Hi all,
I have been looking at upgrading my red what with Marconi not being around right now and I need to have a red with the RGB (my Maxxy is still going fine..but what if !!)
Of course this leads to the fact that blue is also an issue of I go say 1 watt red at 640nm..
So I have been looking at most of the manufacturers of 640 reds the nice ones are European that I can find. The Chinese so far do not produce these.
I also asked about blue..
Here is what Arctos had to say and I don't think I have seen this talked about here on PL (I may have missed it of course) but it may explain why many of these companies offer 445nm..
Arctos say :
Max sensitivity of the human eye for blue is 445nm- please convince yourself by googling this... it is highly interesting.
The longer blue wavelength the more stimulated are your green receptors in your eye, so more laser power is necessary. Even if 457nm pure blue seems brighter as 445nm ! BUT.Its a mystery and a fact..
end quote..
Just food for thought be interested to see what some of you opto and medical guys think about this..
Its not in dispute by me just an interesting point I guess..
Cheers
Ray