68-538 20 x 20mm 70:30 (R:T) N-BK7 Standard Cube Beamsplitter; t=20mm 400-700nm

The 68-538 is a standard cube beamsplitter offered by Edmund Optics, designed for use in the 400-700nm wavelength range. This beamsplitter is characterized by its 20mm x 20mm geometry, with a thickness of 20mm, making it a robust and compact solution for various optical applications.

The beamsplitter's primary function is to divide incoming light into reflected and transmitted components. In this case, the beamsplitter has a reflection ratio of 70:30 (R:T), meaning it reflects 70% of the incident light and transmits 30%. This ratio is consistent across all wavelengths within the specified range, ensuring predictable and reliable performance.

The beamsplitter is made from N-BK7, a high-quality borosilicate glass commonly used in optical applications due to its excellent optical properties. The glass is coated with EDM MGF2 std curve on all surfaces, providing durable protection and enhancing its performance within the specified wavelength range.

This beamsplitter is a cube type, featuring hypotenuse faces coated with EDM Vis R70 T30 and EDM MGF2 std curve. This design allows for efficient light splitting while minimizing losses and maintaining high optical quality.