美國能源局 (U.S. Department of Energy) 的報告

Optical Safety of LEDs https://www1.eere.energy.gov/buildi..._fact-sheet.pdf
True Colors https://www1.eere.energy.gov/buildi...true-colors.pdf

Often, investigations into the effect of short-wavelength radiation—be it on humans or artwork—suggest that LEDs are dangerous because they emit more blue light than other sources like incandescent bulbs or CFLs. While it is true that most LED products that emit white light include a blue LED pump, the proportion of blue light in the spectrum is not significantly higher for LEDs than it is for any other light source at the same correlated color temperature (CCT)

在同樣色溫下，LED並不會產生比其他光源產生更多的藍光


In general, higher CCT LED products have a more prominent blue peak, which is dictated by the need to have proportionally more blue radiation—a fact that is common to all high CCT sources

較高色溫LED會有較高的藍色 peak，這對其他相同高色溫光源都是一樣的



所以說，跟是不是LED無關，只跟色溫有關。
第一份報告的圖二很清楚的可以看到日光比2700K的LED還有更高的藍光