PC Memory Company Rambus Focus on LED Market

Rambus is best known for its PC memory technology. Recently it has developed a process for making flat LED plates to replace overhead office lighting.

The company on Wednesday at the Lightfair Intenrational conference will show off prototypes of a system that it says can lower the manufacturing costs of LED lighting for commercial buildings and flat-panel displays.

Last year, Rambus bought patents from Global Lighting Technologies related to components of a flat LED fixture. Having developed product prototypes and a manufacturing process, Rambus is now seeking to license that technology to other companies, executives said on Monday.

The components to a flat-plate LED designed for overhead lights. The textured gray layer is a lens to reflect light uniformly on a flat surface,
(Credit: Rambus)

The technology itself is not the actual LEDs, but components for an edge-lit lighting panel. LEDs are placed on the edge of a panel, which is about a half-inch thick. A “light guide,” made up of textured plastic, acts as series of tiny lenses to reflect the light so that it emits uniformly from the flat plate.

The prototypes that Rambus plans to show are two rectangle shaped light sources–one 2 feet by 2 feet and the other by 3 inches by 43 inches.

If the company is successful, larger versions of those flat-plate light sources would replace florescent bulbs used in office buildings. In a commercial product, manufacturers would license the process technology and use LEDs from another supplier, Rambus executives explained.

“My guess is that we’re about two years away from parity with fluorescents because LEDs are on a faster cost curve,” said Tim Messegee, vice president of marketing at Rambus.

Now companies or consumers buy LEDs based on the cost savings over time and for other benefits, such as the lack of mercury and the longer life of LEDs, he said.

Affordable LED Lamps Come to Korean Homes

As we all know that LED lamps have long been known for their efficiency, but due to high prices they have been mostly restricted to expensive industrial and consumer goods like billboards, TVs and automobile lights.

But yesterday Philips, the Dutch electronics company, announced it would begin selling LED bulbs at the local discount chain E-mart.

Branded “Ambient LED,” the lights work in sockets for incandescent or halogen lights. Ambient LEDs last 45 times longer than incandescent bulbs. Replace one incandescent light with an LED, and it can cut 30 kilograms of carbon dixiode emissions per year, the same as planting a tree.

“With hopes of introducing high-quality lighting to consumers, we are offering LED lights at a very competitive price,” said Kim Yun-yeong, vice president of the company’s light division.

Ambient LEDs are priced around 20,000 won ($18), about half the cost of previous varieties.

LG Electronics also began selling LEDs for homes in February. The Seoul-based company announced yesterday that it received a certification from the Korea Energy Management Corporation for the product’s exceptionally high energy efficiency.

Compatible with halogen sockets, LG LEDs can be used for 12 hours daily for 10 years and cost 34,000 won.

“We plan to accelerate our LED light business in the coming days by introducing eco-friendly bulbs different from other lights,” said Kim Yong-hwan, director of the company’s solution business team.

LG plans to use those lights at its Yeouido headquarters when they are renovated this year.

Samsung Electronics, meanwhile, is adopting a wait-and-see approach, still uncertain whether LEDs will succeed in the consumer market. Samsung has been making LEDs for industrial purposes since 2007.

Start Developing Snap-in LED Light

It is said from LED lighting company Bridgelux that out with the Edison screw-in bulb and in with the snap-in lighting module.

The Livermore, Calif.-based start-up said Wednesday it has designed a lighting module called Helieon that combines Bridgelux’s LED lights and a snap-in interconnect system made by Molex, which is based in Lisle, Ill.

The interconnect system will make it easy to install LEDs and upgrade them when more efficient or brighter lights come out, the companies said.

The Helion system, which will be available in May for $20, is aimed at lighting manufacturers that build actual lighting fixtures. The Helion will be available with a light output between 500 and 1,500 lumens, the equivalent of between 40 watts and about 100 watts for incandescent bulbs but will use significantly less electricity.

Bridgelux says that the packaging and efficiency of its lighting system is a step toward making LED lighting more cost-effective when compared with other forms of lighting. “Solid state lighting is poised to displace conventional incandescent, fluorescent and other technologies in many high-volume general lighting applications,” Bridgelux CEO Bill Watkins, who joined the company earlier this year, said in a statement .

Bridgelux has signed on some lighting fixture manufacturers to use Helieon, including architectural lighting company Focal Point. But as it goes after the general lighting market, it faces competition from a number of LED start-ups and established lighting companies.

Motion Sensor Light

Make your home safer with a light that comes on when you walk by.

Enjoy instant-on light your home—closet, pantry, shop, garage, basement, garden shed, virtually anywhere! No fumbling for a switch—this battery-powered light detects motion and switches on automatically.

The light is simple to set up and easy to install. And the light comes on instantly and is very bright. Comes on as soon as I round the corner of my house to the front door and it actually brighten the area well.

Having husband with some mental deficiencies from head trauma, he sometimes couldn’t remember how to turn off/on light switches; now no need to worry about him not being able to see when he gets up in the dark; I have not attached them permanently to the wall, just set it on the floor next to baseboard and adjusted with swivel so light shines exactly where we want it.

LED Diogen Lighting to be the Next-generation Light Bulb

Diogen makes the next generation of power-sipping light bulbs: LEDs, short for light-emitting diodes. The unique retrofit design of the Diogen Bulb universally replaces standard incandescent and compact fluorescent(CFL) bulbs and is both UL and CUL certified.

The light output and color rendering of this new bulb is the equivalent of the current 60-Watt incandescent bulb available in the market but uses only 12 Watts of energy consumption.

The Diogen Bulb has a lifespan 40 times greater than incandescent and 6 times greater than the current CFL bulbs offered in the market today and is completely safe and is Mercury-free, unlike CFL products.

The colors are more vibrant than you can get in an incandescent, they use up to 98 percent less power than comparable incandescents, and they have a long life. A string of decorative lights will last forever. It can take 50,000 to 100,000 hours of use, well over 20 years.

Also, LED lights are cool to the touch and don’t contain mercury, unlike CFLs — which requires special handling for disposal.

LED’s last about 40 times longer than regular incandescent lights and six times longer than CFLs currently on the market.

It’s great for us because we can afford to go more green — not only from using less power, but also from being able to have enough power to do a show. And we’re over 50 percent with LED lights in the show.

Revolutionary LED Showroom Opened in Texas

It was reported that LED Illumination Direct opens its one-of-a-kind, green showroom in the Waco area. This 2,500-square-foot showroom hosts LED Illumination Direct’s 200 different varieties of LED products. LED Illumination Direct’s showroom demonstrates LED lighting capabilities by comparing its LED lights to incandescent, CFLs, and Fluorescent lighting and showing various light spectrums and colors available in the LED light.

“Our doors are open to commercial, industrial and residential consumers who are looking for the best selection of quality LED products to provide energy efficiency and solid state lighting,” says Greg Klepper, CEO of LED Illumination Direct.

LED Illumination Direct’s lights are recyclable, energy efficient and cost effective and emit 90% less heat than a conventional bulb. The LED low emission bulbs can be touched by the human hand, unlike that of incandescent, CFLs, and Fluorescent lights. The showroom is set up where the lights can be touched, held and controlled by anyone present.

“Greg Klepper and LED Illumination Direct produce the highest quality LED products on the market today and are the leaders of the LED lighting industry,” said Anthony Newberg, Senior Vice President Sales & Marketing, Dealers Electrical Supply Company. “Without LED Illumination Direct the lighting industry would not be where it is today.” Dealers Electrical Supply is the authorized distributor in Texas for LED Illumination Direct.

The technologically advanced showroom at LED Illumination Direct displays LED lighting products ranging from LED tube lights, LED high power bulbs and spotlights, LED household lights, LED PAR/Flood lights, LED flexible strips and LED Modules.

LED Lighting Types include:

• High Bay
• High Power Bulb
• Household Bulb
• Low Bay Light
• PAR Light
• Street Lights
• Tube Light
• Bi-Pin Down Light
• Growlights
• Grid Lights
• Wall Washers

Supertex LED Driver Uses Closed-Loop System to Deliver Maximum LED Light Performance

It was reported from SUNNYVALE, CA on Feb 17 that supertex /quotes/comstock/15*!supx/quotes/nls/supx  (SUPX  25.70, +0.05, +0.19%) , a recognized leader in high voltage analog and mixed signal integrated circuits (ICs), today introduced the HV9963, a closed-loop LED driver IC with pulse width modulated (PWM) dimming capability designed to optimize LED performance and efficiency and extend LED life. The IC excels in DC/DC applications such as RGB or white LED backlighting, LCD TVs and monitors, and LED lamps for general lighting.

The HV9963 utilizes a closed-loop system to control the current going to the LED string, which is an active, real-time system that continuously monitors the LED current via sense resistors. The HV9963 includes a 1.0MHz transconductance amplifier with a tri-state output, which closes feedback loops in the sensing process and provides accurate current control. It can be synchronized in applications requiring multiple LED drivers to prevent the system sub-harmonic oscillations that are often associated with driving multiple driver schemes.

The HV9963 also features hiccup mode protection for both short- and open-circuit conditions, and a high PWM dimming ratio. The IC operates in a constant frequency mode for use in a variety of converter topologies such as buck, boost and SEPIC.

“The HV9963’s closed-loop system enables accurate line and load control of the LED current over its entire operating range,” states Ahmed Masood, Vice President of Marketing for Supertex. “This IC also includes controls that allow PWM dimming at very low duty cycles, resulting in a contrast ratio of up to 5,000:1.”

The HV9963 is available in a 16-lead SOIC package (HV9963NG-G). The part is RoHS compliant. Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing is US$0.85 each for the HV9963NG-G in 1K quantities.

About Supertex Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused in high voltage analog and mixed signal products for use in the medical, LED lighting, imaging, industrial, and telecommunication industries.

PITTSBURGH Considers LED Streetlights

It was said from a new study that Pittsburgh needs to replace 40,000 streetlights, and officials have the option of installing LED lights.

According to officials, this would be a big expense now, but could mean big savings later.

The city has already begun to test LED lights by installing 150 in Shadyside and South Side.

Researchers at the University of Pittsburgh concluded that the city could save millions of dollars by switching to LED lights.

The lights may be a bit more expensive, but they last longer and they’re much more energy efficient than the current lights.

Researchers studied several different options but concluded that LED offered the best bang for the buck. “An average streetlight would last about two years before you have to replace it; an LED light would last 15 years,” said Councilman Bill Peduto. “The energy costs associated with it are about 70 percent less than the regular streetlights. Put those together and you will see savings of nearly $2 million annually.”

Peduto said his goal is for Pittsburgh to become a leader in LED lighting. He hopes the city will begin installing more LED lights by the end of this year.

Fantastic Motion Sensing LED Light

There are times when it’d make life a lot easier if lights would just come on.  Be it because you usually have your hands full in that area or any other reason, it’d just be nice.  Now this little motion sensor won’t turn on all the lights in the room, but it will turn on a small light to help you find your way.  Plus it could be used as a security device, so you’ll know if someone is moving around where they shouldn’t.

This simple little light could even be used in other areas besides in your home.  It could also be grabbed for when you go camping if you need some small lights to keep you from tripping over anything.  On the light itself you can adjust the sensitivity of the motion sensor.  You can also just shut off the light entirely.  It runs on 4 AAA batteries which aren’t actually included.

Rockler Recalled LED light kits

Legal news for product liability attorneys. A voluntary recall of LED light kits was announced after discovery of defective wiring.

CPSC alerts product liability lawyers- Rockler Companies Inc. announced voluntary recall of LED light kits.

Washington, D.C.—Rockler Companies, Inc., of Medina, Minnesota and the U.S. Consumer Product Safety Commission (CPSC) have announced a voluntary recalled of LED light kits. Nearly 2,200 LED light kits were recalled on January 12, 2010, as reported by the CPSC.

The CPSC has urged consumers to stop using the recalled LED light kits immediately unless otherwise instructed after the discovery of defective wiring in the light kits. The defective wiring can cause the battery pack to overheat and explode, which poses a risk of burn and fire. At this time no injuries and/or instances have been reported. This recalled product is described as Rockler LED lights with either an interchangeable spotlight head, or a magnifying head. The recalled product models have stock numbers 26429 (spotlight or 27017 (magnifying). The stock numbers are printed on the products packaging. The LED light kits were sold at Rockler Woodworking and Hardware and other specialty stores across the country from March 2009 through October 2009 for the retail price of $60. All consumers who have purchased the product can contact Rockler Companies at (800) 260-9663 to receive a fee repair kit and installation instructions.