1pc Calcium Fluoride (CaF2) Lens - High Transmittance Infrared Optical Window for Precision Systems(D40x2mm)

Exceptional broad-spectrum transmission from 0.13μm to 9.0μm, with transmittance exceeding 90% in the critical infrared range. Durable calcium fluoride material offers high humidity resistance, making it ideal for harsh environmental conditions. Low absorption and high damage threshold, perfect for free-space machine applications and high-energy machine optics. Isotropic crystal structure ensures no birefringence, suitable for applications sensitive to polarization. Commonly used in precision optical systems such as infrared lenses, spectrometers, and machine equipment; special care required due to fragility.