Corning G-1000 module

[Things]

Interesting that the newer projectors actually have good alignment right from the optics. The older ones used the MEMS system for the fine alignment tuning, meaning you couldn't really just cut a hole in the side and get a nice white beam.

[holokidd]

Interesting that the newer projectors actually have good alignment right from the optics. The older ones used the MEMS system for the fine alignment tuning, meaning you couldn't really just cut a hole in the side and get a nice white beam.

The output beam is really not that clean or alighned. I think its possible the three beams may cross each other at a point infront of the projector, if the raw beam is allowed to project a 100' or more you can see the three outputs seperate... and interesting part inside is the photo-diode pickup. Its actually 3 separate sensors with the different color filter on each one .............so all colors are regulated thru it.

[dsli_jon]

Hey hk -

...if the raw beam is allowed to project a 100' or more you can see the three outputs seperate...

One trick I've used is put a large-aperture plano-convex in front, so it 'blows up' the beam, against a wall - let's you 'study' the beam-profile / mode, etc... w/O adding another 95'... ..You could also-try making a 'z-fold' with a couple 4-6" mirrors, in just-that 'arrangement' (Z) to work / study, closer-in..

..This is also a great-way to 'study' a multi-diode array - you can 'see how ya did' on your stack / alignment, and also usually see if one diode is putting out a good-bit less power or is weaker / tweeked... especially useful for studying red-arrays, and examining the mode / beam-anomalies in 'ChOEM' dpss greens..

and interesting...the photo-diode pickup....all colors are regulated thru it.

Regulated, as-in, feedback for modulation? Or, feedback for 'thermal-regging' stuff, based on power-sampling? Most-curious...

Gr8 werk, hk.. thanks for sharing.. I'ven't the time to play with it.. wish I did...

cheers..
j

[holokidd]

He He, Thanks for the tips the reason i mentioned/use the 100' beam was i know what most of you guys want to see in a show laser , [______]---------------+. The 100' marker just happens to be about 100' from my kitchen counter to the street sign ............

Initally i expanded the beam using a fast concave mirror and i was suprised to see the classic color mix image of three colored diameters overlapping with a white spot in the mid-section, all projected on the wall.


Buy the way thats the G-1000 's beam @ 100' collimated w/simple positive lens

[sharkcow]

sorry to mess up this thread, but the title is wrong. What you're discussing here is not a Corning G-1000. This laser is manufactured by OSRAM, they named it PL530... The Corning laser would have 10 pins and thus need lots more control loops to keep it running (http://spie.org/x39284.xml).
So no wonder Corning isn't telling you anything about the insides - they don't know! ;-)

best wishes from Osram-country!

sharkcow

[holokidd]

Im not so sure were all wrong here, can you link a data sheet to your Osram laser? The reason Corning wouldnt talk to me is i wouldnt sign their information disclosuer contract......................

These SLM lasers are very simple to run and dont need all the connections needed to run a DPSS laser.

[sharkcow]

that's exactly my point: the Corning laser is much more difficult to run. Did you have a look at the link? Anything Corning ever published about their green lasers had 10 pins (semiconductor DFB laser externally frequency doubled with ppLN waveguide).

This article should convince you of the similarities to your device:
http://www.epcos.com/web/generator/W...3282,a=1731204

sharkcow

[FourDee]

So this is an OPS module
Nice

[chad]

Hi Sharkcow,

Yep, ok, that nails it. You were right and we were wrong. You obliviously have privileged info that we don't. OS was very quiet about that module and none of us were able to find it. The g-1000 had more info on the web and seemed to fit the bill. My 'plausible' explanation for the discrepancy in pin count was that the published info was early engineering samples and they had simplified pin count on the shipping device.
Any way thanks for the info. That explains a lot. Knowing that OS had a lot to do with the MV module now we can safely confirm that the direct blue is also the OS direct blue and most likely the photo diode is a OS part as well.

It will be interesting to see if the third gen MV module uses the really neat OS module or if they go with a direct green from OS,Soraa,Nichia or others. I know that the 530 is a much better color than the 510 for video... Time will tell.

Thanks Sharkcow, or is it Dr. Sharkcow?

chad

[holokidd]

While I agree to the similarities, that doesn’t prove that these were used in the MVshowwx units. I’ve read many papers saying these G-1000 and G-2000 units are used in MV Pico projectors.

Just thinking out loud here...... Is it possible this 4 point connector laser is actually a G-2000 laser ? I wouldnt be suprised if they are made by the same overseas Mfg .