Date
Place
- Room H (Room Hall 1, 1F)
- P1. Poster Session I
- August 20, 2015 (Thursday)
- 14:00 ~ 15:30
- [P1-72]
- 14:00 ~ 15:30
- Title:Adaptive Optically Isotropic Liquid Crystal Micro-Lens with Fast Switching
- Ki Hoon Song, Jae Myeong Lee, Zuowei Zhou, Hongwen Ren, and Seung Hee Lee (Chonbuk Nat'l Univ., Korea)
Abstract: In this paper, we propose a novel OILC switchable lens with gradient refractive index. In the proposed OILC switchable lens, inhomogeneous droplet size distribution is achieved by ultraviolet (UV) light exposure through a lenticular film. The stronger UV light exposed area consists of smaller droplet size, while the weaker UV light exposed area has lager droplet size because of slower phase separation. The refractive index of area with large droplet size is higher than the area with small droplet size. Here, we achieved the lens performance by vertical electric field. To prepare the OILC cell, two flat indium tin oxide (ITO) substrates were attached. The cell gap is 50¥ìm and the pitch of lenticular film is 270¥ìm. Fig 1 shows charge-coupled device (CCD) intensity profile images of proposed OILC switchable lens. When 100Vrms voltage is applied, the focal length of proposed OILC lens is 5.3 cm.
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