620DIB25 25 mm Dia. Standard Interference Bandpass Filter 620nm

The 620DIB25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 620nm wavelength range. Sourced from Knight Optical, a reputable vendor in the optical industry, this filter is a part of their extensive catalog, and is available for immediate use.

This filter is a Bandpass type, which means it allows light to pass through a specific range of wavelengths while blocking out other wavelengths. The 620DIB25 is cut on at 615nm and cut off at 625nm, ensuring a tight bandpass around the central wavelength of 620nm. This makes it ideal for applications that require narrowband transmission, such as fluorescence microscopy, spectroscopy, or any other application where specific wavelength selection is crucial.

The filter is made from UVFS Mal-1965, a high-quality optical material known for its excellent transmission and low autofluorescence properties. The filter has a thickness of 6.1mm, providing sufficient mechanical strength for most applications. It features a Thin Lens shape, which is advantageous in applications where space is limited or where minimal optical aberrations are required.

The front and back surfaces of the filter are coated with KNI 620DIB, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing surface reflections and improving transmission in the passband. The coating also provides environmental protection, ensuring the filter's longevity and durability.