11-426 25.4mm Dia. x 75mm FL; Coated; ZnSe Plano-Convex Lens BBAR 3-12µm

The 11-426 is a Plano-Convex Spherical Lens, a type of spherical lens characterized by having one side flat and the other side curved. This lens, sourced from Edmund Optics, boasts a diameter of 25.4mm and a focal length of 75mm, making it suitable for a wide range of optical applications.

The lens is crafted from ZnSe (Zinc Selenide), a material with a high refractive index and excellent transmission properties in the infrared spectrum, specifically between 3µm and 12µm. This makes the 11-426 an ideal choice for applications that require the transmission of light in this spectral range.

The lens features a Broadband Anti-Reflection (BBAR) coating on both the front and back surfaces. This coating is designed to reduce surface reflections and increase transmission, thereby enhancing the overall performance of the lens. The BBAR coating is optimized for the 3-12µm wavelength range, further complementing the lens's infrared transmission capabilities.

The geometry of the lens includes a thickness of 1.73mm at the edge and 2.5mm at the center. The inner radius is 0mm, and the outer radius is also 0mm, indicating a plano surface on the incident side.