65-175 25 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 694nm

The 65-175 is a Bandpass Filter with a diameter of 25 mm, manufactured by Edmund Optics. This filter is specifically designed for use with a central wavelength of 694 nm, making it suitable for applications that require precise wavelength selection.

The filter features a hard coating on both the front and back surfaces, denoted as 'edm 65-114'. This coating enhances the filter's durability and resistance to wear, ensuring long-lasting performance. The filter's thickness is 3.5 mm, and it has a cut-on wavelength of 689 nm and a cut-off wavelength of 699 nm.

The 694 nm Center Wavelength (CWL) is a crucial specification for this filter. It signifies the wavelength at which the filter's transmission is maximum. The cut-on and cut-off wavelengths, on the other hand, represent the wavelengths at which the filter starts and stops transmitting, respectively.

This filter is designed in a circular shape, commonly referred to as a 'Thin Lens' shape in the industry. It is made from UVFS material with the Mal-1965 ID. The filter's geometry, including its diameter and thickness, is designed to optimize its performance in various optical systems.

The filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. The link's status is valid, indicating that the information is up-to-date and accurate.