Group buy HL6385DG 150mw, 642nm reds

[mccarrot]

ok, the 637nm diodes got a typical operating current of 250ma, so with 300mA you are overdriving 20%

the 642nm diodes typical operating current is 280mA, add 20% = 336mA

attached is also a extended temperature/mA curve

optnext 642nm.jpg

[kecked]

I really prefer the 638nm diodes. They seem a lot brighter to me. I put an image using 638nm next to a 671nm image and you can tell the difference but it isn't what people would think in terms of being much "deeper" in terms of red. Thus the argument at least for me to use lower wavelength reds to get a better image doesn't hold water at least for laser art. Looking at that chart, it seems a big TEC would help alot if you could solve the dew issue with a heated window and a sealed chamber for the reds. Now having said that, it would most likely be a lot cheaper to add more diodes

[catalanjo]

ok, the 637nm diodes got a typical operating current of 250ma, so with 300mA you are overdriving 20%
the 642nm diodes typical operating current is 280mA, add 20% = 336mA
attached is also a extended temperature/mA curve

optnext 642nm.jpg

Is this graph for the 637nm or the 642nm LDs?
Cheers

[mccarrot]

the graph is for 642nm diodes

[catalanjo]

the graph is for 642nm diodes

Thanks mate !

Got one for the Opnext 637nm by any chance ?

Cheers

[steve-o]

What happened to the 300 and 500mW ~638nM diode group buys? Lousy beam specs I guess? Or too pricey ..