[3Dp2-3]Principle of Angular Multiplexing for Volume Holographic Gratings in Lightguide Display According to Lighting Spectrum
*Wei-Chia Su1, Shao-Kui Zhou1, Wen-Kai Lin1,2, Hung-Hui Huang1, Ching-Cherng Sun2(1. National Changhua University of Education (Taiwan), 2. National Central University (Taiwan))
Keywords:
Near-eye display,AR display,Lightguide,Volume holographic grating
Owing to the Bragg selectivity of volume holographic gratings, angular multiplexing should be implemented in a volume-holographic-grating-based lightguide display in order to obtain larger FOV images. Design principle of the angular multiplexing is presented according to the bandwidth of lighting spectrum to compensate the target image FOV. A see-through green-color image with 30o horizontal FOV is designed.