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Aerial LED signage by use of crossed-mirror array

机译：使用交叉镜阵列的空中LED标牌

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3D representation of digital signage improves its significance and rapid notification of important points. Real 3D display techniques such as volumetric 3D displays are effective for use of 3D for public signs because it provides not only binocular disparity but also motion parallax and other cues, which will give 3D impression even people with abnormal binocular vision. Our goal is to realize aerial 3D LED signs. We have specially designed and fabricated a reflective optical device to form an aerial image of LEDs with a wide field angle. The developed reflective optical device composed of crossed-mirror array (CMA). CMA contains dihedral corner reflectors at each aperture. After double reflection, light rays emitted from an LED will converge into the corresponding image point. The depth between LED lamps is represented in the same depth in the floating 3D image. Floating image of LEDs was formed in wide range of incident angle with a peak reflectance at 35 deg. The image size of focused beam (point spread function) agreed to the apparent aperture size.
机译：数字标牌的3D表示提高了其重要性并可以快速通知要点。诸如体积3D显示器之类的真实3D显示技术对于将3D用于公共标志非常有效，因为它不仅提供了双眼视差，而且还提供了运动视差和其他暗示，即使是双眼视觉异常的人也可以给3D印象。我们的目标是实现空中3D LED标志。我们专门设计和制造了一种反射光学器件，以形成具有宽视场角的LED的航拍图像。开发的反射光学器件由交叉镜阵列（CMA）组成。 CMA在每个孔处都包含二面角反射器。经过两次反射后，LED发出的光线会聚到相应的图像点。 LED灯之间的深度在浮动3D图像中以相同深度表示。 LED的浮动图像在宽的入射角范围内形成，峰值反射率为35度。聚焦光束的图像大小（点扩散函数）与视在孔径大小一致。

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