G390043000 31.5 mm Dia. N-BK7 Optical Flat Window; t=3mm Uncoated

The G390043000 is a 31.5 mm diameter N-BK7 optical flat window with a thickness of 3mm, sourced from the renowned optical components manufacturer, Qioptiq Photonics. This window is a type of flat window, designed for use in various optical systems where a clear, undistorted view is required.

The window is made from N-BK7, a popular glass type known for its excellent optical properties. This material, also known as Schott BK7, is a borosilicate crown glass with a refractive index of approximately 1.5168 at 633nm, making it an ideal choice for a wide range of optical applications.

The window features a base shape of a circle, a common geometry in optical systems due to its symmetry and ease of alignment. The thin lens shape of the window further enhances its functionality, making it suitable for use in applications where a flat window is required but space is limited.

Notably, this window is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. While this may result in higher reflective losses compared to coated windows, it also means that the window can be used in a wider range of wavelengths without the risk of coating damage or degradation.

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