210-0403M 40.0 mm Dia. N-BK7 Flat Round Window; t=3 mm Uncoated

The 210-0403M is a Flat Round Window, a type of optical component designed for use in various applications. This particular model boasts a diameter of 40.0 mm and a thickness of 3 mm, making it a substantial yet manageable size for most applications.

The window is made from N-BK7, a popular material in the optical industry due to its excellent optical properties. N-BK7, also known as Schott glass, is a borosilicate crown glass that offers low dispersion and high transmission in the visible and near-infrared spectral ranges. This makes it an ideal choice for applications that require high-quality imaging or laser transmission.

The window is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in certain applications where the natural properties of the glass are desired, or where additional coatings may interfere with the system's operation. However, it's important to note that uncoated windows may be more susceptible to environmental factors such as dirt, dust, or moisture, which can affect their performance over time.

This window is sourced from EKSMA Optics, a reputable vendor in the optical industry. According to the vendor, the window is currently in stock and available for immediate purchase, as indicated by the "weblink status" field in the item data.

For more information about this window, including pricing and availability, please refer to the vendor's website linked in the item data.