WZN4203 42 mm Dia. Zinc Selenide Standard Round Window; t=3mm Uncoated

The WZN4203 is a 42 mm diameter Zinc Selenide (ZnSe) flat window with a thickness of 3mm, sourced from Knight Optical. This window is a standard round shape, designed with a thin lens shape, making it an ideal choice for various optical applications.

Zinc Selenide is a popular material in optical systems due to its excellent transmission properties in the infrared region, specifically between 5000 to 18000 nanometers. The WZN4203, in particular, is designed for a wavelength of 10600 nanometers, making it suitable for mid-infrared applications.

The window is uncoated, offering users the advantage of raw material properties without any additional coating interference. However, users should note that uncoated windows may have higher reflectivity compared to coated ones. Despite this, the uncoated ZnSe window still provides good transmission and is less susceptible to damage from environmental factors.

The WZN4203 is currently in stock and available for immediate purchase from Knight Optical's website. With its reliable specifications and high-quality construction, this window is a valuable addition to any optical system requiring a mid-infrared transparent window.