The 66-185 is a 10 mm diameter uncoated ultra-thin protective flat window, designed and manufactured by Edmund Optics. This window is made from N-BK7, a popular borosilicate glass known for its excellent optical properties, including a high refractive index and low dispersion. The window's thin form factor, with a thickness of just 0.2 mm, makes it an ideal choice for applications where space is at a premium.
The window's circular base shape and flat geometry contribute to its wide range of applications, particularly in systems where a clear, unaltered view of the target is required. The window's uncoated surface ensures minimal reflection and dispersion, making it suitable for use in high-precision optical systems.
The 66-185 window is currently in stock, according to the vendor's website, and more information about this product can be found at https://www.edmundoptics.com/p/10mm-diameter-uncoated-ultra-thin-n-bk7-window/20701/.