Blue LED Lights Invention Wins Nobel Prize in Physics


Three physicists won a Nobel Prize for inventing blue light-emitting diodes that changed how the world is lighted. Japanese physicists Akasaki and Hiroshi Amano, and American Shuji Nakamura, have...

NES light gun gets a laser upgrade, fulfils countless childhood dreams (video)

Image

While it's not the DL-44 heavy blaster we've been holding out for, this Nintendo Zapper is almost as cool. Using the classic Duck Hunt light gun from the original NES, the team at North Street Labs created their own laser pistol. Using a 445nm diode, some batteries, wiring and imagination, the light gun was painstakingly put together, complete with physical safety lock and custom aim-assisting heat sink. The end result is a bona fide laser shootin' gun, capable of not only setting alight matches from a distance, but setting the curtains on fire too (probably). See it in action in the video after the break, where it also tops out their laser meter, rating it -- at least -- at an eyeball popping 2W. Then tap up the source to see how -- for educational purposes -- you could make your own.

Continue reading NES light gun gets a laser upgrade, fulfils countless childhood dreams (video)

Filed under: ,

NES light gun gets a laser upgrade, fulfils countless childhood dreams (video) originally appeared on Engadget on Sun, 23 Sep 2012 14:45:00 EDT. Please see our terms for use of feeds.

Permalink Hackaday  |  sourceNorth Street Labs  | Email this | Comments

Sony, Sumitomo push laser projectors forward with a new, more powerful green laser diode

Sony, Sumitomo codevelop a more powerful green laser diode for projectors

As cool as lasers are, so far there are precious few commercially available display devices available that use them. That may change with this new green semiconductor laser diode announced by Sony and Sumitomo, capable of the brightness necessary to replace the more expensive light sources used to fill in the middle of the RGB setup. According to the two companies, it's the world's first one capable of over 100mW power at 530nm, which they think will make it a fit for both advanced projectors and compact light projectors. Check after the break for more details on how the technology came to be -- drawing heavily on Sumitomo's production techniques and Sony's GaN laser technology developed with Blu-ray -- we'll let you know when there's a LaserVue or REDray setup priced for general consumption.

Continue reading Sony, Sumitomo push laser projectors forward with a new, more powerful green laser diode

Sony, Sumitomo push laser projectors forward with a new, more powerful green laser diode originally appeared on Engadget on Thu, 21 Jun 2012 07:47:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceSony  | Email this | Comments

T-rays produce 3Gbps short-range wireless, make WiFi pout in the corner

Image

The last time we saw T-rays, they were busy scanning bodies for tumors and security threats. Six researchers from the Tokyo Institute of Technology are now aiming the terahertz-level frequencies at a less organic target: fast wireless. Running at 542GHz, a rate that makes 60GHz ultra wideband look pokey, the scientists are sending data through the ether at about 3Gbps. The speed isn't as fast as the 7Gbps peak of WiGig, and the bandwidth runs dry at just 33 feet away, but it comes out of a resonant tunneling diode measuring 0.04 square inches -- definitely small enough to fit into a smartphone. The speed could magnify using higher frequencies and power levels, too, with 100Gbps being the dream. Knowing that it can take years for academic papers to translate to real products, we're not holding our breath for T-ray routers anytime soon. Still, the technology could make wideband a realistic option for handhelds and put the mere 1.3Gbps of 802.11ac WiFi to shame.

[Thanks, Andrew. Image credit: Deborah Miller and Warren Scott, Connexions]

T-rays produce 3Gbps short-range wireless, make WiFi pout in the corner originally appeared on Engadget on Wed, 16 May 2012 10:12:00 EDT. Please see our terms for use of feeds.

Permalink BBC  |  sourceDirect intensity modulation (IET)  | Email this | Comments