Increasing flood

Lightbringer · 2019-09-26T17:56:15.000Z

You can take small patches of stick-on diffusion film and apply them in places to selectively scatter light.

Some film is really diffusey and scatters well, others only a bit, like the difference between smooth and orange-peel reflector.

Using DF like that, you don’t have to mess with the innards of the light, and it’s completely 100%ly reversible.

slopegatri70 · 2019-09-26T19:21:23.000Z

Lightbringer:

You can take small patches of stick-on diffusion film and apply them in places to selectively scatter light.

Some film is really diffusey and scatters well, others only a bit, like the difference between smooth and orange-peel reflector.

Using DF like that, you don’t have to mess with the innards of the light, and it’s completely 100%ly reversible.

Oh, i have tried it once. unfortunately it lowers intensity too much and makes it almost unusable.

i guess i should go with XHP50 3v or XHP35HI or something. maybe a HIGH CRI led ?

Lightbringer · 2019-09-26T19:34:22.000Z

To get more light where it’s not going now, but still keep the intensity that you want, you’d need to dramatically increase total light output, then. Twice the lumens only shows maybe 30% brighter, visually.

So, a bigger chip would be a wider hotspot, but intensity would decrease.

High-CRI, just like warmer CTs, would mean less efficiency and less total light output.

Ironically, Angry Blue would be more efficient, albeit look hideous.

Dunno if that answered anything, but those are things to keep in mind.

Yokiamy · 2019-09-26T19:40:42.000Z

Maybe uh XPL2 HD?
Wow, did i really say that?

slopegatri70 · 2019-09-26T19:44:20.000Z

hmm, so which 3v led has maximum output @1.5A ? xpl2 hd ?

Yokiamy · 2019-09-26T19:51:42.000Z

LED test / review - Cree XLamp XP-L2 V5 40E & U6 40H 90 CRI – High light flux and low Vf, but very huge spread in performance Flashlight Modding and DIY Parts

LED test / review EN Cree XLamp XP-L2 XPLBWT-00-0000-000BV540E (4000 K 70 CRI) XPLBWT-00-0000-000UU640H (4000 K 90 CRI) In September 2016, Cree released the next generation of XP-L, the XP-L2. The manufacturer claims that lumen density, voltage characteristics and reliability has to be improved. August 2017 I tested this LED already, you can find this outdated test in the german TLF. This test is different from my first test in the TLF. My measurements are more ac…

Maybe other members have other proposals?

clemence · 2019-09-26T20:35:03.000Z

Easy fix: make a small diffuser from lapped PMMA place directly on top the LED. Adjust the lapping grid to your liking. Coarser = wider beam
Harder fix (less light loss): change to bigger LED or several LEDs. Osram, Lumileds, and Nichia make such automotive LED with several option from single small point source to linear array. In my scooter case, I swap the 1mmx1mm Stanley LED to E21A and later to 319A. I faced similar problem with you, not enough side light for navigating in fast cornering situation.

[Clemence]

clemence · 2019-09-26T20:38:00.000Z

I haven’t update my thread. Now I use 319A with much bigger die. E21A creates more flood but wasn’t enough. With 319A It’s almost perfect although the hotspot brightness reduced significantly compared to original Stanley LED.

[Clemence]

slopegatri70 · 2019-09-27T06:46:28.000Z

hmm, just saw your thread. it’s pretty much what i want. stock headlight is pretty much crap. YAMAHA should be ashamed.

btw, i saw some 2x-4x leds arrays on aliexpress. from Osram CFLNM1, CHLNM1.TG. would those leds work better than 319A ? although it will require additional heatsinking. but i was wondering if i could increase flood without lowering intensity that much by using those 2x/3x led arrays.

thanks for your thread btw, it’s really helpful.

clemence · 2019-09-27T13:45:24.000Z

slopegatri70:

hmm, just saw your thread. it’s pretty much what i want. stock headlight is pretty much crap. YAMAHA should be ashamed.

btw, i saw some 2×-4x leds arrays on aliexpress. from Osram CFLNM1, CHLNM1.TG. would those leds work better than 319A ? although it will require additional heatsinking. but i was wondering if i could increase flood without lowering intensity that much by using those 2x/3x led arrays.

thanks for your thread btw, it’s really helpful.

Most road legal motorcycle/car front lighting is a compromise between driver’s safety and other road user’s safety. So, max visibility at the driver’s side could be minimum visibility/blindness for others. Sharp cut-off, beam pattern, and max lux hitting the road regulated by each country rule. Please modify your headlight responsibly! Use common sense, even without standardized equipment you can tell if your modification is potentially dangerous to other or not by simply test it. Ask your friend to ride it while you’re pretending to be a pedestrian or other road user.
Modifying front light type like ours is relatively easy in concept, very doable, and safer because the reflector designed for minimal glare and very sharp cut-off. So, as long as you aim your headlight properly it should be OK for road use. Your headlight has more potential than mine. Please post more pictures from different angles. I need to see the installed position of the whole reflector - LED assembly.

[Clemence]

slopegatri70 · 2019-09-27T19:35:25.000Z

clemence:

Your headlight has more potential than mine. Please post more pictures from different angles. I need to see the installed position of the whole reflector - LED assembly.

[Clemence]

Will these help ?

^ high beam @ 10 feet.

^ low beam @ 10 feet. 2x black flat leds.

high+ low beam. see how pathetic it is. :person_facepalming:

clemence · 2019-09-27T19:54:50.000Z

I’m still working at the moment. Will get back to you in about 2 hours. I checked all your images and it’s (relatively) easy to fix as long as you have access to all the components.

[Clemence]

clemence · 2019-09-27T23:08:49.000Z

Does the low beam positioned on top? Normally, with this kind of reflector, the LED source shooting downwards for low beam. The reason is to create a very sharp cut-off. Pretty common for all Stanley headlamp. Honda and Yamaha almost exclusively rely on Stanley for all their lighting system.

The low beam looks pretty decent for me. With correct aim, this profile should creates an evenly lit area. Notice the nice gradual intensity in the vertical axis. But, horizontally, the hot spot is too narrow. adding more LED in parallel (halving same current) will cure the problem easily.

The high beam looks bad indeed (too narrow). the beam angle coverage looks good for approx. 100m but at that range it’s too dim. Am I correct? Most Stanley motorcycle headlight has common problem: the high beam profile although good on it’s own, doesn’t angled adequately to cover more horizontal/vertical area in low to medium speed driving distance (< 100m). This makes setting for optimal high beam position makes the low beam to high (and glares other road users), and vice versa.

Hahaha, this is a subtle OEM “night speed control”

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[Clemence]

slopegatri70 · 2019-09-28T04:54:46.000Z

clemence:

Does the low beam positioned on top?

Yes, low beam is on top, high beam on bottom.

The low beam looks pretty decent for me. With correct aim, this profile should creates an evenly lit area. Notice the nice gradual intensity in the vertical axis. But, horizontally, the hot spot is too narrow. adding more LED in parallel (halving same current) will cure the problem easily.

So, i should go ahead with 2 led array for this ? or 2mm osram white flat ? main limitation here is heatsink. it can take upto 18w as per my testings.

The high beam looks bad indeed (too narrow). the beam angle coverage looks good for approx. 100m but at that range it’s too dim. Am I correct?

yep. for short distance it’s good. but really weak for anything over 60-70 mtrs.

, this is a subtle OEM “night speed control” :laughing:

clemence · 2019-09-28T12:03:13.000Z

White flat should be easier to begin with. You can easily revert to OEM. 2X array could be decided later if you think white flat is not large enough.

[Clemence]

Macka17 · 2019-09-29T02:11:29.000Z

I don’t know if this a enclosed bike front or open frame/forks.

Low looks fine.
Just buy a 8/12in multi spread bar for 4wd. outers spread. centre spot.
Install on bike wired into High beam sw.
Best of both worlds.
I have LED lights in front of both cars (exchanged) with 18in bar on front wired to high.

Turn that on. the whole planet in front of you lights up. Forever.
Best thing you can install on any wheeled vehicle.
as long as YOU use it sensibly.
Quadruples the light output of any vehicle.

slopegatri70 · 2019-09-29T02:44:23.000Z

Macka17:

I don’t know if this a enclosed bike front or open frame/forks.

Low looks fine.
Just buy a 8/12in multi spread bar for 4wd. outers spread. centre spot.
Install on bike wired into High beam sw.
Best of both worlds.
I have LED lights in front of both cars (exchanged) with 18in bar on front wired to high.

Turn that on. the whole planet in front of you lights up. Forever.
Best thing you can install on any wheeled vehicle.
as long as YOU use it sensibly.
Quadruples the light output of any vehicle.

Already have that (also working on another mod for those with reduced glare) but it produces too much glare for inc traffic and it’s illegal in city. cops have starting hunting for those lights recently that’s why i want to mod headlight instead. because beam profile won’t be changed just output will be increased.

slopegatri70 · 2019-09-29T03:07:03.000Z

clemence:

White flat should be easier to begin with. You can easily revert to OEM. 2X array could be decided later if you think white flat is not large enough.

[Clemence]

The led should be wider in reflector (#1 in below picture), right ? but the way current leds are soldered, 2mm white flat will sit like #2 in below picture -

clemence · 2019-09-29T03:32:39.000Z

slopegatri70:

clemence:

White flat should be easier to begin with. You can easily revert to OEM. 2X array could be decided later if you think white flat is not large enough.

[Clemence]

The led should be wider in reflector (#1 in below picture), right ? but the way current leds are soldered, 2mm white flat will sit like #2 in below picture -

Not a problem. Ideally, they should be longer to the sides but any increase in die size will make it floodier anyways. You can also test by piggy back any new MCPCB on top the OEM MCPCB. Try to reorient it as required for best position and focus before final modification. Use low power input just enough to check the beam profile. After testing you should get more hold of what to do next

[Clemence]

slopegatri70 · 2019-09-29T03:53:48.000Z

clemence:

Not a problem. Ideally, they should be longer to the sides but any increase in die size will make it floodier anyways. You can also test by piggy back any new MCPCB on top the OEM MCPCB. Try to reorient it as required for best position and focus before final modification. Use low power input just enough to check the beam profile. After testing you should get more hold of what to do next

[Clemence]

Got it, thanks.