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PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

RedCowboy said:
I grabbed a couple of these for Christmas gifts, great price.

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Did you already get them or just order them? I'm wondering if they're actually LEPs or if it's just fancy Chinese marketing.
 





 
 
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I will post a quick review when they arrive, supposed to be shipped from a US address so I expect delivery later this week by Friday Dec. 6th.
 
Received the 1st of these and it's nicely made, it's a lot more impressive than the pic because my camera is old, the throw is really quite good.
I will post a few more pics when the others arrive.
One thing of note is when on the high setting the output will dim a little after 30 seconds or so, but a quick off-on resets it, this is normal thermal protection according to the instructions, pretty neat for the price and it's a shine through LEP element not a refractive.... I'm sure I will take one apart when the others arrive, probably post a few pics later.

p.s. I wouldn't give this to a child, it could hurt our eyes at short range if shown/pointed at someones face.

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RedCowboy said:
Received the 1st of these and it's nicely made, it's a lot more impressive than the pic because my camera is old, the throw is really quite good.
I will post a few more pics when the others arrive.
One thing of note is when on the high setting the output will dim a little after 30 seconds or so, but a quick off-on resets it, this is normal thermal protection according to the instructions, pretty neat for the price and it's a shine through LEP element not a refractive.... I'm sure I will take one apart when the others arrive, probably post a few pics later.

p.s. I wouldn't give this to a child, it could hurt our eyes at short range if shown/pointed at someones face.
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Awesome! I may have to get one or two.
 
I'm already thinking about an array of 7 ( 1 surrounded by 6 more ) all converged at infinity...... wouldn't be surprised if one of the FL companies didn't build one.
 
I'm thinking about testing a c-lens corrected beam with a shine through LEP element and then possibly a small beam expander or how about a FAC enhanced laser diode..... you don't suppose they are using FAC enhanced laser diodes in these lep flashlights??? ...... tear down coming soon.
 
RedCowboy said:
I'm thinking about testing a c-lens corrected beam with a shine through LEP element and then possibly a small beam expander or how about a FAC enhanced laser diode..... you don't suppose they are using FAC enhanced laser diodes in these lep flashlights??? ...... tear down coming soon.
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Since these aren't coherent light, I doublt using C lenses will work. But, maybe you can prove me wrong?!
 
I am talking about using a laser with c-lens correction in an attempt to improve the dia. and divergence of the white output obtained from the shine through LEP element.

I have owned the refractive LEP headlight type in which the laser is focused to a pretty small point, but the shine through elements appear to use a much wider infinity focused beam, so if the beam was of better quality, maybe the white output would be somewhat improved as well.

Again the c-lenses will be employed on the laser beam before the shine through LEP element.
 
I said in my post that I am thinking about testing......

1st I'm going to tear one down and see what kind of laser diode they are using and if it has anything more than a coil lens before the shine through LEP and how big the laser is printing on the LEP element, then I will likely test the LEP element with a c-lens corrected beam, but I'm still waiting on the other units to arrive, it may be a while before I get around to it, however I expect it will work just as well if not slightly better.
 
Nifty spring loaded gold contact pins and the shine through lep element is very small, it uses a small focal point.

The less expensive Ali Express unit came with an extra pressure switch tailcap, but the color of the beam has a slightly yellowish hue mostly around the edge of the spot which is white, where as the ebay unit for 90 dollars is quite entirely white, this is no doubt an earlier phosphor and it advertises a color code but didn't explain it.

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It is a 9mm laser diode, but sadly the lep module is assembled from the front with the retaining ring glued in place, so getting it apart will likely mean destroying the housing, so I will just buy some lep elements to play with, I've seen them for sale before and as the later production makes a true white light, butter to get the newest available.


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