36-935 75 mm Dia. UVFS Round Protective Flat Window; t=3 mm Uncoated

The 36-935 is a 75 mm diameter circular flat window, designed to provide reliable protection for optical systems while maintaining high transmission levels. Sourced from Edmund Optics, this window features a thickness of 3 mm and is made from UVFS material with the Mal-1965 material ID.

UVFS, or UltraViolet Fused Silica, is a high-purity silica glass with excellent optical properties. It is characterized by a low coefficient of thermal expansion, making it highly resistant to thermal shock. Additionally, it exhibits low optical absorption and high transmittance across a wide spectrum, from the ultraviolet to the infrared regions, including the visible light spectrum around 587.6 nm.

The window is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in applications where maintaining the original spectral characteristics of the light passing through the window is crucial. However, it may be more susceptible to environmental factors such as dirt, dust, or moisture, which could potentially affect its performance.

The 36-935 window is classified as a flat window, indicating that its surfaces are parallel and its optical power is negligible. This makes it ideal for applications where minimal distortion and high transmittance are required, such as in beam delivery systems, laser applications, or imaging systems.