Hello,
See below answer from support:
"
According to our supplier, Laser transmittance is 6.5%.
The OD is 1.19. But the problem is that the testing device detects the 550nm(wavelength) light while our module’s laser beam in about 450nm.
We are asking the supplier to re-do the experiment.
I need to explain this issue clearly. The laser module face down when it is working, so the laser beam is much weaker than 1.6W laser beam. We have not measured the OCD of the dispersed laser beam as you can imagine how weak the transmitted light is.
"
So, yes, I agree, they would need to perform test in the correct wavelength first and then measure various reflection cases.
Worst case is obviously direct laser beam…which is, in normal condition should not happen.
Cheers