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<blockquote data-quote="saat" data-source="post: 106654" data-attributes="member: 77"><p>Valkryie,</p><p></p><p>I think there are 2 subjects being discussed here. The following is my understanding.</p><p></p><p>Firstly Projector Head Lamps: These are new lamps or more correctly head lamp units where the ellipsoidal lamp reflectors are greatly reduced in size. The reduced reflector size now creates another challenge. The typically required light pattern in front of the car cannot be maintained. To counter this, the makers put in a lens in front of the bulb to recreate the pattern. The lens has been improved such that the light throw is much further and the spread and pattern is much more focussed and controlled. This small reflector with a lens and the more controlled focus of the light has been dubbed “Projector Head Lamps” (like the LCD projectors). Another challenge this produce and resolved is one of heat buildup with the reduced cavity inside the headlamp.</p><p></p><p>I think car manufacturers (or more correctly lighting technologist) have resolved what started as a styling and packaging requirement with a solution that produced an significant advancement in lighting technology. Some say it is the other way around where the lighting advancement in reducing the size and profile of headlamps has liberated newer styling and packing opportunities.</p><p></p><p>Therefore, if your headlight unit has a clearly visible lens in front of the bulb, then chances are you have a projector headlamp. Do not confuse this with a diamond like piece of metal that placed in front of the bulb, these are not projector headlamps. Normal halogens (as in the E39) can be fitted to the projector headlamps. By the very nature of the construction of the Xenon (or HID) lights, they are typically fitted onto projector headlamps in order to achieve the correct light spread pattern.</p><p></p><p>CKD E46 do not have projector headlamps as standard. Only those with factory fitted with Xenons (some CBU and late model 325 and 330) has projector head lamps. Face-lifted E39 (post 2001) has projector headlamps fitted as standard.</p><p></p><p>I need to rush out now, so I will post the Xenons and Bi-Xenons (or more appropriately HIDs) when I come home later.</p><p></p><p>But just as a parting shot, Bi-Xenons are made in Punjab.........</p></blockquote><p></p>
[QUOTE="saat, post: 106654, member: 77"] Valkryie, I think there are 2 subjects being discussed here. The following is my understanding. Firstly Projector Head Lamps: These are new lamps or more correctly head lamp units where the ellipsoidal lamp reflectors are greatly reduced in size. The reduced reflector size now creates another challenge. The typically required light pattern in front of the car cannot be maintained. To counter this, the makers put in a lens in front of the bulb to recreate the pattern. The lens has been improved such that the light throw is much further and the spread and pattern is much more focussed and controlled. This small reflector with a lens and the more controlled focus of the light has been dubbed “Projector Head Lamps” (like the LCD projectors). Another challenge this produce and resolved is one of heat buildup with the reduced cavity inside the headlamp. I think car manufacturers (or more correctly lighting technologist) have resolved what started as a styling and packaging requirement with a solution that produced an significant advancement in lighting technology. Some say it is the other way around where the lighting advancement in reducing the size and profile of headlamps has liberated newer styling and packing opportunities. Therefore, if your headlight unit has a clearly visible lens in front of the bulb, then chances are you have a projector headlamp. Do not confuse this with a diamond like piece of metal that placed in front of the bulb, these are not projector headlamps. Normal halogens (as in the E39) can be fitted to the projector headlamps. By the very nature of the construction of the Xenon (or HID) lights, they are typically fitted onto projector headlamps in order to achieve the correct light spread pattern. CKD E46 do not have projector headlamps as standard. Only those with factory fitted with Xenons (some CBU and late model 325 and 330) has projector head lamps. Face-lifted E39 (post 2001) has projector headlamps fitted as standard. I need to rush out now, so I will post the Xenons and Bi-Xenons (or more appropriately HIDs) when I come home later. But just as a parting shot, Bi-Xenons are made in Punjab......... [/QUOTE]
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