08 / 2021 ver. 1.27 INSTALLATION GUIDE GENERAL INFORMATION ABOUT ASSEMBLING LEDIL PRODUCTSLEDiL Installation Guide LEDiL Installation Guide MATERIALS READ THE FOLLOWING INSTRUCTIONS BEFORE USING LEDIL PRODUCTS TO ENSURE RELIABLE ASSEMBLY. PMMA & PC (TRANSPARENT PLASTIC POLYMERS IN OPTICS) PMMA: PC: Rigid and hard Very tough with excellent physical properties Average chemical resistance Good chemical resistance Good UV-resistance (naturally UV-stable Good heat resistance CONTENTS technology) Average UV-resistance (LEDiL uses Good light transmission UV-stabilized clear PC-grade) 3 MATERIALS 23 INSTALLATION 3 PMMA & PC 23 Tape 3 Silicone (as a lens material) 24 Screw In general, PMMA is harder and more fragile than PC, which has greater resistance to impact and heat. LEDiL uses many different types of PC in its products and the information given here is only valid 4 Heat durability of different materials 25 Glue for Makrolon 2407. Although other types of PC offer similar properties their performance should be 6 CHEMICALS 25 Potting verified separately. 6 Glues / adhesives / potting / thread lock Press-fit 25 Transparent polymers can reflect, absorb and refract visible light. Absorption causes the temperature 7 Chemical resistance Holder 25 to increase in a lens and this should be taken into consideration during heat simulations. In general, 7 Silicone Profiles 26 PMMA lenses have higher light transmission rates meaning less light is absorbed. PC on the other 7 PMMA PCB design 27 hand has better heat resistance, but thicker parts can absorb more light resulting in increased internal 8 PC LED assembly 27 temperatures. LEDiL uses UV-stabilized clear PC for optics and all materials are f1-rated (UL746C- standard is suitable for outdoor applications and meets UV and water exposure demands). 15 STRESS CRACKING LED chip positions 28 16 UV-RESISTANCE LED compatibility tolerances 2 16 SILICONE (AS A LENS MATERIAL) Plexiglas guarantee Distance between lenses 28 16 Silicone Sealing and ingress protection of LEDiL optics 29 Silicone has excellent optical properties, great Silicone: 16 PC THERMAL MANAGEMENT 30 impact strength, durability and high thermal Excellent optical properties with even 17 FIRE RATING Heat sink machining 31 stability. Silicones elasticity allows complex better efcfi iency than glass 17 Fire ratings Thermal interface materials 31 optical and functional forms and low viscosity Elasticity allows complex optical and 18 Hot Wire Ignition (HWI) Thermal measurements 32 makes microstructural design possible. Silicone functional forms has high stability in ultraviolet light and ozone 18 High Amp Arc Ignition (HAI) High thermal and UV stability METAL COATING 33 and can be used with UV LEDs where even UV Great impact strength 18 Outdoor suitability Vacuum Evaporation PVD 34 stabilized plastics are unsuitable. Lightweight design (lighter than glass) 19 LEDiL materials fire rating HMDS 34 20 TENSILE STRENGTH STORAGE 35 As part of our continuous research and improvement processes LEDiL reserves the right of changing material grades 21 TOLERANCES LINKS TO USEFUL INFORMATION 35 without further notice to ensure best possible quality and availability of our products. The information contained herein is the property of LEDiL Oy, Joensuunkatu 13, FI-24100 SALO, Finland and is subject to change without notice. Please visit The information contained herein is the property of LEDiL Oy, Joensuunkatu 13, FI-24100 SALO, Finland and is subject to change without notice. Please visit 2 3 www.ledil.com for additional information, such as the latest photometric files, 3D mechanical models, and application notes relating to handling, gluing and taping. www.ledil.com for additional information, such as the latest photometric files, 3D mechanical models, and application notes relating to handling, gluing and taping.