68-403 25 mm Dia. 60:40 (R:T) N-BK7 Plate Beamsplitter; t=3mm VIS 400-700nm

The 68-403 is a high-quality beam splitter from the renowned optical components manufacturer, Edmund Optics. This specific model boasts a 25 mm diameter and a thickness of 3mm, making it a robust and reliable choice for various applications.

The beam splitter is made from N-BK7, a popular optical glass due to its excellent optical properties and high homogeneity. This material is known for its low dispersion and high Abbe number, making it an ideal choice for a wide range of optical systems, particularly in the visible spectrum.

The 68-403 model features a 60:40 beam splitting ratio, meaning that approximately 60% of the incident light is reflected, while the remaining 40% is transmitted. This ratio is consistent across the visible spectrum, from 400nm to 700nm, providing a broad range of applications.

The front surface of the beam splitter is coated with EDM 68-399, a proprietary coating developed by Edmund Optics. This coating enhances the performance of the beam splitter, ensuring high transmission and reflection efficiency, as well as improved durability and resistance to environmental factors.