The lumens or ‘brightness’ measure is an important one to look at. Incandescent and CFL bulbs shoot light in 270 degrees all around them. LEDs are built to shoot light in 15, 30, 45, 120, or 180 degrees depending on the bulb. The reason is because LEDs are directional lighting. They shoot light in the [...]
The yellow light-emitting diode (LED) gap always trouble Philips till now. Recently, researchers with Philips Lumileds (San Jose, CA) have developed a monochromatic nitride diode to closes the gap. The phosphor-converted (PC) amber LED demonstrated by Regina Mueller-Mach and her colleagues uses the down-conversion of blue light from an indium-gallium-nitride (InGaN) LED to longer-wavelength light [...]
Nowadays, LED products are being used in numeric displays and indicator lights to a range of new and potential new applications, including exit signs, accent lights, task lights, traffic lights, signage, cove lighting, wall sconces, outdoor lighting and downlighting.
The following is the list of LED applications:
• Streetlights • Large scale video displays • Architectural lighting [...]
LED stands for “light-emitting diode,” a relatively new source of light. According to Wikipedia, the principle of generating light with a solid-state device was discovered early in the 20th Century, but it wasn’t until the 1960s that useful LEDs became commercially available. Only recently have LEDs developed in brightness and color technology to be considered [...]
A diode is the simplest sort of semiconductor device. Broadly speaking, a semiconductor is a material with a varying ability to conduct electrical current. Most semiconductors are made of a poor conductor that has had impurities (atoms of another material) added to it. The process of adding impurities is cal doping.
In the case of LEDs, [...]
Schematic assembly of radial LEDs
Since the invention of the electrical light, the design and functionality of bulbs improved constantly. Consisting of fluorescent tube, halogen or energy-saving lamps, the increasing development of this “extremely radiating source” of modern life allowed new application possibilities. The mass spreading of LED lights represents the beginning of a revolution that [...]
Because solid-state lighting is a new technology, it will bring with it a number of new system-level attributes. These include programmability, small volume, ruggedness and immunity to vibration, compatibility with environmental extremes (cold and heat), and an enhanced efficiency in directed illumination. Ultimately, these system-level attributes are expected to enhance considerably the competitiveness of solid-state [...]
Molten aluminum body,stainless steel polishing or Aluminum alloy faceplate,waterproof tie-in,silica gel rubber airproof cover,arc poly angle refractable glass,durable,waterprllf,dustproof and no creepage. LED lamp-house,various colors compounding-form as single color,double colors,seven colors gradual changing and seven colors jumpy changing. Extensively applied in lighting of village,courtyard,downtown street,etc,bring splendid scenes to life.
Underground lamp: input voltage: AC220V/110V, protection grade: IP67, [...]
LEDs (Light Emitting Diodes) emit only certain wavelengths of light and have a fantastic lifespan (around 50,000 hours), making them the perfect solution to efficient plant growth. The reason why LED growing is not commonplace is because it has been difficult to find LED lights powerful enough to to sustain good growth. Technology has rapidly [...]