OPB-130C18-4-5 130 mm Dia. N-BK7 Round Optical Parallel Flat Window; t=18 mm Uncoated

The OPB-130C18-4-5 is a high-quality optical window offered by OptoSigma, a renowned vendor in the optical industry. This component, designed for use in various optical systems, boasts a 130 mm diameter and a thickness of 18 mm, making it a robust and stable option for a wide range of applications.

The window is made from N-BK7, a popular glass type known for its excellent optical properties. Schott, a leading glass manufacturer, produces this material, ensuring a high level of quality and reliability. The N-BK7 glass is particularly suitable for applications that require high homogeneity and low auto-fluorescence.

The window is designed in a flat configuration, which is ideal for applications that require minimal optical distortion. This makes it suitable for use in systems where the path of light needs to be precisely controlled, such as in beam delivery systems, interferometers, and optical testing setups.

The window is uncoated, meaning it does not have any additional layers applied to its surface. This can be advantageous in applications where the user wants to minimize reflection or where specific coatings are not required. However, it's important to note that uncoated windows can have higher reflection losses compared to coated ones.

The window's geometry is defined as a thin lens, which is a lens with a thickness much smaller than its diameter. This geometry is often used in optical systems where the lens's thickness does not significantly affect the optical path.

The window is designed to operate at a wavelength of 588 nm, making it suitable for applications that use visible light. However, it can also be used in systems that operate at different wavelengths, although its optical performance may vary.