roSSco
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nojamilm9 said:ok and do these have photo diodes in them.
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nojamilm9 said:ok and do these have photo diodes in them.
thats interesting indeed. mayb those xbox diodes are simply underperforming 6x diodes sifted out during production?... care to post close-ups of both LDs?GooeyGus said:Something interesting I've discovered after de-canning both the strong xbox diodes as well as the 6x diode, is that they look identical on the inside. Also the marking on the back looks very similar, but I cant see it well enough to say they are the same.
thats interesting indeed. mayb those xbox diodes are simply underperforming 6x diodes sifted out during production?... care to post close-ups of both LDs?[/quote]phenol said:[quote author=GooeyGus link=1209940381/300#307 date=1211275681]Something interesting I've discovered after de-canning both the strong xbox diodes as well as the 6x diode, is that they look identical on the inside. Also the marking on the back looks very similar, but I cant see it well enough to say they are the same.
jamilm9 said:ok so what is a safe ma to drive it with to have 2-3 hour life.I would use washers as a heat sink.
jamilm9 said:so how many ma.I heared that 90 is good. :-/
jamilm9 said:at 90ma your getting 106 mw! .
jayrob said:Well, we all know that each diode will differ slightly. The lens choice will affect the power readings as well. The other thing to consider is the meter used to measure the laser.
For high power red builds, my readings are in line with Lava's graphs. But I sent a 258mW open can build to Senkat for him to do a review, and his thermal meter reading was 288mW's:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1210043392
That said, let me tell you about my readings...
When I built my 6 X blu-ray, I took readings with my LPM-1 on the 473nm setting. (no 405 setting). I once read somewhere that you take the 473nm reading, and multiply it by 1.75 to get the conversion to 405nm. After getting a weak conversion at 85mA's, I contacted Hemlock Mike to ask his opinion about the LPM-1 conversion. He told me that multiplying by a factor of 2.6 was about right.
I then took the same reading and multiplied it by 2.6, and the conversion was right in line with Lava's 6 X graph!
Now, I would love to know some other comparisons against the LPM-1 with different meters. I would like to know what others have found for the correct conversion to 405nm with the LPM-1. For now, I am satisfied that Hemlock Mike's recommendation was right in line with Lava's graph.
I would guess that it is between 2.0 and 2.6. But 1.75 is definitely not correct. Way too low on the graph.
This PHR-803T diode measures (at 90mA's), HOTTER than my 6 X diode at 100mA's!.
Using an AixiZ acrylic lens (plastic cut away), and my LPM-1 (473nm) here were the readings against my 6 X:
* 6 X @ 100mA's - 38.8mW X 2.6 = 100mW's (Then I put a Meredith glass lens in there and got a reading of 50.19mW's X 2.6 = 130.5mW's)
* 803-T @ 90mA's - 41.1mW's X 2.6 = 106mW's. (This must be an above average 803-T diode, because it is HOTTER than my 6 X diode)
Jay
P.S. I believe Lava did the 803-T graph with an AixiZ acrylic lens. (plastic cut away)
http://www.laserpointerforums.com/forums/YaBB.pl?num=1210649211