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If you want that kind of effect, LEDs or lasers are your best bet. The colors are intensely saturated, and absurdly bright (different color-specific star LEDs
by dekhn 4y ago
If you want that kind of effect, LEDs or lasers are your best bet. The colors are intensely saturated, and absurdly bright (different color-specific star LEDs on PCBs, mounted on aluminum heatsink, run near the current limit for the LED).
- bragr 4y agoLEDs have a very poor spectral range, and mixing 3 distinct colors (RBG) is not the same as real full spectrum color. It's a good approximation which is why we use it, but an approximation none then less.
- dekhn 4y agoYou're referring to the gaps in https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3836a https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=38... Spectral range in LEDs in the past decade has become amazing. For the visible spectrum you can cover the entire area with a reasonable intensity using just 3 LEDs, although the use case I'm describing is "fully saturated" which is hard to achieve in some areas. Yes, there are gaps and color mixing isn't great. That said, I did build a color-cycling LED night light and it fills the whole area with solid color across the spectrum (I had to switch to HSV to make that work well).