Is it true that xenons get bluer with age?
10-24-2002, 05:40 AM
#4
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Um, Sorry, but yes they can
If the bulb develops a leak and xenon (or whatever gas is in there) leaks out, the bulb will take on a bluer color.
This is not to say that it always happens, but it is certainly likely that in older bulbs, some xenon will have leaked and made the projected light look bluer.
This is not to say that it always happens, but it is certainly likely that in older bulbs, some xenon will have leaked and made the projected light look bluer.
10-24-2002, 07:08 AM
#5
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Leaking HID bulb? It would explode first, they are under pressure. You have got some bad info.
And the bulb will not take on a bluer color because HID companies coat the bulb with a ceramic based blue filter to get blue light.
Want proof?
McCulloch
XenonTechnologies
XenonDepot
K2
All of them coat the bulbs to achieve a blue color. If all it took was less or no xenon gas I am sure they would go that cheaper route.
Want proof?
McCulloch
XenonTechnologies
XenonDepot
K2
All of them coat the bulbs to achieve a blue color. If all it took was less or no xenon gas I am sure they would go that cheaper route.
10-24-2002, 08:43 AM
#7
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Sorry dude, you are off base here
A few things:
First, reputable light companies do *not* coat their HID bulbs. Only aftermarket companies seeking a "bluer" light do that, whether it be halogen or HID. In your links, I only saw one company that did it (xenondepot). They took a regular Sylvania bulb and coated it blue to give the appearance of a bluer light. The OEMs of these bulbs (in this case Sylvania) do not coat them at all. The picture is self-evident: they show a normal, uncoated Sylvania bulb next to their (xenondepot) coated one.
Second, your assertion that bulbs cannot leak becuase they are under pressure is patently absurd. They can and do leak; see the link I posted under the PDF entitled "Xenon bulb failure analysis". You will note that when the bulbs leak, the flame takes on a bluer color.
You can't use "less or no xenon gas" because of the way HID bulbs operate. They are like neon lights in that they apply very high voltage to a gas to cause it to turn to plasma and glow. If there were no xenon gas in a HID, it would not work at all. If there were less than intended, the light would look bluer, but the bulb would burn out quickly since they reaction is not working as intended.<ul><li><a href="http://www.xenonbulbs.com/">http://www.xenonbulbs.com/</a></li></ul>
First, reputable light companies do *not* coat their HID bulbs. Only aftermarket companies seeking a "bluer" light do that, whether it be halogen or HID. In your links, I only saw one company that did it (xenondepot). They took a regular Sylvania bulb and coated it blue to give the appearance of a bluer light. The OEMs of these bulbs (in this case Sylvania) do not coat them at all. The picture is self-evident: they show a normal, uncoated Sylvania bulb next to their (xenondepot) coated one.
Second, your assertion that bulbs cannot leak becuase they are under pressure is patently absurd. They can and do leak; see the link I posted under the PDF entitled "Xenon bulb failure analysis". You will note that when the bulbs leak, the flame takes on a bluer color.
You can't use "less or no xenon gas" because of the way HID bulbs operate. They are like neon lights in that they apply very high voltage to a gas to cause it to turn to plasma and glow. If there were no xenon gas in a HID, it would not work at all. If there were less than intended, the light would look bluer, but the bulb would burn out quickly since they reaction is not working as intended.<ul><li><a href="http://www.xenonbulbs.com/">http://www.xenonbulbs.com/</a></li></ul>
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10-24-2002, 11:21 AM
#8
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Yes, they will! But not very noticable unless you replace one of them, then it stands out.
The color change is commonly known as "Xenon color shift". The new bulb will be yellow compared to the white/blue older bulb (with many hours on it), even if they're from the exact same brand and batch.
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