87-840 50 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 1250nm

The 87-840 is a Bandpass Filter, specifically designed for use in optical systems where precise wavelength selection is required. Sourced from Edmund Optics, this filter boasts a 50 mm diameter and a thickness of 3.5 mm, making it suitable for a wide range of applications.

This filter is designed to transmit light within a specific wavelength range, while blocking light outside of this range. The cut-on wavelength is 1237.5 nm, and the cut-off wavelength is 1262.5 nm, with a central wavelength (CWL) of 1250 nm. This makes it ideal for applications that require the transmission of light in the near-infrared spectrum.

The 87-840 features hard coating on both the front and back surfaces, providing enhanced durability and resistance to scratches and other forms of damage. The coating material is UVFS Mal-1965, which is known for its excellent optical properties and stability.

The filter has a circular shape and a Thin Lens design, which helps to minimize optical aberrations and distortions. This, combined with its robust construction and precise wavelength selection, makes the 87-840 an excellent choice for a wide range of optical applications.

For more information, including pricing and availability, please refer to the provided weblink.