Title :
Curved imaging of Fresnel computer-generated hologram on a liquid crystal on silicon spatial light modulator
Author :
Han-Yen Tu ; Wei-Chieh Yeh ; Chau-Jern Cheng ; Chun-Yen Chang
Author_Institution :
Dept. of Electr. Eng., Chinese Culture Univ., Taipei, Taiwan
Abstract :
This work describes a multi-plane iterative algorithm to extend depth of focus (DOF) for curved image reconstruction of Fresnel computer-generated hologram (CGH) on a liquid crystal on silicon spatial light modulator (LCoS-SLM). Compared to the depth of focus in a conventional CGH, the proposed method can improve the DOF at least 2 times in the near-field image reconstruction. The property of wide depth of focus makes it possible to reconstruct the real images displayed on a curved surface. No extra lens set which is usually used in head-up display and projection display is needed. The CGH customized design is feasible and applied for various curved displays and applications.
Keywords :
computer-generated holography; elemental semiconductors; image reconstruction; liquid crystals; silicon; spatial light modulators; Fresnel computer-generated hologram; Si; curved image reconstruction; depth of focus; head-up display; liquid crystal; multi-plane iterative algorithm; projection display; silicon spatial light modulator; Adaptive optics; Holographic optical components; Holography; Image reconstruction; Optical imaging; Surface reconstruction;
Conference_Titel :
Active-Matrix Flatpanel Displays and Devices (AM-FPD), 2014 21st International Workshop on
Conference_Location :
Kyoto
DOI :
10.1109/AM-FPD.2014.6867126
