45-661 25 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm VIS-NIR 400-1000nm

The 45-661 is a 25 mm diameter, 4 mm thick Flat Window made from N-BK7 Schott glass, sourced from the reputable vendor Edmund Optics. This window is designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to wavelengths between 400 and 1000 nanometers.

The window features a precision protective coating on both the front and back surfaces, identified as 'edm visnir0sp2002000'. This coating is engineered to enhance the window's durability and performance within its specified wavelength range. The window's geometry, with a diameter of 25 mm and a thickness of 4 mm, is designed in a Thin Lens shape, optimizing its optical characteristics.

The window's material, N-BK7 Schott, is a high-quality borosilicate crown glass, known for its excellent optical properties, including low dispersion and high homogeneity. This makes the 45-661 an ideal choice for applications requiring high-precision optical components.

The window's 'VIS-NIR 400-1000nm' classification indicates its suitability for use in a wide range of applications, from visible light imaging to near-infrared spectroscopy. The window's protective coating further enhances its durability, making it suitable for use in challenging environments.