Editors' Notes http://ledsreview.com/blogs/editors/ http://ledsreview.com/blogs/editors/ Announces and thoughts from Editor. en http://backend.userland.com/rss2 Sun, 05 Feb 2012 20:23:39 -0800 Is UL certification required to sell LED lightng in USA?
Jeff Walters via LinkedIn


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UL is not needed to sell to utilities in the USA. I have been designing and selling to this market since 1985. UL is not written into any IOU (investor owned utility) specs. Conformance to ANSI C136 standards is required.

UL or ETL or CSA is needed to sell to retail, commercial or industrial market. Needed in the DOT market. Helpful in the municipal streetlight market


UL products are not required for insurance companies to process claims. Nor does the use of UL listed products protect against liability.

UL is a private company. Its use is not required by and Federal, state or local laws.
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More...]]> http://ledsreview.com/blogs/editors/32.php http://ledsreview.com/blogs/editors/32.php Fri, 03 Jun 2011 15:43:06 -0700 LED Production in Europe "Are there any companies with LED manufacturing facilities in Europe?"

Here is what I've managed to find so far:



  • Osram Opto (factory in Regensburg)
  • Optogan with facility in Dortmund, Germany. Next year they'll start LED manufacturing in Russia.
  • Tridonic (Austria)
  • Vossloh-Schwabe Optoelectronic GmbH & Co. -- Factory is located in Kamp-Lintfort, Germany.



Do you know other companies manufacturing high brightness LED in Europe? Please post in comments.




More...]]> http://ledsreview.com/blogs/editors/29.php http://ledsreview.com/blogs/editors/29.php Tue, 23 Nov 2010 15:15:52 -0800 Strategies for 50% Energy Savings in Office Buildings The U.S. Department of Energy and its National Renewable Energy Laboratory (NREL) have released two technical reports that provide recommendations on how to achieve 50% energy savings in large office buildings and large hospitals.

Technical Support Document: Strategies for 50% Energy Savings in Large Office Buildings evaluates the potential for new large office buildings to achieve a 50% net onsite energy savings compared to a baseline standard (as defined by ANSI/ASHRAE/IESNA Standard 90.1-2004). The report found 50% energy savings can be achieved in both low-rise and high-rise office buildings in a broad range of U.S. climates. The analysis was conducted in 16 cities that represented different climate zones, such as hot and humid, hot and dry, marine, cold and humid, and cold and dry. The following energy-efficiency measures helped researchers reach the 50% energy-savings target:


•Lighting power density was reduced in office spaces and occupancy sensors were used in infrequently occupied spaces.
•High-efficiency boilers, chillers, air distribution units, and service water heating equipment were installed.
•Plug loads were reduced by purchasing high-efficiency electronic equipment and using special controls that shut off equipment when not in use.

Large Hospital 50% Energy Savings: Technical Support Document details the technical analysis performed and the resulting design guidance that will enable large hospitals to achieve whole-building energy savings of at least 50% over the above standard. The large hospitals report also documents the modeling methods used to demonstrate how the design recommendations will help institutions meet or exceed the 50% energy-savings goal. This report found 50% energy savings can be achieved in large hospitals across all eight U.S. climate zones. Energy savings range from 50.6% to 61.3%, with the smallest savings in humid climates and extremely cold climates. The highest energy savings were achieved in marine climates, with relatively high energy savings achieved in dry climates. In general, for each climate type (humid, marine, and arid), savings were seen to decrease as the climate became progressively colder.

More...]]> http://ledsreview.com/blogs/editors/28.php http://ledsreview.com/blogs/editors/28.php Fri, 24 Sep 2010 12:03:59 -0700 More light usage with LEDs in place?
In paper published Thursday in the Journal of Physics D, researchers from Sandia National Laboratories argue cheap efficient lighting can increase consumption.

"Presented with the availability of cheaper light, humans may use more of it, as has happened over recent centuries with remarkable consistency following other lighting innovations," said Sandia lead researcher Jeff Tsao.

Comment: America is bathing in cheap electricity, compared to many European countries. To prevent excessive light usage energy tariffs should be increased gradually. It will make migration to energy efficient appliances faster and economically reasonable. It's still hard to convince consumers to buy expensive LED lighting in order to save $10 on electricity bill.

What do you think?


More...]]> http://ledsreview.com/blogs/editors/27.php http://ledsreview.com/blogs/editors/27.php Thu, 23 Sep 2010 11:30:43 -0700 Scottsburg picks LUXIM's Light Emittiing Plasma over LEDs for street lighting
  • Some US cities are turning OFF their streetlights to save costs.
  • Scottsburg, Indiana is switching to Light Emitting Plasma [LEP] from LUXIM.

  • City to save $70,000 a year AND reduce energy consumption by 50%.
  • City selected LEP for this high-output application, not LEDs.
  • Fixtures to be made locally by Stray Light Optical Technologies on site of former gasket factory


    More...]]> http://ledsreview.com/blogs/editors/26.php http://ledsreview.com/blogs/editors/26.php Fri, 03 Sep 2010 17:47:26 -0700 Will new sockets for LED non-retrofit emerge? More...]]> http://ledsreview.com/blogs/editors/25.php http://ledsreview.com/blogs/editors/25.php Tue, 12 Jan 2010 21:14:53 -0800 52 LED Lights Will be Designed in 52 weeks
    Kevin writes in his blog:

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    I will be developing a few wall and pendant products as the inspiration leads me. Of course in the course of one week, engineering documentation will be only what I need to execute the prototype, using Rhino CAD to lay out 3D models before making chips, and there will be no UL listing. However, every design will be completed by me including design, engineering, machining, fab, and finishing - which is a lot of fun.
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    The first weeks design is already complete and posted with details here.

    Specifications
    24"L x 20"H x 6"W. Utilizes Lynk Labs 12VAC Tesla LEDs on 12" 12W SnapBrite strip with SnapDriver power supply. The reflector/heat sink extrusion was also provided by Lynk Labs. Custom on-off switch. Black wrinkle body, tumbled aluminum with clear coat, and matte white finishes. All finishes are powder coat.



    All of the designs will be made available for sale to fund future work on the project through the Lumenique Product Center for anyone interested.

    Nice New Year Resolution, Kevin. Good luck!
    More...]]>     http://ledsreview.com/blogs/editors/24.php http://ledsreview.com/blogs/editors/24.php Wed, 06 Jan 2010 19:30:48 -0800     4-inch Substrates Slowly Gain Momentum Aixtron reported delivery of their CRIUS® MOCVD system in a 7x4 inch configuration to SemiLEDs. It will be the first 4-inch LED chip line at SemiLEDs' production facility in Taiwan.

    Do you know other companies already using 4-inch wafers for HB LED chips?
    More...]]>     http://ledsreview.com/blogs/editors/23.php http://ledsreview.com/blogs/editors/23.php Thu, 17 Dec 2009 09:11:04 -0800     OLED Train Delayed Philips, Osram recently announced commercial availability of its ORBEOS CDW-031 OLED panel .




    Diameter of the light output area is 79.00 mm (approx. 3"), the luminous efficacy at 186 mA is typically 23 lm/W. At 186 mA, the time to half luminance (L50) is 5,000hrs. Lifetime is strongly dependent on operating current: at 93 mA the L50 is 10,000 hours, and at 47 mA, 15,000 hrs. The tile is a little over 3 in. in diameter (80mm). Data sheet.

    With significantly lower efficacy than HB LEDs and exorbitant prices I liked someones note on the subject:

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    Is OSRAM planning for these OLEDs to be sold in the organics aisle of grocery stores?
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    More...]]>     http://ledsreview.com/blogs/editors/22.php http://ledsreview.com/blogs/editors/22.php Tue, 15 Dec 2009 18:42:45 -0800     FTC Proposes New Output-Based Labels for Light Bulbs new labels for light bulbs based on light output rather than energy consumption.

    The Lighting Facts label would provide information about brightness, energy cost, the bulb's expected life, color temperature (for example, whether the bulb provides "warm" or "cool" light), as well as wattage. The label also would require disclosures for bulbs containing mercury. The bulb's output in lumens—and a mercury disclosure for bulbs that contain mercury—would also have to be placed on the bulb itself.


    The Notice of Proposed Rulemaking was published Nov. 10, and comments on the change are being accepted through Dec. 28.

    I'd love to hear your thoughts on the proposed changes. Do you think it will make it easier for consumers to pick out energy-efficient bulbs or will it just confuse them more?
    More...]]>     http://ledsreview.com/blogs/editors/21.php http://ledsreview.com/blogs/editors/21.php Mon, 14 Dec 2009 22:37:27 -0800