Finally, Germicidal UV LEDs for the Rest of Us!

I was recently asked if I knew where one could get Germicidal UVC LEDs since I had blogged about the technology a while back. Well, I do so I am blogging it here for all to see in case you may be interested. Now I am talking “commercially available” not some pie-in-the-sky R&D type of availability.

Sensor Electronic Technology (S.E.T.) is commercially shipping deep UV LEDs that they call UVTOP LEDs that range in output wavelength from 247 to 365 nm. The output power is typically 0.5 mW at 20 mA forward current. They are typically multi-die, single can LEDs mounted in TO-39 or TO-18 cans. The cans in this case are specially designed with internal reflectors to maximize output. The LEDs are available with or without ball or flat lenses to boost output power and narrow the beam profile.

Being as S.E.T. is the basically the only game in town right now (they have partnered with Seoul Semiconductor so I imagine we will start to see these coming out through Seoul’s distribution channels, especially in Asia and perhaps even see the die technology licensed off) you don’t really have a choice of deep UV LEDs so you’ll have to pay the gigantic price of nearly $300.00 each in single quantities for 250 nm LEDs (they get cheaper the further up toward the UVA you go).

Beyond price, this is still very good news for both S.E.T. and the rest of us in the LED industry since up until now, there wasn’t an alternative so kudos to S.E.T. for the way cool technology and making it available to the rest of us!

Click here to check out the line of UVTOP deep UV LEDs from Sensor Electronic Technology, including datasheets and their pricelist.

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Here’s something you may not have realized about LED luminaires…

Make sure the LED luminaire you choose is a “Sleeping Beauty”

I’m guessing that not a whole lot of consumers realize that some LED fixtures may in fact draw current even while in the “off” state and I’m sure that fact is something the big manufacturers haven’t been very upfront about due to the fact that the “eco-friendliness” of LEDs is a huge selling point. Of course, this doesn’t really apply to all LEDs, a lot depends on either the quality of the design or the sophistication of the controller (i.e. how many and what types of “smart” features it has).

This is an excellent article and worth a read if you’re remotely involved in the solid-state lighting industry.

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Cambridge Display Technologies to be acquired

Sumitomo Chemical to Acquire USA OLED Display Company, Cambridge Display Technologies

August 2, 2007…Sumitomo Chemical reported that it will acquire Cambridge Display Technologies, a U.S. firm that develops materials for organic LEDs (light-emitting diodes), for about 285 million dollars, or roughly 34 billion yen, according to an article on Nikkei Net. The acquisition requires the approval of CDT stockholders at CDT’s shareholders’ meeting this fall. Under the terms of the agreement, Sumitomo Chemical will buy all outstanding CDT shares for 12 dollars each. This is more than double the stock’s average price over the past 90 days. CDT shareholders hold a combined stake of 43 percent and are the largest stockholders in the company. CDT is reportedly a dominant company in the development of technology for organic electroluminescence displays.

Article courtesy of: LIGHTimes

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LED Throwies: Not Exactly What LED Manufacturers Intended

Instructables Article: LED Throwies

1. Buy a whole mess of colorful LEDs
2. Buy as many lithium button cell batteries as you did LEDs
3. Buy same quantity of small disk magnets
4. Tape one LED to one battery
5. Tape magnet to battery to complete one throwie
6. Take a whole bunch of throwies and chuck up onto side of metal building, bridge (don’t try this in Boston ), phone pole, side of your car, wherever
7. Stand back and admire the light show

Checkout the rest of this great article for the entire story, complete step-by-step instructions, recommendations, photos, and comments on this weird but totally cool new use for LEDs!

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