Transcript Document

THE LED REVOLUTION
Solid State Lighting is
the most disruptive
technology to hit the
lighting industry in
60years.....
LED technology will create the same disruptive
revolution in the Lighting Industry as Digital Recording
MP3 did in the Music Industry .
1. LED technology will enable new possibilities for Lighting design in existing
applications and open up new applications where the sky will be the limit.
2. It will fundamentally change today’s Lighting Industry which consists of a few global
lamp manufacturers and thousands of local and regional fixture manufacturers .
3. The market will change from a lamp replacement business into a system replacement business ,
resulting in a declining ( conventional) lamp business and a booming LED- module and systems
business. Totally new players will enter the business challenging the existing players of which a
few have positioned themselves well to emerge as successful future players .
Customer says
“I want to use LEDs”
What is their goal?
Saving energy?
Saving Money?
Better Lighting?
Being “Green”?
The history of LED’S
 1929 - Soviet patent granted for a “ light
relay”
 1961 - Modern LED invented at
Texas Instruments
 1962 - Red LED invented
- First mass produced “indicator lights”
 1970’s
- Used extensively in indicator lights
and numerical displays
- Increased light output10 X
- First colored LED produced
 1980’s - Traffic signals
 1990’s - Exit signs and automotive lamps
 late 1990’s - First blue LED with vastly
increased light output
- RGB becomes practical
- mainly used theatrically
 2000 - High brightness white produced
using RGB method and phosphor coating
method
 2008 - Introduction of wide array of LED
lighting products
What is an LED?
Light Emitting
Diode
Colour
White
Anatomy of an LED
How do LED’s Work?
Like a normal diode, the
LED consists of a chip
of semiconducting
material impregnated, or
doped with impurities to
create a p-n junction.
LED Basic Components
LED chips are made of silicone
(like computer chips) then
mounted in a “package” that has
some electrical leads and
sometimes a heat sink
LED’s Are Small
Which can make
for small fixtures
Currently Most LED’s Are Directional
The LED chip is located
in a little reflective cup
that sends the light in a
direction.
Which makes them good
for applications requiring a
spot light.
Currently Most LED’s Are Directional
But not so good for applications better
suited to omni directional lamps
LED Light Distribution
Some LEDs have
diffusion lenses to
spread out the
light, or don't
have the reflective
cap.
Myth #1
LED’s Create No Heat
Light Output vs. Junction Temperature
Heat Management
Getting away
from the junction
is critical to LED
performance
The package is
then attached to a
heat sink that then
becomes a part of
either a lamp or a
luminaire.
*Life
*Lumen Output
LED fixtures need to dissipate heat differently than
incandescent fixtures.
Myth #2
LEDs last 100,000 hours
(or forever depending on who you ask!)
Myth #2
LEDs last 100,000 hours
(or forever depending on who you ask!)
Myth #3
LEDs are “White Light Sources”
Efficiency: Lumens, Watts, & Efficacy
 Lumens: total “light”
 Watts: total power
 Efficacy: how much light for the power
(lumens per watt, LPW)
(similar to miles per gallon)
_______
Watts
 Foot Candles: Light per square foot
on a surface
 Footcandles are what we measure
with a light meter
 Different tasks require different
levels of Footcandles
Color Rendering...
Color Rendering Index ( CRI )
How Natural And Normal
Do People And
Things Appear Under
Artificial Light?
CRI Scale goes from: 0 - 100,
with 100 being the best CRI
Color Rendering Index ( CRI )
The Perfect Light Source...
“The SUN”
POORER
Perfect
Color
Rendering
BETTER
100
90
80
70
60
50
40
30
20
10
0
INCANDESCENT / HALOGEN (100)
DAYLIGHT MH ( 90 )
CMH (85+)
FLUORESCENT ( 60+ to 92 )
STD. METAL HALIDE ( 65-70 )
DELUXE LUCALOX ( 65 )
COATED MERCURY ( 50 )
LUCALOX, HPS ( 22 )
CLEAR MERCURY ( 15 )
LPS ( 0 )
The Higher The Color temperature,
The “cooler” The Color
2200 o
2700 o Incandescent
Lucalox
4100 o
Fluorescent
Common Colour Temperatures
Approx Temp.
8500K
6500K
6000K
4500K
4000K
3000K
2500K
2000K
Light Source
Blue Sky
Daylight Fluorescent Lamp
Clear Mercury Lamp
Clear Metal Halide Lamp
Cool White Fluorescent Lamp
Halogen Lamp, WW Fluorescent
40 Watt Incandescent Lamp
Candle, HP Sodium Lamp
“White” LEDs
White light LEDs are
generally made by
taking a blue LED
and “doping” it with
yellow phosphors.
LEDs & Colour Temperature
Many so called
“White” LEDs
are a pale blue
colour, 50006500K.
5000K
LEDs & Colour Temperature
Sometimes LED’s are marketed in a
warm colour temperature, very often
this is fairly cool. 3500-4000K
Its just warmer the “cool”
4000K
5000K
LEDs & Colour Temperature
If what you are
expecting is an
incandescent
replacement (27003000K) then you may
be disappointed .
Currently few
LED’s are
consistently
available in that
warm a colour
temperature.
3000K
4000K
5000K
Junolightinggroup.com
• Online training e.luminance
The advantages of
LED’S
• Size
• Efficiency
• Life expectancy
• Dimmable
• Low temperatures
• Toxin free
The challenges of LED’S
• Cost
• Colour
• Directional distribution
• Performance
• Life expectancy of components
• Colour shift
• Interface with controls
• Replacement parts
The best applications of
LED’S