68-391 35 x 35 mm 40:60 (R:T) N-BK7 Plate Beamsplitter; t=3mm VIS 400-700nm

The 68-391 is a high-quality beamsplitter from Edmund Optics, designed for use in the visible light spectrum, specifically between 400 and 700nm. This beamsplitter is rectangular in shape, with dimensions of 35 x 35 mm, and has a thickness of 3mm, making it a robust and stable option for various optical applications.

The beamsplitter is made from N-BK7, a popular optical glass due to its excellent optical properties and high Abbe number. This material ensures high transmittance and low dispersion, making it ideal for applications that require precise optical performance.

The coating on the front surface of the beamsplitter is EDM 68-381, a proprietary coating developed by Edmund Optics. This coating is designed to provide a 40:60 (R:T) split, meaning that 40% of the incident light is reflected while 60% is transmitted. This ratio is crucial in many optical systems, such as interferometers and beam combiners.

The beamsplitter's thin lens shape allows for easy integration into various optical systems. It also features a high damage threshold, ensuring durability and longevity in demanding environments. The beamsplitter is currently in stock and available for immediate shipping, as indicated by its valid weblink status.