FLIERMOUSE Near-Infrared (NIR) Transmissive PMMA: Material Properties and Applications

1. Fundamental Properties

• Chemical Basis 

FLIERMOUSE engineers enhance conventional PMMA (92% light transmittance, density 1.19g/cm³) through molecular structure modification or additive optimization, achieving 94% transmittance in the 700-1650nm NIR band while maintaining high hardness (pencil hardness: 2H-6H) and thermal stability (HDT: 120°C.  This innovative material is ideal for applications such as infrared sensing, facial recognition, optical inspection, and more.

• Key Modifications

Selective Light Transmission: Special formulations or polymer branch adjustments enable visible light blocking(black appearance) with high NIR transparency.  

Customizable Wavelengths: Supports tailored transmittance for sub-bands (e.g., 850-1650nm, 905-1650nm) to match various infrared LED wavelengths.  

2. Performance Advantages

• Optical Performance  

NIR Transmittance: 94% (780-1650nm), outperforming standard PMMA (limited to IR <2800nm).  

UV Blocking: Blocks UV below 300nm; optional coating enhances shielding for 300-400nm UV.  

• Mechanical & Thermal Properties

High Hardness: Scratch-resistant with 2H-6H pencil hardness.  

Enhanced Heat Resistance: HDT of 120°C vs. standard PMMA (95-105°C).  

Lightweight: Density is 43% of glass, ideal for weight-sensitive applications.  

• Environmental Stability

Resistant to acids, alkalis, and organic solvents (avoid ketones/ethers).  

Flammable (ignition point: 458°C), requiring flame-retardant treatment.  

3. Core Applications

• Smart Sensing & Optical Systems

ADAS/Autonomous Vehicles: LiDAR covers, IR camera lenses (compatible with 905nm/1550nm lasers, 850nm IR).  

Biometrics: IR windows for finger vein/iris recognition.  

Security: Night-vision camera filters (NIR-transmissive, visible light-blocking).  

• Industrial & Consumer Electronics 

IR Touchscreens: Enable touch functionality while hiding sensors.  

Remote Controls: Black housings transmitting IR signals (e.g., TV remotes).  

• Specialized Scenarios

Hunting Cameras: Covert nighttime imaging.  

Medical Devices: Optical components for NIR detection instruments.  

4. FLIERMOUSE NIR PMMA vs. Conventional PMMA  

| Property               | Conventional PMMA          | FLIERMOUSE NIR PMMA           |  

|————————|—————————-|——————————–|  

| Transmittance Band      | Visible light (92%), partial UV/IR | NIR (94%, customizable 700-1650nm) |  

| Appearance               | Transparent                | Black (blocks visible light)  |  

| HDT                      | 95-105°C                     | 120°C                          |  

| Primary Use Cases       | Displays, lighting, décor  | IR sensing, optical recognition, autonomous systems |  

5. Key Considerations

Optical Design: Match NIR PMMA type to IR LED wavelength (e.g., 905nm LEDs → 850-1650nm variant).  

NIR Wavelength Range (nm)	Highlights
700–1650 (NIR PMMA M95-1073J)	Broad-spectrum transmission,for 800nm or 850nm LED
780–1650 (NIR PMMA M95-1080)	High transparency up to 94%,for 850nm LED
850–1650 (NIR PMMA M95-1083)	Compatible with various IR LEDs,for 905nm LED
905–1650 (NIR PMMA M95-1090)	Optimized for safety and remote control,for 940nm LED
1100–1650 (NIR PMMA M95-1600)	Ideal for NIR imaging and sensing,for 1550nm or 1650nm LED

Conclusion

FLIERMOUSE’s NIR PMMA M95, with precise wavelength control and optimized performance, is an ideal material for advanced infrared optical systems. Its black appearance ensures stealth, while 94% NIR transmittance supports cutting-edge applications in autonomous driving, biometrics, and covert surveillance. Customizable properties further unlock potential in next-gen technologies, positioning it as a cornerstone of the NIR-enabled engineering era.