FLECOM's Projector: Perpetual Work In Progress...

[allthatwhichis]

THAT'S what I'm talkin bout! Take the lid off and blow some smoke inside...

[buffo]

Just as long as it's not the magic blue smoke that makes all the electronics work!

You know, I never noticed that your 642 nm red had a pair of beams like that before, Frank. You really can't see it in the scanned images all that much, but looking at the optical path, it's pretty apparent. That was a LaserWave unit, wasn't it? Did they (Bridge) ever resolve the problem for you?

Adam

[flecom]

Just as long as it's not the magic blue smoke that makes all the electronics work!

You know, I never noticed that your 642 nm red had a pair of beams like that before, Frank. You really can't see it in the scanned images all that much, but looking at the optical path, it's pretty apparent. That was a LaserWave unit, wasn't it? Did they (Bridge) ever resolve the problem for you?

Adam

theres actually 4 very distinct and separate beams, two of which go in a completely random direction and miss the scanners (thats the bright red dot on the Y scanner)... I waited a year and gave up, so I am getting a 1.2W KVant

in all fairness that module was NOT the module I ordered (thats a 500mW I had ordered the 900mw) and that particular module was a "reject"

back before the last FLEM I wanted to at least have the holes drilled in the table for the LW module so I asked if they could at least send me a broken one or an empty enclosure or something since the 900mW was always going to get here "soon"... so Marc hooked it up with that module

you cant notice it so much in projected images because the 650 is so large... BUT the 642 is diverged, so its actually on either side of the 650's square dot... kinda looks like this

o[]o

marc is applying what I have into the 900mW LW module that never materialized towards the 1.2W KVant so at least I didnt lose anything except a year of my life lol

[buffo]

Wow! What an ordeal...

I'm glad that Marc is making good on your initial investment. But it sucks that you've had to go through all this. I thought Bridge was going to fix this. Guess the 642 nm reds proved to be too much of a challenge for him, eh?

Adam

[flecom]

Wow! What an ordeal...

I'm glad that Marc is making good on your initial investment. But it sucks that you've had to go through all this. I thought Bridge was going to fix this. Guess the 642 nm reds proved to be too much of a challenge for him, eh?

Adam

it seems they drift as they change in temperature... I was thinking about putting a lens in front of it and trying to see the motion

additionally the way they were made left room for no errors in tolerance of the machining... which is simply not really possible... so theres really no way to fix it

I was thinking of being daring and getting one of those quad knife edge/pbs kits from micro laser labs and transplanting the 643nm diodes out of the laserwave to make a nice red for a graphics projector

if you look at the thread where people were complaining about chinese lasers bridge actually posted a picture of a 1W 642nm laser that was in a completely different enclosure, so maybe all is not lost.. but a year is a long time to wait

[norty303]

Out of interest, do you get much lateral movement from the stands for the modules? Some of them look quite long and less than sturdy.

If you were to stand your projector on its end, would everything go off?

[Admin]

Out of interest, do you get much lateral movement from the stands for the modules? Some of them look quite long and less than sturdy.

If you were to stand your projector on its end, would everything go off?

If I could afford it I would use newport optic mounts exclusively... There are a number of tricks that go in to making them exceptionally stable. I have 6 u100a's kinematics here that I wouldn't trade for the world, heres why:

Each 100tpi screw has an encapulated and lubricated ball bearing on the tip for smooth lateral translation without walkoff.

The Brass collet used *just* for each screw is high precision and hardened.

On the inside where the ball bearing "lands" on the back plate: Looks to be a silicon nitride disk. This increases the flatness of the landing zone an unbelievable amount.

Each bearing(with the exception of the disk landing one) has an axis control groove cut into it so when you translate an axis, you don't get walk off in any direction.

There are three high tension springs installed to pull it all together and keep it where you put it. To go one further, some have locking brass collets.

The tiny optic holding screws are green nylon tipped to cause uniform pressure distribution across the entire contact point. Also helps resist rotational shifting.

Optical mounting points are triangular with two raised and rounded arms at 120 degrees and the third point is the nylon screw.

Will they "walk" if you hit them with a hammer? Sure. But on its side? I doubt it. The post system has an equally impressive lash and lock system in play. Lots of dissimilar material contact points and lots of contact area.

Just remember what these things were designed for: Lab use where positional stability is important. And while I don't have any data at my disposal I wouldn't be surprised to hear if the mechanics were also tested for thermal stability over a wide range.

I bring these u100a's to LEM's and let people play around with them, especially if they talk about how their optics "walk" even if they just look at their rig funny.

[dnar]

Admin, do you have any pics of these amazingly anal mounts?

[Admin]

http://photonlexicon.com/gallery/v/u...geViewsIndex=1

http://photonlexicon.com/gallery/v/u...geViewsIndex=1

There are a few more images in that gallery if you feel like digging around.

[dnar]

http://photonlexicon.com/gallery/v/u...geViewsIndex=1

http://photonlexicon.com/gallery/v/u...geViewsIndex=1

There are a few more images in that gallery if you feel like digging around.

Things of beauty (or laser pr0n as it is also know).

Thanks.