OPB-25C03-4-5 25 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=3 mm Uncoated

The OPB-25C03-4-5 is a circular optical flat window, boasting a 25 mm diameter and a thickness of 3 mm, sourced from the reputable vendor OptoSigma. This window is crafted from N-BK7, a high-quality borosilicate glass known for its excellent optical properties, including low autofluorescence and a wide transmission range, making it an ideal choice for various optical applications.

The window's N-BK7 material has a refractive index of approximately 1.5168 at the wavelength of 588 nm, contributing to its superior optical performance. The window's flat shape and thin lens design ensure minimal optical aberrations, providing clear and accurate optical transmission.

Notably, this window is uncoated, offering users the flexibility to apply coatings based on their specific requirements. However, the uncoated version still provides reliable performance in many applications, thanks to the inherent properties of the N-BK7 material.

The OPB-25C03-4-5 is currently in stock and available for immediate purchase through the OptoSigma website, as indicated by its valid weblink status. This window is a versatile and high-quality option for those seeking a reliable optical component for their projects.