49-625 25.0 x 25.0 mm N-BK7 Precision Protective Flat Window; t=4 mm MgF2 400-700nm

The 49-625 is a 25.0 x 25.0 mm N-BK7 Precision Protective Flat Window, featuring a thickness of 4 mm and coated with MgF2 for the wavelength range of 400-700nm. This window is sourced from Edmund Optics, a renowned vendor in the optical industry.

The window is designed in a rectangular shape, with a width and length of 25.0 mm each, providing a substantial surface area for protection. The thickness of 4 mm ensures durability and rigidity, making it suitable for various applications.

The window is made of N-BK7, a popular glass type in the optical industry due to its excellent optical properties. This material is known for its low dispersion and high Abbe number, making it an ideal choice for applications that require high image quality and minimal chromatic aberration.

The window is coated with MgF2 on both the front and back surfaces. This coating is standard and provides a wide range of benefits, including improved transmission, reduced reflection, and increased durability. The coating is designed for a wavelength of 587.6 nm, which is the peak of the visible light spectrum.

The window is shaped as a thin lens, which is a type of lens with a very small focal length compared to its diameter. This shape allows for minimal distortion and high image quality, making it suitable for various applications, including imaging systems, beam delivery systems, and optical instruments.