中国科学院机构知识库网格系统: 检索

PIM-Align: A Processing-in-Memory Architecture for FM-Index Search Algorithm 期刊论文 OAI收割
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2021, 卷号: 36, 期号: 1, 页码: 56-70
作者: Li, Xue-Qi; Tan, Guang-Ming; Sun, Ning-Hui

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收藏 | 浏览/下载：39/0 | 提交时间：2021/12/01

accelerator design genomic sequence alignment near-memory computing

Construction and simulation bias study of the guide Tube Calibration System for JUNO 期刊论文 OAI收割
JOURNAL OF INSTRUMENTATION, 2021, 卷号: 16, 期号: 7
作者: Guo, YH; Zhu, KF; Zhang, QM; Zhang, FY; Meng, Y

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收藏 | 浏览/下载：25/0 | 提交时间：2023/03/27

Overall mechanics design (support structures and materials vibration analysis etc) Detector design and construction technologies and materials Detector alignment and calibration methods (lasers sources particle-beams) Detector control systems (detector and experiment mon-itoring and slow-control systems architecture hardware algorithms databases)

Relative coordinates constraint for face alignment 期刊论文 OAI收割
NEUROCOMPUTING, 2020, 卷号: 395, 页码: 119-127
作者: Nian, Fudong; Li, Teng; Bao, Bing-Kun; Xu, Changsheng

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收藏 | 浏览/下载：45/0 | 提交时间：2020/06/22

Face alignment Relative coordinates constraint CNN Loss function design

Convex blazed grating of high diffraction efficiency fabricated by swing ion-beam etching method 期刊论文 OAI收割
Optics Express, 2018, 卷号: 26, 期号: 19, 页码: 25381-25398
作者: Shen, C.; Tan, X.; Jiao, Q. B.; Zhang, W.; Wu, N.

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收藏 | 浏览/下载：25/0 | 提交时间：2019/09/17

imaging spectrometer hyperspectral imager ultraviolet algorithm alignment design Optics

Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文 OAI收割
Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states
作者: Zhang F.; Wang L.; Wang L.; Wang L.; He X.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

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. 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. 2012 SPIE.

The design of analog video data grabber system based on TMS320VC33 and SAA7111A (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者: Liu S.-J.

收藏 | 浏览/下载：15/0 | 提交时间：2013/03/25

Analog video data grabber system based on TMS320VC33 and SAA7111A is proposed for a kind of automatic optical alignment measuring device. System uses the enhanced video processing chip SAA7111A to complete A/D conversion. The function of SAA7111A and the register configuration method of I2C Bus are introduced in the paper. System uses FPGA to control video data grabber and collaborative work of DSP. DSP processes video data. The paper gives design method of hardware and software. Experimental results indicate that the system can satisfy the requirements. 2011 IEEE.

The optical design of cubic phase plate testing system (EI CONFERENCE) 会议论文 OAI收割
2011 Symposium on Photonics and Optoelectronics, SOPO 2011, May 16, 2011 - May 18, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Zhang X.; Zhang Y.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

Computer-generated holograms (CGH) have been widely used for years in optical testing of aspheric surfaces in combination with Fizeau interferometers. With the development of diffraction optics computer technology and micro-processing technology the accuracy of the CGH testing can achieve a hundredth of a wave and the cost is reduced greatly. CGH is capable of producing an optical wavefront with any desired shape. So it is fascinating and will have good prospects to test free-form surfaces using CGH. As the CGH can create any wavefront shape it can also be used in unsymmetrical aspherical surfaces testing. Taking the cubic surface as an example this paper gives a method to test unsymmetrical surfaces. This paper gives the design to test a cubic surface. And the separation of the diffraction orders and the binary process of the continuous CGH phase function are discussed in detail. The alignment tolerance of the test system and the CGH fabrication tolerance are analyzed. We also present an idea using a CGH and two spherical lenses as null lens to test the cubic surface when the surface deviation is great. 2011 IEEE.

Design and fabrication of CGH for aspheric surface testing and its experimental comparison with null lens (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhao J.; Zhang X.; Zhang X.; Zhang X.; Li F.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

Computer-generated hologram (CGH) is an effective way to compensate wavefront in null test of aspheric surfaces and freeform surfaces. Our strategies of CGH design and fabrication for optical testing are presented and an experiment demonstrating the compensation results of CGH and null lens is also reported. In order to design complex CGH software was developed with which we can design a CGH including three sections: main section for compensating wavefront in null test alignment section for adjusting the relative position between CGH and interferometer and fiducial section for projecting fiducial marks around the optics under test. The design result is represented in GDS II format file which could drive a laser-direct-writer- machine to fabricate a photomask. Then a 1:1 replication process is applied to duplicate the patterns from photomask to a parallel optical substrate whose surface is error better than /60 rms. Finally an off-axis aspheric surface was tested with CGH and null lens respectively. The test result with CGH (0.019rms) is almost the same as the result with null lens (0.020 rms). This experiment also demonstrated that fiducial marks projected by CGH can be used to guide the alignment of the optics and measurement of its off-axis distance. 2010 Copyright SPIE - The International Society for Optical Engineering.

Alignment of off-axis asphere and compensator with four poles (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Li J.; Chen Y.; Li J.; Li J.; Wang P.

收藏 | 浏览/下载：59/0 | 提交时间：2013/03/25

Aspheres are utilized widely thanks to the development of optical design manufacture and testing. Compensators are usually necessary when aspheres are under test. The alignment of aspheres and their compensators is a risk because it's tough to check whether the compensators work in right way. A new method of alignment with four poles is put forward in this paper. Optical interval error can be tight while it is quite important due to direct influence on central curvature conic constant and high order coefficients of aspherical surface. A modified on-axis Foucault apparatus is set up since it makes the optical axis visible and helps to control the error of off-axis amount. Some small holes are drilled in the metallic cell of the compensator so that the ends of poles can be stably relied on in order to increase operational repeatability. The method has been carried out practically and it matches the measurement result given by a set of theodolites. 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.