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Old 06-15-2011, 03:30 AM   #1
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Default Direct Green Laser Diode Technology Progress

500nm to 550nm Direct Green Laser Diode Development
This thread is intended for the collection of news and industry announcements for technological advancements and mass production plans for direct green laser diodes. Note the following catalog of web published articles sorted by the most recent first:

Aug 31, 2012
Meaglow: commercializing InGaN

Aug 2, 2012
SEMICONDUCTOR LASERS: Green laser diode emits at 536 nm

Jun 11, 2012
Smartphones Boost Projectors

May 31, 2012
MicroVision Receives >$4M Purchase Orders from Pioneer

May 30, 2012
LD Sales Listing - 60mW 510nm & 50 mW 520nm diodes

May 24, 2012
Scheduled WebCast - 15 June 2012 - Fundamentals of Photonics: Visible Green Lasers

May 15, 2012
Lasers – DGL, SHG, and Hybrid

May 14, 2012
Soothsayer 7: Microvision’s Obfuscations Causing a Buzzing Sound

May 9, 2012
The Display Playground: Microvision Official Blog - by Dawn Goetter
Sea of Green

May 8, 2012
Pioneer Introduces the New CYBER NAVI

May 7, 2012
Cyber Navi Video - uploaded by PioneerCorporationPR

May 3, 2012
Nichia 515nm 25mW Laser Diode Specs - Now Published
NDG1116-E.pdf [UTZ-SC0313_1] 2012/04/04


Apr 30, 2012
Soothsayer: Microvision’s Lance Evans “Green lasers alone are $200 each now”
Quote:
It is just going to take more than 2 year for the brilliant people at the laser manufactures to figure out how to make the direct green lasers at a cost point that will lead to mass adoption.
Dec 6, 2011
Karl Guttag on Technology Welcome to Karl Guttag on Technology
Quote:
The question is when will [Direct] green lasers be sold at a price, with the right wavelength, and are bright enough that they can spin up the market. Based on my 34 years of semiconductor experience and reading the “tea leafs”, I would say it is more than two years away (and a lot of people who know more than me about lasers say it is going to be longer)

Dec 19, 2011
Insurance News - MICROVISION INC FILES (8-K) Disclosing Regulation FD Disclosure

Green laser diode production is cutting edge MEMS micro projector from joe spaz ymb | MVIS Message Board Posts

Karl Guttag on Technology Diode Green Lasers (Part 1, Wavelength and Efficiency)

Dec 16, 2011
The Green Laser - Completing the Rainbow
Optics & Photonics News - September 2011

Dec 12, 2011 - They're Here
510nm Direct Green Diodes / Build Photos (DGH-N1, DGH-N2)

Dec 5, 2011
UCSB spin-off Soraa raises $88.6m
Semiconductor Today

Oct 27, 2011
Press Release/Nichia Corporation

Oct 25, 2011
MicroVision Announces Third Quarter 2011 Results - MarketWatch

Oct 17, 2011
NineSigma soliciting proposal (RFP 67572) for Direct Green Laser Technologies on behalf of Global Automotive Supplier . . . to be able to produce 5 million pieces per year
https://www.myninesigma.com/sites/public/_layouts/RFPs/NineSigma_RFP_67572.pdf

Oct 13, 2011
IEEE SCV-Photonics Chapter Meeting on Nov. 1 - KeyPoint Credit Union - San Jose Mercury News

Sept 13, 2011
VERTICAL-CAVITY SURFACE-EMITTING LASERS: Electrically pumped GaN-based VCSELs emit blue and green at room temperature - Laser Focus World

Aug 25, 2011
Optics & Photonics News - September 2011

August 23, 2011
TeraDiode Lands $3.2 Million in Defense-Related Contracts

August 23, 2011
Nanotechnology Now - Press Release: "Photonex 2011 - The Conference Programme is growing and online registration is now open: High power diode lasers & systems"

August 22, 2011
nLIGHT Raises $17.5 Million Investment to Accelerate Growth

August 15, 2011
New picosecond pulsed diode lasers at 500 nm and 510 nm by PicoQuant

July 21, 2011
MicroVision Announces Second Quarter 2011 Results

July 18, 2011
Soraa propels green lasers beyond 100 mW

July 13, 2011
Osram improves green laser performance

July 1, 2011
Laser Diode Module uses 515 nm green laser., Power Technology, Inc.
515nm 20mW IQ Green Laser Diode Module from Power Technology, Inc.

June 17, 2011
SPIE Newsroom :: Green lasers in action

June 17, 2011
PHOTONIC FRONTIERS: QUANTUM DOTS: Quantum dots address a range of new applications - OptoIQ

June 15, 2011
EpiCrystals sets sights on green laser ramp

June 15, 2011
Epicrystals Introduces New Green Laser Aimed at Pico Projectors | Picopros

June 13, 2011
Opus Microsystems unveils a direct-green-laser projector module, to be available by the end of 2011
Before It's News

Jun, 4, 2011
Direct Green Diode Lasers Mass-Produced - Omicron Laserage Laserprodukte GmbH (Photonics Spectra | Jun 2011 | FastTrack)

Mar 22, 2011
Laser+LCOS Technology Revolution
http://www.syndiant.com/pdfs/SID%202...Mei%2039-1.pdf

Dec 14, 2010
Osram set for green diode ramp in 2012

Nov 24, 2010
Sumitomo Electric Industries, Ltd. | Press Release (2010) Sumitomo Electric Announces Large Scale Production of the World?s First 2-inch Semipolar/Nonpolar GaN Substrates for Green Lasers.

Jul 8, 2010
Nichia to Start Sample Shipment of Green Diode Laser -- Tech-On!

Aug 13, 2009
Osram develops direct green-emitting laser diode - Laser Focus World

Last edited by madmacmo; 09-01-2012 at 02:58 AM. Reason: Aug 31, 2012 - Meaglow: commercializing InGaN
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Old 06-15-2011, 03:46 AM   #2
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Default Re: Direct Green Laser Diode Technology Progress

Quote:
Originally Posted by madmacmo View Post
Jun, 4, 2011
Direct Green Diode Lasers Mass-Produced - Omicron Laserage Laserprodukte GmbH (Photonics Spectra | Jun 2011 | FastTrack)
that video even tho off topic is really Interesting
take a look at 2:57 that's amazing.
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Old 07-15-2011, 09:10 PM   #3
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Default Re: Direct Green Laser Diode Technology Progress

I'm not too psyched about 522nm, but 515 will get my wallet running. From the articles I read there was a 25mw 515. Interesting stuff, nevertheless.
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Old 07-15-2011, 09:21 PM   #4
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Default Re: Direct Green Laser Diode Technology Progress

515 should be amazing at night....peak visibility and the beam gets scattered more than 532. Maybe 505 would be even better for nighttime beams?

File:Rayleigh sunlight scattering.png - Wikipedia, the free encyclopedia
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Old 07-15-2011, 09:22 PM   #5
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Default Re: Direct Green Laser Diode Technology Progress

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Old 10-16-2011, 02:36 AM   #6
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Default Re: Direct Green Laser Diode Technology Progress

This is pretty exciting news, thanks for keeping us up on the progress.

Next up hopefully they throw 20 of them in some cheap projector
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Old 10-16-2011, 03:22 AM   #7
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Default Re: Direct Green Laser Diode Technology Progress

Hope springs eternal.
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Old 10-28-2011, 06:27 AM   #8
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Default Re: Direct Green Laser Diode Technology Progress

years of green diodes only existing in theory, blue diodes at a cost of a brand new car...
...but once they want mass produce something with them, they become real and cheap

fu, economics. nobody thinks of us laser hobbyst
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Old 10-28-2011, 12:42 PM   #9
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Default Re: Direct Green Laser Diode Technology Progress

MicroVision sketches me out with their marketing tactics. I don't think they've actually innovated for ages now. I get news alerts for a number of laser related key words. Almost every week for the last year, MicroVision has released a "brand new" pico projector, with its own corresponding press writeup. However, when you actually look at each new product, you realize that it's the same "ShowWX+", but with support for XYZ different portable device. One week it's the iPod, the next week it's Blackberries, etc - which to the best of my knowledge has basically means a new SKU for a box with a different cable in it.

The company screams of desperation.
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Old 12-06-2011, 08:09 PM   #10
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Default Re: Direct Green Laser Diode Technology Progress

Just noticed this news:
Semiconductor Today
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Old 12-06-2011, 08:33 PM   #11
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Default Re: Direct Green Laser Diode Technology Progress

They better effin hurry up with those demonstrated 4 watt blue laser diodes !!! stupid demonstrations WE WANT MORE !!!!!! power
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Old 12-10-2011, 07:55 PM   #12
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Default Re: Direct Green Laser Diode Technology Progress

Thanks for putting this topic together. I'm still waiting to add a green direct laser diode to my collection. It seems they've been talking about these devices for years now, however no diodes have been seen outside of paper/lab. I suspect they are more difficult to fabricate than is admitted to.

The most interesting new development (IMO) in the plethora of links you listed are the VCSEL constructs. Unfortunately they are very low power ( < 1 mW)

Any direct diode > 500 nm or < 620 nm is needed and very desirable.
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Old 12-11-2011, 05:25 AM   #13
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Default Re: Direct Green Laser Diode Technology Progress

A great way to keep abreast of this kind of news, is to use Google news alerts. You can put in keywords, and once a day they'll send you any new news alerts that match your search. It seems to filter out news releases from generic boring search results.
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Old 12-13-2011, 04:02 AM   #14
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Default Re: Direct Green Laser Diode Technology Progress

+1, by the way, to madmacmo for aggregating this data and maintaining this thread so far. Thanks a lot! There's still more development to come!
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Old 12-24-2011, 08:05 PM   #15
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Default Re: Direct Green Laser Diode Technology Progress

First, thanks for posting the link over to my blog.

I'm a major proponent of green laser's for all projection and especially for pico projectors. I have written and presented many papers on the subject. But as much as I believe they are the "the future," this future is not going to be in 2012, at least not in any big way. I talk regularly with many of the big player in lasers (and will meet with some of them at CES). My personal opinion is that Microvision is misleading people about the state of Direct Green Lasers (DGL) in order to prop up their stock price and to sell more stock to stay alive. But then when I tried to give the true picture on my blog, it ran afoul of what they had been trying to get people to believe.

I also understand that the laser beam scanning concept seems to those that haven't looked at it in technical detail like it would be small and efficient, but there are are a lot of problems with it when it is understood better. I'm not trying to bash the concept per say, but rather point out some of these often overlooked issues. I will point out where the LBS companies spread false and misleading information and when they accused me (thinly veiled) of being a "false soothsayer" then I will take issue with their false claims.

While the controversy with Microvision was good for driving some traffic to my blog, I would really like to see more questions that have to do with laser projection in general and less on LBS/Microvision. So please feel free to come by and ask questions.
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Old 12-24-2011, 09:05 PM   #16
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Default Re: Direct Green Laser Diode Technology Progress

I haven't read your blog, but I do have the sense that Microvision is up to some sketchy marketing. I'll tell you why I say that -

I subscribe to press releases, and one of the topics I have a bunch of saved recurring searches on are pico projectors.

Well, for a pretty large portion of the year, I was getting press releases almost every week, about different "new" pico projector models that were being released by Microvision. Although it may be an exaggeration, it certainly felt like there was a new model being announced every week, for a period of many months.

Of course there weren't actually any new pico projectors. Microvision would just send out a new press release, claiming a "new model" any time they added a hardware partner. I got the press release about the ShowWX+ that supported Ipod, and it was this great "new pico projector" from Microvision. Then there was the pico projector model they released for BlackBerry, which again was promoted as a "new pico projector", even though really, I think it was just the exact same product with a different cable. Then they got really sketch-bag, added an HDMI cable, and started selling the "ShowWX+ HDMI". Again, it was billed as some great new pico projector, but it was the same unit, with the same specs (brightness, resolution, size, weight, look&feel, etc), just with a slight tweak to the name and a new format to support.

There are a number of examples like this, where Microvision tried to repackage the same stuff as something new. I got so sick of reading it, that I stopped subscribing to pico projector press releases all together. It really stunk of desperation. It's fine to be desperate in reality, but when you look that way, something's wrong. They were trying way too hard.

I don't understand what their stumbling block is at this point. Everyone is blaming their financial situation on the delays associated with direct green diodes, but I think that's bologna. If Corning has no more of their tiny DPSS modules to hold Microvision over until direct greens are affordable/viable, then there are lots of other options. Snake Creek has stuff that is as small as the Corning units (LaserHeads) and I've got a little DPSS "pico projector" crystal set that I bought on eBay for $99 that really wouldn't add any substantial bulk, even when coupled with an IR diode.

In other words, if Microvision is in trouble, it's not because of direct greens not being here, it's because they're doing something else wrong, somewhere.
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Old 12-25-2011, 03:08 PM   #17
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Default Re: Direct Green Laser Diode Technology Progress

madmacmo,

Thanks for the welcome.

Understand that I more interested in green lasers from the perspective of projection. For example a 510nm laser will look plenty green to the average person, but if you use it as one of 3 primaries, there is no way to get yellow as the 510nm triangle on the CIE Chromaticity chart from my blog shows.

There are other characteristics like light output when turned on for long periods, temperature range, and the like that are more demanding with projection.
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Old 12-25-2011, 03:25 PM   #18
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Default Re: Direct Green Laser Diode Technology Progress

rhd,

Microvision has been loosing about $3M per month (>$30M/year) for years on end. The only way they have been able to keep doing this is to keep finding people to invest. So you have to look at all their announcement with the view to trying to print more stock.

Microvision's headlines on news releases I find to be very misleading as it implies something much bigger than what is in the text of the release. You have to parse their words very carefully. Most of their "big deals" are simple distribution agreements for their products and in no way constitute and endorsement of their technology by the company. Based on their financial statements, the sell their products to the distributors at a loss (by all appearances, business has become about raising money from stock holders rather than to make profits on selling products).

Microvision uses "laser beam scanning" where the R, G, and B lasers are aimed onto a single mirror that sweeps the combined beam. This concept on the surface sounds simple and efficient, but there are many serious technical problems with this approach that get glossed over. One of these issues is that the lasers have to turn on, off, or analog levels in between at about 100 MHz.

The DPSS lasers commonly found in laser points switch far to slow to be used in laser scanning. That is why Microvision needed the special designs from Corning and OSRAM that would switch faster.

Microvision's problems are much bigger than just the green lasers. They use the green lasers as a scape goat to hide all the other problems. Part of these problems have been and will continue to be outlined on my blog.


Quote:
Originally Posted by rhd View Post
I haven't read your blog, but I do have the sense that Microvision is up to some sketchy marketing. I'll tell you why I say that - (snip)


I don't understand what their stumbling block is at this point. Everyone is blaming their financial situation on the delays associated with direct green diodes, but I think that's bologna. If Corning has no more of their tiny DPSS modules to hold Microvision over until direct greens are affordable/viable, then there are lots of other options. Snake Creek has stuff that is as small as the Corning units (LaserHeads) and I've got a little DPSS "pico projector" crystal set that I bought on eBay for $99 that really wouldn't add any substantial bulk, even when coupled with an IR diode.

In other words, if Microvision is in trouble, it's not because of direct greens not being here, it's because they're doing something else wrong, somewhere.
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Old 12-27-2011, 03:43 AM   #19
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Default Re: Direct Green Laser Diode Technology Progress

Sounds like microvision is the new meaning of Cr@pio. I admire their effort but some types of technology just aren't going to make it. Using lasers for a projector just might not be the way to go.
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Old 12-27-2011, 04:43 AM   #20
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Default Re: Direct Green Laser Diode Technology Progress

Quote:
Originally Posted by Super Critical View Post
Sounds like microvision is the new meaning of Cr@pio. I admire their effort but some types of technology just aren't going to make it. Using lasers for a projector just might not be the way to go.
Actually, it's a brilliant way to go because it hugely minimizes the need for optics, and should in theory allow for smaller projectors. The challenge, I think, is getting the power of the diodes higher.

With the Mits300s hitting much more powerful red targets (at lower costs), and the OSRAM Blues hitting 150mW +, using essentially the same part already in the ShowWX, it should be possible to hit closer to 50 lumens (instead of the 20 they're at now).

Though admittedly I'm not contradicting a previous comment - I think it actually might be the case that green is the limiting factor at this stage.
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Old 12-27-2011, 04:44 AM   #21
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Default Re: Direct Green Laser Diode Technology Progress

I think it is inevitable that all projectors from movie theaters down to the smallest pico projectors will use lasers for illumination. There are so many advantages of laser light for making projectors that they will be everywhere. The likelihood is that the lasers will be used to illuminate a DLP or LCOS device.

The problem is that laser beam scanning/steering with one multi-axis or two single axis mirrors sounds simple and efficient, but it is anything but if you understand the details. Microvision has does a good job selling investors on the concept and has lost over $400 million of its investors money doing so. But the reality is that their projectors are very inefficient, very expensive, and the image quality is very poor. They are now trying to tell investors that direct green lasers will solve everything when in fact the cost and availability of direct green lasers are only one of their many problems.
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Old 12-27-2011, 04:47 AM   #22
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Default Re: Direct Green Laser Diode Technology Progress

Question -

If they used lasers with DLP instead of the MEMS steering approach, would they still retain the benefit of nearly infinite focus?
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Old 12-27-2011, 05:17 AM   #23
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Default Re: Direct Green Laser Diode Technology Progress

Quote:
Originally Posted by rhd View Post
Question -

If they used lasers with DLP instead of the MEMS steering approach, would they still retain the benefit of nearly infinite focus?
Yes, panel based (DLP or LCOS) definitely can be focus free with laser illumination. The laser light itself is very high f-number and sort of works like a pin-hole camera in terms of not needing focusing (the image becomes hyperfocal/in-focus a short distance from the projector to infinity).

Unfortunately this goes against everything in one's human experience with non-laser light and lenses. People think that the only purpose of a lens to focus light. I explained this briefly in my paper at SID this year
(paper is at http://syndiant.com/pdfs/SID%202011%...Mei%2039-1.pdf), the key section is copied below. I am planning on an article to explain this in more detail on my blog.

3. Benefits of Laser Light
One of the hardest things for people (even highly technical ones)
to believe is that Laser+LCOS projectors are focus free because
they have a projection lens. In their common experience with
projectors and cameras, a lens is a way to focus light. Even after
spreading the light and any speckle reduction, the laser light
remains at a high f-number. The high f-number of the
illumination and the wide angle lens results in a projected image
that is in focus from a very short distance from the projector to
infinity.

The high f-number light means that all the light is efficiently
collected by small, high f-number optics which reduces the overall
size of the projector. This high f-number light also makes building
very short throw and high (100% or more) offset optics, much
simpler as the optics only need to get the light directed to the right
places without having to also work to keep it in focus. The ability to
implement short throw and high offset projection with small optical
components will be important in meeting the form factor
requirements for many mobile applications.


The existence proof is that projectors have been made and sold, including the AAXA L1 that used a Syndiant LCOS panel that are focus free. For example see the video at AAXA Laser Projector.avi - YouTube which briefly shows it being focus free toward the end of the video.
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Old 05-01-2012, 01:39 AM   #24
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Default Re: Direct Green Laser Diode Technology Progress

Here's for hoping they somehow DO mass produce these. I'd be more than happy to buy a binned low WL green diode. Thanks for the update!
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Old 05-17-2012, 07:09 AM   #25
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Default Re: Direct Green Laser Diode Technology Progress

Stuff like this:

and in fact, this whole page in general:
Insight Media Microdisplay, Display Intelligence
is complete garbage.

To be clear, I think it's awesome that you posted it - I'm not critiquing that. But the content itself is just dribble meant to drum up licensing revenue from utterly useless/imaginary/irrelevent data, presented in what pretends to be some logical categorized presentation. Look: "$2,500 for a single company site license" to use their report.

This is the dummest crap I've ever read. They're projecting (bad pun, sorry) that by 2016, we'll have 7 categories of projector, including "Toy", "Smart Phone Handset", "Consumer Microprojectors", "Presentation Microprojectors", "Hybrid Projectors", "Stand-Alone Picoprojectors", etc etc etc.

That is the most unbelievably arbitrary and fictitious fabricated nonsense that I've seen in a long time. Anyone who even vaguely follows consumer electronics will know that it's a stretch to predict even broad product trends 2 years into the future. Yet InsightMedia pretends to somehow be able to predict minute product line sub-categorization 4 years out? Bologna.

This is the kind of garbage that print media journalists without a shred of expertise in a subject area (but with big old-media budgets) pay the $2500 price tag for so that they can shlep it into their one-column tech-section feature and impress 60 year old baby boomers who don't own computers, but have heard that "electronics is the new thing these days".
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