Transcript LED - Why Such Interest?

LED - Why Such Interest?
Compact light source
Robust
Reliable performance
Long life
LED and Driver from OSRAM
With the first generation of thin-film LED…
…in 2001 OSRAM pioneered thin-film technology. This technology – which makes almost all
the light generated in the chip available for use – has given rise to such innovative products
as OSTAR® Projection. The new high-flux LED from OSRAM are powerful enough to be
used in mini projectors
OSRAM UK | OEM Seminar 2007
What is an LED ?
A light emitting diode (LED) is a solid state electronic
component
An LED produces light by injection luminescence
Individual LED’s are referred to as discrete
Discrete LED’s are mounted on a printed circuit board
PCB for use
LED assemblies for lighting are referred to as LED
modules
OSRAM UK | OEM Seminar 2007
LED die developments
OSRAM UK | OEM Seminar 2007
What are the advantages of LEDs?
Safe low voltage operation
A single LED will operate on no more than 3.5V
OSRAM LED modules operate at either 10 or 24V
Design cost reductions
Fit and forget installation
Relaxation of localised heating considerations
Certain safety systems are not required
Cost effective solution
Offers new possibilities
 Compact luminaires
 More flexible solutions
 Full colour mixing possible
OSRAM UK | OEM Seminar 2007
The real life
Representative lifetime figures based on specific operating conditions
InGaAlP (Indium Gallium Aluminium Phosphide)
Red
Orange
Yellow
150,000hrs
250,000hrs
125,000hrs
InGaN (Indium Gallium Nitride)
Blue/White 50,000 – 60,000hrs (with silicone resin)
Green
50,000 – 60,000hrs
OSRAM UK | OEM Seminar 2007
The wavelengths
OSRAM UK | OEM Seminar 2007
A linear solution
LINEARlight® module – LM01A
The LINEARlight® module is a basic, solid board module
Supplied in strips:
448mm x 10mm x 5mm containing 32 LEDs = 71 LEDs / metre
PCB can be broken down into sub units 56mm x 10mm with 4 LEDs
Power consumption: 3.2 to 4 Watts / module = 7.1 to 8.9 Watts / metre
Additional lenses can be added
OSRAM UK | OEM Seminar 2007
Signage solutions
BACKlight® – LM03A
Supplied as a chain of 8 cable connected PCBs
30mm x 30mm x 5mm each containing 4 LEDs
PCBs can be separated by cutting the wire links
The PCBs can be arranged in 3D shapes if required
Power consumption 3.2 to 4W per complete module
Depending on spacing between PCBs
module length = 240 to 555mm
 Ideal for signage
OSRAM UK | OEM Seminar 2007