Author Topic: What if the blue LED never came to be...  (Read 13588 times)
HomeBrewLamps
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What if the blue LED never came to be... « on: October 30, 2017, 12:48:41 AM » Author: HomeBrewLamps
So i was just laying staring up into the ceiling, noticing the warm colour of my lights i sparked a question, What if blue LED's never came to be and we were just stuck with the traditional Red yellows and yellowishgreens? I'd assume that alot of the tech we have today would be bulkier, possibly backlit by CCFL and none of the LED flashlights, streetlights, or anything involving white LED's would Exist... nor would any green, aqua or UV LED's ... the HID flashlight industry would be booming... street lighting would remain unthreatend by LED's, plasma TV's would still be common, VFD's would be far more common, and I'm sure neon would be a hella more common (neons been making somewhat of a comeback around here though). the world would likely be entirely different.
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dor123
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Re: What if the blue LED never came to be... « Reply #1 on: October 30, 2017, 01:21:53 AM » Author: dor123
LED threatend VFD even before the blue LED was commercialized, VFD and even LED calculators became obsolete even during the 80's, because of the low energy consumption of LCD displays.
Plasma TV disappeared without relation to the LED backlit LCD TVs. Even CCFL backlit LCD TV still had advantages over plasma TVs, in terms of no picture burning, slimmer and more compact, and less power consumption.
There were no reasons for the LED lighting to be a disruptive innovation for the electric lighting, as it have a lot of disadvantages over electric lighting. It is just Philips that wanted to force it on us, to make money, by making a cartel with Cree and other large lighting companies, and politicians and greenies.
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Ash
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Re: What if the blue LED never came to be... « Reply #2 on: October 30, 2017, 01:44:03 PM » Author: Ash
For the general lighting it would be all for the better : Fluorescent and CMH would be the main light sources in use and possibly better than they are now. Induction would be a close next. Maybe ESL would rise up

HPS would still be pushing everything else out on the roads

Flat panel applications would use CCFLs, EL and possibly Dielectric Barrier lights. Monochrome panels would use EL or some of the available color LEDs

Besides LCD, there would be PDP and maybe RP TVs, the latter would be with HID backlighting and LCD/DLP matrix

Most flashlights would be Krypton or Xenon filled Incandescent, not HID. Only the biggest ones would be HID. There would be some mid range Halogen flashlights too

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Re: What if the blue LED never came to be... « Reply #3 on: October 30, 2017, 03:56:16 PM » Author: Lumex120
tl:dr, the world would be a much better place for us lighting enthusiasts.
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Ash
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Re: What if the blue LED never came to be... « Reply #4 on: November 04, 2017, 05:45:02 AM » Author: Ash
For everyone except the LED manufacturers
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funkybulb
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Re: What if the blue LED never came to be... « Reply #5 on: November 04, 2017, 08:13:37 AM » Author: funkybulb
It would be like  going back to early 90s ,  prolly MV would still be made,  like ash  said be more CMH lighting.  Stores still have some of there high bay lighting.
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Lightingguy1994
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Re: What if the blue LED never came to be... « Reply #6 on: November 10, 2017, 01:15:12 AM » Author: Lightingguy1994
It would be so much better thats for sure. It would also make the phone industry a little different than it is now because they would need to have some other way to backlight their screens and phones made with AMOLED screens would likely not exist
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Ash
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Re: What if the blue LED never came to be... « Reply #7 on: November 10, 2017, 11:34:06 AM » Author: Ash
Not to the early 90s but to the likes of 2006/7. T5, Electronic ballasts, CMH, Induction, ESL..

I guess phones would use Cyan color EL panels for the screen backlight, and few of them would have an actual Xenon flash for the camera, though most would have just the camera with no flash at all

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Re: What if the blue LED never came to be... « Reply #8 on: November 10, 2017, 08:10:03 PM » Author: Lodge
Older laptop's and older LCD panels in general used to use florescent back-lighting you can get some pretty thin tubes, and for the camera flash, you don't need a flash if you use a Broad Spectrum Thin Film Array camera they will generate a full color image in 1 millilux conditions, so we might of gotten much better cameras with a 85,000 x luminance gain capability so you can go from looking at the sun to starlight conditions with out any issues...
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Re: What if the blue LED never came to be... « Reply #9 on: November 10, 2017, 11:51:48 PM » Author: Ash
The PMMA diffusers used with CCFL backlights would be too bulky for phone use. Mounting the CCFL in a way that it won't break if the phone falls could be a problem too
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Re: What if the blue LED never came to be... « Reply #10 on: November 11, 2017, 12:39:17 AM » Author: Lodge
You can get 1.8 mm tubes so the iphone might be 2 mm thicker, its still thinner then the Motorola brick phone I used to have, and definitely thinner then the really old XJ mobile VHF phone (which has much better coverage then any new cell phone ever made.)
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dor123
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Re: What if the blue LED never came to be... « Reply #11 on: November 11, 2017, 01:30:19 AM » Author: dor123
Phones that uses CCFL for backlighting, can have very short battery life. The reasons why the Sega Game Gear, Sega Nomad and the Atari Lynx, has a very short battery life compared to the Nintendo Gameboy, is because they had CCFL backlit LCD display, and not LCD DMD with depends on the outside lighting, like the Gameboy had.
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

HomeBrewLamps
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Re: What if the blue LED never came to be... « Reply #12 on: November 11, 2017, 09:28:05 AM » Author: HomeBrewLamps
That would likely get battery research and development on the priority list.
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Re: What if the blue LED never came to be... « Reply #13 on: November 11, 2017, 09:40:52 AM » Author: Ash
Battery research is allready on the priority list. The LED lighting used in the phones uses lots of power too, and then there are processors and communication (when using the phone for internet all the time)

Lighting technology aside, if the smartphones display would be designed more according to non-"white and shiny" thinking (think 90s thinking), the display backlight would be off-white (most likely Cyan), not as stupidly bright, just satisfactory for the application (for seeing the display well, not for using the phone screen as flashlight). The power usage would not be any higher than with current phones
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Re: What if the blue LED never came to be... « Reply #14 on: November 11, 2017, 01:24:46 PM » Author: MissRiaElaine
There were no reasons for the LED lighting to be a disruptive innovation for the electric lighting, as it have a lot of disadvantages over electric lighting. It is just Philips that wanted to force it on us, to make money, by making a cartel with Cree and other large lighting companies, and politicians and greenies.

The way I heard it (in Europe at least) is that the EU insisted that all street lights render a full range of colours. No idea if it's true, but if I know the EU I wouldn't put it past them.

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