在荧光素酶中加入正确的荧光素底物就可以放出荧光，而发出的光子可以被光敏感元件，如荧光探测器或改进后的光学显微镜探测到。
Light is emitted when luciferase is exposed to the appropriate luciferin substrate. Photon emission can be detected by light sensitive apparatus such as a luminometer or modified optical microscopes.
在闭塞传感器的光学元件执行透过手指传送的光敏感测量。
During the occlusion optical elements in the sensor perform a sensitive measurement of the light transmitted through the finger.
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