NIR (Near-Infrared) Polarizing Film

Easy-to-handle polymer NIR polarizer film for the 800–1000 nm range.

Unlike delicate wire-grid polarizers that require careful handling during cutting or cleaning, this film offers the same ease of use as standard polarizer films. Ideal for internal inspection of opaque resins, biometric authentication, medical and diagnostic devices, food inspection, and machine vision applications. ■ Applications:Biometric Authentication / Medical Devices / Sensors / Cameras / LiDAR / Others

Driver Monitoring & Eye-Gaze Detection		Vein Recognition Systems
Using an IR polarizer removes lens reflections for clear iris recognition and reduces light-source noise for accurate gaze detection.		It blocks backlight and glare from the light source, allowing veins to be seen clearly. Suitable for vein recognition and potential medical applications.

Price

Without adhesive		With adhesive

Coating Type	Characteristics of the Coating Type	Data Sheet
Low-Reflection <LR>	✔ Equipped with a low-reflection (anti-glare) function 　✔ Higher light transmittance than HC type (better performance) 　✔ Stain-resistant surface (may reduce adhesion in some cases)
Hard-Coat <HC>	✔ Equipped with a scratch-resistant function 　✔ Slightly lower light transmittance compared to the LR type 　✔ Can be bonded to the HC surface using adhesive or PSA

Features (Comparison Between Wire-Grid Type and MIR35 Series)

Coating Type	MIR Series	Wire-Grid Type
Stray Reflection / Scattering	Does not occur	Occurs
Handling	Same as general film (no special handling required)	Cannot be rubbed or contacted
Cutting Workability	Same as general film (no special handling required)	May Requires special cutting
Durability	High durability under severe conditions	Concerns under high-temperature/high-humidity, heat resistance, and moisture resistance

Durability
● Absorptive-type polarizer ● Handled like standard polarizers ● High durability	✔ No stray reflection or scattering occurs ✔ Surface contact and wiping allowed ✔ Excellent heat and humidity resistance

Test	Conditions	Judgment Criteria
High-temperature durability	105 °C × 500 h	After testing, the single transmittance  at 870 nm ( (Tpol-p + Tpol-c) / 2 )  shall remain within ±5 points of the  initial value.  After testing, the degree of  polarization at 870 nm shall remain  within −3 points from the initial value.  No peeling or cracks caused by  thermal shock, and no abnormal  visual appearance.
Heat-and-humidity durability	60 °C × 90% RH × 1000 h
Low-temperature durability	- 40 °C × 1000 h
Thermal shock	−40 °C × 0.5 h ⇔ + 85 °C × 0.5 h 200 cycles

Applications

Application	Wavelength	Effect / Usage
Automotive cameras	Near-infrared (600–1,050 nm)	Anti-reflection
Surveillance cameras	Near-infrared (600–1,050 nm)	Anti-reflection
Biometric authentication (vein / iris, etc.)	Near-infrared (600–1,050 nm)	Anti-reflection
Semiconductor inspection systems	Near-infrared (600–1,050 nm)	Anti-reflection
Industrial inspection cameras	Near-infrared (600–1,050 nm)	Anti-reflection
Fundus / ophthalmic imaging devices	Near-infrared (600–1,050 nm)	Anti-reflection
Sorting machines (e.g., fruit sorting)	Near-infrared (600–1,050 nm)	Anti-reflection

Applications  ✔ Biometric         authentication  ✔ Medical devices  ✔ Sensors  ✔ Cameras  ✔ LiDAR, etc.

Spectral Characteristics / Degree of Polarization

	800nm	850nm	900nm	950nm
Parallel Transmittance (%)	75.37	72.97	72.67	74.57
Crossed Transmittance (%)	0.103	0.017	0.028	0.059
Degree of Polarization (%)	99.73	99.95	99.92	99.84