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Results tagged with visible-light
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user 203415
Questions related to the perception and measurement of light (primarily in the visible range), its mathematical description, the reproduction of colors by different means, color combinations, etc. Please use the tag [electromagnetic-radiation] if you want to refer to the general form of light.
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Why does shorter focal length result in greater beam divergence?
So I got 2 converging Fresnel lenses, one with 50 mm focal length and other 70 mm.
My experiment looks like this:
When trying to focus and SMD LED emitter into a narrow beam (sticking to lenses fo …
- 65
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Why is it possible to couple multiple wavelengths into a single mode optical fiber?
I'm quite new to the mode theory, but as I understand, single mode fiber should only allow a single pattern of wavelength + polarization.
I'm assuming a non-modulated non-coherent light (a white LED, …
- 65