Samsung prototype laser projector 7000 lumens

Hey folks,

Just noticed this article about Samsung's new prototype short-throw LASER projector. It projects a 100-inch image 7000 lumens bright. It's a whole new class of product. Here's the link: http://www.macworld.com/article/140043/2009/04/sanyo_projector.html

Do you think they're using R,G & B diodes? It has a colour gamut of 170% over LCD so it should be spectacular to see.

It's still a prototype and 10G+ but it's the future direction of displays and it bodes well for future diodes.

Cheers, CC

IIRC most of those types of prototype displays are currently using diode reds, and DPSS green and blue. My source of info may be a little outdated, though.

It may actually be DPSS for all of them, but it's definitely DPSS for green and probably blue as well.

It's a prototype, and future ones when diodes will be available will be much smaller, but that thing is HUGE! Cool, but huge! 2.4 meters wide, it really is a piece of furniture.

Awesome technology coming down the pipes in the near future.

Curiously_Coherent said:

It's still a prototype and 10G+

Click to expand...

Try 1000g+

2300 lumens per color... To get 2300 lumens from a green laser, I calculate ~3.8W. Assuming a 2:1:4 ratio for RGB, that's 7W of blue and 14W of red. Then add the optics, electronics, enclosure, engineering costs... How can that be done for anything less than 7 figures?

looks like a diode
http://www.microvision.com/pico_projector_displays/howitworks.html

It WILL be a green diode, but it's not a green diode. Look here, for example: http://www.microvision.com/technology/benefits.html

"Three primary colors, (red, green, blue) are used to generate the full-color images we commonly see in televisions, computers, and video displays. Red lasers are established and widely available in commercial products today; blue and green lasers are coming shortly. Developments in these compact blue and green lasers will enable a new generation of products capable of generating full color images. "

Microvision isn't using green or blue diodes in the products, they may even be using the Necsel (described below); and I've read the Necsel it what Mitsubishi is using in their LaserVue TVs.

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The more applicable/comparable technology to what's in these things right now is to look at a thing called the "Necsel", made by "Novalux" (or at least it was made by Novalux, I think they've been bought or sold once or twice now). It's basically a tiny DPSS package, or something close to it at least. Here's an old story about this: http://news.thomasnet.com/companystory/492524

This big Sanyo device would likely be akin to a huge Necsel set up, with what amounts to 3 lab lasers in it.

ETA: Here's a blog post about Microvision using the Necsel, and Mitsubishi using it as well: http://microvision.sdh.cx/2008/04/necsel-lasers-microvision-no-more.html

Novalux's prototype Necsel devices emit 3 watts at 465- and 532-nm and 750 mW at 620 nm-all from a revolutionary package smaller than a matchbox.

Click to expand...

That is just insane...

I read that these are surface emitting diodes, are these electrically pumped VCSEL or is it doing something similar to OPSL?