你还可以创建一个环境光源以产生无方向性的光，或者点光源，如果你想对你场景中的特定区域聚焦。

You can also create an AmbientLight which will produce a directionless light, or a SpotLight if you want to focus on a particular part of your scene.

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最后，为了消除CG效果图的虚假感，我们为所有图片增加一些色差，一些细微的装饰图案，以及光源上的一些光点和耀斑。

As final touches, aimed to eliminate some "fake CG looks", we added to all the images some chromatic aberration, a very subtle vignette, a few glows and some flare effects on the light source.

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利用一点光源和一束倾斜平行光拍摄了一种离轴全息透镜，并对其傅里叶变换特性进行了分析。

The Fourier transform characteristics of off-axis hololens was discussed, which was made by using a dot light source and an inclined parallel light.

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