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:Experiences with Philips Ultinon HID bulbs
Some people might say, "oh no, not another blue bulb!". Have the blue bulb "scam" finally hit the real HID market? The original Philips Ultinons made in Germany have equal quality, like the standard Philips D2* bulb. Appearntly, there are other blue HID bulbs made other places in the world that doesnt have the same quality. So be aware what you are buying. As with Philips OEM standard bulb, the color of Philips Ultinon HID bulb is different in different housings. Some housings might not show much difference at all, others will look more blue. These are observations when standing in front of the car looking into the headlights. They will never appear as blue as an average blue halogen bulb you can get evrywhere nowadays. The people that do report them to be different, says that the light you see from your drivers seat is just whiter. If you have seen the OEM HID in a older BMW 750i, thats how blue they can get. In other words "OEM blue". These are subjective observations and we should always keep in mind that real life comparison of brightness (lm) with naked eye is not possible. Human eye gets confused when color(K) is different. How to recognize the real Philips Ultinon HID bulb from a clone?
There are several indications. One of them is that they are only made in Aachen, Germany. They are not made or made under license anywhere else. The rest of the properties are shown in this picture. It shows the D2S version of it. Rebased bulb might lack the text on the base. Custom base will lack the entire base. The remaining properties will still be valid. The hard facts on Ultinon:
Marketing names: "Ultinon", "Cool Power" and "Cool White" are all the same D2 lamps.
The Ultinon and standard lamps are identical with the visible exception of the 'salts' colour in the burner and the ceramic insulation on the earth return lead. Some aftermarked vendors market Ultinon as a brighter bulb than a standard D2. This is not true:
OEM Philips D2S is 3200lm bright (+/-450lm) and 4100K colortemp (0.380x 0.390y).
Philips Ultinon D2S is 2400lm bright (+/-250lm) and 5800K colortemp (0.327X 0.312Y). [ http://faq.auto.light.tripod.com/general-faq.htm ]
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