Defocused optical system for analyzing dust defects in imaging capturing module

Yi Ju Wu, Li Yin Chen*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dust defect is always a critical issue to degrade image qualities in kinds of imaging capturing modules, such as compact camera modules (CCMs) and digital single lens cameras (DSLRs). Dust particle may be deposited on the surface of lens or sensor in the step of assembly and even in the step of changing lens module by users. There have been lots of studies about image defects produced by dust particles on the surface of lens or sensor and the image compensation for dust defect on images, but the studies about the direct analysis of dust defects are still deficient. In this study, geometrical optics was used to analyze the image defects due to dust in the imaging capturing module. A defocused optical system with a planar light source with Lambertian emission was developed to analyze dust defect with image process and the concept of just noticeable difference (JND) of human vision. The proposed defocused optical system provides a way to help manufacturers to improve their production line efficiently.

Original languageEnglish
Title of host publicationOptical Modeling and Performance Predictions X
EditorsMarie B. Levine-West, Catherine D. Merrill, Mark A. Kahan
PublisherSPIE
ISBN (Electronic)9781510620575
DOIs
StatePublished - 2018
EventOptical Modeling and Performance Predictions X 2018 - San Diego, United States
Duration: 22 Aug 201823 Aug 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10743
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Modeling and Performance Predictions X 2018
CountryUnited States
CitySan Diego
Period22/08/1823/08/18

Keywords

  • CCM
  • Compact camera module
  • Digital single-lens reex camera
  • DSLR
  • dust defect
  • image process

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  • Cite this

    Wu, Y. J., & Chen, L. Y. (2018). Defocused optical system for analyzing dust defects in imaging capturing module. In M. B. Levine-West, C. D. Merrill, & M. A. Kahan (Eds.), Optical Modeling and Performance Predictions X [107430T] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10743). SPIE. https://doi.org/10.1117/12.2320162