"Maria Mustafa" wrote in message
...
Hello every one

I want to know the luminance of simple LED green bulb of normal small size
in cd/m2 at 2.5V

Can anyone help

Regards

Maria


That's an impossible question, from the same book of impossible questions as
"How long is a piece of string ?" With a quick glance at two or three
catalogues, I could probably find you twenty different green LEDs with
twenty different specifications. And how big is "normal small" ? 3 mm ? 5
mm ? Tinted encapsulation ? Diffused encapsulation ? Water clear ? Viewing
angle ? Then there's how much current you are going to push through it. And
"cd/m2" is a meaningless measurement. Lumens / m2 possibly, but a single
green led is going to return a figure so small for that, it will be useless.
Sorry to be so negative, but there's little in your question to be positive
on ... :-\

Arfa