title: Geometrical optics analysis of the structural imperfection of retroreflection corner cubes with a nonlinear conjugate gradient method.
abstract: Geometrical optics analysis of the structural imperfection of retroreflection corner cubes is described. In the analysis, a geometrical optics model of six-beam reflection patterns generated by an imperfect retroreflection corner cube is developed, and its structural error extraction is formulated as a nonlinear optimization problem. The nonlinear conjugate gradient method is employed for solving the nonlinear optimization problem, and its detailed implementation is described. The proposed method of analysis is a mathematical basis for the nondestructive optical inspection of imperfectly fabricated retroreflection corner cubes.
authors.affiliation: 1School of Electrical Engineering, Seoul National University, Gwanak-Gu Shinlim-Dong, Seoul 151-744, Korea.
authors.forename: Hwi
authors.initials: H
authors.lastname: Kim
authors.forename: Sung-Wook
authors.initials: SW
authors.lastname: Min
authors.forename: Byoungho
authors.initials: B
authors.lastname: Lee