68-397 75 x 75 mm 40:60 (R:T) N-BK7 Plate Beamsplitter; t=3mm VIS 400-700nm

This 75 x 75 mm N-BK7 Plate Beamsplitter, model number 68-397, is a high-quality optical component sourced from Edmund Optics. It is designed for use in the visible light spectrum, specifically between 400 and 700 nanometers. The beamsplitter has a thickness of 3mm, providing robustness and stability in its operation.

The beamsplitter is of the Thin BS subtype, which refers to its specific construction and function. It features a 40:60 (R:T) split ratio, meaning that it reflects 40% of the incoming light and transmits 60%. This makes it suitable for applications where balanced light division is required.

The beamsplitter's coating, edm 68-381, is applied to the front surface. This coating enhances the beamsplitter's performance within its specified wavelength range. The coating ensures optimal reflection and transmission rates, contributing to the overall efficiency and effectiveness of the optical system in which it is used.

The beamsplitter's geometry is rectangular, with a width of 75mm and a height of 75mm. This size provides a substantial surface area for light interaction, making it suitable for a wide range of optical applications.

The beamsplitter is made from N-BK7 Schott glass, a material known for its excellent optical properties. This includes a high Abbe number, low auto-fluorescence, and excellent homogeneity, making it a popular choice for many optical applications.