Date

Place

[7-2]
09:25 ~ 09:50
Title:[Invited] Tunable Focusing Liquid Crystal Lenses for Augmented Reality
Yi-Hsin Lin, Po-Ju Chen, Hung-Shan Chen, and Yu-Jen Wang (Nat'l Chiao Tung Univ., Taiwan)
Abstract: Augmented reality (AR) is a technology by which users can see the real-world environment augmented by computer-generated information. Such computer-generated information is usually projected to human eyes in a form of a virtual image by AR wearable devices. However, the position of such a projected virtual image is focused in certain plane which may not coincide with the physical object. As a result, people suffer from the visual fatigue. Thus, it is required to develop electrically adaptive optical elements to register the projected virtual images to the objects in the real world. In this paper, an AR system with an electrically tunable location of a projected image is demonstrated by adopting a reflective LC lens is demonstrated. The projected image could be a virtual image or a real image. The structure of the system is in Fig. 1. By means of doubling the lens power of the LC lens in reflective operation, the position of the projected virtual image can be tuned. The concept in this paper could be further applied to other tunable focusing lenses even though the lens power is small.?
PDF Download

Type