Multi-user autostereoscopic display based on direction-controlled illumination using a slanted cylindrical lens array
Multi-user autostereoscopic display based on direction-controlled illumination using a slanted cylindrical lens array
复制标题
基于使用倾斜柱面透镜阵列的方向控制照明的多用户自动立体显示
DOI：
10.1117/12.2042474
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发表时间：
2014
期刊：
影响因子：
3.2
通讯作者：
Hiroyuki Yoshida
中科院分区：
文献类型：
--
作者：
D. Miyazaki;Yui Hashimoto;Takahiro Toyota;Kenta Okoda;T. Okuyama;T. Ohtsuki;A. Nishimura;Hiroyuki Yoshida
本研究旨在开发一种满足实际使用条件的自动立体显示器，如与普通电视显示设备相媲美的高分辨率和大图像尺寸，任意观看位置，多个观看者可用性，抑制非均匀亮度分布，以及紧凑的系统配置。在所提出的系统中，用方向控制照明单元照亮图像显示单元，该照明单元由空间调制平行光源和转向光学系统组成。转向光学系统由倾斜圆柱阵列和垂直扩散器构成。方向控制照明单元可以控制垂直漫射光的输出位置和水平角度。控制来自图像显示单元的光形成狭窄的出口瞳孔。只有当眼睛位于出瞳处时，观看者才能看到图像。自动立体视图可以通过交替切换观众双眼的出瞳位置，并交替显示视差图像来实现。建立了一个实验系统来验证所提出的方法。实验系统由LCD投影仪和菲涅耳透镜组成，用于定向照明单元，32英寸全高清LCD用于图像显示。
This research aims to develop an auto-stereoscopic display, which satisfies the conditions required for practical use, such as, high resolution and large image size comparable to ordinary display devices for television, arbitrary viewing position, multiple viewer availability, suppression of nonuniform luminance distribution, and compact system configuration. In the proposed system, an image display unit is illuminated with a direction-controlled illumination unit, which consists of a spatially modulated parallel light source and a steering optical system. The steering optical system is constructed with a slanted cylindrical array and vertical diffusers. The direction-controlled illumination unit can control output position and horizontal angle of vertically diffused light. The light from the image display unit is controlled to form narrow exit pupil. A viewer can watch the image only when an eye is located at the exit pupil. Auto-stereoscopic view can be achieved by alternately switching the position of an exit pupil at viewer's both eyes, and alternately displaying parallax images. An experimental system was constructed to verify the proposed method. The experimental system consists of a LCD projector and Fresnel lenses for the direction-controlled illumination unit, and a 32 inch full-HD LCD for image display.