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

628 篇 会议
6 篇 期刊文献
1 册 图书

馆藏范围

635 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

588 篇 理学
- 577 篇 物理学
- 9 篇 数学
- 7 篇 化学
- 5 篇 天文学
- 4 篇 系统科学
- 3 篇 大气科学
219 篇 工学
- 89 篇 电气工程
- 69 篇 仪器科学与技术
- 41 篇 材料科学与工程（可...
- 34 篇 光学工程
- 29 篇 电子科学与技术（可...
- 29 篇 计算机科学与技术...
- 21 篇 软件工程
- 18 篇 航空宇航科学与技...
- 12 篇 信息与通信工程
- 10 篇 机械工程
- 7 篇 控制科学与工程
- 7 篇 化学工程与技术
- 5 篇 土木工程
- 4 篇 测绘科学与技术
- 3 篇 冶金工程
- 3 篇 建筑学
- 3 篇 生物医学工程（可授...
- 2 篇 力学（可授工学、理...
- 2 篇 动力工程及工程热...
- 2 篇 环境科学与工程（可...
104 篇 医学
- 103 篇 临床医学
12 篇 管理学
- 12 篇 管理科学与工程(可...
- 4 篇 工商管理
2 篇 经济学
- 2 篇 应用经济学
1 篇 法学

主题

97 篇 optical design
55 篇 lens design
16 篇 mirrors
15 篇 sensors
15 篇 refractive index
14 篇 optical engineer...
14 篇 monochromatic ab...
13 篇 distortion
13 篇 optimization
13 篇 optical componen...
13 篇 diffractive opti...
12 篇 tolerancing
12 篇 optical systems
12 篇 geometrical opti...
11 篇 imaging systems
11 篇 infrared
11 篇 wavefronts
11 篇 telescopes
11 篇 lenses
10 篇 diffraction

机构

9 篇 univ arizona col...
5 篇 caltech jet prop...
5 篇 fraunhofer inst ...
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 univ rochester i...
3 篇 vrije univ bruss...
3 篇 natl cent univ t...
3 篇 costco opt water...
3 篇 rose hulman inst...
3 篇 ball aerosp & te...
3 篇 natl cent univ d...
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
9 篇 sun ching-cherng
6 篇 thibault s
5 篇 thienpont hugo
5 篇 kucukcelebi doru...
4 篇 santiago-alvarad...
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
4 篇 ahmad a
4 篇 jaing cheng-chun...
4 篇 yu yeh-wei
4 篇 yang tsung-hsun
3 篇 benitez pablo

语言

634 篇 英文
1 篇 中文

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

共 635 条记录，以下是431-440 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：

Scalable MWIR and LWIR optical system designs employing a large spherical primary mirror and small refractive aberration correctors

Scalable MWIR and LWIR optical system designs employing a la...

引用

conference on current developments in Lens design and optical engineering II

作者： Beach, D Ind Res Ltd Auckland New Zealand

ISBN: (纸本)0819441554

design variants of a recently developed optical imaging system have been computed for the thermal infrared spectral bands, which offer some advantages for long-range surveillance and astronomy. Only the spherical primary mirror has the fall pupil diameter, all other components being sub-diameter, so scaling is possible up to relatively large pupils. Low-cost fabrication is enabled by the prevalence of spherical optical surfaces. Both MWIR and LWIR spectral transmissions are enabled by the choice of corrector materials, the examples given employing germanium and sapphire for 3.5-5.5 mum and germanium and zinc selenide for 3.5-5.5[mum and 8-12mum passbands. Diffraction at these wavelengths is the main contributor to resolution constraints, so high numerical aperture values are preferred to enable a better match of blur spot diameter to generally available pixel dimensions. The systems described can routinely be designed to have speeds of f/0.8 or faster, while maintaining diffraction-limited performance over useful angular fields. Because the new design system employs a relayed catadioptric, it is possible to make the aperture stop of the system coincident with the window of the detector cryostat, enabling precise radiometric geometry. The central obscuration provides a convenient location for a calibration source, and both this and a mask for secondary spider supports can be included within the detector cold screen structure. Dual-band operation could be enabled by inclusion of a spectral beam splitter prior to a dual relay/imager system.

关键词： MWIR imaging LWIR imaging diffraction-limited spherical mirror optics high speed wide field

来源：评论

学校读者我要写书评

暂无评论

Advanced optical design for biochip scanning system

Advanced optical design for biochip scanning system

引用

conference on current developments in Lens design and optical engineering II

作者： Huang, GL Cheng, J Zhou, YX Feng, JH Liu, CX Jin, GF Wu, MX Yan, YB Yang, R Li, L Tsing Hua Univ Dept Biol Sci & Technol Beijing 100084 Peoples R China

ISBN: (纸本)0819441554

Laboratory-on-a-chip has been interested widely in recent years, where the sample preparation, bio-chemical reaction, separation, detection and analysis, are performed in a small biochip which is only a fingernall dimension. In order to obtain a high detection sensitivity I fluors/um(2) (one fluorescence molecule per square micrometer) in biochip scanning system it is required that the scanning objective lens is a big numerical aperture(>0.5), very small focal spot(<5um) and long back focal length(>3mm). In this paper, a combined lens is designed for the scanning objective lens, which is with big numerical aperture NA>0.7, very small focal spot(<2um) and long back focal length(>3mm). The phase aberrations of combined lens, including the aspherical aberration and the chromatic aberration corresponding to wavelength 532nm, 570nm 635nm, 670nm, are corrected very well. The encircled energy diagram of the lens is good to the diffraction limit. The focal spot diagram the optical path difference diagram, the transverse ray fan plot and the modulation transfer function, are studied also. A novel confocal scanning system of biochip with the designed combined lens as the objective lens is developed, some experiment results in a multi-channel biochip are obtained.

关键词： lens confocal fluorescence gene DNA biochip

来源：评论

学校读者我要写书评

暂无评论

Optics for binocular telescopes.

Optics for binocular telescopes.

引用

conference on current developments in Lens design and optical engineering II

作者： Rayces, JL Rosete-Aguilar, M J L Rayces Consuting Ltd Laguna Niguel CA 92677 USA

ISBN: (纸本)0819441554

Low power telescopes such as those used in pairs in binoculars do not have a reticle at the intermediate, real, image plane. Therefore there is no need to correct aberrations of the intermediate images as it is in pointing devices. Generally, in order to keep the telescope simple and short the Petzval sum is not corrected. In most cases the solution is to introduce astigmatism in the eyepiece. If it is permissible to use the accommodation of the eye as a degree of freedom then it is possible to remove the astigmatism over the entire field of view and yet to obtain ever better imagery. The final virtual anastigmatic images presented to the eye by the telescope are formed on a curved surface convex towards the observer's eye. The eye will be focused at a close distance for axial images and relaxed for the extreme off-axis images. Then the telescope is to be designed for different conjugate positions at different field angles. Furthermore the telescope is to be designed for different exit pupil locations at different field angles in order to minimize vignetting when the exit pupil is not sufficiently large, designing for different conjugate and pupil position at different field angles is almost always possible with most optical design codes using multiple configuration mode.

关键词： optical design telescopes binoculars eyepieces

来源：评论

学校读者我要写书评

暂无评论

High speed and high definition technology by multi-beam scanning in laser printing

High speed and high definition technology by multi-beam scan...

引用

conference on current developments in Lens design and optical engineering II

作者： Hayashi, Y Amada, T Ricoh Co Ltd Ricoh Imaging Technol Div Tokyo Japan

ISBN: (纸本)0819441554

Multi-beam scanning is the effective method for high speed and high definition in Laser Printing, and there are three systems for this method as fellows. 1) Laser Diode (LD) Array system 2) System for dividing a single light source 3) System for combining beams of multiple LDs by optical devices Each of these systems has both advantage and disadvantage, and which one to use among these three depends on application requirements. The third system above allows for the use of conventional LDs and therefore it is low cost and offers a large degree of freedom in selecting light sources. We have already developed a Two LD Prism-based Light Source Unit that uses a C, prism to combine the beams emitted by two LDs. This system achieves stable optical characteristics with any conventional scanning optical elements. We have further enhanced this system. We have determined an optimum design that includes scanning lens and have developed the Two LD Beam-crossing Light Source Unit which performs multi-beam scanning using two LDs without a prism. In this paper, we report on recent multi-beam-scanning technologies and introduce our newly developed the Two LD Beam-crossing Light Source Unit.

关键词： Light sources optical scanning systems Mirrors Prisms Monochromatic aberrations Nonimpact printing optical components optical fibers Temperature metrology Semiconductor lasers

来源：评论

学校读者我要写书评

暂无评论

Proceedings of SPIE: Intelligent systems in design and manufacturing iv

Proceedings of SPIE: Intelligent systems in design and manuf...

引用

Intelligent Systems in design and Manufactoring iv

The proceedings contains 16 articles from the conference of SPIE: Intelligent systems in design and Manufacturing iv. Topics discussed include: collaboration platform for design agility;safety by design and future developments;new expert system approach for the design of a diagnosis tool in a production plant;state observer for the aluminium reduction process;and use of knowledge-based assistant in marketing of bulk fertilizer storage plants.

关键词： Product design

来源：评论

学校读者我要写书评

暂无评论

Increasing the phased field of view of large distributed aperture telescope arrays

Increasing the phased field of view of large distributed ape...

引用

conference on current developments in Lens design and optical engineering II

作者： Sigler, RD Palmer, AL Lockheed Martin Space and Strategic Missiles (United States)

ISBN: (纸本)0819441554

There are some unique optical design considerations in the design of a distributed aperture telescope array consisting of a number of individual afocal collector telescopes and a single combining telescope. As might be expected, diffraction limited imagery over the field of view requires the correction of spherical aberration, coma, astigmatism and field curvature. However, there is an additional requirement on the design of the collectors. Coherent addition of the light from the collectors requires that the ratio of the sine of the input and output chief ray angles be essentially constant over the field of view. This output angle restriction is equivalent to requiring the collector telescopes to have a specific variation in angular magnification with field. Variation of magnification with field is, by definition, image distortion. With simple two and three mirror afocal collector telescope designs, there are insufficient design degrees of freedom to control distortion in addition to the other aberrations. In this paper, we present a modification to a three-mirror collector design that permits the image distortion to be adjusted in a controlled manner without influencing the other third order, Seidel aberrations. This modification permits a large distributed aperture telescope array to be designed that has both a simple optical form and a much larger phased (i.e. corrected) Field of view. As a design example, we investigate the effect of the distortion correcting element on the size of the achievable field of view for a 45 meter diameter distributed aperture telescope array populated with 8 meter diameter collectors.

关键词： lens design distributed aperture telescope aberration theory distortion

来源：评论

学校读者我要写书评

暂无评论

design, tolerancing and alignment of pushbroom imaging spectrometers for high response uniformity

Design, tolerancing and alignment of pushbroom imaging spect...

引用

conference on current developments in Lens design and optical engineering II

作者： Mouroulis, P Shea, JJ Thomas, DA CALTECH Jet Propuls Lab Pasadena CA 91109 USA

ISBN: (纸本)0819441554

We present a design and tolerancing approach that permits the achievement of a high degree of spatial and spectral uniformity of response from a pushbroom imaging spectrometer. Such uniformity of response is crucial for the extraction of accurate spectroscopic information from remotely sensed data. The spectrometer system example comprises two independent spectrometer modules covering the 400-2500 nm range, separated through a dichroic mirror. The relative merits of alternative approaches are briefly reviewed before concentrating on the problem of building a flight-worthy system that can approximate its design performance. The tolerancing approach requires simultaneous monitoring of many parameters, and specifically: overall image quality, spectral distortion, spectral MTF variation with field, spatial distortion, spatial MTF variation with wavelength, and slit magnification to within a small fraction of a pixel. It is shown that the wavefront error alone or even supplemented by distortion figures is insufficient for characterizing a system with high response uniformity. Tolerance values on the components and their positioning are primarily guided by the need to achieve the same magnification between the two spectrometer modules, as well as by the interferometric alignment method.

关键词： Tolerancing Spectrometers Short wave infrared radiation Beam splitters Mirrors Modulation transfer functions Distortion Image quality Point spread functions Wavefronts

来源：评论

学校读者我要写书评

暂无评论

Scintillation bit error rate reduction for free space optical communications systems

Scintillation bit error rate reduction for free space optica...

引用

conference on current developments in Lens design and optical engineering II

作者： Mayhew, LM Willebrand, H Kube, E LightPointe Commun Inc Boulder CO 80301 USA

ISBN: (纸本)0819441554

Although relatively unaffected by rain and snow, free space infrared laser optical communication systems are affected by fog and atmospheric turbulence. We have calculated the signal loss from scintillation to predict bit error rates by varying the amount of scintillation, the link distance, and system details. Increasing the number of transmitters and the effective area was predicted to improve scintillation in earlier work in this field.(1) We found that increasing both the number of transmitters and the effective receiver area greatly improved the signal loss caused by scintillation and thus, the bit error rate. For example, under high scintillation (Cn(2) = 10(-13) M,213), the four transmitter/receiver system at a link distance of 1 kin should experience a bit error rate of better than 10(-10) for a 4.0 dB loss. Under the same conditions, an identical system with only one transmitter and receiver should experience a bit error rate of 10(-1.5) (0.032 bits per second) for the same 4.0 dB loss. Increasing just the number of transmitters or the number of receivers improved the signal, but increasing both improved the signal even more than expected. In general, single beam systems should be limited to link distances less than about 600 m.

关键词： scintillation laser communications infrared bit error rate link budget

来源：评论

学校读者我要写书评

暂无评论

Safety by design & future developments

Safety by design & future developments

引用

conference on Intelligent Systems in design and Manufacturing iv

作者： Akladios, M McMullin, D Gopalakrishnan, B Becker, PE Carr, M Lobo, P Farmani, M Decker, A W Virginia Univ Morgantown WV 26506 USA

ISBN: (纸本)0819442933

With the giant leaps that technology has taken in the past few years. some professions are still largly artistic. A good example of this is the profession of design. designers produce products that are efficient, attractive. practical. but not safe. This is because most Universities around the world fail to include safety and health issues into their curriculum. To overcome that flaw, a rule-based tool was designed to assist designers in pointing out the unsafe conditions in their designs, This tool, that utilizes expert systems technologies. took five years to reach its current version. The tool is called TEXPERT. The latest version of TEXPERT underwent a number of changes and continued growth. This year's efforts resulted in the selection of a focus area and investigations into the selection of two technologies (demolition and decontamination-D&D) by which to validate the program. Validation and expansion of the rule-base continued with an emphasis on those components necessary for D&D. Research in object-oriented prototypes. determination of report-format and approach. and development of an initial visual project builder interface were also accomplished. Latest accomplishments included the development of new components. two-way interactions. and the implementation of a maintainable component database that the user interface can use to build the current library that will be available in the menu system.

关键词： safety and health knowledge-based expert systems artificial intelligence object-oriented

来源：评论

学校读者我要写书评

暂无评论

Chemical Imaging System: current status and challenges

Chemical Imaging System: Current status and challenges

引用

conference on Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VII

作者： Ifarraguerri, A Jensen, JO USA SBCCOM Edgewood Chem Biol Ctr AMSSB RRT DP Aberdeen Proving Ground MD 21010 USA

ISBN: (纸本)0819440760

The Chemical Imaging System (CIS) is a small, high-speed long-wave infrared (8 - 12 mum) imaging spectrometer which is currently under development by the United States Army. The fielded system will operate at 360 scans per second with a large format focal-plane-array. The CIS, which is currently at the exploratory development stage, is scheduled for transition to engineering development in 2005. currently, the CIS uses the TurboFT FTS in conjunction with a 16-pixel direct-wired HgCdTe detector array. The TurboFT spectrometer provides high-speed operation in a small, lightweight package. In parallel to the hardware developments an algorithm and software development effort is underway to address some unique features of the CIS. The TurboFT-based system requires a non-uniform sampling Fourier transform algorithm in order to preserve signal fidelity. Also, the availability of multiple pixels can be exploited in order to improve the interference suppression capabilities of the system by allowing the detection and identification algorithm to adapt its parameters to the changing background. Due to the enormous amount of data generated, the signal processing must proceed at very high rate. High-speed computers operating with a parallel architecture are required to process the data in real time. This paper describes the current CIS "bread box" system. It includes some field measurement results followed by a discussion of the issues and challenges associated with meeting the design goals set for the program.

关键词： Chemical Imaging System imaging spectrometer TurboFT vapor detection

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64页 << < 40 41 42 43 44 45 46 47 48 49 > >>

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：