This is a 50.8 mm diameter Germanium Flat Window, offered by Alkor Technologies. The window, which has a thickness of 4mm, is uncoated, providing users with a straightforward, unaltered optical experience.
Germanium, the material of choice for this window, is well-known for its transparency in the infrared region of the electromagnetic spectrum, specifically at a wavelength of 10600 nanometers. This makes it an ideal choice for applications that operate within this range.
The window is designed in a flat shape, which is often preferred for its ease of integration into various systems. It is also shaped as a thin lens, suggesting that it may have some focusing capabilities, although this is not explicitly stated in the provided data.
For more information about this product, including its availability and potential applications, users are encouraged to visit the vendor's website via the provided web link.