Aspheric mag with p7

[aussiebuddha]

Hi all, i just had an idea. would it be possible to use a p7 with aspheric lens?
any considerations i should have in mind?

 

[KrisP]

People have said it will project the 4 separate dies (dice?). I just made a P7 Mag so I can check tonight with an aspheric to see what it looks like

 

[easilyled]

Its possible of course, but the best led for using in combination with
the Aspheric lens is the Cree-XRE rather than the Seoul-SSC-P4 or P7.

This is because the narrow beam angle of the Cree means that most
of the light is being projected forward into the Aspheric lens rather
than being wasted with a broader beam angle like the SSC leds

 

[KrisP]

The first image is the light focused with a 52mm x 37mm lens... The head needed to be unscrewed nearly all the way to get it to focus like this. If the head was left screwed all the way down, you get a bright round beam, like in the second picture, with very minor artifacts.
The same camera settings were used for both and had to be under exposed so you could see the detail. The wall (actually my ceiling) is about 8-9ft away.

 

[Lunal_Tic]

Cool pix, thanks. At 10M+ you probably can't tell. If you are able, shots outside at further distances would be great.

-LT

 

[DaFABRICATA]

Almost appears the the dies are not lit up all the same....

Wonder if this is going to be a problem with these LEDs.

 

[Supernam]

They aren't. We saw this same inconsistency between dies from the low power picture thread. This is probably a reason why there is so much spread between bins. I suppose it could be a problem when the emitter is pushed to the limit since that would mean one die is getting close to the edge of destruction.

 

[KrisP]

In those pics it was running at about 1.8A because the batteries were getting low. I was also holding the light in my hand because it wouldn't tail stand on the carpet so some movement might have caused the difference in brightness. When looking with my eyes, it was too bright to see any difference.

I'm not too good with outside beam shots but when focused the dies (dice?) are still visible at over 50m.

[edit] Here are some outside pics. The brightness isn't accurate but you get an idea of the beam.

Control shot


Wide focus with 52mm x 37mm FL aspheric lens. Distance is about 50m, I think.


Tight focus with 52mm x 37mm FL aspheric lens. Distance is about 50m, I think.


Tight focus with 52mm x 37mm FL aspheric lens. Distance is about 70m, I think.


Tight focus with 52mm x 37mm FL aspheric lens. Distance is about 20m, I think.

 

[Citivolus]

I think that that pattern would definitely take some getting used to.

 

[KrisP]

I'm not going to use it like that as I prefer the hot spot from a reflector but if I wanted a nice even floodlight, i'd definitely use an aspheric lens defocused.

 

[Mercaptan]

At least you could mount one of these aspheric P7s on a rifle, and use the middle of the four dies as the crosshair...

 

[LukeA]

Almost appears the the dies are not lit up all the same....

Wonder if this is going to be a problem with these LEDs.

I made a thread a while ago, but nobody had any insights.

I think 4p was the wrong way to put this emitter together.

 

[Lunal_Tic]

KrisP,

Thanks again for the beamshots. I'm really surprised that the image of the dies is still clear that far out.

-LT

 

[aussiebuddha]

nice work mate!!!
I'm just wondering.
Is this a better solution for a super thrower than a single aspheric CREE R2?

 

[KrisP]

The beam is distracting when focused, i'd rather use my Q5 Cree Mag. I'd have to say the Q5 beam is more intense than the P7 beam.

 

[rizky_p]

i wish SSC build the die in the shape of batman figures, that would be cool.

 

[stitch_paradox]

i wish SSC build the die in the shape of batman figures, that would be cool.

LOL now that's one light i definitely have to see!