45-817 50.8 mm Dia. Sapphire Protective Flat Window; t=3.18 mm Uncoated

The 45-817 is a circular, flat window with a diameter of 50.8 mm and a thickness of 3.18 mm, making it a robust and durable option for various applications. This window is sourced from Edmund Optics, a reputable vendor known for its high-quality optical components.

Crafted from aluminum oxide (al2o3), this window boasts excellent optical properties. Aluminum oxide, also known as sapphire, is a highly transmissive material, particularly in the visible spectrum. With a wavelength of 587.6 nm, this window is ideal for applications that require high light transmission in this region.

The window is uncoated, which means it does not have any additional layers to enhance or alter its optical properties. This can be advantageous in certain applications where maintaining the natural properties of the material is crucial. However, it's important to note that uncoated surfaces can be more susceptible to environmental factors such as dust, moisture, and scratches.

This window is classified as a thin lens due to its minimal thickness relative to its diameter. This characteristic can be beneficial in applications where weight and space are critical factors. Despite its thinness, the window's 3.18 mm thickness provides sufficient rigidity and strength to withstand typical handling and usage.