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	Influence and optimization of CCOS processing path to surface errors 会议论文 OAI收割 Chengdu, China, June 26, 2018 - June 29, 2018 作者: Cai, Faming; Wan, Yongjian; Liu, Haitao; Han, Xiaolei; Zhang, Rongzhu \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2021/05/06 Optical fabrication Computer Controlled Optical Surfacing Middle spatial frequency errors locally random path
	High-performance etching of multilevel phase-type Fresnel zone plates with large apertures 期刊论文 OAI收割 Optics Communications, 2018, 卷号: 407, 页码: 227-233 作者: Guo, C. L.; Zhang, Z. Y.; Xue, D. L.; Li, L. X.; Wang, R. Q. \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2019/09/17 Fresnel zone plate Diffractive optical elements Etching depth uniformity Ion beam etching Dwell time algorithm dwell-time algorithm dielectric gratings fabrication errors x-ray ion Optics
	Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：39/0 \| 提交时间：2013/03/25 A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome which demanded gimbal point coincide with the center of the dome exactly. In fact gimbal point displacement could not be eliminating due to fabrication assembly and vibration therefore the optical axis pointing error generated. In this paper the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed and the theoretical expression of the optical axis pointing error was derived based on geometric optics and the error dynamics was explored by numerical. Take a visible light image seeker as a case the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore with the gimbal displacement increasing the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range which had to be limited strictly in the gimbal design process. 2011 IEEE.
	Novel resistance iterative algorithm for CCOS (EI CONFERENCE) 会议论文 OAI收割 Current Developments in Lens Design and Optical Engineering VII, August 14, 2006 - August 15, 2006, San Diego, CA, United states 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：63/0 \| 提交时间：2013/03/25 CCOS (Computer Control Optical Surfacing) technology is widely used for making aspheric mirrors. For most manufacturers dwell time algorithm is usually employed to determine the route and dwell time of the small tools to converge the errors. In this article a novel damp iterative algorithm is proposed. We chose revolutions of the small tool instead of dwell time to determine fabrication stratagem. By using resistance iterative algorithm we can solve these revolutions. Several mirrors have been manufactured by this method all of them have fulfilled the demand of the designers a 1m aspheric mirror was finished within 3 months.