Other companies such as Light Blue Optics has also tinkered with head-up displays for rear-view or wing mirrors as well as windshields, including a nifty holographic version.
其他的一些公司，如浅蓝光学(Light Blue Optics)也在用平行显示来改进车辆的后视镜以及挡风玻璃，包括一个一流的全息版本的产品。
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An important problem in applied optics is the design of an optical processing system composed of a series of holographic lenses for the purpose of realizing an arbitrary transformation.