中国科学院机构知识库网格系统: 检索

Optical design and implementation of a compact and long focal length imaging system 期刊论文 OAI收割
OPTICS AND LASERS IN ENGINEERING, 2023, 卷号: 163
作者: Zhong, Yue; Chang, Jun; Zhao, Xuehui; Du, Shan; Mu, Yu

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收藏 | 浏览/下载：32/0 | 提交时间：2023/02/22

All-spherical systems Long focal length Optical design

Design of a long focal length mid-wavelength infrared optical system 会议论文 OAI收割
Nanjing, PEOPLES R CHINA, 2017-10-24
作者: Duan Jing; Zhang Zhanpeng; Liu Kai; Shan Qiusha; Jiang Kai

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收藏 | 浏览/下载：43/0 | 提交时间：2018/07/05

Long Focal Length Optical Design Infrared Technology Refractive Structure

Planar binary-phase lens for super-oscillatory optical hollow needles 期刊论文 OAI收割
Scientific Reports, 2017, 卷号: 7
作者: Chen, Gang; Wu, Zhixiang; Yu, Anping; Zhang, Kun; Wu, Jing

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收藏 | 浏览/下载：43/0 | 提交时间：2018/11/20

DIFFRACTION-FREE BEAMS LONG FOCAL LENGTH POLARIZED-LIGHT NONDIFFRACTING BEAMS GENERATION AMPLITUDE BESSEL CREATION OPTIMIZATION MODULATION

Creation of Sub-diffraction Longitudinally Polarized Spot by Focusing Radially Polarized Light with Binary Phase Lens 期刊论文 OAI收割
SCIENTIFIC REPORTS, 2016, 卷号: 6
作者: Yu, An-ping; Chen, Gang; Zhang, Zhi-hai; Wen, Zhong-quan; Dai, Lu-ru

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收藏 | 浏览/下载：42/0 | 提交时间：2018/06/14

Super-oscillatory Lens Long Focal Length Modulation Generation Amplitude Optimization Microscope Needles Beams Field

Generation of a sub-diffraction hollow ring by shaping an azimuthally polarized wave 期刊论文 OAI收割
SCIENTIFIC REPORTS, 2016, 卷号: 6
作者: Chen, Gang; Wu, Zhi-Xiang; Yu, An-ping; Zhang, Zhi-hai; Wen, Zhong-quan

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收藏 | 浏览/下载：43/0 | 提交时间：2018/06/14

Super-oscillatory Lens Cylindrical-vector Beams Long Focal Length Phase Modulation Far-field Light Amplitude Binary Spot Superresolution

Design of the real-time autofocusing system for collimator with long focus length and large aperture (EI CONFERENCE) 会议论文 OAI收割
2011 International Academic Conference on Numbers, Intelligence, Manufacturing Technology and Machinery Automation, MAMT 2011, December 24, 2011 - December 25, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：42/0 | 提交时间：2013/03/25

Large aperture collimator which has been widely used for calibrating and testing various optical devices plays an essential role in correlative laboratories. As being the basic testing and calibration equipment the large aperture collimator's accuracy should be much higher than the device under testing in order to ensure the accuracy of the measurement. However the process of adjusting the collimator is extremely complicated due to the collimator's large aperture and long focal length. So it is difficult to ensure the measurement's quality and easy to cause the system being vulnerable to the surrounding environment. One of the most common problems is defocus. In order to solve the problem above this issue presents a new type of autocollimator autofocusing system which uses pentaprism instead of using large-aperture plane mirror semiconductor lasers as light source and CCD sensor as receiver. The system is smaller lighter and more convenient when using. The computer simulation shows that the autofocusing system's resolution could reach the accuracy of 40m. If we use the relevant algorithms to execute the sub-pixel scanning the resolution could reach the accuracy of 10m. It shows that the system could satisfy the required testing precision of testing large aperture optical device.

Design of reimaging F/1.0 long-wavelength infrared optical system (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

A reimaging F/1.0 long-wavelength infrared optical system is proposed. The design has a flexible opto-mechanical layout. The design process is as follows. Firstly the catadioptric reimaging system consists of two reflecting mirrors and a relay lenses. Two reflecting mirrors make up of the first imaging system and are therefore free of chromatic aberrations while low dispersion lenses were used in the reimaging system so the optical system do not need achromatic design for a high image quality. Then to correct high-order aberrations resulting from large relative aperture more parameters need to be used with aspheric or diffractive surfaces due to modern optic technology development. Here aspheric is selected for easily manufacture. Finally the design is completed with the help of ZEMAX software. The effective focal length of the objective is 120mm and the field of view (FOV) is 4. The simulated final design shows adequate image quality and the modulation transfer function (MTF) is close to diffraction limit. The effect of the surrounding environmental temperature is analyzed using the concept of thermal defocusing and the thermal compensation is discussed. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Long focal length large-aperture switch-zoom system design 会议论文 OAI收割
international symposium on photoelectronic detection and imaging 2011: advances in imaging detectors and applications, beijing, china, may 24, 2011 - may 26, 2014
WangYan-Bin; DuanJing; JinHu-Min; JiangKai; ZhangHeng-Jin

收藏 | 浏览/下载：27/0 | 提交时间：2012/07/09

long focal length large-aperture switch-zoom NA Optical design

Dynamic closed-loop test for real-time drift angle adjustment of space camera on the Earth (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: Xu S.; Wang D.

收藏 | 浏览/下载：35/0 | 提交时间：2013/03/25

In order to eliminate the influence of aircraft attitude angle to the image quality of space camera and assure that the drift angle of space camera could be accurately adjusted at the orbit a novel closed-loop test method is provided for real-time drift angle adjustment of space camera on the Earth. A long focal length dynamic aim generator is applied to simulate the image motion and the variety drift angle and to detect the precision of the image motion compensation machinery and the capability of the drift angle control system. The computer system is used to control the dynamic aim generator accomplish the data processing transmit and receive the data information. The seamless connection and the data transmission between the aim generator and the aircraft simulation devices are constituted. The command parameter and drift angle data transmitted by the simulation devices are received by the space camera at the real time then the photos are taken and the draft angle is adjusted simultaneously. It is shown that the drift angle can be accurately tracked by the space camera at the real time and the detective method satisfies the test requirement. 2010 Copyright SPIE - The International Society for Optical Engineering.

Manufacture for ruling concave metal grating with a long focal length (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Gao J.-X.

收藏 | 浏览/下载：70/0 | 提交时间：2013/03/25

The ruling technique for concave metal grating with long curvature radius (namely long focal length) is studied. In order to rule the concave grating with a long focal length the diamond carriage with elastic thimble mode is designed and manufactured. It is available not only to rule plane grating but to concave grating with a long focal length. The mathematic expression between the curvature radius of circular arc cutting edge of ruling tools for grating and the curvature radius of concave grating the caliber of grating and the size of transverse direction of bit tool are given. The span of curvature radius of circular arc cutting edge is analyzed theoretically. The concave metal grating with 30m curvature radius for 10.6m laser system is manufactured. The testing result shows that the quality of groove is perfect and the diffraction efficiency is more than 95.6 percent. 2010 IEEE.