Hi all guys
Inside my ~2.5W projector I have a green CNI module MGL-H—WL203-500.
I measured it and it give out 620mw. Good point for it.
Now the problem...
Since few days its spot goes ...crazy. I explain me better.
When at full power its spot are "double", something like this oo (two points are very close between them, but cleary visible both).
When i turn down the output power by DS3CB card (Stanwax Laser), its spot return practically to be only one ( to be sincere, there is still a very very little "double" spot.... maybe its phantom??).
I also tried to take the DS3CB card off and to control the output power by QuickShow settings. The problem is still the same, unchanged: double spot. In the air, at full CW power, is cleary visible the double ray.
Module has worked not more than 40-50 hours (bought in October 2012). When I bought it, it was perfect: single spot 3mm diameter.
Now, if I want to obtain a discrete spot, I have to reduce its power about 45-55 % (not alwas stable also...). At full power it is stable, but doubled!
Obviously I have not opened the module. I want not. I'm afraid to do something wrong.
My questions are:
1) a 500mw green module is a single or double diode module? If double diode, maybe they have gone out of alignment?
2) Maybe module has gone from (near)" TEM 0" to "TEM 00" ?
3) ???????????
Any advice/help is more than welcome
Thanks and forgive me for disturb.
Greetings
Steve