🤔️Do you know the core of the filter coating process? 🏭
👉 They included the design of the coating system (matching of refractive index/thickness) and the precision of vacuum deposition (nanometer-level control).
📈 Future trends include:
1） Double-sided coating technology: Enhances efficiency and uniformity (such as flip-chip dual-sided sputtering);
2）Composite process: Base substrate absorption + interference film (single substrate composite type), optimizes bandwidth and steepness.