For ultra-compact near-eye display, waveguides provide a small form factor because they are thin shape plate, but projectors are too large due to the imaging sources, which results in bulky near-eye displays. Recent advances in fiber-scanning technology can overcome this limitation. Fiber-scasnning projectors produce an image by vibrating an optical fiber, and they can be small because only thin fibers and actuators are required. However, uneven brightness occurs when augmented reality images from the fiber-scanning projector are displayed using a conventional waveguide. In this paper, we propose a novel waveguide that duplicates a narrow beam by multiple reflections of a pre duplicator, which is a flat-plate-shaped optics with mirror and half-mirror surfaces. The proposed waveguide enables uniform luminance distribution with a fiber-scanning projector by providing narrow duplication intervals. We experimentally confirmed that the contrast of luminance unevenness decreased from 0.60 to 0.15 with our waveguide. Our fiber scanning projector size is less than 0.03 cc and can be placed on the temples of eyeglasses, which is impossible with general projectors of about 5 cc. Therefore, the proposed waveguide and fiber scanning projector enable the realization of eyeglasses shape near-eye displays.

对于超紧凑的近眼显示器，波导提供了小尺寸，因为它们是薄的形状板，但投影仪由于成像源太大而导致近眼显示器体积庞大。光纤扫描技术的最新进展可以克服这一限制。光纤扫描投影仪通过振动光纤产生图像，它们可以很小，因为只需要细纤维和致动器。然而，当使用传统波导显示来自光纤扫描投影仪的增强现实图像时，会出现亮度不均匀。在本文中，我们提出了一种新型波导，它通过预复制器的多次反射来复制窄光束，预复制器是一种具有镜面和半反射镜表面的平板形光学器件。所提出的波导通过提供狭窄的复制间隔，使光纤扫描投影仪能够实现均匀的亮度分布。我们通过实验证实，使用我们的波导，亮度不均匀的对比度从 0.60 降低到 0.15。我们的光纤扫描投影仪尺寸小于0.03cc，可以放在眼镜的镜腿上，这是一般5cc左右的投影仪无法做到的。因此，所提出的波导和光纤扫描投影仪能够实现眼镜形状的近眼显示器。这对于大约 5 cc 的普通投影仪是不可能的。因此，所提出的波导和光纤扫描投影仪能够实现眼镜形状的近眼显示器。这对于大约 5 cc 的普通投影仪是不可能的。因此，所提出的波导和光纤扫描投影仪能够实现眼镜形状的近眼显示器。