OPSQ-20S03-1-5 20 x 20 mm UVFS Square Optical Parallel Flat Window; t=3 mm Uncoated

The OPSQ-20S03-1-5 is a high-quality optical window from OptoSigma, designed for use in a variety of optical systems. This window is rectangular in shape, with dimensions of 20 x 20 mm, making it suitable for applications that require a larger aperture. The window has a thickness of 3 mm, providing excellent structural integrity and rigidity.

The window is made from UVFS, a type of synthetic fused silica. This material is known for its exceptional optical properties, including high transparency across a wide range of wavelengths. The UVFS material also offers excellent thermal stability and chemical resistance, making it ideal for use in harsh environments.

This particular window is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. This can be advantageous in certain applications where the natural reflectivity of the material is desired or where the cost of additional coatings is a concern. However, it's important to note that uncoated windows can exhibit higher levels of reflection, which may need to be taken into account in the design of the optical system.

The OPSQ-20S03-1-5 is available from OptoSigma and is currently in stock, according to the vendor's website. This window is part of a larger family of optical windows offered by OptoSigma, providing users with a wide range of options to choose from based on their specific needs and application requirements.