使用全彩全息光学元件的用于全息显示的超薄相干背光源单元。

Slim coherent backlight unit for holographic display using full color holographic optical elements.

作者信息

Kim Sun Il, Choi Chil-Sung, Morozov Alexander, Dubynin Sergey, Dubinin German, An Jungkweun, Lee Sung-Hoon, Kim Young, Won Kanghee, Song Hoon, Lee Hong-Seok, Hwang Sungwoo

出版信息

Opt Express. 2017 Oct 30;25(22):26781-26791. doi: 10.1364/OE.25.026781.

DOI:10.1364/OE.25.026781

PMID:29092163

Abstract

The coherent backlight unit (BLU) using a holographic optical element (HOE) for full-color flat-panel holographic display is proposed. The HOE BLU consists of two reflection type HOEs that change the optical beam path and shape by diffraction. The illumination area of backlight is 150 mm x 90 mm and the thickness is 10 mm, which is slim compared to other conventional coherent backlight units for holographic display systems. This backlight unit exhibits a total efficiency of 8.0% at red (660 nm), 7.7% at green (532 nm), and 3.2% at blue (460 nm) using optimized recording conditions for each wavelength. As a result, we could get a bright full color hologram image.

摘要

提出了一种用于全彩平板全息显示的采用全息光学元件（HOE）的相干背光源单元（BLU）。该HOE BLU由两个反射型HOE组成，它们通过衍射改变光束路径和形状。背光源的照明面积为150毫米×90毫米，厚度为10毫米，与用于全息显示系统的其他传统相干背光源单元相比更薄。使用针对每个波长优化的记录条件，该背光源单元在红色（660纳米）处的总效率为8.0%，在绿色（532纳米）处为7.7%，在蓝色（460纳米）处为3.2%。结果，我们能够获得明亮的全彩全息图像。