HID Brightness Measure In Lumens

[siangmh]

I wonder:

1) When the light cut off become so precise (not dare to say perfect) (like those retrofit single projector with HID, cut off close to a horizontal line), will the light then able to shine on those reflective sign board that place higher up beside the road?

2) Is this d reason car with bi-xenon set on different angle?

3) And bcos of this, those OEM head lamp that have a single projector always combo with a halogen into one headlamp? So can let the halogen do the extra shining work? & the high beam work? (assuming OEM is single low beam only, correct?) Eg new Volvo (1 projector & 1 halogen), Benz also same.

4) My headlamp cut off is like a dual montain shape that slopes 45 degree from high left to low right, but highest also not higher than my knee when i am standing in front of my car, so wont glare ppl. But is this pattern "normal"?

5) Is this pattern meant for shining road side sign board?

 

[astalavista_baby]

I wonder:

1) When the light cut off become so precise (not dare to say perfect) (like those retrofit single projector with HID, cut off close to a horizontal line), will the light then able to shine on those reflective sign board that place higher up beside the road?

2) Is this d reason car with bi-xenon set on different angle?

3) And bcos of this, those OEM head lamp that have a single projector always combo with a halogen into one headlamp? So can let the halogen do the extra shining work? & the high beam work? (assuming OEM is single low beam only, correct?) Eg new Volvo (1 projector & 1 halogen), Benz also same.

4) My headlamp cut off is like a dual montain shape that slopes 45 degree from high left to low right, but highest also not higher than my knee when i am standing in front of my car, so wont glare ppl. But is this pattern "normal"?

5) Is this pattern meant for shining road side sign board?

1) Projectors also can produce cut offs with one part, either left or right depending on right of left traffic, higher. The higher part is meant for illuminating the road signs.

2) No idea.

3) single beam Xenon projectors will have a separate halogen reflector beside it to do the highlighting similar to those you see on Waja, Camry, Mercedes, BMW.

4) Yes, this is normal. The top part is to shine the signboards. The reason our left side is higher is because we are driving on the left side of the road and the top part will not glare oncoming traffic on the right. On right traffic countries, the top part will be on the right side. Proper beam alignment is dependend on the lower part. ECE standard dictates that headlamps up to 80 cm must aim their beam 3" downwards. 89-99cm must aim 4" downwards. Anything 100cm and above would have to aim 4.5" downwards. US DOT standard dictates that any headlamps must be aimed 2.1" downwards.

5) Yes.

 

[darrenpuah]

my HID brand is Bosch and doesnt come with glare shield. can i know where to get glare shield if doesnt come with the HID set? i ask several acc shop they dont sell the glare shield. :sad_smile: any shop or individual that sell the glare shield only? respect!!

Hi, We have selling the front cover shield, please call 0122775757 for more information. Thanks!

 

[siangmh]

Thanks Sifus for sharing ur valuable info!! Really appreciate it!! Thanks a million :>

 

[siangmh]

1) The cut off detemine by what factor?

2) Is it the projector lens in the front of the bulb? or

3) Is it the Bulb structure? be it H4 HID or H4 halogen. or

4) Is it the "frosted" / "Non-clear" head lamp cover, in the case of halogen reflector lamp?

or combination of 4) & 3) ?

5) Those retrofit single projector HID into wira/satria, if have very "straight" horizontal cut-off, like those pic shown by kevinc, will lost its abilities to shine on road signs?

6) Even if equiped with hi/low HID also means that they have to high beam the road sign every time they saw one? ridiculous, isn't it? (i'll also post this to DIY section thread: Retrofit Projector into Head Lmap, there a forumer "HHH" doing it, see what is his feed back then)

 

[astalavista_baby]

1) The cut off detemine by what factor?

2) Is it the projector lens in the front of the bulb? or

3) Is it the Bulb structure? be it H4 HID or H4 halogen. or

4) Is it the "frosted" / "Non-clear" head lamp cover, in the case of halogen reflector lamp?

or combination of 4) & 3) ?

5) Those retrofit single projector HID into wira/satria, if have very "straight" horizontal cut-off, like those pic shown by kevinc, will lost its abilities to shine on road signs?

6) Even if equiped with hi/low HID also means that they have to high beam the road sign every time they saw one? ridiculous, isn't it? (i'll also post this to DIY section thread: Retrofit Projector into Head Lmap, there a forumer "HHH" doing it, see what is his feed back then)

1) I am not too sure what your question is here.

2) Yes. It is hard to explain the projector optics. In fact, any optics for that matter is hard to explain. Please check this out for the optics question you have.http://en.wikipedia.org/wiki/Headlamp

3) No idea what you mean here too.

4) Basically each reflector and projector has its own purpose. The non clear reflector which we call the lens optic generally depends on the lens cover in front of it to disperse the light and focus the beam. The clear reflector a.k.a. diamond reflectors basically have the optics built into the reflector itself. The reflector is shaped and curved at precalculated segments to ensure that the light is properly reflected off its surface to the road. The projector works very similar to how our eyes work in terms of optics to shine the light.

5) Interestingly, I would like to know too. Any gurus mind to enlighten us?

6) Yes, so lets wait for some gurus to come clear this up.

Cheers.

 

[siangmh]

Sorry for the unclear questions, pls let me clarify a bit:

1) What are the factors that contribute/make out a particular cut off pattern?

~ Is it d bulb structure/design? or
~ the reflector structure/design? or
~ the "non-clear" lamp cover? or
~ the little "diamond cover"? (for "diamond" head lamp with clear lamp cover) or

Thanks again for answers, gurus!!

 

[WHITE_VIOS]

what car u drving...
your budget listed here first...
OEM set around RM500 rebadge can get here....
Than is projector which could hardly be find...
Only E46 more commend....
Others like ZKW,S2000,LS430 and TSX, which is the best projector in the world will cost u a bomb...
But E46 is good enough...
That answer your qs above...

 

[astalavista_baby]

Sorry for the unclear questions, pls let me clarify a bit:

1) What are the factors that contribute/make out a particular cut off pattern?

~ Is it d bulb structure/design? or
~ the reflector structure/design? or
~ the "non-clear" lamp cover? or
~ the little "diamond cover"? (for "diamond" head lamp with clear lamp cover) or

Thanks again for answers, gurus!!

First the light source must be at the correct point. The optics of the reflector/projector is designed based on where the light source is coming from. So the design of the light source will determine whether or not the beam pattern reflected off the surface of the reflector would be good.

The curvature of the reflector will the reflect the light to the ground. The curves are created at certain points to ensure that lights are reflected downwards to prevent glare. Reflectors almost never have a sharp cut off. You will tend to see slight dim light above and below the bright area of the light.

"The non clear" lamp cover works the same way a reflector works except that now, the cover is doing its job in reflecting the light downwards instead of the reflector it self.

The projector basically has a shield to prevent unwanted glare and also the optics will do its job in projecting a beam pattern that is straight and downwards.

If you would refer to the link I gave on the previous post, you'd learn how light is being distributed by the different reflector/projector to produce proper beam pattern for the headlamp. Basically all components including the bulb and projector/reflector play a role in producing proper cut off pattern. Screw up any of this and you end up with bad beam pattern.

In case you are asking about how the flat cut off with a 45 degree angled upward light beam on the left is produced, the reflector/projector is designed as such that it reflects part of the light that way.

Ever noticed some people changing their headlamps to "crystal" headlamps and end up with very bad light dispersion? Its like as if the light is all concentrated on 1 area and is not dispersed evenly. Very very bad lighting. That is the result of badly designed reflector optics. Even if the bulb is OEM, it will still give you very bad patterns. That is the reason some people have their headlamps adjusted to the lowest which gives them very short lighting distance. I hope this answers your question. :)

 

[YuJi]

Yo Bro wanna ask few question

1) How much money need to spend to make honda city'06 retro light?
2) How much is a complete set of HID cost?

Thx so much

 

[siangmh]

Thanks again sifu, realy good & "refreshing (my mind)" write up.

Soli i never learn enough :P

 

[astalavista_baby]

Yo Bro wanna ask few question

1) How much money need to spend to make honda city'06 retro light?
2) How much is a complete set of HID cost?

Thx so much

1) I have never done retrofitting so I am not sure on this one. Anyone here knows?

2) A complete HID kit can vary from as low as RM500 all the way up to RM3000, depending on how much you are willing to spend. Basically go for Philips or Osram. If you have to mix and match go for Philips bulb as the colour is whiter and nicer and go for reputable ballasts. There are a lot out there, Philips, Osram, Bosch, Hella, Valeo, etc. to name a few.

 

[astalavista_baby]

Thanks again sifu, realy good & "refreshing (my mind)" write up.

Soli i never learn enough :P

Who you calling sifu? lol. We are all here to learn. haha...

Well, glad you learned something. So are you intending to fit Xenons on your car?

This is just an example of how my Xenons look like. 6000K colour temparature.

 

[YuJi]

1) I have never done retrofitting so I am not sure on this one. Anyone here knows?

2) A complete HID kit can vary from as low as RM500 all the way up to RM3000, depending on how much you are willing to spend. Basically go for Philips or Osram. If you have to mix and match go for Philips bulb as the colour is whiter and nicer and go for reputable ballasts. There are a lot out there, Philips, Osram, Bosch, Hella, Valeo, etc. to name a few.

Thx for the answer. Can Name me a few reliable brands? Thx

 

[astalavista_baby]

I have heard of a few reputable brands but I haven't personally tested any of them. Aura XT, Imperial Light and Giant Light HIDs are all quite good. Last I asked, Giant Light was above RM 2000 because they utilize Philips rebased bulb as well as Philips ballast. The rest are within the range of RM1000-2000. Hi/Lo sets will cost more. :)

 

[siangmh]

My "dream" set up:

1) Change head lamp to those reflector + projector(w/o ccfl ring) head lamp (i saw theres such a type for wira/satria, but very rare, probably bcos of high price)

2) Get a Low Beam only 4100~4300k HID

3) Get professional HIDseller to install & adjust the light beam.

4) May or may not change the projector to E36 projector, if the factory projector is too lousy.

But then, me now still searching for more details of that type of head lamp....i heard its about 1k for it.....dunno true or not...

 

[siangmh]

My "down-to-earth" more realistic set-up:

1) Get a 4100~4300k low beam only HID to fit in the existing non-clear reflector & get it adjusted nicely

or

2) Get a Hi Beam Halogen / Low Beam HID as alternative

 

[siangmh]

Some questions:

For those projector + reflector head lamp:

1) What is the function of that reflector? for "small light" / city light only? or is it normal 55W/60 H4 bulb that do hi/low beam?

2) What is the function of that projector? for low beam only?

3) How High Beam (ie "flashing") can be done on this type of head lamp?

4) Total current consumption of both high & Low beam + city light?

 

[astalavista_baby]

Some questions:

For those projector + reflector head lamp:

1) What is the function of that reflector? for "small light" / city light only? or is it normal 55W/60 H4 bulb that do hi/low beam?

2) What is the function of that projector? for low beam only?

3) How High Beam (ie "flashing") can be done on this type of head lamp?

4) Total current consumption of both high & Low beam + city light?

1) The reflector is basically used to provide high beam. The "small light" is normally located in the reflector as well. In the case of BiXenons, this can be used as fog light i guess, but would have to be adjusted if it was meant fir high beam.

2) The projectors basically provide you wit the dipped beam only unless its Bi Xenon.

3) Refer to item 1.

4) I am not sure about BiXenons but in the case of a Xenon projector dipped beam and a halogen reflector high beam with a city light, it should be the following per headlamp.

Xenon dipped beam = 35W
Halogen High Beam = 55/60W
City light = 5W
Total = 95/100W

A pair of headlamp would therefore consume about 190/200W of power. Correct me if I am wrong here.

 

[siangmh]

wow! that a lot of current there........cant be true right?

or maybe:

With HID: Normal night driving:
35W (projector's HID low beam) +
55W (reflector's halogen low beam) +
5 W (reflector's "small light")
= 95W

With HID: Normal night driving + "Flash":
35W (projector's HID low beam) +
60W (reflector's halogen low & high beam together) +
5 W (reflector's "small light")
= 100W

Even then, if 95W also too high for existing bulb socket & wire, one would definately need to add relay/fuse & change to thicker wire, right? bcos std H4 halogen consumed around 60W only.

Please advise, sifus. Thanks in advance.