#16
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By "orange" I think Electronic M probably meant warm white (is that correct, or really orange?).
Regarding failure: White LEDs consist of a blue LED chip with a phosphor to fill in the rest of the spectrum. It is possible for the phosphor to degrade over time, changing the color of the light somewhat. Some white LED backlight strips for LCD monitors/TVs have shown a failure mode in which some individual LEDs become dark blue. This has been discussed online (here or on YouTube, I don't recall), but I have not seen an explanation of the failure mechanism. |
#17
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Here in the Netherlands it does go wrong, LED street lighting changes color. Street lighting here with the option of various light colors, white to amber. Sometimes when the settings are lost you get different light colors in the street. Filters also come loose, causing the blue light to reach the street. With mercury and sodium you will get few color deviations, only at start-up.
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#18
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Quote:
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#19
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Quote:
jr |
#20
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This is a separate option, so not in all fixtures. With a computer you can control the strength of the light between the amber and the white LEDs.
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Audiokarma |
#21
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Quote:
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#22
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Question: do they ever change the color by time of night, for example, whiter for better visibility in the early evening traffic, then amber for sleeping hours?
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#23
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Here in the Netherlands there are streets in the evening and in the morning where the fixtures give white light and at night to amber. These can be programmed, but can also be controlled remotely via wireless telephone network. It is an expensive system, which means that it is not widely used. In a village nearby, the street lighting is mostly set to amber during the Christmas season.
There is much more. https://www.youtube.com/watch?v=a-WvawLns6c Last edited by marcel; 03-30-2022 at 01:27 PM. |
#24
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Quote:
Why take something that works perfectly and replace it with garbage!!! -- WAIT I KNOW THE ANSWER!! I hope they dont ever change them............ |
#25
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L.E.D., per se, it isn't crap. But some administrations are choosing the cheap ones, sometimes this meaning not only bad qualty, but also ugly color temperature. I don't know why they are so stupid.
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Audiokarma |
#26
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The big problem with LED here is a lot of the cheap ones don't survive. They'll start out bright with a good color temperature then within a year they'll start turning blue or purple....Throw in some fog and suddenly night driving has an unwelcome horror movie aesthetic.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#27
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Quote:
science knowledge. Also no understanding of the common man. 73 Zeno LFOD ! |
#28
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So poor qualty of them is a problem in U.S.A. too...
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