当偏振光投射到手指上时，指纹的脊线将反射了光的一个偏振态，同时脊谷反射另一个偏振态。
When light hits a finger, the ridges of the fingerprint reflect one polarization of light, while the valleys reflect another.
采集指纹时，首先向人的手投射偏振光，然后由两个检测不同偏振态的配套摄像头来分析反射光。
It detects fingerprints by shining polarized light onto a person's hand and analyzing the reflection using two cameras configured to detect different polarizations.
但通过这方面的努力，该研究小组还考虑到了偏振光的因素。因为行星的反照光往往会出现偏振，但恒星发出的光则不会如此。
But in this effort, the research team also took into account polarized light. Because light reflected off a planet is polarized. But light from the star is not.
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