UID199660
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金钱11091
交易诚信度2
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注册时间2005-10-30
最后登录2018-5-23
初级会员
 
交易诚信度2
注册时间2005-10-30
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引一下
lbeam angle cd/lm
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5º 167.22
10º 41.82
15º 18.60
20º 10.48
25º 6.71
30º 4.67
35º 3.44
40º 2.64
45º 2.09
Tian said that he was using 30º LEDs so the with 12,000-15000mcd ratings taking an average of 13.5cd per LED there should be about 13.5/4.67 = 2.89 lumens
Using 896 LEDs * 2.89 lumens/LED = 2590 Lumens
2590X3%=77.7Lumens
如用20000mcd的,那么20/4.67=4.28LumensX896=3837Lumensx3%=115Lumens |
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