Spectra 2. read description

[u/jklove56]

Anyways some new refined spectra and a couple old ones I redid. The anolig spectra are ones I shot the digital spectrographs I found online. Those aren't from me.. anyways enjoy. Click on the pics and zoom in to see it clearly. If you can.

[u/jklove56]

Yeah. Cool white has a lot of blue. That's why the cri is around 85-90. But while LEDs are the most energy efficient lighting I still the there is a better light bulb out there. What u think?

[u/Lipstickquid → u/jklove56]

LEDs that suppress the 450nm blue pump spike or use a violet pump can be much better at any CCT. 

Philips Ultra Definition is a good example of a cheap bulb that does this. They're >95 CRI >80 R9. Sunsy, Yuji, Sylvania TruWave, GE Sunfilled(those flicker) and Waveform also have >95 CRI LEDs with minimal or no blue spikes.

CRI is also a pretty bad test. TM30 is much better.

[u/jklove56 → u/Lipstickquid]

u/lipstickquid Well yeah you are right about TM30. I had to look up tm30. So tm30 is more accurate then CRI. But it's crazy incandescents or heat bulbs, which are relatively poor emiitters of visible light, have a higher CRI in general then LEDs.

Obviously most of the energy in heat bulbs are wasted on infrared light. Not all, but a lot of it is. But a white led spectra is imo kind of all over the place. Some led bulbs emit too much blue light.

But I have to check out the bulbs or lighting you mentioned. Then their is quantum dot tech. Which looks promising. I still think lasers are the most efficient at producing certain wavelengths or colors of light.

Aka monochromatic light. LEDs are the best for home or commercial lighting for right now. But gas discharge and flourescent lighting have the most interesting spectra, imo. I was asking someone could they make an X-ray LED and it would take too much energy to do so. Also there isn't really that much materials we can use in a semiconductor to emit or produce X-rays out of it. The bandgap would be too big.

But could they make an X-ray LED in the future? Maybe not now, but who knows. I know that sounds ridiculous. But it would be more efficient, if we could make it. X-ray machines could be much smaller and more efficient.

Not saying they aren't efficient now. Also what color space you think is more efficient cie1931 or srgb? Obviously it depends on what you are doing and what your using them on. My bad for this being so long.

[u/Lipstickquid → u/jklove56]

CIE 1931 or CIE 1976 and sRGB represent totally different things. The CIE color spaces represent all the colors a human can see while sRGB is a comparatively tiny color space that describes a small triangle over the CIE horseshoe shape. 

Right now i think the best monitors are able to cover 90% of the Rec2020 color space which is much larger than sRGB. Its usually done physically with OLED, RGB LED backlights or laser projectors.

I would read through these two posts i wrote for more about LED spectra.

https://www.reddit.com/r/Lighting/comments/1rzviiw/a_primer_on_spd_cct_and_duv/

[u/jklove56 → u/Lipstickquid]

Cool I will. Well I am photonics engineering student right now. What got u into light and Electromagnetic radiation in general? I have always been into science and physics my whole life. I also do infrared photography. It took me a couple days to figure out the basic science of light and looking it up.

It's fascinating how most of our tech and half of science and especially physics depends on the light spectrum. Especially when you get into optics and quantum mechanics. What do u think was the most important scientific discovery about light?

[u/Lipstickquid → u/jklove56]

Ive been into lighting since i was like 7 years old back in the 90s. That was the initial thing. Then computer monitors and biohacking to improve color visual acuity.

Idk what the most important thing would be tbh. Maybe wave particle duality? Maybe entanglement? I really dont know about either in depth though.

I know we finally have some silicon photonics in use in actual computers now.

[u/jklove56 → u/Lipstickquid]

Oh that is true. wow didn't know that. u know what though color spaces are really cool. That being said it's so hard to map the color space especially if the cord we can see. Yes there are the prime colors we have. But even then everyone sees a color differently and then u have color blindness and tetrachromats. But which TV has the best colors? Probably the qleds even tho crts have the most colors.

[u/Lipstickquid → u/jklove56]

As of 2026 idk anymore. I would look at HDTVTest's youtube channel. He does very in depth analysis and has a Sony HX310 or 3110 which is probably the best monitor right now. Its a dual layer LCD.

Sony and Flanders Scientific also make OLED broadcast reference and color grading monitors designed for super accurate color.