45-309 12.5 mm Dia. UVFS Round Protective Flat Window; t=2 mm Uncoated

The 45-309 is a 12.5 mm diameter Uncoated UVFS Round Protective Flat Window, designed and manufactured by Edmund Optics. This window is a type of flat window, characterized by its base shape being circular, ensuring a uniform and consistent optical path.

The window's geometry is defined by its diameter and thickness. The diameter measures 12.5 mm, providing a substantial aperture for a wide range of optical applications. The thickness of the window is 2 mm, offering excellent mechanical strength and rigidity.

The material of the window is UVFS (UV Fused Silica), identified as UVFS Mal- 1965 in the item data. This material is known for its excellent optical properties, including high transmittance across a broad spectrum, making it suitable for various applications, especially those involving ultraviolet light.

The window is designed to operate at a wavelength of 587.6 nm, which is the dominant wavelength of the visible spectrum, often referred to as the 'yellow' wavelength. This specific design ensures optimal performance in applications where this wavelength is of interest.

The window is shaped as a thin lens, indicating its minimal curvature, which contributes to its excellent light transmission properties. The window is uncoated, meaning it does not have any additional layers applied to enhance its optical properties or protect it from environmental factors.