68-495 40 mm Dia. Zinc Selenide Protective Flat Window; t=4 mm Uncoated

The 68-495 is a 40 mm diameter Zinc Selenide (ZnSe) protective flat window, with a thickness of 4 mm and no coating. This window is sourced from Edmund Optics, a reputable vendor in the optical industry.

As a window, this component is designed to protect optical surfaces from damage while allowing light to pass through. The 68-495, specifically, is a flat window, which means it has a planar, non-curved surface. This design is ideal for applications that require minimal optical distortion.

The window is made of Zinc Selenide, a material with a wide transparency range, spanning from the ultraviolet to the mid-infrared region. This makes the 68-495 suitable for use in a variety of applications, including those that require transmission in specific wavelengths. In this case, the window is optimized for a wavelength of 587.6 nm.

The window has a shape described as "Thin Lens", which suggests that it has been fabricated with precision to ensure minimal optical aberrations. However, it's important to note that the window does not have any coating. Coatings are often applied to optical surfaces to enhance their performance, such as by increasing their reflectivity or transmissivity. The absence of a coating in the 68-495 could affect its performance in certain applications, but it also means that the window is less susceptible to damage from environmental factors.

The window is in stock, according to the vendor's website, making it readily available for immediate use.