Hacker News new | ask | show | jobs
by rom16384 5041 days ago
The energy of a blue photon is higher than a red one, and so an intense blue light might be an hazard [1]. That said, I don't think these glasses will help much, because according to their transmission curve they still transmit ~75% in the 470nm region (which corresponds to the blue emitted by "white" LEDs). If they had managed to make some kind of "optical notch filter" removing the ~470nm blue light from LEDs at a reasonable price it would have been pretty much an instabuy for me.

[1] http://en.wikipedia.org/wiki/High-energy_visible_light