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Crowd-Source: Can anyone find a source for the new 1W Mitsubishi 635nm?

Helios

Helios

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qumefox said:
They weren't deleted. The server had a hard drive die in the raid array and Cold restored a backup from the 23rd.
Click to expand...

They werent deleted but they will not be coming back either (I am sure you know this and most others do to but I am just specifying for anyone who might not). Seems to be some issues with updating subscribed threads via email as well.
 
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L

LSRFAQ

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Guys, buy two of the 170 mW single mode 638 reds, combine them with a pol cube and save your money. You will be MUCH happier with what you get.

I had my hands on the big ones a while ago. They are awe inspiring red sources for video projectors, or a short throw lumia in a planetarium.

Burning stuff: NO.

If you could get them internally microlensed they might be useful.

(Forget it, I had a talk with the leading microlens company, and nothing less then doing 2K pieces would interest them)

Even with microlensing, the projected losses were high. There is a issue that limits... That I cannot get into.


35' in my opinion is, well, optimistic.

I'd love to show you a test shot at 70' feet, but I signed a NDA for that work. I had it mounted on a handheld optical system.

Losses before the second optic approached 50% at best collimation at 70 feet, and that spot was huge, measured with a tape measure on one axis, not a ruler.

I had serious money behind me on the optics.

A single lens will not collimate these diodes to a pointerlike state without very large losses. I tried a lot of tricks, prisms, Drlava's lens set, going into fiber etc.

OK, I just pushed the limits of my NDA to tell you that. Please don't ask, I can't tell you more.

One of the funny things is even if you guys got your hands on samples, I could still not tell you what I know, the NDA is a restrictive one.


SAVE YOUR MONEY!

Steve
 
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rhd

rhd

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LSRFAQ said:
Guys, buy two of the 170 mW single mode 638 reds, combine them with a pol cube and save your money. You will be MUCH happier with what you get.
Click to expand...

That's not terribly feasible for a pointer though, unfortunately :(
 
L

LSRFAQ

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rhd said:
That's not terribly feasible for a pointer though, unfortunately :(
Click to expand...

Neither is the fat one after the best possible correction.

Although the sponsor of the research hates pointers, he wont mind if I comment a little more, as he hates wasted money worse then giving away useless technology:
Cue theme from the movie "Stripes"

Beam was 13" by .35" at 70 feet at 40% loss

7"x.5" at 70 feet >50% loss.

Makes a 3 mm pol cube look very good with two 15 mm long collimators.

Your loss after correction puts you in the ballpark of the 170 mW single mode.

The power density of the 170 mW diode wins, as does the spot size, which was a fraction of the large die device. While brightness is not always directly related to power divided by area, in this case, it is.

The others on PL had similar or worse results.

Take a look at Dr Lava's correction optics block if you want to see how small a dualie can be.
(Darn tiny!)



Steve
 
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midias

midias

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Yea my mistake I expected something this awesome to show up in the red section
 
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