nocte-diem
Newly Enlightened
- Joined
- Jun 7, 2016
- Messages
- 9
Are the beam cut-off and cut-off shape (ramps, steps, or straight) created by the reflector itself or by the bulb shield? Or is it done differently altogether?
Are the beam cut-off and cut-off shape (ramps, steps, or straight) created by the reflector itself or by the bulb shield? Or is it done differently altogether?
I assumed the question was asked referring to the bulb shield in a reflector lamp assembly, not the small shield in an H4. That's not really a "bulb shield" (in the shower this morning, it dawned on me that DUH it's a filament shield), since it doesn't shield the bulb from direct view.The black tip of a bulb is for blocking direct glare. But if you look at the shield alongside the low beam filament in an H4 bulb, you will see it has something to do with beam pattern.