Ms. Li Rong Profile

Li Rong

at Beijing Institute of Technology

SPIE Involvement:

Author

Publications (2)

Proceedings Article | 23 August 2013 Paper

Design of an optical system with large depth of field using in the micro-assembly

Rong Li, Jun Chang, Zhi-jing Zhang, Xin Ye, Hai-jing Zheng

Proceedings Volume 8911, 89110N (2013) https://doi.org/10.1117/12.2034559

KEYWORDS: Microscopes, Optical design, Wavefronts, Imaging systems, Optical imaging, Zoom lenses, 3D image processing, Digital image processing, Microelectromechanical systems, Monochromatic aberrations

Read Abstract +

Micro system currently is the mainstream of application and demand of the field of micro fabrication of civilian and national defense. Compared with the macro assembly, the requirements on location accuracy of the micro-assembly system are much higher. Usually the dimensions of the components of the micro-assembly are mostly between a few microns to several hundred microns. The general assembly precision requires for the sub-micron level. Micro system assembly is the bottleneck of micro fabrication currently. The optical stereo microscope used in the field of micro assembly technology can achieve high-resolution imaging, but the depth of field of the optical imaging system is too small. Thus it’s not conducive to the three-dimensional observation process of the micro-assembly. This paper summarizes the development of micro system assembly at home and abroad firstly. Based on the study of the core features of the technology, a program is proposed which uses wave front coding technology to increase the depth of field of the optical imaging system. In the wave front coding technology, by combining traditional optical design with digital image processing creatively, the depth of field can be greatly increased, moreover, all defocus-related aberrations, such as spherical aberration, chromatic aberration, astigmatism, Ptzvel(field) curvature, distortion, and other defocus induced by the error of assembling and temperature change, can be corrected or minimized. In this paper, based on the study of theory, a set of optical microscopy imaging system is designed. This system is designed and optimized by optical design software CODE V and ZEMAX. At last, the imaging results of the traditional optical stereo microscope and the optical stereo microscope applied wave front coding technology are compared. The results show that: the method has a practical operability and the phase plate obtained by optimized has a good effect on improving the imaging quality and increasing the depth of field.

Proceedings Article | 26 November 2012 Paper

off-axis three-mirror zoom system perturbation analysis

Jiao Ouyang, Jun Chang, Lifei Zhang, Aman Wei, Benlan Shen, Rong Li

Proceedings Volume 8557, 85571G (2012) https://doi.org/10.1117/12.999553

KEYWORDS: Zoom lenses, Mirrors, Reflectivity, Aberration theory, Computing systems, Monochromatic aberrations, Optical design, Optical alignment, Chromatic aberrations, Remote sensing

Read Abstract +

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years