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LED brightness Calculation ?

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khongai

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led brightness calculation

How to calculate the brightness of message board to satisfy some standard for the traffic light ?
( Scaniing the row and colume will be used)

Thanks in advance.
 

can not be calculated. on trial and error basis u have to do it.
 

Luminous intensity of RED, GREEN or AMBER traffic light should be ≥200cd @ viewing distance ≥100m ..
If one super traffic green LED can give you ≈3.5cd you need ≈60 of them ..
https://www.lc-led.com/Products/department/1
Similar will be with other traffic stuff ..

Regards,
IanP
 

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