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Analysis on Effect of Birefringence in an Image Forming Lens of a Laser Scan Unit on Optical Characteristics

[+] Author Affiliations
Wan-Chin Kim

Honam University, Gwangsan-gu, Republic of Korea

Won-Young Cho

Samsung Electronics Co. Ltd, Suwon, Korea

Paper No. ISPS2017-5419, pp. V001T08A002; 3 pages
doi:10.1115/ISPS2017-5419
From:
  • ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
  • ASME 2017 Conference on Information Storage and Processing Systems
  • San Francisco, California, USA, August 29–30, 2017
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-5810-3
  • Copyright © 2017 by ASME

abstract

In most cases of molding process with glass or optical polymer, it is inevitable to avoid birefringence arisen due to residual internal mechanical stress in a molded material. Even though distribution of the residual stress can be annealed by slow cooling, it has a disadvantage on shape accuracy and manufacturing time. This study mainly analyzes variation in optical performance considering optical phase delay and difference in orientation angles between two principal optical axes due to birefringence. And the simulated optical characteristics are compared with experimental spot profiles from the image forming lens of a laser scan unit, which has specific degree of generation of birefringence. Through this study, we are going to clarify birefringence condition of the image forming lens for a LSU (Laser Scan Unit) to induce degradation in optical performance.

Copyright © 2017 by ASME

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