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What objects has the most saturated colors?

Started Nov 24, 2021 | Discussions thread
petrochemist Veteran Member • Posts: 3,619
Re: Don't forget LEDs
1

Entropy512 wrote:

LEDs without phosphor coatings (e.g. most color LEDs, but not white) are strongly monochromatic. If you're REALLY picky you will want to additionally filter the wavelength because they do have a few nanometers of bandwidth, but for the most part, color LEDs are going to be the cheapest and simplest way to get strongly monochromatic/saturated light sources.

Colored LEDS can indeed be fairly good, but the spectral power distribution for standard color LEDS is typically about 50nm bandwidth see wikipedia. They'll very probably be good enough for the OP.

Atomic lamps will have emission bands specific to fractions of a nm when I used to determine trace lead in our products I used the emission at 283.3053nm (though the spectrometer probably detected ~1nm either side of 283nm). More familiar to most people would be the Sodium D lines at 588.9950nm & 589.5924nm as produced by old fashioned street lights.

LEDS are certainly going to be much cheaper & simpler than atomic lighting, which would often need lamps costing hundreds of dollars, along with dedicated power supplies...

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