Near-eye holographic display device by simple optical system using HOE

Kazuya Furuta; Hideyoshi Horimai; Toshihiro Kasezawa; Yuji Sakamoto

doi:10.1117/12.2509309

1 March 2019 Near-eye holographic display device by simple optical system using HOE

Kazuya Furuta, Hideyoshi Horimai, Toshihiro Kasezawa, Yuji Sakamoto

Proceedings Volume 10944, Practical Holography XXXIII: Displays, Materials, and Applications; 1094413 (2019) https://doi.org/10.1117/12.2509309
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A Head-mounted displays (HMD) for augmented reality (AR) are researched to use work support. However, it has a fatigue problem occurred by the difference of focal length between the working space and displayed image. The technique of displaying holography using an electronic device called electro-holography are expected to solve the problem, because it is possible to display images at a free depth depending on the working position. So that, holographic HMDs for AR have been studied. But, since it is consisting optical components such as lenses, a mirror and a half mirror, the size and weight of the devise become large and heavy. On the other hand, holographic optical elements (HOE) is possible to produce functions of lens, beam splitter and diffraction grating. Also, it is possible to consolidate the functions of lenses and half mirrors into HOE. In this paper, we purpose near-eye holographic display device using HOE (Egarim-PBS made by Egarim Co., Ltd.). The Egarim-PBS is consolidated the functions of lenses, half mirrors, and optical waveguide, which are all optical components to construct the holographic HMD. So that, we can perform a simpler optical structure which is only consists of an Egarim-PBS and electronic devices. Our proposed concept was proven by experimentally. The proposed system has a potential to make holographic HMD became smaller and lighter than a conventional holographic HMD.

Citation Download Citation

Kazuya Furuta, Hideyoshi Horimai, Toshihiro Kasezawa, and Yuji Sakamoto "Near-eye holographic display device by simple optical system using HOE", Proc. SPIE 10944, Practical Holography XXXIII: Displays, Materials, and Applications, 1094413 (1 March 2019); https://doi.org/10.1117/12.2509309

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