光感是指仅能感知光亮而不能辨认出眼前1m处手指的晃动。多数盲人保留有光感的残余视力。
... light pollution 光污染 light sensation 光感 line image sensor 线成象敏感器 ...
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两款手表均配有蓝牙，重力感应，光感，以及可充电电池。
Both of them are loaded up with Bluetooth, an accelerometer, ambient light sensor, and a rechargeable battery.
值得一提的是，这些光感细胞也是我们的大脑能接受视觉信息的关键因素。
It is only from these cells our brain can receive detailed visual information. See image below.
为了改善激光雷达，研究人员用新近发明的纤维光感系统，代替了原本以镜子来导光的经典激光设备。
To help the lidar cop, the researchers replaced their classic lidar device, which used mirrors to direct the light, with a newly developed fibre-optic system.
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