2014年2月26日星期三

the lighting of choice for years to come

By meeting demand for new installations of street lights which is said to be 100,000 per year in Japan, Sharp is offering these units as powerful floodlights for crime deterrence and emergency safety lighting featuring both environmental performance and nighttime visibility.In the past few years, LEDs have made huge advances in energy efficiency. Industry sources and outside experts say LEDs are now the most energy-efficient led flood light source available. They use far less energy than other bulbs, last a lot longer, and cost less to use over their lifetime.For now, the lights still cost more than the average consumer is used to spending on a light bulb -- a lot more. Prices for LEDs on the market today can be more than five times what an incandescent bulb costs. However, the LEDs use about 85% less energy and last 30 times longer. They also use about half as much energy and last five times longer than compact fluorescent lights.

Manufacturers' game plan is to first target commercial and industrial customers, for whom the economics of LEDs are increasingly too compelling to ignore. Such customers leave their lights on most or all of the time and pay labor costs each time bulbs are changed. Longer-lasting lights that use less energy thus offer them significant savings over time.Then, as sales increase, creating economies of scale and bringing down production costs and prices, the industry will expand its marketing to residential customers in a push that many observers expect will make LEDs the lighting of choice for years to come.

LEDs consist of a small semiconductor that emits photons when electricity is applied. For decades, they've been used as indicator lights for small applications like remote controls and stereos. A major hurdle to their broader use for industrial and residential lighting, however, was manufacturers' inability to boost brightness without increasing power consumption too much. Advances in materials used in LEDs have led to an explosion in technological improvements at the leading LED companies over the past two years. An LED light and fixture on the led high bay light, produces about 60 lumens per watt, a measure of lighting efficiency. That product is about as bright as a 65-watt incandescent bulb, while using only about one-sixth of the power. The LED lamp also has an estimated life of about 50,000 hours, about 33 times longer than that of an incandescent light.

2014年2月21日星期五

which converts the light from an LED into laser light

Andrews (Fife, Scotland) have developed a laser with a variety of colors that is powered by a simple, low-cost light-emitting diode (LED). This compact visible laser can be created at a fraction of the cost of existing technologies and used for a wide range of applications, from medical treatment to light-emitting clothing.

The breakthrough by physicists professor Ifor Samuel and Graham Turnbull uses plastic-like semiconducting materials. These flexible light-emitting materials combine the virtues of semiconductors with the simple manufacture of plastics, and have even been used to make a light-emitting sticking plaster for the treatment of skin cancer. Professor Samuel said, "For over forty years visible organic lasers have required another laser to make them shine. We have now developed a low-cost, easy to make plastic laser, which converts the light from an LED (of the kind used in torches and traffic lights) into laser light. LEDs can be battery powered, and so this hybrid LED-laser approach can make very simple compact emitters. The lasers can give a variety of colours and are suitable for various applications such as spectroscopy or chemical sensing."

Collaborator Graham Turnbull said, "The new lasers are incredibly cheap and disposable and so could be used in single-use medical diagnostics, or in extreme environments such as sensing for explosives.Conventional visible lasers can cost anything between a few hundred pounds to tens of thousands, but our new laser can be created for less than five pounds. These LED-lasers offer a better, smaller and brighter alternative to conventional light sources. They are the next generation of low-cost lasers.

Specifically designed for light guide-based backlighting of displays in high ambient light conditions, such as those found in today’s TFT displays, automotive dashboards and aircraft cockpits, the slim profile of the CERAMOS? Reflector LED is well suited for in-coupling into light guides as thin as 2 mm. This feature also makes the LED ideal for edge lighting for LCD TVs and monitors.

The CERAMOS? Reflector LED is powered by OSRAM's patented ThinGaN? LED technology, which enables it to operate at a high level of optical efficiency – 70 lumens per watt at 80mA. CERAMOS? delivers a long life of 50,000 hours, and its SMD ceramic package enables excellent performance at high operating temperatures (up to 150°C), and is compatible with standard surface mount processes.

2014年2月13日星期四

high power LED lighting solutions

Internal circuitry includes a reverse protection diode as standard and operates over a wide voltage range. Termination is achieved by standard solder/crimp tags.The 533 series professional LED panel indicator is fitted with a raised, coloured diffused lens assembly to provide an ideal wide angle viewing.The precision turned housing is manufactured from brass with a high quality, bright nickel finish and is supplied complete with full mounting hardware.

A diversified provider of cooling, power supply, PC enclosure solutions for consumer and industrial applications, today announced a brand new range of high brightness, high power LED lighting solutions, for indoor, outdoor and other customized applications, under the GlacialLight brand.


GlacialLight indoor LED solutions present a fantastic low voltage alternative to the old style incandescent lights used in homes, offices, retail and other environments. Offering product lifetimes in excess of 50,000 hours, GlacialLight indoor LED solutions offer the perfect blend between product innovation, lighting aesthetics and efficient energy & thermal management and are available for a wide variety of indoor applications.

GlacialLight PAR30/38 lamps for instance, available in varying wattages, are most suited for track lighting, accent lighting and recessed lighting applications. GlacialLight high brightness solid-state LED lamps, especially the PLMR16-13, are an ideal alternative for traditional MR-16 halogen lamps. Possessing similar dimensions to the MR-16 halogen lamp, PLMR16-1W3 is equipped with a high power LED light source, efficient optical lens system and an optimized thermal heat sink for better heat dissipation. GlacialLight LED Bar solutions, including the LBR8 and LBR234, are designed for use in cove lighting, task lighting, cabinet lighting applications.

2014年2月9日星期日

LED lighting is in the front rank of China

Semiconductor lighting industry in Shenzhen develops rapidly in recent years. Statistics have shown that, there are over 1500 enterprises engaged in developing and sales of semiconductor lighting in the city, by the end of 2011. And in 2011, the output value of Shenzhen LED industry is about 70 billion yuan RMB, increasing by 25.9% year-on-year. This growth approximately composes 35% of total LED output value in China, and accounts for 50% in Guangdong’s. In particular, the city has set up a completely industrial chain which covers "chip - packaging - applications - equipment - material - test". Among them, the middle and lower reaches have shown great advantages, becoming one of the largest LED packaging bases and application products development bases. In addition, the quality, output and export of LED packaging, displays, LED lighting is in the front rank of China.

The combination of the these multi-color LED arrays together with the proprietary TRR technology from Wavien, provides low-cost, high-output solutions for spot lights, moving heads, and other lighting applications in the entertainment and projection markets.Wavien's TRR technology recaptures light lost in standard optical system back to the output of the system, transforming it back into useable light. The normally wasted colored light from each LED is captured by the TRR reflector and reflected back to the same LED for recycling by its unique optical properties. As a result, each colored LED recycles the wasted light independently with increased brightness. Although brightness improvements are dependent on color, an output improvement, as high as 100%, can be achieved.

"Wavien continues to advance the LED light recycling technology and offers outstanding brightness by recovering and recycling high angle light from the LED that is normally wasted with traditional LED coupling systems," stated Dr. Kenneth Li, President and CEO of Wavien, Inc., who is also the inventor of the recycling technology. Dr. Li added: "This new TRR technology invention further improves brightness of many entertainment lighting systems currently using Luminus Color Mix LEDs and pico-projector systems using Ostar LEDs."