68-378 50 x 75 mm 20:80 (R:T) N-BK7 Plate Beamsplitter; t=3mm NIR 700-1100nm

The 68-378 is a rectangular beam splitter, measuring 50 x 75 mm, with a thickness of 3mm, sourced from Edmund Optics. This beamsplitter is designed for use in the near-infrared (NIR) spectrum, specifically for wavelengths between 700 and 1100nm.

The beamsplitter is of the 20:80 type, indicating that it reflects 20% of the incident light and transmits 80%. This ratio is maintained consistently across the specified wavelength range. The coating on the front surface is EDM 68-364, which contributes to the beamsplitter's performance.

The material of the beamsplitter is N-BK7, a widely used optical glass due to its excellent optical properties. This material is known for its low auto-fluorescence, making it suitable for applications where minimal background noise is required.

The beamsplitter is shaped as a thin lens, which can be advantageous in certain optical systems due to its compact design. The physical data provided indicates a reflection of 0.2 (20%) and a transmission of 0.8 (80%), aligning with the 20:80 type designation.

For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.