For those looking for a standard candle in the streaming video of the miniSKLEP:
We have a few candidates for approximate standard candles that may help determine that actual output Lumens,
1. The ambient light in daytime when the office lights are on maybe 250 Lux
2. The LED display on the power supply. (The light per number pixel should be easy to determine although it is red rather than blue-white)
So 10mA per segment mostly all 0’s is 10 x 6 x 4 x 3 = 720 mA and assuming something like 2.0 to 2.8V for red LED’s would give 1.5 to 2W and about maybe 150 to 200 lumen, but probably it also is a bit less as it’s using red LEDs so maybe 50 or 100 lumen for the PSU display. One segment would be maybe between 20 and 28 mW and one "0" digit between 120 and 168 mW.
3. There is the green indicator led on the front of the PSU which I guess is a 3mm led perhaps 40mW or 4 lumens
4. There is also the clock display that has blue white Digital display but I think that’s more likely a led screen display rather than a seven-segment based one. But assuming this is about 200 cm^2 and is about 300 nits I think it would also be about 50 to 100 Lumens.
5. Possibly more complex but maybe still indicative the reflection of the window during daylight in the lamps mirror.
I think that is pretty good amount of options to make a reasonable estimate of the output.
I think it is indicating that it is close to what Andrea Rossi said, but each one of us can make our own conclusions based on this input.
To put it in perspective the input power less than 0.0007 W would power less than 3% of 1 segment of 1 digit in the PSU digital display