Re: 有關燈的比較 - 單車
By Megan
at 2005-12-16T22:44
at 2005-12-16T22:44
Table of Contents
這位大大好像滿專業的耶
小弟的公司是做車尾燈的，尤其偏重LED的車尾燈
有一些專用儀器，如果大大想要得到比較明確的數據的話
我可以幫你做一些測試……只是提案啦
其實人眼對黃光的感受強度本來就比較高，人眼在波長555nm左右，對光感受能力最強
而555比較接近黃光（一般波長是584nm），市面上的白光LED大都是藍光加黃色螢光粉
所以其實相同流明值，人眼會覺得黃光會比偏藍的白光還亮
sun那款燈，如果照大大提供的數據，單顆led是1.8流明的話，然後五顆中心亮度可以
到500燭光，等於一顆1.8流明的led可以提供100燭光，個人覺得滿不可思議的
因為我有用過單顆二十五流明的led，加上聚光的光學鏡頭，中心亮度大概也才134-150
燭光。而這樣的光型可視角大概是15度左右而已。
其實全世界只有少數的幾個歐洲國家對腳踏車車燈有立法規定，像德國是規定腳踏車
一定要安裝車燈。不過他的光型不會很難設計啦，只是角度其實不大
嗯，其實我有自己畫過腳踏車車燈，可以過法規的，只是沒人要幫我開模生產，哈哈
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