Meassure in CANDELA with CCD camera

[danilo]

Hello!

Does anyone have any expirience, how to meassure light source and present
the value in Candela's?

Dan

[Vivek_N]

Hello danilo,

To the best of my knowledge, there is no method to measure luminous intensity in candelas using NI software and hardware. You may need a photometer/lux meter in order to do this measurement.

[Benoit]

I think it's possible, But you will need to calibrate your sensor to make corelation between your measurement and the real value in candela

[danilo]

Hello!

Thanks for this news.

I have to study that and the other problem is that the shapes of light sources are totaly diferents and sources are based on LED or normal
light bulbs wich are much more homogenous comparing to LED.

Any idea is wellcome.

Regards!

[Benoit]

Each pixel must be calibrated separately. For doing this, you will need a light source very uniform with a error that you know. Example using a diffuser in front of a light source. The other method is to use a diffuser in front of the light to measure and the result will be an average of the real light minus some absobtion and reflection. If you want to measure different led color, you will need to callibrate your sensor for the complete visible spectrum. Good luck. Some time it's realy more simpler to buy a specialised instrument.

B.