Fabrications and applications of holographic optical elements as lens arrays based on polymer-dispersed liquid crystal cells

Abstract

In this thesis the main investigation is to fabricate holographic optical elements (HOEs) as lens arrays by means of holographic exposure of a He-Ne laser in polymer-dispersed liquid crystal (PDLC) cells The optical performance of fabricated HOEs is also measured including diffraction efficiency imaging capabilities in integral imaging system and so on The main ingredients were DPHPA photo-curable monomers and E7 liquid crystals in the PDLC cells prepared to fabricate HOEs As a result the maximum 32 5% diffraction efficiency was experimentally achieved as a reflective grating in the exposed PDLC cells By contrast it was 18 4% diffraction efficiency for the fabricated HOEs as lens arrays The fabricated HOEs as lens arrays were demonstrated the 3D imaging capabilities in the projection-type integral imaging system In addition a lot of improvements the projection-type integral imaging system were demonstrated via HOE lens arrays including no optical diffuser and usage of computer generated elemental images

Date of Award	2019
Original language	English
Supervisor	Chia-Rong Sheu (Supervisor)