Harvesting a Pico Projector

[dave]

The blue is an Osram, datasheet (I'm 95% certain of) here:
http://catalog.osram-os.com/jsp/down...00049856_0.pdf

It's relatively high voltage for a blue, much more like a 405.

The red is typical red voltage. Around 3.2.

Both diodes are 3.8mm

Opnext are selling a 3.8mm 80mw blue now - my money is on the blue being a Opnext, not a Osram

http://www.prophotonix.com/uploads/p...023MG_Rev2.PDF

The red might only be 60mw
http://www.prophotonix.com/uploads/pdfs/hl6387tg.PDF

[dave]

Tossing up the idea of a 3.8mm diode housing. Hmmm

[rhd]

Opnext are selling a 3.8mm 80mw blue now - my money is on the blue being a Opnext, not a Osram

http://www.prophotonix.com/uploads/p...023MG_Rev2.PDF

The red might only be 60mw
http://www.prophotonix.com/uploads/pdfs/hl6387tg.PDF

The blue Opnext you linked me to is 405nm. I'm not sure why they would use a 405nm in a projector. Low visibility. I'm fairly certain that it's the Osram I linked up.

I'm also doubtful that the red is what you've linked me to. At 60mW, they would be substantially over-driving it to hit 90mW in the projector. Usually it's the other way around with diode implementations in consumer products. If anything, they tend to under-drive them.

[dave]

There is a 445nm 80mw opnext blue too. Must have clicked the wrong link

[dave]

try this one

http://www.prophotonix.com/uploads/d...023TG_Rev0.pdf

and this for red maybe?

http://www.litrax.com.tw/upload/HL63603tg_Rev4.pdf

[rhd]

try this one

http://www.prophotonix.com/uploads/d...023TG_Rev0.pdf

and this for red maybe?

http://www.litrax.com.tw/upload/HL63603tg_Rev4.pdf

I initially thought that was the RED, but the divergences don't match. The manufacturer was nice enough to include some diode specs in the projector's manual:


Similarly, the Opnext blue divergence specs don't match either, whereas the Osram's do - perfectly. Plus, there are a decent number of press releases dating back throughout 09 and 2010 that indicate Osram had secured a diode sale to the manufacturer. I'm quite sure about the Osram part.

Regarding the RED, I think it's probably the Opnext HL6378DG, but without a photodiode, and put into a 3.8mm can for them by request. The power, specs, divergence, etc match perfectly. The only difference is that the HL6378DG normally has a PD, and comes as a 5.6mm.

[kitatit]

Tossing up the idea of a 3.8mm diode housing. Hmmm

Yes please. I made a version of your mount Dave for my 3.8mm 50mW nichia blue.

It's still a bit of a niche and painfully small to work on but if you made a 3.8mm mount it would take the pain out of playing with 3.8mm diodes.

I guess it's watch this space to see if some must have popular diodes are only made in 3.8mm packages.

[aijii]

The corning g1000 looks interesting... Directly doubled...

[andy_con]

90mw of 635 single mode would be good

[Meatball]

The corning g1000 looks interesting... Directly doubled...

Agreed. I would like to learn more about this.

Directly doubling a (magical) super narrow bandwidth 1064nm diode sounds almost impossible. That's also assuming you can get a nice circular output from such a diode. The power density would be difficult to achieve.

But what if they're not even using KTP or LBO?