Laser headlight, OLED pilot production, LED dimming: This was 2012 in LED Lighting
1. BMW develops laser-based headlight technology
Following the introduction of the full LED headlight, carmaker BMW regards laser light as the next logical step in the development of vehicle headlight technology. The development is already in an advanced stage.
2. Violet chips bring sunlight indoors with LED technology
There are different ways to generate with light by means of LEDs. The article explains why Mitsubishi Chemical’s VxRGB technology is superior to traditional approaches.
3. Osram’s near-omnidirectional LED lamp to replace 75W incandescent lamp
With its Parathom Pro Classic A75 Advanced, Osram is launching the first LED lamp capable of replacing a 75-watt incandescent lamp. Boasting a consumption of just 14 watts, the LED lamp uses over 80 percent less energy than its incandescent equivalent and has a service life of up to 30,000 hours. The lamp will be available to consumers from early 2012.
4. A19 LED bulbs: What’s under the frosting?
Standard A19 format light bulbs, found today in most lamps and luminaires, are now available in LED versions that retail between $20 and $40 per 40W- or 60W-equivalent bulb. Some bulbs are dimmable, some not, and some only with specific dimmers. They all advertise 25,000 to 50,000 hours’ expected lifetime, based on three to four hours’ daily usage. If you use them appropriately and sparingly, you might expect your light bulbs to outlive you. But why are the bulbs so expensive? Do they provide real value for the price? And why are some bulbs twice the price of the others?
5. Osram launches OLED pilot production line
With the launch of the pilot production line for organic light emitting diodes (OLED) in Regensburg, Osram has set an important milestone on the road toward volume manufacturing. According to the company, the plant is unique and the first of its kind worldwide.
In lighting applications high overall efficiency and power factor correction (PFC) are very important features, not only at higher power levels. Apart from that a ballast design should have good EMI behavior and low cost. This article describes a high power factor flyback converter for LED lighting that implements all these features and can be dimmed with an standard TRIAC based dimmer.
7. New generation of offline LED fixtures demand more from LED Driver ICs
As the driving force behind LED lighting’s adoption is the dramatic reduction of power required to deliver a specific quantity of light, it is imperative that the LED driver IC delivers the highest level of efficiency. Since LED driver circuits are generally nonlinear and not a purely resistive load, design engineers have to take specific measures to achieve the best efficiency.
8. Reference design delivers flicker-free TRIAC dimming for LED downlights
Power Integrations, a vendor of high-voltage integrated circuits for LED lighting, has introduced a new reference design (DER-281) detailing an 85%-efficient, 15 W PAR38 downlight driver that delivers flicker-free dimming without the use of unreliable high-voltage electrolytic bulk capacitors.
9. Heinrich Hertz Institute shows broadband communication from the LED ceiling light
With its Visible Light Communication (VLC) technology, the Fraunhofer Heinrich Hertz Institute presented a novel method of broadband transmission at the IFA 2011 trade fair.
10. Researcher develops smaller, longer-lasting LED light
The University of Miami’s College of Engineering has designed a light-emitting diode (LED) light that utilizes an array of LEDs 100 times smaller than conventional LEDs. The device is more flexible, maintains lower temperatures, and has an increased life-span over existing LEDs.
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
