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

663 篇 会议
39 篇 期刊文献
1 册 图书
1 篇 学位论文

馆藏范围

704 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

634 篇 理学
- 616 篇 物理学
- 29 篇 数学
- 11 篇 化学
- 7 篇 地球物理学
- 4 篇 系统科学
- 2 篇 大气科学
331 篇 工学
- 133 篇 光学工程
- 99 篇 仪器科学与技术
- 94 篇 电气工程
- 60 篇 材料科学与工程（可...
- 46 篇 电子科学与技术（可...
- 46 篇 计算机科学与技术...
- 36 篇 软件工程
- 27 篇 化学工程与技术
- 23 篇 信息与通信工程
- 14 篇 机械工程
- 13 篇 控制科学与工程
- 9 篇 航空宇航科学与技...
- 5 篇 冶金工程
- 5 篇 建筑学
- 4 篇 力学（可授工学、理...
- 4 篇 核科学与技术
- 3 篇 动力工程及工程热...
- 3 篇 土木工程
- 3 篇 生物医学工程（可授...
- 3 篇 生物工程
119 篇 医学
- 117 篇 临床医学
16 篇 管理学
- 16 篇 管理科学与工程(可...
- 8 篇 工商管理
5 篇 经济学
- 5 篇 应用经济学
1 篇 法学
1 篇 农学

主题

120 篇 optical design
63 篇 lens design
28 篇 optical systems
24 篇 optical engineer...
24 篇 lenses
19 篇 mirrors
16 篇 distortion
15 篇 monochromatic ab...
14 篇 telescopes
14 篇 refractive index
13 篇 diffraction
13 篇 glasses
13 篇 tolerancing
13 篇 optimization
12 篇 spherical lenses
12 篇 optical componen...
12 篇 diffractive opti...
11 篇 geometrical opti...
11 篇 image quality
10 篇 cameras

机构

9 篇 univ arizona col...
5 篇 caltech jet prop...
4 篇 s.i. vavilov sta...
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 nasa goddard spa...
3 篇 univ waterloo de...

作者

24 篇 thibault simon
14 篇 sun ching-cherng
7 篇 parent jocelyn
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 thibault s.
5 篇 mahajan virendra...
5 篇 santiago-alvarad...
5 篇 yu yeh-wei
5 篇 yang tsung-hsun
4 篇 gonzalez-garcia ...
4 篇 lalonde jean-fra...
4 篇 ma shih-hsin
4 篇 bociort florian
4 篇 van turnhout maa...

语言

698 篇 英文
4 篇 中文
2 篇 其他

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

共 704 条记录，以下是281-290 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：

Reflaxicon objectives for imaging

Reflaxicon objectives for imaging

引用

Conference on current developments in lens design and optical engineering XIII

作者： Nadorff, Georg DeWitt, Frank CVI Melles Griot Rochester NY 14620 USA

ISBN: (纸本)9780819492036

We introduce a novel application of reflective axicon surfaces to high performance image-forming objectives. The reflective surfaces are arranged such that the optical and mechanical axes are collinear, yet have the potential to provide unobscured transmission. Offering the ability to compete with the performance of traditional diffraction-limited unobscured optical systems provides a design and fabrication alternative where demanding optical requirements must be met. There are four possible arrangements for construction, with the two outer reflectors always being concave and the two inner reflectors being either concave or convex. Multitudes of novel design forms are explored. We describe monolithic and two-piece solid, two- and three-piece reflective, and two- piece hollow-solid hybrids. We analyze the performance of such designs and compare to the performance of both refractive and reflective systems.

关键词： reflective axicon lens forms objective Schwarzschild obscuration-free obscured long working distance

来源：评论

学校读者我要写书评

暂无评论

Thermal optical Path Difference Analysis of Off-Axis lens Ray Trace Foot-Print at Cassegrain telescope correct lens assembly

Thermal Optical Path Difference Analysis of Off-Axis Lens Ra...

引用

Conference on current developments in lens design and optical engineering XIII

作者： Hsu, Ming-Ying Lin, Yu-Chuan Chan, Chia-Yen Lin, Wei-Cheng Chang, Shenq-Tsong Huang, Ting-Ming Natl Appl Res Labs Instrument Technol Res Ctr Hsinchu 300 Taiwan

ISBN: (纸本)9780819492036

The Cassegrain telescope system in this study, is discussion correct lens thermal OPD (optical Path Difference) effect optical performance. The correct lens assembly are includes several components such as correct lens, lens mount, spacer, mount barrel and retainer. The heat transfer from surrounding to the correct lens barrel will causes optical system aberration. Meanwhile, the off-axis rays path of the OPD must consider lens incidence point and emergence point. The correct lens temperature distribution is calculate the lens barrel heat transfer analysis, the thermal distortion and stress are solve by FEM (Finite Element Method) software. The temperature calculation results can be weighting to each incidence ray path and calculate thermal OPD. The thermal OPD on Z-direction can be fitted by rigid body motion and Zernike polynomial. The fitting results can be used to evaluate the thermal effect on correct lens assembly in telescope system.

关键词： OPD FEM Ray trace Off-axis Correct lens

来源：评论

学校读者我要写书评

暂无评论

design and fabrication of imaging optical systems with freeform surfaces

Design and fabrication of imaging optical systems with freef...

引用

Conference on current developments in lens design and optical engineering XIII

作者： Zhang Xin Zheng Ligong He Xin Wang Lingjie Zhang Feng Yu Shuqin Shi Guangwei Zhang Binzhi Liu Qiang Wang Tongtong Changchun Inst Opt Key Lab Opt Syst Adv Mfg Technol Changchun 130033 Peoples R China

ISBN: (纸本)9780819492036

Freeform surfaces provide more degrees of freedom for design of optical systems, and enhance the ability of compensation and correction aberrations. Freeform surfaces are of advantage to balance the unsymmetrical aberrations, especially for the wide-field off-axis optical systems. This paper focus on an off-axis reflective optical system, which focal length is 550mm, F# is 6.5 and field of view (FOv) is 76 degrees. The system adopts some freeform surfaces. We discuss the problems we noticed in processes of design, manufacture, measurement and alignment, and the solutions. At last, the periodical research result and the expected performance are given.

关键词： Freeform surfaces aberrations correction off-axis reflective optical system wide FOv

来源：评论

学校读者我要写书评

暂无评论

Gain in optical Coatings

Gain in Optical Coatings

引用

Conference on current developments in lens design and optical engineering XIII

作者： Macleod, Angus Clark, Christopher Thin Film Ctr Inc Tucson AZ 85716 USA

ISBN: (纸本)9780819492036

The introduction of gain into an optical medium is most easily accomplished by reversing the sign of the extinction coefficient. The theoretical expression for reflectance at a simple boundary between a dielectric, lossless incident medium and a medium with a finite extinction coefficient, however, takes no account of the sign of the extinction coefficient In such an arrangement, therefore, can the presence of gain possibly result in an enhanced reflectance? Opinions in the literature differ but tend to find enhancement beyond the critical angle and none below. This study examines both cases and shows that all results are in fact correct but they are not necessarily stable and it is their stability, or lack of it, that leads to the different results.

关键词： Gain in optical coatings optical coating theory admittance loci with gain

来源：评论

学校读者我要写书评

暂无评论

design and development of bi-directional viewer

Design and development of bi-directional Viewer

引用

Conference on current developments in lens design and optical engineering XIII

作者： Yu, Zong-Ru Ho, Cheng-Fang Liu, Annie Lee, Tai-Wen Lin, Wen-Lung Hsu, Wei-Yao Natl Appl Res Labs Instrument Technol Res Ctr Hsinchu 300 Taiwan

ISBN: (纸本)9780819492036

Bi-directional viewer just likes a lens of camera. Unlike conventional camera lens, the bi-directional viewer captures not only front view but also side view around the bi-directional viewer. The barrel of bi-directional viewer was designed to have cuts in the side to allow side light to come through, and we use two aspherical mirrors to receive and change the side light to converge on the main optical path. The front view and side view can be imaged simultaneously on an image sensor. Commercial aspherized achromatic lens and micro video lens were also used to keep the image quality and miniaturize the size of the bi-directional viewer respectively. We report on the development of bi-directional viewer, including optical design, optical simulation, optomechanics design, fabrication techniques, assembly procedure and performance testing. The MTF of the bi-directional viewer is also measured and discussed in this paper. We successfully design and realize a bi-directional viewer, which can perform 100 lp/mm spatial frequency image in detail above 20% contrast in the 7.6 mm front view area. And we keep the dimensions of this device within 35 mm in total length and phi 20 mm in diameter.

关键词： Bi-directional viewer Side view MTF Catadioptric Dual-view

来源：评论

学校读者我要写书评

暂无评论

Microelectrofluidic lens for variable Curvature

Microelectrofluidic Lens for Variable Curvature

引用

Conference on current developments in lens design and optical engineering XIII

作者： Chang, Jong-hyeon Lee, Eunsung Jung, Kyu-Dong Lee, Seungwan Choi, Minseog Kim, Woonbae Samsung Adv Inst Technol Micro Syst Lab Yongin 446712 Gyeonggi Do South Korea

ISBN: (纸本)9780819492036

This paper presents a tunable liquid lens based on microelectrofluidic technology which integrates electrowetting and microfluidics. In the novel microelectrofluidic lens (MEFL), electrowetting in the hydrophobic surface channel induces the Laplace pressure difference between two fluidic interfaces on the lens aperture and the surface channel. Then, the pressure difference makes the lens curvature tunable. The previous electrowetting lens in which the contact angle changes at the side wall has a certain limitation of the curvature variation because of the contact angle saturation. Although the contact angle saturation also appears in the surface channel of the MEFL, the low surface channel increases the Laplace pressure and it makes the MEFL to have full variation of the optical power possible. The magnitude of the applied voltage determines the lens curvature in the analog mode MEFL as well as the electrowetting lens. Digital operation is also possible when the control electrodes of the MEFL are patterned to have an array. It is expected that the proposed MEFL is able to be widely used because of its full variation of the optical power without the use of oil and digital operation with fast response.

关键词： Microelectrofluidic lens variable curvature surface channel electrowetting contact angle Laplace pressure

来源：评论

学校读者我要写书评

暂无评论

Color mixing collimating lamp based on RGB LEDs

Color mixing collimating lamp based on RGB LEDs

引用

Conference on current developments in lens design and optical engineering XIII

作者： Lo, Yi-Chien Moreno, Ivan Chiu, Bo-Chun Chien, Wei-Ting Cai, Jhih-You Chang, Yu-Yu Sun, Ching-Cherng Natl Cent Univ Inst Lighting & Display Sci Dept Opt & Photon Chungli 320 Taiwan

ISBN: (纸本)9780819492036

A novel light luminaire is proposed and experimentally analyzed, which efficiently mixes and projects the tunable light from red, green and blue (RGB) light-emitting diodes (LEDs). Simultaneous light collimation and color mixing is a challenging task because most collimators separate colors, and most color mixers spread the light beam. We performed an experimental study to find a balance between optical efficiency and color uniformity by changing light recycling and color mixing.

关键词： LED color mixing color uniformity optical efficiency luminaire

来源：评论

学校读者我要写书评

暂无评论

Eliminating Dewar Narcissus artifacts induced by moving optics in infrared staring focal plane sensors

Eliminating Dewar Narcissus artifacts induced by moving opti...

引用

Conference on current developments in lens design and optical engineering XIII

作者： McCulloch, Philip M. Olson, Craig Goodman, Timothy D. L3 Commun Sonoma EO Santa Rosa CA 95403 USA

ISBN: (纸本)9780819492036

Staring infrared imagers have multiple surfaces within the integrated Dewar assembly which contribute to non-traditional Narcissus artifacts. Static non-uniformity correction is insufficient to remove dynamic Narcissus artifacts caused by moving focus or zoom groups. Dynamic Narcissus artifacts often manifest as rings apparent to the human eye, although they may lie near the noise floor of the imager. Moreover, strong field curvature of the Narcissus can complicate diagnosis using paraxial methods. We compare a simple pupil ghost metric to traditional Narcissus metrics and present an experimental case study illustrating how the metric can be used during optimization to eliminate the effect.

关键词： optical design Narcissus staring array infrared optics YNI i/ibar

来源：评论

学校读者我要写书评

暂无评论

Liquid crystal lens focusing in monocentric multiscale imagers

Liquid crystal lens focusing in monocentric multiscale image...

引用

Conference on current developments in lens design and optical engineering XIII

作者： Stamenov, Igor Tremblay, Eric Baker, Katherine A. McLaughlin, Paul Ford, Joseph E. Univ Calif San Diego Dept Elect & Comp Engn La Jolla CA 92093 USA

ISBN: (纸本)9780819492036

In multiscale imagers a single objective lens is shared by multiple secondary optical systems, so that a high-resolution wide-angle image is acquired in overlapping fields sensed by multiple conventional focal planes. In the "AWARE2" 2 Gigapixel imager, F/2.4 optics cover a 120 degree field of view using a monocentric glass primary lens shared by 221 molded plastic subimagers, each with a 14 Megapixel focal plane. Such imagers can independently focus parts of the image field, allowing wide-angle imaging over relatively close and deep image fields. However, providing hundreds of independent mechanical focus adjustments has a significant system impact in terms of complexity, bulk, and cost. In this paper we explore the use of an electronically controlled liquid crystal lens for focus of multiscale imagers in general, and demonstrate use with the AWARE2 imager optics. The lens vector Auto Focus (LvAF) liquid crystal lens provides up to 5 diopters of optical power over a 2.2mm aperture diameter, the maximum currently available aperture. However, a custom lens using the same materials and basic structure can provide the 5 diopters power and 6.4 mm aperture required to obtain full resolution overlapping image fields in the AWARE2 imager. We characterize the LvAF lens and the optical performance of the LvAF lens in the current AWARE2 prototype, comparing the measured and optically modeled resolution, and demonstrating software control of focus from infinity to an 2m object distance.

关键词： Monocentric imager liquid crystal lens Gigapixel focusing mechanism LC focus Multiscale monocentric wide field panoramic

来源：评论

学校读者我要写书评

暂无评论

Method for determining individual element misalignments in optical systems

Method for determining individual element misalignments in o...

引用

Conference on current developments in lens design and optical engineering XIII

作者： Oteo, Esther Diaz, J. A. Arasa, J. Tech Univ Catalonia Terrassa Spain

ISBN: (纸本)9780819492036

A new method for the misalignments calculation has been developed based in the analysis of the coefficients of the Zernike polynomial adjustment to the on-axis wavefront of the optical system. By means of a study of the system behavior in front of misalignments when they are small perturbations of position around the nominal value, it is shown that the Zernike coefficients behaviour can be aproximated with a polynomial. The coefficients of the Zernike polynomial are used to form a system of non-linear equations where the unknown variables are the misalignment values. This system of equations can be solved to find the misalignments values. The method has been validated by the simulation of a triplet where the second lens is misaligned. A series of misalignments of decentering and tilt have been applied and by simulation the wavefront have been obtained. Then the method has been used to calculate the misalignments from the wavefronts. Good results have been obtained for decentering and tilt separetely. With this process, the error of calculation for the tilt and the decentering has been obatined to be less than 20% for the simulated triplet system.

关键词： optical systems elements alignment misalignments Zernike Coefficients wavefront evaluation

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71页 << < 25 26 27 28 29 30 31 32 33 34 > >>

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：