中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页
机构
成果
学者
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
长春光学精密机械与物... [5]
上海生物化学与细胞生... [1]
采集方式
OAI收割 [6]
内容类型
会议论文 [5]
期刊论文 [1]
发表日期
2013 [1]
2011 [1]
2009 [2]
2008 [1]
2007 [1]
学科主题
Biochemist... [1]
筛选
浏览/检索结果:
共6条,第1-6条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
题名升序
题名降序
提交时间升序
提交时间降序
作者升序
作者降序
发表日期升序
发表日期降序
Characterization of the GufA subfamily member SLC39A11/Zip11 as a zinc transporter
期刊论文
OAI收割
JOURNAL OF NUTRITIONAL BIOCHEMISTRY, 2013, 卷号: 24, 期号: 10, 页码: 1697-1708
作者:
Yu, Y
;
Wu, AM
;
Zhang, ZZ
;
Yan, G
;
Zhang, F
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2015/07/22
Zinc transporter
SLC39A11/ZIP11
ZIP family
MRE
MTF-1
Zinc homeostasis
The application of diagnostic equipment in the Tokamak fusion reaction (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, November 6, 2011 - November 9, 2011, Beijing, China
Zhang B.-S.
;
Chang J.
;
Gong X.-Z.
;
Gan J.-F.
;
Feng S.-L.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
This paper introduces the infrared optical system in the Tokamak fusion reaction device. In this optical system
3.the relay group lenses. This paper describes the decrease of the modulation transfer function (MTF) when the temperature changes and how to compensate the decrease of the MTF in order to maintain the image quality in a high level. As a result
the traditional optical structure can't meet the requirements
2.the Cassegrain system
the image quality of this optical system can reach the requirements when the temperature changes. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
because the length of the infrared optical system in the Tokamak is very long. The design of optical system in the detection facility includes three parts:1.the combination of the concave aspheric mirror and flat mirror
Design of the infrared dual-band athermalized optical system based on HDE (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Zhang L.
;
Sun Q.
;
Wang H.
;
Wang H.
;
Wang H.
收藏
  |  
浏览/下载:97/0
  |  
提交时间:2013/03/25
A dual-band infrared optical system adopting an uncooled LW infrared detector and a cooled MW infrared detector is designed and manufactured
while in the LW IR band the F/# is 1 and the focal length is 114 mm
based on the athermal ability and special diffractive properties of harmonic diffractive elements. The design shows in the MW IR band the F/# is 2 and the focal length is 72 mm
for the temperature range -40 70 the MTF value is over 0.5 at 10 lp/mm. Finite element method is applied to the opto-mechanic structure of the system for thermal analysis
for the temperature range -40C 70C the MTF value is over 0.4 at 20 lp/mm
which confirms the imaging ability of the system in a wide temperature range. 2009 SPIE.
A spherical catadioptric telescope system based on Cooke corrector group (EI CONFERENCE)
会议论文
OAI收割
Novel Optical Systems Design and Optimization XII, August 3, 2009 - August 4, 2009, San Diego, CA, United states
作者:
Zhang J.
;
Liu W.
;
Zhang J.
;
Zhang J.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
To obtain a number of advantages in fabrication
testing and alignment
many designs in which spherical mirrors replace classical Cassegrain-form aspheric mirrors are present in the literature. However
spherical mirrors suffer from substantial spherical aberration and thereby require some form of corrector group. But in this case
the question encountered is that of making the basic optical configuration more complex. In this paper
a new design based on Cooke corrector group is presented for eliminating spherical aberration
which is believed to provide higher performance with less complexity than previous approaches. Besides
the cost and fabrication period will be extremely decreased. The telescope system using corrector group here can achieve good optical performance with f# of 10
full field of 0.5
obscuration of 1/3 and MTF (Modulation Transfer Function) of 0.48 corresponding to 50@lp/mm. 2009 Copyright SPIE - The International Society for Optical Engineering.
The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE)
会议论文
OAI收割
Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states
作者:
Yan F.
;
Zhang X.-J.
;
Yan F.
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/03/25
The wavefront coding technology is known as a system-level technology which can extend the depth of focus of optical system by innovative optical design and image restoration. This technology can control misfocus related aberrations including misfocus
astigmatism
and Petzval curvature
temperature-related misfocus in digital imaging systems. It can also help optical system tolerate more residual error in optical manufacturing and alignment besides misfocus. The brief introduction of wavefront coding technology and the wavefront coded TMA system under research is presented respectively in part 1 and part 2. The "MTF similarity" is defined to describe the relationship among MTF at different position or different fields in the third part. It is also shown in this part that the MTF similarity of wavefront coded system is much higher than the normal system within a large range. In part 4 comparison between the origin system and the new system with wavefront coding technology is provided after multiple errors are introduced
from which it can be observed that the system with wavefront coding technology can tolerate much bigger error than origin system. The error tolerance is re-distributed according to a new criterion based on MTF similarity. If the MTF similarity is less than a certain value
it can be regarded that the system can tolerate the residual error. The new error tolerance is displayed and it is shown that the wavefront coding technology can also loosen the error distributing besides extended the depth of focus.
Design of dual-FOV refractive/diffractive LWIR optical system (EI CONFERENCE)
会议论文
OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:
Wang L.-J.
;
Zhang J.-P.
;
Wang L.-J.
;
Zhang X.
;
Zhang X.
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2013/03/25
An infrared-optical zoom system using binary element is proposed in this paper. The two main advantages of the zoom system introducing here are: bigger F-number and lower cost. The primary optical properties are: F/#=1
Second
Others
zoom ratio =1:4
binary element is used to correct the chromatical aberration by taking the advantage of negative dispersion characteristics and the cost of the system is lower than that of conventional ones with Zinc Selenide (Znse) material at the same level. In the binary element is rotational symmetric with one step which is easy to fabricate
in order to balance 5th spherical aberration
and dual field are 26.6 and 5.6respectively. Wider field of view is used for search and the smaller one is used for imaging details. This system uses un-cooled infrared detector with 320240 pixels and 45m pixel size. The F-number matches the sensitivity range of the detector array. Three aspects are considered during design process to make the system more satisfactory and more achievable. First
5th coma aberration and 5th astigmatic aberration
the manner of zoom is accomplished by exchanging tow lenses into the smaller field of view system layout. The lens exchange manner faces the requirement of simple system structure and good image quality in both focal points. It can also make the system more feasible in the alignment process than mechanical-zooming manner and optical-zooming manner
high-order asphere surfaces with 2th order to 10 th order are also hired in the system. Asphere surface is useful in compressing the system and improving optical system transmittance. This kind asphere surface is on industrial level featuring low cost and easy to fabricate. It is shown that good image quality can achieved by implementing five Germanium lenses and the transmittance of system is 72%. All aberrations are diffraction-limited
both spherical aberration and astigmatic aberration are corrected. When the field of view(FOV) is 26.6 and the focal length is 152mm
MTF at Nyquist frequency(11lp/mm) is great than 0.7. The spherical aberration is -0.0073. The coma aberration is 0.0978 and the astigmatic aberration is -0.013. When the field of view(FOV) is 5.6 and the focal length is 38mm
MTF at Nyquist frequency is great than 0.8 with spherical aberration -0.0046
the coma aberration 0.055 and astigmatic aberration 0.034.