RoDnSuE
0
- Joined
- Jul 15, 2010
- Messages
- 191
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- 0
Hey folks,
I've been mulling this over in my head for a few days (as well as searching)
and can't quite figure it out.....
Lets say you have an un-IR-filtered 532nm laser that measures 200mw on an LPM.
You install an IR filter and then it measures 150mw. Without knowing the efficiency of a particular filter, how can you know how much 532nm v/s IR there is?
I just ordered 5 of these....
One piece IR Filter
But really, I'm just taking the sellers/manufacturers word in determining how effective the filter really is. I wouldn't know a true BG39 filter if it bit me.:yh:
Is there a way for the hobbiest to really be certain of exactly how much IR v/s 532nm you have?
Or am I just being "too anal" about it.
Thanks,
Rod
I've been mulling this over in my head for a few days (as well as searching)
and can't quite figure it out.....
Lets say you have an un-IR-filtered 532nm laser that measures 200mw on an LPM.
You install an IR filter and then it measures 150mw. Without knowing the efficiency of a particular filter, how can you know how much 532nm v/s IR there is?
I just ordered 5 of these....
One piece IR Filter
But really, I'm just taking the sellers/manufacturers word in determining how effective the filter really is. I wouldn't know a true BG39 filter if it bit me.:yh:
Is there a way for the hobbiest to really be certain of exactly how much IR v/s 532nm you have?
Or am I just being "too anal" about it.
Thanks,
Rod