Computer-aided alignment method using RMS WFE value as an optimization criterion

2012 ◽  
Author(s):  
Yunjong Kim ◽  
Ho-Soon Yang ◽  
Yun-Woo Lee
Keyword(s):  
Optimization Criterion ◽  
Alignment Method ◽  
Computer Aided

Study on computer-aided alignment method of a three-mirror off-axis aspherical optical system

2010 ◽  
Author(s):  
Xi-ting Zhao ◽  
Wen-chun Jiao ◽  
Zhi-bo Liao ◽  
Yun Wang ◽  
Jia-yi Chen
Keyword(s):  
Optical System ◽  
Alignment Method ◽  
Computer Aided

Computer-aided alignment method in afocal compressed optical path system

2016 ◽  
Vol 37 (4) ◽  
pp. 607-611
Author(s):  
Yue Pengyuan ◽  
Zhao Xiting ◽  
Zhao Zhen ◽  
Wan Yuxi
Keyword(s):  
Optical Path ◽  
Alignment Method ◽  
Computer Aided ◽  
Path System

A Study on the Highway Alignment Method

2014 ◽  
Vol 644-650 ◽  
pp. 5009-5013
Author(s):  
Yun Wei You
Keyword(s):  
Complex Terrain ◽  
Computer Aided Design ◽  
Alignment Method ◽  
Highway Design ◽  
Existing Problems ◽  
Computer Aided ◽  
Design Software ◽  
Aided Design ◽  
Highway Alignment

By applying the model in a case, two methods of linear and curved alignment are analyzed and compared. Besides, the main existing problems and the solutions to solve them are studied. The results show that curved alignment method has obvious advantages in highway design, interchange design, and other complex terrain conditions. With a variety of computer-aided design software line appears, curved alignment method will be widely used.

Study on computer-aided alignment method

2005 ◽  
Author(s):  
Jianfeng Liu ◽  
Funian Long ◽  
Wei Zhang
Keyword(s):  
Alignment Method ◽  
Computer Aided

A New Variational Association Process for the Verification of Geometrical Specifications

2006 ◽  
Vol 7 (1) ◽  
pp. 66-71 ◽  
Author(s):  
Jean-Yves Choley ◽  
Alain Riviere ◽  
André Clement ◽  
Pierre Bourdet
Keyword(s):  
Least Squares ◽  
Computer Aided Design ◽  
Optimization Criterion ◽  
Design System ◽  
Minimax Optimization ◽  
World Scientific ◽  
Computer Aided ◽  
New Association ◽  
Reduced Modeling ◽  
Aided Design

When this new association process of a datum is performed to verify a geometrical specification, measured points are considered as perturbations which generate modifications of the nominal geometry by variation of its location, orientation, and intrinsic dimensional characteristics, without requiring rotation and translation variables as the traditional methods usually do (Bourdet, et al., 1996, Advanced Mathematical Tools in Metrology II, World Scientific) with torsors or matrices. This new association process (Choley, 2005, Ph.D. thesis, Ecole Central, Paris; Choley, et al., 2006, Advanced Mathematical and Computational Tools in Metrology, VII, World Scientific) is based on both a reduced modeling of the geometry, taken out of the computer aided design system database, and a variational distance function. The whole measured points set influence is taken into account as an optimization criterion is applied (Bourdet and Clement, 1988, Ann. CIRP 37(1), p. 503; Srinivasan, DIMACS Workshop on Computer Aided Design and Manufacturing, Rutgers University, NJ, October 7–9). Thus, the least squares optimization is achieved using the pseudo-inverse matrix, whereas the minimax optimization is treated with an algorithm developed by the Physikalisch-Technische Bundesanstalt and adapted for this purpose. In this paper, it is explained how this association process may be applied to planes and cylinders, used as single datum, datum systems, or common datum, with the least squares and minimax criteria.

Computer-aided alignment method of optical lens with high accuracy

2016 ◽  
Author(s):  
Song Xing ◽  
Xiao-hua Hou ◽  
Xue-min Zhang ◽  
Bin-dong Ji
Keyword(s):  
High Accuracy ◽  
Alignment Method ◽  
Optical Lens ◽  
Computer Aided

Computer-aided alignment method for large and complex optical systems

2000 ◽  
Author(s):  
Huilan Liu ◽  
Hongqiang Xu ◽  
Taogeng Zhou ◽  
Jun Li ◽  
Dingguo Sha
Keyword(s):  
Optical Systems ◽  
Alignment Method ◽  
Computer Aided
Sign in / Sign up

Export Citation Format

Share Document