wei Dai, Fujian Shanghai Univ Sci & Technol Shanghai Key Lab Contemporary Opt Syst Sch Opt Elect & Comp Engn Shanghai 200093 Peoples R China Zhejiang Sunny Opt Co Ltd R&D Dept Yuyao 315400 Zhejiang Peoples R China

ISBN: (纸本)9780819487384

A free-form lens system design is proposed for short distance projection. Free-form surface shape and non-rotational symmetrical structure provide us more freedoms for optimization. The catadioptric structure is also used to reduce the overall length of the whole system. The designed projector lens system consists of two parts. The first part is a rotationally symmetrical lens system which corrects the basic aberrations. The second part contains a free-form lens and a reflector which correct the distortion and other aberrations. We achieve 55inch projected image size at a display screen which is 300mm away from the lens system. The maximum distortion for all fields at all distances is less than 3%.

关键词： optical engine Projection lens Free-form Catadioptric Least-square fitting

来源：评论

学校读者我要写书评

暂无评论

Cryogenic lens design Case Study: Gemini Planet Imager Spectrograph

Cryogenic Lens Design Case Study: Gemini Planet Imager Spect...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings vii

作者： Thibault, S. Univ Laval Dept Phys Quebec City PQ G1V 0A6 Canada

ISBN: (纸本)9780819487384

Making a lens design working at cryogenic temperature is a real challenge. Both optical and mechanical designer must work together to prevent problems during operation. The Gemini Planet Imager (GPI), currently under construction will be a facility instrument for the 8-m Gemini South telescope. The science instrument is a cryogenic integral field spectrograph based on a lenslet array. The integral field nature of the instrument allows for a full mapping of the focal plane at coarse spectral resolution. With such a data cube, artifacts within the PSF such as residual speckles can be suppressed. Additionally, the initial detection of any candidate planet will include spectral information that can be used to distinguish it from a background object: candidates can be followed up with detailed spectroscopic observations. The optics between the lenslet array and the detector are essentially a standard spectrograph with a collimating set of lenses, a dispersive prism and a camera set of lenses in a folded assembly. This paper describes the process from the first preliminary design to the final cryogenic system for both optical and mechanical design to achieve cryogenic working solution. We also discussed the assembly procedure (room temperature vs cryogenic compensation), the test support equipments and finally the laboratory optical performances over the field of view.

关键词： Planet imager cryogenic spectrograph test image quality

来源：评论

学校读者我要写书评

暂无评论

A hardware-based simulation platform for optical design and engineering

A hardware-based simulation platform for optical design and ...

引用

conference on current developments in lens design and optical engineering vii

作者： Ortiz, Fernando E. Durbano, James P. Sharkawy, Ahmed S. Shi, Shouyuan Curt, Petersen F. EM Photon 51 E Main StSuite 203 Newark DE 19711 USA

ISBN: (纸本)0819463671

optical lenses and systems have historically been of interest to the design and simulation community due to their extensive use in a variety of applications, including telecommunications and imaging. To simulate these systems, it is often possible to take advantage of symmetry or apply physical approximations, such as ray tracing and/or beam propagation, in order to avoid a rigorous solution of Maxwell's equations. However, in cases where these techniques are not applicable, such as when feature sizes become comparable to the wavelength of interest, full-wave electromagnetic simulations are required. Unfortunately, the time constraints and simulation sizes associated with many designs render this analysis infeasible or impractical, a problem that is aggravated by iterative design flows. Hence, a numerical platform capable of handling such computationally intense problems is necessary. In this paper, we present a hardware-based, full-wave simulation platform and demonstrate the advantages of hardware acceleration for the simulation of optical applications. Specifically, we will present a diffractive optical element (DOE) lens simulation, comparing results with previously published analytic and experimental data. We then modify the basic lens arrangement to produce an optical beam splitter. Because such a device cannot be analytically described using symmetry, this example will demonstrate the unique advantages of powerful hardware solvers for the analysis of DOE applications. Finally, we discuss how hardware-based solvers are critical for iterative designs by means of a 1-to-3 beam splitter example. This simulation system represents a new era in optical engineering, enabling the design of next-generation devices today.

关键词： optics lens DOE splitter design hardware simulation FDTD FPGA acceleration

来源：评论

学校读者我要写书评

暂无评论

Low profile optic design for mobile camera using dual freeform reflective lenses

Low profile optic design for mobile camera using dual freefo...

引用

conference on current developments in lens design and optical engineering vii

作者： Jeong, Ho-Seop Yoo, Ho-Sik Lee, Sang-Hyuk Oh, Hae-Ran Samsung Elect Mech Cent R&D Inst Opt Lab Suwon 443743 South Korea

ISBN: (纸本)0819463671

Aspherical glass or plastic lenses are usually adapted in the camera module of handheld phone. Recently, slimmer cameras are required according to reducing thickness of handheld phone. In this paper, we present an ultra slim camera module using multiple freeform off-axis imaging lenses. New optical concept of multiple lens system introduces the planar optics with freeform. shaped aspherical lens surface on the wafer, which can achieve the thickness of 50% compared to the conventional symmetric lens system. In order to achieve the resolution specification, we separate the field of view in camera module. As the result, two inverted images are produced on a same imaging sensor and the acquired inverted images are processed by photo stitching algorithm so as to combine them. Finally, in order to verify the new imaging system, we manufacture the new slim lens through the LJV embossing replication process. We found the new imaging system is feasible for VGA resolution and it can be expandable to the high resolution system.

关键词： freeform. surface planar integrated optics photo stitching wafer scale lens UV embossing

来源：评论

学校读者我要写书评

暂无评论

Progressive addition lens design by optimizing NURBS surface

Progressive addition lens design by optimizing NURBS surface

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings vii

作者： Liu, Yen-Liang Hsu, Wei-Yao Cheng, Yuan-Chieh Su, Guo-Dong Natl Taiwan Univ Grad Inst Photon & Optoelect 1Sec 4Roosevelt Rd Taipei 10617 Taiwan Natl Appl Res Labs Instrument Technol Res Ctr Hsinchu 300 Taiwan

ISBN: (纸本)9780819487384

Progressive addition lenses (PAL) are used to compensate presbyopia, which is induced by losing accommodation of elder eyes. These eyes need different optical power provided by eye glasses while watching objects at different distance. A smaller optical power is required in further distance and a larger one in nearer zone. A progressive addition lens can provides different power requirements in one piece of lens. This paper introduces a whole process of PAL production, from design, fabrication, to measurement. The PAL is designed by optimizing NURBS surface. Parameters of merit function are adjusted to design lenses with different specifications. The simulation results confirm that the power distributes as expected and cylinders are controlled under an acceptable level. Besides, sample lenses have been produced by injecting polycorbonate to the molds. Finally, Ultra Accuracy 3D Profilemeter is used to measure the sample PALs. Practical examinations shows that our designs are achievable and feasible in practice use.

关键词： progressive addition lens NURBS precision machining ultrahigh accurate 3 dimensional profilemeter UA3P

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47页 << < 1 2 3 4 5 6 7 8 9 10 > >>

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：