39-546 12.7mm Dia. x 50.8mm FL; Coated; ZnSe Plano-Convex Lens BBAR 8-12µm

The 39-546 is a high-quality Plano-Convex lens, sourced from Edmund Optics, offering a 12.7mm diameter and a focal length of 50.8mm. This lens is specifically designed for use with infrared wavelengths, between 8-12µm, making it an ideal choice for a range of applications within this spectrum.

The lens is fabricated from ZnSe (Zinc Selenide), a material well-known for its excellent transmission properties in the infrared region. The ZnSe material also offers high damage threshold and chemical resistance, contributing to the lens' durability and longevity.

The lens features a BBAR (Broadband Anti-Reflection) coating on both the front and back surfaces. This coating significantly reduces surface reflections, thereby enhancing the overall transmission of the lens. The BBAR coating is specifically designed for the 8-12µm wavelength range, ensuring optimal performance in the intended application.

The geometry of the lens includes a thickness of 1.72mm at the edge and 2mm at the center. The lens's inner and outer radii are 0, indicating a plano-convex shape. This shape is often chosen for its ability to minimize spherical aberration, thereby improving the quality of the image formed.