What is LED?
- LED stands for "Light Emitting Diode"
- A LED is a plastic-sealed semi-conductor with phosphorus coating that emits light when an electric current is passed through it
- It is not a bulb and does not use a filament
- LEDs are made without glass
- The light is not created by heat, it is emitted directly from electrons (cold light)
- LEDs are extremely energy efficient: a common light bulb only converts 10 % of electricity into light, 90 % is wasted energy. A LED however converts 40 % - 50 % into light
Measures of comparison
| Millimeter | Indicates the size of the LED in diameter |
| Watts | Measures the electrical power consumption by a light |
| Lumens (lm) | Most dependable measure of luminous intensity. The “standard” measure of the total light output |
| Lux (lx) | Measure of the illuminance: shows how many lumens per square meter are reaching a certain surface (1lx=lm/m2). The Lux value is the most common known photometric unit and indicates very clearly the lightning condition at a special location |
| Candela (cd) | Unit of the luminous intensity. It’s the power emitted by a light source in a particular direction. A common candle emits light with a luminous intensity of roughly one candela (=1 lx in distance of 1 meter) |
Did you know?
Recycling
LEDs contain no mercury, are extremely energy efficient and at least 90 % of a LED is recyclable*
Lifetime
If you use your LED bulb for 8 h a day, that bulb is rated to last 17 years
COB Technology
COB LED
- COB stands for CHIP ON BOARD and is a new technology of LED packaging for LED light engine in the high performance area
- COB LED is an LED illuminant which consists of an variable amount of LED chips
- These multiple LED Chips are glued directly onto a ceramic or aluminium board
Many advantages result from that structure
- Superior thermal performance for increased life, stability and reliability
- Flat and compact design
- High brightness
- High energy efficiency
- Very long lifetime (up to 100,000h)