Modules & Sub Modules
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Training Days
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M1: LED device and technology
- Semiconductor materials
- Band-gap energy
- MOCVD Process
- Device structure
- Epitaxial fabrication
- Wafer fabrication
- Electrical and Photometric Characteristics
- Device efficiency
- Light extraction techniques
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3 days
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M2: LED Color Science / Illumination
Engineering
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Candela, lumen, nits, lux etc
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Dominant wavelength
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(x,y) coordinates
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(x,y), (u,v) etc
- Color Rendering Index
- Color Mixing Theory
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Understanding Tristimulus values
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Mixing two colors
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Mixing three or more colors
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2 days
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M3: LED Packaging – Design and Material
Selection
- LED Construction
- Substrates – Leadframe, PCBs, et c
- Die types
- Encapsulants – Epoxy, Silicones, etc
- Interconnects
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Gold Wire
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Die-attach
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Eutetics
- Through Hole LEDs
- Surface Mount LEDs
- High Power LEDs
- Stress and Strain Analysis
- Design Software
- Reliability
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2 days
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M4: LED Applications
- Indicators
- Displays
- Backlighting
- Full Color Video Screen
- Solid State Lighting/Illumination
- LED Drivers – Design and Technologies
- Thermal Management Considerations
- Regulations and Standards for LED lamps and luminaire
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US Energy Star
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UL
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Ingress Protection (IP)
Rating
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LM-78, 79 and 80.
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2 days
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M5: LED Manufacturing Processes
- LED piece-parts
- Processes for SMT, TH, and Power LEDs
- Die-Attach
- Wire-bond
- Encapsulation
- Singulation
- Photomteric Tests
- Reliability Tests
- Tape and Reel
- Shipping Tubes
- ESD Precautions
- Moisture Sensitivity Levels
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3 days
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M6: LED Optics, Design and Applications
- Behaviour of Light
- Reflection, Diffused and Specular
- Refraction – Snell’s Law
- Diffraction
- Diffusion
- Collimation
- Filters and Filtering
- Transmissivity of materials
- Total Internal Reflection in LEDs
- Optical Lenses
- Radiation pattern of LEDs
- Near Field and Far Field patterns
- Street lamp beam patterns
- LCD Backlighting lighting
- Camera Flash Optics
- Optical materials and properties
- Factors affecting degradation of optical materials
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3 days
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