Dow Inc. · NYSE:DOW
Dow — Intelligent Automotive Lighting 2018
27 slides from Dow's conference presentation, Feb 6, 2018
Slide 1: Enhanced Design Freedom and Superior Performance - Dow Optical Silicones
Enhanced Design Freedom and Superior Performance - Dow Optical Silicones Presented by Dr. Joel McDonald • Product Development Manager Contributors include François De Buyl, Jake Steinbrecher, Brad Tuft, Konstantin Sobolev Dow Performance Silicones - Lighting Intelligent Automotive Lighting 2018, Feb
Slide 2: Outline
Outline What are Silicones? • Compare to Different Optical Materials Quick Look • Dow Product Portfolio for Transportation Lighting Case Studies • Enabling Performance & Design
Slide 3: Silicones
Silicones Si + oxygen + methyl + cross linker + catalyst Polydimethylsiloxane (PDMS)
Slide 4: Silicones Versus Glass and Plastic
Silicones Versus Glass and Plastic Dow Moldable Optical Silicone Glass PC PMMA Initial Physical Form (@ 25C) Liquid Solid Solid Solid Processing Temperature (C) 15 - 25 1500 280-320 250 Molding Temperature (C) 125 - 180 600 (tin bath) 90 - 120 60 - 80 Refractive Index (n @ 633nm) 1.42 1.52 1.58 1
Slide 5: Molding and Mechanical Properties
Molding and Mechanical Properties Efficient Injection Molding Viscosity (cP) • Ease of fabrication by liquid injection molding • No secondary polishing of molded optics required Soft and Pliable, OR Firm and Tough • Impact and scratch resistant when hit or dropped • Minimal compression set high IP
Slide 6: Optical Properties and Reliability
Optical Properties and Reliability Transmittance (1 cm) Excellent Optical Clarity • Select optical grade to meet application requirements Also, High Optical Reflectivity • Diffuse and specular reflectivity Reliable in Extreme Conditions • Robust to thermal and hydrothermal aging
Slide 7: Performance and Design Impact
Performance and Design Impact • Encapsulation of LEDs for protection • Moldable Optical silicones for design freedom • Thin and flexible light guide for new illumination concepts
Slide 8: Protective Materials Over LEDs and Associated Optical Effects
Protective Materials Over LEDs and Associated Optical Effects
Slide 9: Protection and Performance
Protection and Performance Can we protect LEDs and preserve optical performance?
Slide 10: Protection Options
Protection Options 4000K Test Part with DOWSIL™ 1-2577 Low VOC Conformal Coating 4000K Test Part, No Material (Optical Simulation) 1 4000K Test Part with DOWSIL™ EI-1184 Optical Encapsulant Conformal Coating: Silicone, Acrylic, Urethane 2 • Thin layer provides little impact on light quality Encapsul
Slide 11: Optical Influence
Optical Influence 3000K Lumen output? Color temperature? 1 2 Air (n = 1.00) 3 Silicone protective material (n = 1.41 – 1.47) Silicone encapsulant (n = 1.53) 4000K Phosphor particles Reflector cup LED Chip DOWSIL™ MS-1002 Protective material can Moldable Silicone • Change Fresnel reflection DOWSIL™ E
Slide 12: Optical Influence
Optical Influence Luminous Flux (lumens) Correlated Color Temp (K) DOWSIL™ MS-1002 Moldable Silicone 3000K DOWSIL™ EI-1184 Encapsulant DOWSIL™ 1-2577 Low VOC Conformal Coating No Protection 0 50 100 150 0 5000 10000 DOWSIL™ MS-1002 Moldable Silicone 4000K DOWSIL™ EI-1184 Encapsulant DOWSIL™ 1-2577 L
Slide 13: Protective Materials
Protective Materials DOWSIL™ 1-2577 Low VOC Conformal Coating • Minimally effects Luminous Flux and CCT ― But, provides the least amount of protection above bare components DOWSIL™ EI-1184 Optical Encapsulant • Provides significant protection above bare components ― But, reduces Luminous Flux and in
Slide 14: Moldable Optical Silicones and Design Freedom
Moldable Optical Silicones and Design Freedom
Slide 15: Moldable Optical Silicones Trends and Opportunities
Moldable Optical Silicones Trends and Opportunities Specialty Applications PHILIPS Deep UV Disinfection Performance A Lighting Silicones Revolution Opportunities Incandescent Modern LED Outdoor Lighting VS Lighting ca. 1900-2000 AD ca. 2000-Today M-Class Outdoor Lighting Module • High Power, High Ef
Slide 16: Solutions Portfolio - Moldable Optical Silicones
Solutions Portfolio - Moldable Optical Silicones Diverse Properties Enable Unique Designs DOWSIL™ DOWSIL™ DOWSIL™ DOWSIL™ Property MS-1003 MS-1002 MS-4007 MS-4002 Silicone Silicone Silicone Silicone Viscosity, Part A (Pa-sec) 52 40 28 47 Designed for Many Applications Viscosity, Part B (Pa-sec) 37.5
Slide 17: Optical Properties: Average Internal Transmittance
Optical Properties Internal Transmittance Refractive Index vs. Wavelength (Average 400-700nm) Average Internal Transmittance (400-700nm, %) DOWSIL™ DOWSIL™ DOWSIL™ DOWSIL™ DOWSIL™ Property MS-1001 Silicone MS-1002 Silicone MS-1003 Silicone MS-4002Silicone MS-4007 Silicone Refractive Index (633 nm) 1
Slide 18: HELLA KGaA Hueck & Co. Adaptive Headlamps
HELLA KGaA Hueck & Co. Adaptive Headlamps Light Input Side Primary Optics Secondary Optics LSM 84 Independently Controlled LEDs Light Output Side Benefits of DOWSILTM MS-1002 Moldable Optical Silicone • Highly flexible material allows demolding with undercuts High Complexity Molding • Enables compat
Slide 19: SoundOff Signal Emergency Vehicle Light
SoundOff Signal Emergency Vehicle Light Click to play video Video courtesy of SoundOff Signal Benefits of DOWSILTM MS-1002 Moldable Optical Silicone • Fewer parts ease assembly • Small footprint with maximized candela output • Improved sealing performance to prevent water egress • Greater resistance
Slide 20: Flexible Light Guide Films
Flexible Light Guide Films New Illumination Concepts
Slide 21: Flexible Silicone Light Guide Concept
Flexible Silicone Light Guide Concept How thin? How flexible? How clear? How useful?
Slide 22: Flexible Silicone Light Guide Concept
Flexible Silicone Light Guide Concept Lost Light (Incident angle less than critical angle) Propagating Light (Total Internal Reflection) Extracted Light Thin Benefit • Smaller extraction features • Reduced design profile Thin Challenges Printed Extraction Feature • Light coupling from LED
Slide 23: FLEx Lighting Control of Light in Thin Films
FLEx Lighting In collaboration with: FLEx Lighting II, LLC. Control of Light in Thin Films Light Insertion FLEx Lighting Technology Coupling Light Guides Drive LED light into thin films and then selectively LEDs and Optic direct it as a lighting source with great efficiency and control. 0.1-0.25 mm
Slide 24: Optical Properties
Optical Properties 1cm Light Guide Silicone Clad (n = 1.41) 10cm Light Guide Silicone Core (n = 1.53) PMMA 100cm PMMA, 1 cm Light Guide Silicone Core, 1 cm PMMA, 10 cm Light Guide Silicone Core, 10 cm PMMA, 100 cm Light Guide Silicone Core, 100 cm Internal Transmission = 10-αz Balanced Transmission
Slide 25: Flexible Silicone Light Guide Demo Video
Flexible Silicone Light Guide Demo Video Flexible. Thin. Brilliant. • Optical Performance Achieved • Optical Coupling Demonstrated • Large Scale Film Production Click to play video • Prototyping Options Available
Slide 26: Summary
Summary • Creative transportation lighting concepts require new optical materials & products • New optical silicones from Dow enable performance and design freedom We look forward to innovating with you! For more information, go to consumer.dow.com/lighting
Slide 27: Thank You
Thank You ®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow © 2018 The Dow Chemical Company. All rights reserved. Form No. 11-3884 -01