Innovation and Precision www.arburg.com Injection Compression Molding of Head-up Display mirror with ARBURG
Index Head-up displays in automobiles Types and functionality of head-up displays Mirrors as optical part in the head-up display Production of HUD-mirrors with ARBURG injection molding machines Outlook Head-up displays in automobiles - function Projection of all relevant information directly into the view of the driver No focusing of the eye during driving Increase of driving safety, reduce of accident risk Linking with modern car assistant systems possible Examples: Continental Automotive GmbH 2
Head-up displays in automobiles - requirements requirements for visualization sharp and free of visual defects straight image (on curved windshield) no distortion static und dynamic aspect Inclination waviness mismatching between left and right eye Types and functionality of head-up displays - comparison Combiner HUD Windshield HUD Small volume, useable even for small cars Useful for different types of cars without individual matching Attractive ti price Large image Projection distance at optimum Better image quality High quality product No interference in view to the road Continental Automotive GmbH 3
Types and functionality of head-up displays - function Mirrors as optical part in the head-up display - function Combiner HUD Basic Windshield HUD function of a HUD mirror reflection magnification compensation of curved windshield adjustment High Class Windshield HUD Continental Automotive GmbH 4
Mirrors as optical part in the head-up display requirements to the plastic part high level of surface quality and reflection coatable High dimensional stability good adhesion of coating high temperature stability high purity high stiffness and low vibration Mirrors as optical part in the head-up display requirements to the process stable free of environmental influence controllable in small steps precise Free of contamination low demolding forces repeatable confirmed capability due to automotive standards processable Continental Automotive GmbH 5
Production of HUD mirrors with ARBURG machines Injection compression molding (schematic) Injection molding Injection compression molding cavity Clamping force holding pressure Compression force holding pressure Production of HUD mirrors with ARBURG machines Advantages of injection compression molding very accurate reproduction of surface details high degree of freedom due to many different compression modes and controls constant load balancing over whole part surface low inner stress inside part resulting in low distortion gate cutting inside tool possible method hydraulic compression molding electric compression molding positioning accurance +/- 0,1mm +/- 0,001mm repeatability + /- 50µm + /- 10µm Continental Automotive GmbH 6
Production of HUD mirrors with ARBURG machines machine and environment use of ARBURG machines of the following types ALLROUNDER 720 A ALLROUNDER 920 A customized for the special requirements of mirror production close cooperation between ARBURG and Continental Production of HUD mirrors with ARBURG machines machine and environment complete automatization concept for part handling Injection molding machine and robot cell inside clean room class ISO 7 stable environment 100% process control und traceability Tool building in inhouse tool shop Continental Automotive GmbH 7
Production of HUD mirrors with ARBURG machines process control Dishing Stretching Mirror at CAD 0 Distorsion Stretched edges The composition of all these factors ensures the degree of precision which is necessary for the product. Outlook Augmented Reality HUD Navigation Lane Departure Warning Adaptive Cruise Control Overlap of real driving situation with virtual information Continuous visualization of vehicle behavior with real-time feedback Important requirement for autonomous driving Continental Automotive GmbH 8
Outlook requirements for future mirrors generations AR HUD AR-HUD / High-Class DMD Windshield HUD larger Current mirrors cheaper High Class Windshield HUD commodity product Thank you for your attention! Further Information: http://www.continental-head-up-display.com Continental Automotive GmbH 9