什么是光线感应器
Release time：2022-08-12
author：Ameya360
source：网络
reading：3186
一、光线感应器是什么
光线感应器也叫做亮度感应器，英文名称为Light-Sensor，很多平板电脑和手机都配备了该感应器。一般位于手持设备屏幕上方，它能根据手持设备目前所处的光线亮度，自动调节手持设备屏幕亮度，来给使用者带来最佳视的觉效果。例如在黑暗的环境下，手持设备屏幕背光灯就会自动变暗，否则很刺眼。
二、光线感应器的功能
它的功能是用来感应光线强弱的，然后反馈到手持设备，自动调节屏幕亮度，从而达到省电的目的。
三、光线感应器的工作原理
光电感应器是由两个组件即投光器及受光器所组成，利用投光器将光线由透镜将之聚焦，经传输而至受光器之透镜，再至接收感应器，感应器将收到之光线讯号转变成电器信号，此电信讯号更可进一步作各种不同的开关及控制动作。
其基本原理即对投光器受光器间之光线做遮蔽之动作所获得的信号加以运用以完成各种自动化控制。
四、光线感应器的说明
目前，许多手持设备都有此项功能。如三星i900和B7300两款，还有诺基亚N97 E63 E71 E72 6303c等手机，苹果的IPA等平板电脑，相信它将成为以后手持设备的标配。
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