We present StainedView, an optical see-through display that spatially filters the spectral distribution of light to form an image with improved color fidelity. Existing light-attenuation displays have limited color fidelity and contrast, resulting in a degraded appearance of virtual images. To use these displays to present virtual images that are more consistent with the real world, we require three things: intensity modulation of incoming light, spatial color filtering with narrower bandwidth, and appropriate light modulation for incoming light with an arbitrary spectral distribution. In StainedView, we address the three requirements by cascading two phase-only spatial light modulators (PSLMs), a digital micromirror device, and polarization optics to control both light intensity and spectrum distribution. We show that our design has a 1.8 times wider color gamut fidelity (75.8% fulfillment of sRGB color space) compared to the existing single-PSLM approach (41.4%) under a reference white light. We demonstrated the design with a proof-of-concept display system. We further introduce our optics design and pixel-selection algorithm for the given light input, evaluate the spatial color filter, and discuss the limitation of the current prototype.

中文翻译：

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StainedView：具有级联空间色彩过滤功能的可变强度光衰减显示器，可提高色彩保真度。

我们展示了StainedView，这是一种光学透明显示器，可在空间上过滤光的光谱分布，以形成具有更高色彩保真度的图像。现有的光衰减显示器具有有限的色彩保真度和对比度，导致虚像的外观下降。为了使用这些显示来呈现与现实世界更加一致的虚拟图像，我们需要三件事：入射光的强度调制，带宽更窄的空间颜色过滤以及对具有任意光谱分布的入射光进行适当的光调制。在StainedView中，我们通过级联两个仅相位空间光调制器（PSLM），一个数字微镜设备和偏振光学来控制光强度和光谱分布，从而满足这三个要求。我们证明我们的设计有一个1。在参考白光下，其色域保真度（现有sRGB色彩空间的75.8％）是现有单PSLM方法（41.4％）的8倍。我们用概念验证显示系统演示了该设计。我们进一步介绍给定光输入的光学设计和像素选择算法，评估空间滤色镜，并讨论当前原型的局限性。