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Infrared lens
Technical Specifications
Outer Diameter: 4 - 200 mm
Diameter Tolerance: ≥ ±0.005 mm
Center Thickness Tolerance: ≥ ±0.01 mm
Spherical Surface - Newton's Rings (N): ≥ ±1
Spherical Surface - Irregularity (ΔN): ≥ 0.3
Aspheric Surface - Figure Error (PV): ≥ 0.2 μm
Aspheric Surface - RMS: ≥ 0.05 μm
Aspheric Surface Relative Decentration: Shift ≥ 3 μm, Tilt ≥ 30 arcsec
Transmission Decentration: ≥ 30 arcsec
Reflection Decentration: ≥ 30 arcsec
Surface Quality: 40-20 (per MIL-PRF-13830B)
Material: Chalcogenide glass, Germanium (Ge), Silicon (Si), and other infrared materials
Coating Specifications (Working Wavelength: 8 - 14 μm)
AR Coating (Anti-Reflection): Effectively reduces stray light for superior imaging performance. Primarily used in automotive, surveillance, and temperature measurement applications.
HD Coating (Hard-Durable): Offers better abrasion resistance and higher hardness compared to standard AR coating, while maintaining the same optical performance. Applications are identical to AR coating.
DLC Coating (Diamond-Like Carbon): Specifically designed for Ge and Si substrates. Features exceptional abrasion resistance and high hardness, ensuring reliable imaging quality in harsh operating environments. Mainly used for high-end surveillance lenses and automotive lenses.