The introduction of       LED grow light

LED grow light ,also called plant grow light,at present, the main part of the production was made of LED lighting beeds.lookinging at picture below.and it also be can designed in different colors.

LED grow lights are special lamps and lanterns. According to the importance role of lunar sun to plant,Cidly have developed its LED grow light on base of this principle.

Feature:

1.it have many kind of wavelength, which can coinciding with the spctral of plant photosynthesis

2.It can focus on specific wavelength of light to illuminate balanced plant;

3. Not only can adjust flowering crops and fruit, but also control plant height and nutrition;

4.The system of LED grow light produce less heat, taking up less space ,it can be used for cultivation three-dimensional multi-layer combination system, and realize low heat load and production space miniaturization;

Application:

It is the new production cidly have developed.After application testing,the wavelenght of LED grow light is very suitable for plants grow、blossom and fruit.,as we know, flowers will be fade if we put them in the room for a long time,the main reason it is lack of lunar lighting.,so cidly developed its new technoledgy,by means of the spectrum plants needed ,cidly use the LED grow light illuminate the plant , not only can promote its on the grower,but also can extend the flowering, as well as improve the quality of the flowers.see these picture as an example. We use LED grow light instead of lunar lighting,it also can grow well.

As cidly declare,these LED grow light have three basic advantage .

As the light supplement,the light can enhance its effective lighting time in any time,no matter in the evening or night it can lengthen and control the light which plant needed.

In greenhouse or laboratory ,it can completely replace natural light and promote plant grower.

Working principle

Light environment is important physical factor to the plant development, it is the most important technology to adjustment the light quality and control plant morphological in the field of culture

Miya

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The speed at which LED lumen output is increasing is staggering. Bridgelux has just released an LED with 135 lumen/W. They were able to get commercial grade performance from a silicon substrate LED for the first time in the industry. A single 1.5mm diameter LED operated at 350mA has output 135 lumens (4730K) at 2.9V. In the industry silicon carbide and sapphire substrates used to create epitaxial wafer, but the materials and process are expensive. Bridgelux went with low cost gallium nitride, grown, wafers from 150 - 300 mm diameters, with a 75% reduction in cost, in comparison.

The Bridgelux CEO, Bill Watkins, has this to say about the tech, "The significantly reduced cost-structures enabled by Silicon-based LED technology will continue to deliver dramatic reductions in the up-front capital investment required for solid state lighting. In as little as two to three years, even the most price-sensitive markets, such as commercial and office lighting, residential applications, and retrofit lamps will seamlessly and rapidly convert to solid state lighting.”

We will see these emerge in 2-3 years.

Eavesdropper

Original bulb style lighting of the A44

LED illuminated A44

Philips has donated 294 high brightness LEDs to the Netherlands in conjunction with the RWS (Dutch Highway Authority the Rijkswaterstaat. Used to illuminate 17KM of the A44 highway, the SpeedStar LED solution is the first of its kind. Estimated to save 180,000 kWh per year, approximately energy consumption of 50 households, it saves over 40% of the energy that was used to light the highway's old lamps. “The aim for our collaboration with the Rijkswaterstaat is to implement lighting solutions that both save energy and require less maintenance work on the roads,” comments Frank van der Vloed, General Manager, Philips Lighting Benelux. “Together, we will help provide a safe night time driving experience while helping to lower energy consumption.”

Remote monitoring allows the installation to be dimmable, saving energy during slow periods, and brightened as traffic increases in the evening. Unfortunately, this section of highway is an experiment only at this time. I'm sure the trend will continue. When LEDs are good enough for car headlights, then it's finally bright enough for streetlights.

Eavesdropper

source Phillips PR

University  of Michigan researcher Jinsang Kim and his team demonstrated a material that shines with phosphorescence in an organic compund. Normally this effect is only seen in artificial metalic compounds, the team's organic crystals radiate a green, blue, yellow, and orange color under ultraviolet light. To show different colors the chemical composition is altered. They are hoping that this discovery will help improve the current OLED (organic LEDs) and SSL. The quantum yield of this new phosphoric device approaches 55%. This is a measure of the efficienct of converting energy to photon. This material is primarily based on Aromatic Carbonyls (carbon and oxygen) that form strong halogen bonds. The molecules get tightly packed in the crystal, supress vibration, and heat losses as the excited electrons move states. The goal is to use this tech in OLED to replace the current use of precious metals in fabrication. Good luck Kim!

Eavesdropper

Those light-emitting diodes marketed as safe, environmentally preferable alternatives to traditional lightbulbs actually contain lead, arsenic and a dozen other potentially hazardous substances, according to newly published research. “LEDs are touted as the next generation of lighting. But as we try to find better products that do not deplete energy resources or contribute to global warming, we have to be vigilant about the toxicity hazards of those marketed as replacements,” explained Oladele Ogunseitan, chair of UC Irvine's Department of Population Health & Disease Prevention. He and fellow scientists at UCI and UC Davis crunched, leached and measured the tiny, multicolored lightbulbs sold in Christmas strands; red, yellow and green traffic lights; and automobile headlights (non-flaming) and brake lights. Their findings? Low-intensity red lights contained up to eight times the amount of lead allowed under California law, but in general, high-intensity, brighter bulbs had more contaminants than lower ones. White bulbs had the least lead, but contained high amounts of nickel. Lead, arsenic and many additional metals discovered in the bulbs or their related parts have been linked in hundreds of studies to different cancers, neurological damage, kidney disease, hypertension, skin rashes and other illnesses. The copper used in some LEDs also poses an ecological threat to fish, rivers and lakes.

Risks are present in all parts of the lights and at every stage during production, use and disposal, the study found. Consumers, manufacturers and first responders to accident scenes ought to be aware of this, Ogunseitan said. When bulbs break at home, residents should sweep them up with a special broom while wearing gloves and a mask, he advised. Crews dispatched to clean up car crashes or broken traffic fixtures should don protective gear and handle the material as hazardous waste. Currently, LEDs are not classified as toxic and are disposed of in regular landfills. Ogunseitan has forwarded the study results to California and federal health regulators. He cites LEDs as a perfect example of the need to mandate product replacement testing. The diodes are widely hailed as safer than compact fluorescent bulbs, which contain dangerous mercury. But, he said, they weren't properly tested before being marketed as the preferred alternative to inefficient incandescent bulbs, now being phased out under California law. Ogunseitan continued, “I'm frustrated, but the work continues. Every day we don't have a law that says you cannot replace an unsafe product with another unsafe product; we're putting people's lives at risk. And it's a preventable risk."

Eavesdropper

For a team of technology whiz kids at the University of Groningen in the Netherlands, having a 3-D theater to work in just wasn’t enough. Using the curved 33-by-9-foot 3-D screen, a group there has created a touchscreen capable of more than 100 points of simultaneous contact. To create their super-sized touch panel, the team converted the 3-millimeter dark acrylic screen panel into a touch screen by backlighting it with six full HD projectors. The rest of the hardware isn’t particularly high-tech; to create the touch sensitivity they used six Optitrack cameras, 16 inexpensive infrared emitters, and 1,000 LEDs. Three computers (described by the team as ‘old’) are connected to the cameras (two cameras per computer) and feed data to the visualization system running on a fourth computer. Even with the old computers, they have enough processing power to detect 100 points of contact simultaneously with no delay. More points of touch are possible but the program starts to slow at that point, a problem that seems like it could be fixed with some better hardware.

Eavesdropper

When off, the ‘Good Afternoon Clock’ looks like nothing more than a plastic circle hanging on the wall with a cord attached. But when it’s on, it becomes a beautifully simple clock that tells time with thin beams of white light coming from the ring and shining inward. The lights tell hours, minutes and seconds in the most clutter-free clock display ever. The delicate and ephemeral nature of the light beams may well be a comment on time itself: it is fluid, fleeting and intangible. The Good Afternoon Clock was created by the MILE Project, a group of three friends who met at the University of Tsukuba. The software engineer, acoustic engineer and interior designer all bring their own unique talents to each project they embark on, and the Good Afternoon Clock is just one of their fascinating and beautiful designs. Unfortunately, it doesn’t look like this particular design is being produced for purchase at this time. See the creator's website here.

Zero

Ostendo Technologies, Inc. and Technologies and Devices International, part of the Oxford Instruments Group, have recently announced that LED structures grown on their semi-polar GaN wafers have resulted in more than 2.5x the emission intensity of the c-plane GaN based LED structures. Ostendo & TDI had entered into an Information Exchange Agreement with Palo Alto Research Center (PARC) in 2008, pursuant to which they agreed to make semi-polar GaN wafers available for PARC to grow LED and Laser Diode structures on the supplied wafers, and independently validate and report the achieved results.  As part of their validation, PARC has grown MQW LED structure on our semi-polar GaN side-by-side with a reference c-plane LED structure in the same MOCVD run.  Some of the key results verify the following: The LED structure grown on their semi-polar GaN achieved more than 2.5x more emission intensity than the reference LED structure grown on c-plane GaN. The new semi-polar GaN allowed for higher indium (In) incorporation resulting in longer peak wavelength of ~25 nm for the structure grown. “This is an excellent validation of our work in the semi-polar GaN area for the last two and a half years as it verified the main advantage of our semi-polar GaN and should help encourage LED makers to start considering it for future LED brightness improvements,” said Dr. Hussein S. El Ghoroury, CEO of Ostendo. Earlier in 2010 Ostendo and TDI announced the availability of semi-polar (11-22) GaN layer on sapphire substrate wafers using Ostendo’s proprietary design and TDI’s proprietary Hydride Vapor Phase Epitaxy (HVPE) technology.  This joint development now provides the opportunity to leading High Brightness Light Emitting Diode (HBLED) and Laser Diode developers to increase optical efficiency significantly compared with structures grown on c-plane GaN substrates.

Zero