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Laser Light Properties

M

mufc

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Jan 2, 2010
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Hi,
Im trying to understand how to work out the luminance or luminance intensity a laser diode can emit. Most of the maths I've seen when looking around is full of variables I don't understand. Is there a simple way to work out the properties of the light produced using the wavelength, output power, spot size, etc?

Thanks
 





D

Deleted member 8382

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propieties? I fail to understand what you ask xD
 
RA_pierce

RA_pierce

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Sep 16, 2007
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Hi.

I posted this in another thread some time ago... The information may or may not be accurate, but it is the best I could find.

... you can check this table for the Luminous efficacy at whatever wavelength laser you are using:
Luminous Efficacy
Both photopic (light adapted eyes) and scotopic (dark adapted eyes) conversions are listed.

To calculate approximately how many lumens your laser is outputting, take the lm/W value for your specific wavelength and multiply it by the power of your laser in Watts.
Again, for my PGL:
Photopic: 588.746 * 0.65W = 382.6849 lm
Scotopic: 1378.7 * 0.65W= 896.155 lm

I'm not sure how accurate this Watt to Lumen vs. Wavelength conversion is but it seems about right.
Click to expand...

This is the thread:
http://laserpointerforums.com/f48/distance-experiments-44885-2.html
 
M

mufc

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Jan 2, 2010
Messages
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yeah sorry couldnt quite explain what it was i was looking for.
Thanks RA_pierce, just what i was after.
 
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