- Joined
- Jun 4, 2011
- Messages
- 137
- Points
- 28
Hello,
Quick writeup on my first build.
OBJECTIVES:
1) Good heat transfer:
Direct press heat sink for diode, thermal paste for drivers. Eudamonium did a great job on a custom direct press heat sink.
2) High Power:
445 baby! driven with 2 flexdrives V5. set at 750ma each, preset by DTR (Thanks)
3) High efficiency:
Again, 2 flexdrives thermal pasted to driver heat sink. For optical efficiency, used AR coated lens.
4) good beam quality:
Here, there is a trade-off with the available options. Either you go with AIXIZ for good beam at the expense of clipping the beam and reducing output, OR you go with 405-G-1 lens with great power at the expense of divergence.
I found a lens that has not been tested out here, the Thorlabs A240 lens. It is "A" AR Coated, has a longer focal length for reduced divergence, and a good numeric aperture (0.5) for good beam capture. My theory was that it would have ~405 G1 power transmittance, and lower divergence than the AIXIZ.
Drawbacks: 1) cost $80, but I wanted to try something new here and share the experience. 2) it required a M12x0.5 thread due to its larger diameter, had to ship a custom tap to Eudamonium.
5) Simplicity: -Went with a standard host, cree WF501B
RESULTS:
The power of these things are truly amazing, it is one thing to lurk on the forum and another to actually build one. Way too powerful. So powerful that I am still wearing my safety glasses while typing this because I forgot to take them off.
Divergence test:
Beam @ 8' = 6.35mm
Beam @ 24' = 15.875 mm
Divergence mrad~= (width 2 -width1)mm/(Distance 2-distance 2)m
Results in divergence of 1.95 mrad.
Power Transmittance: Unable to test at this time (no LPM).
Beam profile: Beam was actually tighter than I expected.
Conclusion:
Works great, on to the next project. I want to mention that the people on this forum are some of the most helpful, enthusiastic, and knowledgeable that I have encountered. A real pleasure to learn from :thanks: . Particularly Eudamonium really came through helping me with this non-standard heat sink for a great price.
Check out the pics!
Regards,
-James
Quick writeup on my first build.
OBJECTIVES:
1) Good heat transfer:
Direct press heat sink for diode, thermal paste for drivers. Eudamonium did a great job on a custom direct press heat sink.
2) High Power:
445 baby! driven with 2 flexdrives V5. set at 750ma each, preset by DTR (Thanks)
3) High efficiency:
Again, 2 flexdrives thermal pasted to driver heat sink. For optical efficiency, used AR coated lens.
4) good beam quality:
Here, there is a trade-off with the available options. Either you go with AIXIZ for good beam at the expense of clipping the beam and reducing output, OR you go with 405-G-1 lens with great power at the expense of divergence.
I found a lens that has not been tested out here, the Thorlabs A240 lens. It is "A" AR Coated, has a longer focal length for reduced divergence, and a good numeric aperture (0.5) for good beam capture. My theory was that it would have ~405 G1 power transmittance, and lower divergence than the AIXIZ.
Drawbacks: 1) cost $80, but I wanted to try something new here and share the experience. 2) it required a M12x0.5 thread due to its larger diameter, had to ship a custom tap to Eudamonium.
5) Simplicity: -Went with a standard host, cree WF501B
RESULTS:
The power of these things are truly amazing, it is one thing to lurk on the forum and another to actually build one. Way too powerful. So powerful that I am still wearing my safety glasses while typing this because I forgot to take them off.
Divergence test:
Beam @ 8' = 6.35mm
Beam @ 24' = 15.875 mm
Divergence mrad~= (width 2 -width1)mm/(Distance 2-distance 2)m
Results in divergence of 1.95 mrad.
Power Transmittance: Unable to test at this time (no LPM).
Beam profile: Beam was actually tighter than I expected.
Conclusion:
Works great, on to the next project. I want to mention that the people on this forum are some of the most helpful, enthusiastic, and knowledgeable that I have encountered. A real pleasure to learn from :thanks: . Particularly Eudamonium really came through helping me with this non-standard heat sink for a great price.
Check out the pics!
Regards,
-James
Last edited: