Looks like you have a 9W LED. There are a few issues to be aware of.
- LED Spectrum
- Heat management
- Light vs speed
Typically the more light, the faster the exposure. So one would say, the more the better?
Not really. The image sensor can be overwhelm if too much light is is hitting it, resulting in a smear. One could say… no problem, I’ll just work it out with the lens. The issue is that the enlarger lens sharpness and resolution is dependent of the iris setting. Typically the best resolution is between f4 and f5.6 for the Nikkor EL and Schneider Componon S, both the f2.8/50mm. In consequence, if the iris setting is fix, the only knobs available are the shutter speed, and the light output.
I do not have a lot of practical experience with a COB led to give you. I did strap one to an old cpu heatsink, and used it for projection, and it worked. The COB had mounting screws, I do not know how to best fasten the type you have. This is a good overview of heat/sink calculations… sorry to add to your learning curve.
Finally item 1. The spectrum for those are on the last page of the spec sheet. White LEDs use phosphor activated by a color LED, so these spikes are typical. Some use multiple phosphor types to achieve a more even curve.
The light particulars is the subject of extensive discussion in the forum (check The Backlight thread).
The driver. The datasheet note on power indicates “Pulse width ≤ 0.1ms, Duty ≤ 1/10”, so it looks like this LED power is based on a pulsed power. That creates another difficulty, as the HQ sensor is also rolling shutter.
You can always start with what you have, and change. But from what I see, that LED is not going to be easy to handle. Something like the Femtobuck or Picobuck would be a driver option, but those are nowhere to be found.
Keep the above in mind when selecting the LED/heatsink/driver combination for a COB LED.
Searching the forum can give you some light alternatives. Or find a high CRI LED bulb with appropriate dimensions for the projector.
@Manuel_Angel makes some good points on this posting
And his solution is a simpler alternative to start.