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The rapid advancement of Internet of Things (IoT) technologies and autonomous driving systems has increased the demand for highly reliable sensing and communication devices. Among the various sensing technologies used in advanced driver-assistance systems and autonomous vehicles, Light Detection and Ranging (LiDAR) has emerged as a critical component due to its ability to accurately detect the position, distance, and movement of objects under a wide range of environmental conditions, including nighttime operation. As LiDAR systems continue to evolve toward higher sensitivity, greater integration, and lower cost, the performance requirements for their optical components, particularly sensor covers and optical filters, have become increasingly demanding. These components must provide high near-infrared transmittance, visible-light blocking capability, impact resistance, scratch resistance, heat resistance, and long-term durability while supporting compact and lightweight system designs. To address these challenges, Toagosei developed the ARONIX® Sheet NIR Series, an integrated cover and filter material designed for infrared sensing applications. This paper examines the material characteristics, optical performance, durability, and processing capabilities of the ARONIX Sheet NIR Series, highlighting its potential to improve the efficiency, reliability, and miniaturization of next-generation LiDAR and infrared sensor systems.