- Almost invisible (from afar and when lit) yellow marking for enhanced aesthetic
Special solder footprint dimensions for precise LED positioning. Very easy to solder with DIY techniques. No more overflow solder - bumps which can impede optic placement.
NOTE: Ignore those erroneous guide boxes, they won’t affect the board/soldering performance. The LEDs self align perfectly.
This board is sure overkill for 757 LED family, the board thermal resistance is much lower than the LED thermal resistance itself. But with some scrapings here and there this board can be used for other high power (2 pads) LEDs as well.
So you can use ultra low profile (thin) flat heat screw up to 5mm head diameter. Easier to countersunk too, without having to break through the super hard ceramic.
Do you recommend any driver or host for the VR21P4 and VR21SP4 to be used with? I’m thinking using the D4 as host for the VR21P4 but the driver will kill it in an instant. Will the VR21SP4 fit in the Convoy S2+?
For a Convoy S2, I think, a VR16SP4 should be fine instead of VR21SP4 (didn’t try OP reflector of the XM L2 version of Convoy S2, a TIR lens will work there for sure, I think).
For a host, which is compatible with Carclo 1062X series optics (thus, VR21P4), I received a recommendation, which mentioned, that kiriba has a spacer for Convoy M1 host. Would be happier, if there would be a host with out-of-the-box support for 1062X optics and any MCPCB, which fits under it, though.
Uhmm, I’m a noob when it comes to flashlight vocabulary. What I know is driving these Optisolis beyong 500mA/ LED is not a good idea if you care about lumen maintenance. You may laugh, but I only have one Convoy 18350 and that was a Djozz-lumen calibrated flashlight that I don’t want to open.
Optisolis designed for 25.000 L70. So far only calculated estimation available because it’s still undergoing the test. I predict it will reach 50.000 hours minimum judging from how well they can be overdriven.
BAD news for you guys CCT mixer. Optisolis can’t be mixed in parallel configuration, the voltage between CW and WW is just too high. You can only mixed them in parallel within these two categories: (2700K, 3000K, 3500K, 4000K) and (5000K, 6500K).
The WW will suck up most of the current leaves the CW very dim. The reason is because WW uses 440nm pump and CW uses 420nm pump.
If you really have to mix those two groups you have to wire them in series or use current balancing driver (when multi strings present) or multi output driver.
- doesn’t require special MCPCB (for “normal” applications)
minimal “blue spike” for WW, no “blue spike” and cyan dip for CW.
The targeted applications are indeed geared towards general and luxury lighting such as those in museums, galleries, gem shops, printing labs, living space, etc…not flashlights
A good example is if we want to convert a gallery to very high CRI space. With E21, we would end up with very high cost with still less than perfect results. A diffused indirect lighting is required for lighting a space with minimal glare. A point source light source like E21 would lead to uncomfortable viewing experience. So, low to medium power LEDs are all it needs, distributed over larger area.
Even when spot lighting is needed, Optisolis paired with correct optic will do the job with much greater quality.
Yes, as lower an CCT and Illuminance that the less significant CRI. The main things is below of BBL. I do not tried optisolis but i do not seen difference between e21 r80/r9080 both 3000k
Clemence, this is a very comprehensive analysis, and I understand most of your points. I am just wondering if there exist an application that requires the extreme cri at 3000k?