- May 13, 2010
I agree on the brightness. They said blue LEDs appear most visible to human eyes due to rods and lalala. I find this true. My sisters phone charger has a blue LED which glows the whole fricken hallway! I should ask if she has any sleep issues The chargers bright blue led right next to her bed XD
Blue isn't the most visible light to the human eye. Green is. I believe 445nm might be the least visible wavelength that is commonly used in lasers with the exception of blu-ray (405nm). Here is a graph of the eye's response to light of all wavelengths.
I got that from MFO's laser building guide. These diodes are still really really bright for the price because they put out 1 Watt.
I haven't hear anything about blue light giving you cancer, but I've read that it's the most damaging to the eyes. Read up on the blue light hazard for more info. :beer: