The base substrate of PMMA infrared filter sheet is PMMA resin, which is compositely modified by adding nano-scale infrared transmission factors and functional additives. Compared with ordinary PMMA materials, it features special optical filtering performance. Haiyue PMMA infrared filter sheet adopts medical-grade PMMA as the base material modified with compound functional additives, balancing outstanding optical performance and long-term reliability.

  The working principle of PMMA infrared filter sheet relies on nano-modification technology: functional particles transparent to near-infrared bands are incorporated into the PMMA substrate to absorb and block visible light ranging from 400nm to 700nm, allowing only targeted near-infrared light to pass through and blocking stray light. When mixed light consisting of visible light and infrared radiation hits the filter sheet, visible rays are absorbed and blocked by light-absorbing components inside the substrate, while targeted infrared light transmits smoothly. This delivers pure infrared signals to rear-end infrared sensors and eliminates interference from stray ambient light. Widely deployed across various infrared sensing applications, its key application sectors cover security surveillance (night vision filtering for cameras), automotive electronics (DMS driver monitoring, infrared gesture recognition, automotive night vision), smart home devices (induction windows for smart locks, automatic sensing equipment), medical instruments (infrared thermometers, optical windows for oximetry), industrial sensing (AGV obstacle avoidance, machine vision), military research and more.

The product boasts surface hardness of 3H-4H and stable operation within -40℃~120℃. After 1000-hour xenon lamp aging test, the attenuation rate of infrared transmittance is less than 2%, complying with automotive-grade and medical-grade reliability standards. Full-customization service is available covering substrate formulation, wavelength adjustment, surface color and processing technology to fulfill customized demands from consumer-grade, automotive-grade to military-grade applications. The products have been supplied to global leading enterprises including Ford, Hikvision, TCL and BYD in their supply chains.

In the current PMMA infrared filter market, products from different manufacturers vary in market positioning. If you are searching for a versatile, fully customizable and quick-response PMMA infrared filter solution, feel free to contact Haiyue for tailored proposals and full-process technical support.