68-418 12.5 mm Dia. 80:20 (R:T) N-BK7 Plate Beamsplitter; t=3mm NIR 700-1100nm

This 68-418 Beamsplitter, sourced from Edmund Optics, is a circular optical element with a diameter of 12.5 mm and a thickness of 3 mm. It is designed for use in the near-infrared (NIR) spectrum, specifically for wavelengths between 700 and 1100 nm.

The beamsplitter is made of N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is often used in high-precision optical systems due to its low dispersion and high homogeneity.

The beamsplitter has an 80:20 reflectance to transmission ratio, meaning that approximately 80% of the incident light is reflected while 20% is transmitted. This ratio is constant across the specified wavelength range.

The front surface of the beamsplitter is coated with the EDM 68-418 coating, which is specifically designed to enhance its performance in the NIR spectrum. This coating ensures high reflectivity and low absorption, making it ideal for applications that require efficient light splitting.

The beamsplitter's thin lens shape allows for easy integration into various optical systems. It is currently in stock, as indicated by its weblink status, making it readily available for immediate use.