My W30 fell apart

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grin
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My W30 fell apart

Seems my W30 fell apart and i cant get it back together


It costs a bit more than a cft-90 led and driver. it will be interesting to see how it goes behind a big aspheric. Not sure what driver to use yet or just just use the original. i have a marinebeam light on order. just need a good pair of safety googles now

amishbill
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I hate it when the front falls off. Party

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

grin
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Here is a bit more sorry about the photo quality

There is a small PCX lens with belly out over the phosphor

I am fairly certain the diode id behind the phosphor the mirror is the beam dump and directs the coherent light to the side.

I dont want to power it up out of the light to take current readings because i dont have safety gear yet

Agro
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Thanks for the photos. Could you please do some lens photos as well?

grin
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Lens is a plastic double convex scratches easily or im just clumsy

grin
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Just ordered another one incase i destroy this one. Is the lens on the phosphor a precollimator? Do i need the beam dump if i handle it like a laser? Do i swap the laser for a more powerful one or over drive the original? Do i use a 127mm double convex or a 178mm PCX?

The_Fat_Controller
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Ive been conidering trying a few experiments with home brew LEP I have several high powered lasers kicking about (my other hobby) and ive been wondering about firing up a Dedomed emitter with a collimated coherent beam .. little bit concerned about going blind though i do have some bar&stroud goggles

will be following this post with interest , how are they directing the beam into the phosphor?, I assume its not tightly collomated (else it would burn through the phosphor) either that or they have used a low powered blue on a TTL pulse ??

Lots of things you could try here

Edit: i dont see any lens between the diode mirrors and phosphor ??

Rayoui
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I may be wrong, but I don’t believe the diode is below the phosphor. That lens next to the phosphor is the laser which points forward (toward the aspheric lens at the front of the head) and the two mirrors direct the laser down onto the surface of the phosphor.

Please excuse my extremely crude drawing.

Agro
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I’ve seen many people more knowledgable than me mentioning that for proper throw a lens shall be plano convex or concave convex.
It’s curious that they used double convex.
Does anyone have an explanation for that?

BTW…I wonder if one could use a collar to improve performance and efficiency. Fitment issues aside – it should work with precise enough placement.

Rayoui – your drawing is correct.

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Hmm R025 resistor…. Evil

KB1428 “Live Life WOT

The_Fat_Controller
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Agro wrote:
I’ve seen many people more knowledgable than me mentioning that for proper throw a lens shall be plano convex or concave convex. It’s curious that they used double convex. Does anyone have an explanation for that? .

Possibly Yes. In lasers the light from the diode exits almost straight so the optic really just needs to true the beam up a little (double convex) to keep it parallel (collomated)

with LED the light from the emitter exits at quite a wide angle with considerable divergence, the lens really has to make a massive adjustment to get it even close to parallel its not true collomation and should really have a second double convex lens after the aspheric to fully collmate the light. this is why you will always have the beam diverging the father it gets away

In LEP i believe because the phosphor is being excited from the top emitting side the light has way less divergence probably not as a tight as a laser diode but a good deal tighter than a conventional LED so they are able to collomate it properly with a double convex

grin
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Eye protection is a must, you could put an eye patch on then you will only damage one eye. I AM JOKING!!
i was thinking about hitting a dedomed led with a laser. XPL or XHP35 HI would be the best to start with.
It looks like the diode is soldered into the centre of the PCB and the dump is to the side. might have a few jack daniels for courage and desolder it.
The plastic lens is probably lighter and cheaper and i think the beam could be made tighter with a different lens
Enderman posted links explaining aberration in the 2 lens types remember seeing them but dont know where.

grin
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KawiBoy1428 wrote:
Hmm R025 resistor…. Evil

Correct do you think a resistor mod is the way to go? i can do the mod on this driver and do a swap, the new one should be here by friday. Also have a new laser distance meter coming for measurements
grin
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Rayoui wrote:
I may be wrong, but I don’t believe the diode is below the phosphor. That lens next to the phosphor is the laser which points forward (toward the aspheric lens at the front of the head) and the two mirrors direct the laser down onto the surface of the phosphor.

Please excuse my extremely crude drawing.
!https://live.staticflickr.com/65535/48908123737_737cec6f61_o.jpg!

I was wrong you are correct

grin
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BTW…I wonder if one could use a collar to improve performance and efficiency. Fitment issues aside – it should work with precise enough placement.

I have ordered a marinebeam for the collar i was thinking it was a gimick although i am probably wrong.

The_Fat_Controller
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grin wrote:
Rayoui wrote:
I may be wrong, but I don’t believe the diode is below the phosphor. That lens next to the phosphor is the laser which points forward (toward the aspheric lens at the front of the head) and the two mirrors direct the laser down onto the surface of the phosphor.

Please excuse my extremely crude drawing.
!https://live.staticflickr.com/65535/48908123737_737cec6f61_o.jpg!

I was wrong you are correct
!{width:90%}https://i.imgur.com/LRiZYhh.jpg!

I believe this is to prevent dangerous Coherent laser emission from the business end of the light Cool

grin wrote:
BTW…I wonder if one could use a collar to improve performance and efficiency. Fitment issues aside – it should work with precise enough placement. .

See my earlier post , not convinced this will have much effect on this setup

grin
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The_Fat_Controller wrote:
grin wrote:
Rayoui wrote:
I may be wrong, but I don’t believe the diode is below the phosphor. That lens next to the phosphor is the laser which points forward (toward the aspheric lens at the front of the head) and the two mirrors direct the laser down onto the surface of the phosphor.

Please excuse my extremely crude drawing.
!https://live.staticflickr.com/65535/48908123737_737cec6f61_o.jpg!

I was wrong you are correct
!{width:90%}https://i.imgur.com/LRiZYhh.jpg!

I believe this is to prevent dangerous Coherent laser emission from the business end of the light Cool


That makes sense so the phosphor is the dump
The_Fat_Controller
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grin][quote wrote:
That makes sense so the phosphor is the dump

Yep exactly that!, phosphorus doesn’t reflect it just converts energy to luminescence.

Agro
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The_Fat_Controller wrote:
Agro wrote:
I’ve seen many people more knowledgable than me mentioning that for proper throw a lens shall be plano convex or concave convex. It’s curious that they used double convex. Does anyone have an explanation for that? .

Possibly Yes. In lasers the light from the diode exits almost straight so the optic really just needs to true the beam up a little (double convex) to keep it parallel (collomated)

with LED the light from the emitter exits at quite a wide angle with considerable divergence, the lens really has to make a massive adjustment to get it even close to parallel its not true collomation and should really have a second double convex lens after the aspheric to fully collmate the light. this is why you will always have the beam diverging the father it gets away

In LEP i believe because the phosphor is being excited from the top emitting side the light has way less divergence probably not as a tight as a laser diode but a good deal tighter than a conventional LED so they are able to collomate it properly with a double convex


I don’t think so. LEP is a Lambertian emitter (much like a LED) and light is scattered in all directions. I just checked it up…
So the beam needs to be narrowed down rather than widened.

While making sure that the emission is Lambertian I stumbled upon a patent for a RLT collar on a LEP. Facepalm
https://patents.google.com/patent/CA2879326A1/en

When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.

The_Fat_Controller
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Oooo well in that case you could massively improve performance Evil

it really sucks how they have tied up those collars so no one can use them, they have so many applications and i mean really they could be making a fortune selling them as an upgrade

There greed will backfire because sooner or later the chinese will rip it off and they will have missed out on all of those sales (rant over)

grin
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When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.[/quote]

Yeah now i will call it Light Recycling Reflector. Today I was talking to a fitter about machining them out of brass and electroplating the inside.

The_Fat_Controller
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grin wrote:
Quote:
When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.

Yeah now i will call it Light Recycling Reflector. Today I was talking to a fitter about machining them out of brass and electroplating the inside.

The problem with making them is they need to be Retro reflective , not reflective

I have a hunch the patented ones use the refraction of the glass to adjust the reflected beams angle

Agro
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They pretty much just make the mirror spherical.

Then any reflection from the focal point goes right back into that point. LEDs and LEPs are not point sources but they mostly symmetrical and an off-axis reflection just hits the opposite side of the emitter.

The_Fat_Controller
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Agro wrote:
They pretty much just make the mirror spherical.

Then any reflection from the focal point goes right back into that point. LEDs and LEPs are not point sources but they mostly symmetrical and an off-axis reflection just hits the opposite side of the emitter.

look at this in reverse with your emitter at the focal point

grin
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Bit of interesting info here stars from the paddock

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grin wrote:
Bit of interesting info here stars from the paddock

Well the parabolic version could well be doable… Im still not convinced on the hemispherical one maybe im just being thick here I cant see why they would choose a difficult costly material like glass unless it was needed , and the only reason iv got is refraction ? my understanding is that curving the mirror does not change the angle of reflection , it would still be reflective not retro reflective , having it spherical will however correct for the divergence and refocus the reflected beam

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“Seems my W30 fell apart…”

The W30 is marketed as a dive light (claimed 100m water resistance), and it just “fell apart?” That doesn’t give me much faith in their water resistance claims.

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riffraff wrote:
“Seems my W30 fell apart…”

I think it had help….

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The_Fat_Controller wrote:
grin wrote:
Quote:
When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.

Yeah now i will call it Light Recycling Reflector. Today I was talking to a fitter about machining them out of brass and electroplating the inside.

The problem with making them is they need to be Retro reflective , not reflective

I have a hunch the patented ones use the refraction of the glass to adjust the reflected beams angle


No, they are simply reflective, not retroreflective
The_Fat_Controller
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djozz wrote:
The_Fat_Controller wrote:
grin wrote:
Quote:
When a layman (like me) can come up with an invention by themselves, it shall not be patentable. But reality shows otherwise.

Yeah now i will call it Light Recycling Reflector. Today I was talking to a fitter about machining them out of brass and electroplating the inside.

The problem with making them is they need to be Retro reflective , not reflective

I have a hunch the patented ones use the refraction of the glass to adjust the reflected beams angle


No, they are simply reflective, not retroreflective

But that doesn’t work on the hemispherical design

Only the parabolic version can work with reflection alone

Agro
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The_Fat_Controller wrote:
Agro wrote:
They pretty much just make the mirror spherical.

Then any reflection from the focal point goes right back into that point. LEDs and LEPs are not point sources but they mostly symmetrical and an off-axis reflection just hits the opposite side of the emitter.

look at this in reverse with your emitter at the focal point
!{width:85%}https://i.stack.imgur.com/Tw5×1.png!


This “concave mirror” is parabolic not spherical.
With a spherical mirror, rays coming from outside wouldn’t focus on a single spot. But ones originating from the focal point would go right back where they started. That’s because regardless of where they land on the mirror, they would be orthogonal to the mirror’s tangent plane at that point. That orthogonality is literally the definition of a sphere….and light rays hitting a mirror orthogonally are reflected right back.

ADDED:
I think the misunderstanding might be the focus on rays that exit the mirror.
With a full, properly positioned hemisphere there should be none.
Reflective collars work because the hemisphere has a cutout (typically right in the middle) through which light can escape towards the lens.
See the marinebeam drawings.

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