47-521 30 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm VIS 0 425-675nm

The 47-521 is a 30 mm diameter, 4 mm thick Flat Window made from N-BK7 glass, sourced from the renowned optical vendor, Edmund Optics. This protective window is specifically designed for the visible spectrum, with a wavelength of 587.6 nm, and is coated with the EDM VIS-0 standard curve on both the front and back surfaces.

The N-BK7 glass, also known as BK7, is a popular choice in the optical industry due to its excellent optical properties, including low dispersion and high transmission in the visible spectrum. The 4 mm thickness of the window provides sufficient protection while maintaining a relatively lightweight design.

The window features a circular base shape, with a diameter of 30 mm, making it compatible with a wide range of optical systems. The thin lens shape of the window ensures minimal distortion and maintains the integrity of the light path.

The EDM VIS-0 standard curve coating on both surfaces of the window provides excellent anti-reflection properties, reducing unwanted reflections and increasing transmission. This coating is specifically designed for the visible spectrum, ensuring optimal performance in this range.

According to the vendor's website, this item is currently in stock, making it readily available for immediate use. The item data also provides a weblink for further information and purchasing options.