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NDG7475 Raw Beam Output Diameter @ 4 inches?

Alaskan

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Can someone do me a favor and measure the diameter of the output of a NDG7475 520nm green laser diode four inches away from it? I am away from home and trying to work on a new host and need to know.

Chris
 



Eracoy

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With a G2 lens and focused to infinity, I get a spot size of 9.53mm by 1.59mm at 4 inches from the lens. With a 3 element lens, I get a better defined spot (less splash) which measures 6.34mm by 2.39mm.

If you'd like me to test it at a different focus or distance, let me know =)
 
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