China P43t Quartz or Schott Golden H4 Auto Halogen Headlight / Auto Bulb, Find details about China Auto Bulb, H4 Auto Bulb from P43t Quartz or Schott Golden H4 Auto Halogen Headlight / Auto Bulb
Schott glass main advantages compared with quartz glass bulb:
1. optical transmission . Good optical transmission makes it have more luminous flux than
quartz at the same power (watt). So it is brighter.
2.thermal expansion coefficient . Its thermal expansion coefficient is much closed to that of
molybdenum. So it works perfectly without the help of the molybdenum belt.
3. lamp protecting. For schott glass can filter out UV radiation, auto lamp can be protected
to a certain extent.
Model | Volts (V) | Watts (W) | Lumens (lm) | Base Type | Osram NO. | Philips NO. |
H4 | 12 | 60 55 | 1650±15% 1000±15% | P43t | 64193 | 12342 |
12 | 100 90 | 2300±15% 1500±15% | P43t | - | 12569 | |
24 | 75 70 | 1900±15% 1200±15% | P43t | 64196 | 13342 | |
24 | 100 90 | 2200±20% 1450±15% | P43t | - | 24569 |