OPB-130C13-4-5 130 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=13 mm Uncoated

The OPB-130C13-4-5 is a high-quality optical window offered by OptoSigma, a renowned vendor in the optics industry. This window is designed for use in a wide range of optical systems, offering excellent transparency and durability.

The window features a base shape of a circle with a diameter of 130 mm, making it suitable for applications that require a large aperture. The thickness of the window is 13 mm, providing sufficient structural integrity while maintaining a low profile to minimize optical aberrations.

The material used for this window is N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is especially suitable for applications in the visible spectrum, with a peak wavelength of 588 nm. The N-BK7 Schott designation ensures a high level of consistency and quality, making it a trusted choice for many optical applications.

The window is uncoated, meaning it does not have any additional layers applied to its surface. This can be beneficial in applications where maintaining the original spectral properties of the glass is crucial. However, it's important to note that uncoated windows may have higher reflectivity compared to coated ones.