Mtrhd0024
Well-Known Member
- Joined
- Mar 5, 2009
- Messages
- 192
- Vehicle Year
- 1990
- Transmission
- Manual
There is a misunderstanding about projectors being the solution to HID issues (glare, etc.) Yes, there is a "sharp cut off", but that's created by an internal metal plate in the housing. The reflector is still calibrated for a halogen bulb. Here's a little-observed point about HIDs (no matter the headlight type):
"But what about all the rave reviews you read in magazines and on Usenet about how marvelous HID headlamps are? Well, here's the double whammy of high levels of foreground light: When you can see every last pebble in the road, all the way across, it's very comforting. You don't have to strain to see what's immediately in front of the vehicle. And the most recent research seems to be suggesting that this, to an extent, improves driver performance at night, possibly because with the foreground adequately illuminated, we tend to trust our peripheral vision to handle the foreground, and keep focussed out in the distance where we should be looking. (See above comments regarding too-low levels of foreground light in many US headlamps...). BUT, foreground illumination is *only one* performance aspect of a headlamp, and it's very, very easy to judge a headlamp "good" because of very strong foreground light, when in fact the distance vision isn't so grand. In short (finally!) an HID headlamp has a strong tendency to create a false sense of security."
I agree that projectors aren't the magic answer to HID problems, HOWEVER, the majority of Projector housings (whether they were designed for HID or not) tend to do a much better job of reducing glare that is commonly associated with aftermarket HID kits. You don't actually need to have projectors to properly focus HID light, you just need to have a reflector that is properly focused for the HID bulb. This is why Hella gets away with having HID driving lights which simply use reflectors.
I also believe the statement you posted about HID's creating a false sense of security is true. When people can see better directly in front of them, they do gain a false sense of security. This is why installing brighter bulbs in your headlights is not necessarily going to make you see perfectly at night.
This is where auxiliary light comes into play. You need driving lights or similar long distance lighting to illuminate the road way out in front of you. Your headlights can only do so much. This is why I'll soon have HID driving lights mounted to the front of my truck. Yes I've upgraded my headlight housings and bulbs, but they still only illuminate so far in front of me. My driving lights illuminate where my headlights leave off, clearing the road hundreds of feet in front of me.
This applies, projector housings or otherwise. It has been compared to putting someone else's prescription glasses - you might be able to see, but not properly.
Good analogy!
Yep, you got it! I too like the LED lighting technology. But LEDs are not quite "there" yet to use in certain applications, such as automotive.
LED lighting is definitely the future, however its certainly only just coming onto the scene with regards to automotive applications. The advantages of low power consumption, bright white light, and low heat are all significant, but LED's are still new to the automotive world. The only car I can think of that offers LED lighting as an option is the new Prius. Its a start, but there's still a ways to go with regards to that technology! For now anyway, HID is the "low heat, low power consumption, extremely bright" solution that everybody wants in their car.