器件本身是类似于光传感器的简单电子元件。
The devices themselves are simple electronic components similar to a photo sensor.
光学元件，光源装置，光头装置以及光信息处理装置。
Optical element, light source device, optical head device and optical information processing unit.
光学元件，光源装置，光头装置以及光信息处理装置。
Optical element, light source device, optical head device and optical information processing unit.
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