Re: FS: >110mW PHR, >140mW 4x & >170mW 6x Blu-Rays
jayrob said:
Do you have the current settings for the above 3 examples?
I have two examples of 6X's at 190ish mA's. Both with Meredith glass lenses...
* 209mW's at 191mA's
* 224mW's at 192mA's
Jay
As you can see, even the 6x's vary quite a bit in efficiency. But they are still consistent enough, that all of them can be used! Especially since they don't have kinks, which could prevent you from reaching a certain power... One may require a bit more for the same power, the other a bit less, but all of them will be capable of going to 200mW after plastics or higher..
The current setting will be determined for each diode individually, based on a plot. And it will be set for that power after a plastic lens, because a plastic lens is a common reference, which everyone can relate to, and i can calculate the other values from it easily by now. Also, for the diode, their output power matters more, than the current setting.
For example. if you have two diodes at the same current, one lower efficiency, the other higher efficiency, the higher efficiency diode will actually suffer more at that same current, simply because the optical flux at the die will be higher. But that's too simplified, since it suggests the efficiency is the only difference between them. In reality, the different efficiency must have a cause, and if that cause is pre-existing imperfections, or some such thing, it then gets more complicated. The lower efficiency diode will be under a lower overall stress at the same current, but the pre-existing imperfections could cause it to fail sooner. Then again, the same imperfections could actually make it live longer in some rare cases, for example, if they are "evenly spread out"... It's a very complicated balance of multiple things..
But the point is, how long they can take a certain power on average. I will try to milk the three murder victims for all they are worth, and then some!
Luckily, Kage donated a 6x to me for testing, so that i don't go broke over this too much... ;D Thank you Kage, your donation is greatly appreciated!
Anyway, if these 6x's were like my old one, it would take 192mA for 175mW, 215mA for 200mW and 235mA for 225mW after a plastic lens.. In fact, the latter is where my old 6x is currently at - 236mA, putting out 226mW after plastics or 261mW after medium custom lens or 278mW after short FL custom lens..
My old 6x has lost 8mW of power through degradation by now, i said it's gonna die any moment now, several times, but it just keeps surprising me with it's toughness!