laser headlights

chiming電子公司---(AUTO LED)BMW稱雷射大燈的亮度色溫都是經過研究的，照射效果符合人眼的視覺習慣。雖然大燈有著很高的亮度且光源是雷射，但是雷射大燈完全符合日常使用的要求，燈光也不會對人眼造成傷害。

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laser headlights

Li-Fi with a laser diode

chiming電子公司---(AUTO LED)Li-Fi用激光二极管替换现有的LED灯可以大大改善现在的情形。激光器的高能量与光效率，传输数据的速率可以比LED快10 倍。激光照明可以混合不同波长的光产生白色光。这意味着每个波长的光可以用作一个单独的数据通道，同样的光波可以双向传输

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Li-Fi with a laser diode

white light lasers

chiming電子公司---(AUTO LED)白光雷射將成替代性光源，效能優於 LED雷射技術可望取代發光二極體（LED）成為主流光源，相較於 LED 照明每瓦 150 流明的發光效率來說，雷射可達每瓦 400 流明，比 LED 更光亮也更節能。而白光雷射技術也可用於顯示器，呈現更精確鮮明的色彩。

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white light lasers

laser lighting

chiming電子公司---(AUTO LED)藍色LED存在「光效下降」問題，越是高亮度，就越難提高效率。而雷射器不存在這一問題，「與LED照明相比，雷射照明可實現非常高的效率」。因此中村預計，雷射照明將來會取代LED照明。

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laser lighting

LED特性

chiming電子公司---(AUTO LED)電子與電洞在其內復合而發出單色光，這叫電致發光效應，而光線的波長、顏色跟其所採用的半導體物料種類與故意摻入的元素雜質有關。具有效率高、壽命長、不易破損、反應速度快、可靠性高等傳統光源不及的優點。

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LED特性

藍光LED

chiming電子公司---(AUTO LED)人類是在太陽系裡進化出來的，根據黑體輻射的維恩位移定律，我們可計算出太陽光中心波長在550nm左右，而藍光LED中心波長是465nm，偏離了太陽光的中心波長，所以從進化論角度來說，我們人類的眼睛不能接受“過量”藍光。

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LED發光原理

chiming電子公司-LED在一適當的順向偏壓下，(電子、電洞)由電的能量分別注入(N、P)兩端後便會在P／N介面區域結合而發光，即電子由高能量狀態掉回低能量狀態與電洞結合，將能量以光的形式釋放出來

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