Research on low-polarizing x-plate for LED projector using green phosphors

Yu Jen Chen, Meng Chi Li, Chien Cheng Kuo, June Jei Huang, Cheng Chung Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We have designed and fabricated the low-polarizing X-plate to increase the luminous throughput for LED projector. We calculate reflectivity characteristic of X-plate as a function of the wavelength at different angles of incidence from air of unpolarized light. A new way to design filter to control the title effect of thin film filters. The wavelength shift of the new design for reflected red filter and reflected blue filter at the angle of 45° ± 8° is 16 nm and 14 nm, respectively.

Original languageEnglish
Title of host publicationAdvances in Optical Thin Films IV
StatePublished - 2011
EventAdvances in Optical Thin Films IV - Marseille, France
Duration: 5 Sep 20117 Sep 2011

Publication series

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


ConferenceAdvances in Optical Thin Films IV


  • Green phosphor
  • LED projector
  • Low-polarizing x-plate


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