Modeling and analysis of transmission optical centering device

Te Tan Liao*, Shih Hung Chen, Jing Fung Lin, Chun Ta Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The image quality of an optical system is limited not only by its inherent design aberrations, but also by the fabrication and assembly errors of its elements. Any small decentration error of an optical lens has a significant effect on the quality of the image it produces. In this paper, a simple method which employs skew ray tracing is described for calculating the decentration error resulting from the surface tilt of a measured optical lens by using transmission optical centering device. We address two important topics: (1) the decentration error and the spot circle radius are related by a linear approximation when the decentration error is small; and (2) an approximate value of the decentration error can be obtained by taking the first-order differentiation of the mathematical expression for the decentration error when the surface angle of tilt is small.

Original languageEnglish
Pages (from-to)67-80
Number of pages14
JournalTransactions of the Canadian Society for Mechanical Engineering
Issue number1
Publication statusPublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering


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