Diffractive distortion of holographic displays with inclined illumination

Cheng Ta Mu, Cheng-Huan Chen

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


Spatial light modulator is the key component for dynamic computer generated hologram (CGH) and phase type liquid crystal on silicon (LCoS) device is among the most commercialized. Due to the consideration on efficiency or the requirement from system architecture in the holographic displays, the reconstruction illumination could obliquely incident on the LCoS, which will cause distortion of signal window, hence the image within the signal window. Therefore, the target image needs pre-distortion before the calculation and optimization for the corresponding phase pattern on LCoS in order to obtain the originally desired pattern. This paper illustrates the mechanism of image distortion and provides quantitative analysis for arbitrary azimuthal and radial angle of reconstruction illumination on LCoS device. The required correction is also derived with the corresponding experiment showing the effectiveness of the proposed scheme.

Original languageEnglish
Title of host publicationAdvances in Display Technologies XI
EditorsJiun-Haw Lee, Qiong-Hua Wang, Tae-Hoon Yoon
ISBN (Electronic)9781510642515
StatePublished - Mar 2021
EventAdvances in Display Technologies XI 2021 - Virtual, Online, United States
Duration: 6 Mar 202111 Mar 2021

Publication series

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


ConferenceAdvances in Display Technologies XI 2021
Country/TerritoryUnited States
CityVirtual, Online


  • diffractive
  • distortion
  • Holographic displays
  • spatial light modulators


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