TFAN-20C05-4 20 mm Dia. N-BK7 Flat Aluminum Mirror λ/4; t=5mm

OptoSigma offers the TFAN-20C05-4, a 20 mm diameter N-BK7 flat aluminum mirror with a λ/4 coating and a thickness of 5mm. This high-quality mirror is designed for various optical applications, boasting a superior reflective surface and robust construction.

The mirror's circular geometry, with a 20 mm diameter, ensures a wide field of view, making it suitable for use in imaging systems, beam expanders, and other optical devices. The 5mm thickness provides sufficient rigidity and stability, reducing the risk of deformation or damage during handling and operation.

The mirror's N-BK7 substrate, sourced from Schott, is a well-known borosilicate glass with excellent optical properties. It offers low auto-fluorescence, high homogeneity, and low thermal expansion, making it an ideal choice for precision optical systems.

The TFAN-20C05-4 features a front-side aluminum coating with a protected gold overlay (TFAN AL AOI 45). This coating provides high reflectivity in the visible spectrum and excellent durability, ensuring reliable performance and longevity. The protected gold overlay enhances the mirror's resistance to oxidation and tarnishing, further increasing its lifespan and reliability.