Jason38 wrote:It's so cool that you know this piece of history in regards to this technology. I bet the spectrum on this light bulb if it ever came available would be incredible compared to LED. We all know that it will never become too big as we have way too many LED factories setup already.
Fortunately, LED is now capable of incredibly great spectrum, far superior to anything CRT can dish to you. The problem is today's monitors are often using lower end LED in their edgelights to save money, and are exacerbated by the LCD limitations and not doing local dimming to compensate, etc.
For example, if you visit Nanotech booth or some other booth at a convention (CES, DisplayWeek), you witness LED-technology displays with much better color gamuts than you've ever seen in your lifetime, with some LCD displays that look identical to an OLED.
Such displays is what I'm seeing nowadays in 2018 and 2019 conventions at the "flagship LCD display" levels, and I strongly believe the LCD horse has many decades left in it (for many technological reasons), even as OLED will become the other simultaneously popular technology.
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A word about LED quality in the light bulb industry, since this topic is "light bulb"....
Now, elsewhere -- in the lighting industry sphere -- if you skip those cheaply-made LEDs, there are now violet-chip white LEDs with a CRI of 97, accomplished using a violet chip instead of a blue chip, and phosphor for all colors.
I have seen some great LED bulbs that I thought were true halogen or other technology. Those speciality bulbs are expensive but are often found illuminating some high-end clothing stores, prestigious museums, and other stuff like that that pay the extra dime -- in some cases these are still $10-$50 light bulbs in today's era of sub-$10 6-pack LED bulbs at Home Depot that are mere CRI 80 mortals. Most of those ultra-high-end luxury LED bulbs are not sold in stores at all.
On the other side of the LED quality spectrum, my big problem is the scourge of cheap 50-cent and 1-dollar unfiltered PWM-flickery LED light bulbs that flicker -- the omission of sufficient capacitors in some really cheap LED light bulbs. Combined with a color-temperature-selection mistake or noticeable color-spectrum inconsistency, making some of them look worse than a CFL.
Even IKEA has upgraded their LED bulbs to at least CRI 90+ (among the cheapest PWM-free CRI 90+ that I know of) for decent prices not much more than the bargain-bin stuff. Over 10x more comfortable to my eyes than a common randomly selected LED bulb at Walmart. Yet still inexpensive. Even though they're still blue-chip based, why settle for measly CFL-like CRI 80 with LED light bulbs?
LED has been rightfully maligned, but it has incredible potential including much more sunlike-spectrum abilities that can be unlocked with the right engineering and wallet size.