LED ACADEMY>1. LED´s Basics>2. LED´s Optics>3. LED´s Thermal>
- 3.1 Introduction
- 3.2 Heat transfer introduction
- 3.3 Power conversion
- 3.4 LED performance
- 3.5 Thermal design of LED-based luminaire
- 3.6 Cooling system
- 3.7 Thermal design of passive cooling
- 4.1 Cold lumens versus hot lumens
- 4.2 Driving LEDs
- 4.3 LED connection
- 4.4 LED driver
- 4.5 LED driver additional features
- 5.1 High Efficacy
- 5.2 Controllability
- 5.3 Size
- 5.4 Directionality
- 5.5 Durability
- 5.6 Low-temperature operation
- 5.7 Instant on, frequent switching
- 5.8 No UV emissions
- 5.9 Environmental impact
- 5.10 Reliability and lifetime
- 6.1 The Right Light Application
- 6.2 Presentation and retail shop, shopping mall
- 6.3 Industry and engineering, outdoor workplaces
- 6.4 Office and communication
- 6.5 Hotel and gastro
- 6.6 Architecture, facade, city marketing and visual presentation
- 6.7 Road path and square
- 6.8 House, flat and living area
- 6.9 Emergency lighting
- 7.1 High brightness LED market
- 7.2 Lighting Efficiency Comparison
- 7.3 HB LED
- 7.4 LED luminaire cost track
- 7.5 LED retrofits versus LED luminaires
8.5 Quantum dot LED
Quantum dot (QLED) employs quantum dots in order to achieve significantly higher efficiency of device.
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| QLED displays promise better color reproduction, energy efficiency and cheaper manufacturing costs than OLED. | QLED lightplates |
| Thinness: |
It allows designers to make ultra-thin, flexible, and even transparent |
| Color Purity: |
It delivers 30 - 40% luminance (brightness) efficiency advantage |
| Energy-efficiency: |
QLEDs have potential to be more efficient than OLEDs (> 2 times) |
| Cost: |
Ability to print large-area of QLEDs on ultra-thin flexible substrates |
QLEDs Advantages:
- reliability
- energy-efficiency
- tunable colour solution for displays and lighting
- price-effective manufacture
- ultra-thin, transparent, flexible devices
QLED will be commercially available approx. in 2014.
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8.6 LED is Light Source of the Future |
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