WBMA-25.4C03-10-550 25 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 400-700nm

The WBMA-25.4C03-10-550 is a high-quality optical window, manufactured by OptoSigma, a leading vendor in the optical industry. This particular model is a Flat Window, designed with a circular base shape and a diameter of 25 mm, making it suitable for a wide range of optical applications.

The window boasts a thickness of 3 mm, providing excellent durability and stability. It is made from N-BK7, a popular material in the optical industry due to its excellent optical properties and high damage threshold. This material, also known as Schott glass, ensures high-quality performance across various wavelengths.

The WBMA-25.4C03-10-550 is coated with an anti-reflection (AR) coating on both the front and back surfaces. This coating, denoted as 'opt m', is designed to minimize reflection and increase transmission in the spectral range of 400-700 nm. This feature is particularly beneficial for applications that require high light transmission, such as imaging systems, beam delivery systems, and laser applications.

The window is shaped as a Thin Lens, which can be advantageous in certain optical configurations. The 'Thin Lens' shape implies that the window is thin enough relative to its diameter that it can be approximated as a lens with zero thickness in many optical calculations.