Light Spectrum
Content
In this diaporama, you will find a continuing selection of "light spectrum" illustrations. Feel free to come back and visit regularly.
Effect of a class 3 sun lens on the sun’s rays. Under the graph: rays transmitted to the eye despite the wearing of a class 3 lens, i.e. around 15% of blue light.
The selective protection offered by Crizal® Prevencia®. Harmful forms of light (UV, 400-450 nm blue-violet light) are filtered out, while the useful and beneficial portion of the spectrum is preserved virtually in its entirety.
The blue curve represents the typical emission spectrum of a white LED. The blue peak reaches its maximum value at about 435nm. It corresponds to the primary light generated by the LED semiconducting structure itself (the LED die). The secondary peak reaches a maximum value at 550nm (yellow colour) and is the secondary light emitted by luminophores excited by the blue light (fluorescence). The combination of the direct blue light and the yellow/red secondary light produces white color. The red curve is a plot of the blue light retinal phototoxicity function. It reaches a maximum value at wavelengths corresponding to the blue light peak emitted by LEDs.
Read article
View full size image
Emission spectrums of various light sources.
Electromagnetic spectrum and zoom on visible light.
