OPB-15S02-4-5 15 x 15 mm N-BK7 Square Optical Parallel Flat Window; t=2 mm Uncoated

The OPB-15S02-4-5 is a high-quality optical window from OptoSigma, designed to provide excellent performance in a variety of applications. This window features a base shape of 15 x 15 mm, making it suitable for use in systems where a small, square window is required.

The window is made from N-BK7, a popular optical glass from Schott, known for its excellent optical properties and high damage threshold. The N-BK7 material ensures high transmission in the visible spectrum, with a peak wavelength of 588 nm. This makes it an ideal choice for applications that require high light transmission, such as imaging systems, beam delivery systems, and optical interconnects.

The window has a thickness of 2 mm, providing a good balance between mechanical strength and optical performance. The thin design minimizes optical aberrations and distortions, while still providing sufficient mechanical strength for most applications.

This particular model is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. This can be beneficial in applications where coatings may interfere with the system's performance, or where simplicity and cost-effectiveness are key factors. However, it's important to note that uncoated windows can have higher reflective losses, which may need to be taken into account in the system design.