645DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 645nm

Knight Optical's 645DIB12 is a 12.5 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 645nm wavelength range. This filter is a crucial component for various optical systems that require narrowband transmission, such as fluorescence microscopy, spectroscopy, and laser applications.

The filter is made from UVFS Mal-1965, a high-quality optical material known for its excellent transmission characteristics and durability. It features a circular shape, a thickness of 6.1mm, and a thin lens shape, making it compatible with a wide range of optical systems.

The 645DIB12 has a cut-on wavelength of 640nm and a cut-off wavelength of 650nm, ensuring a tight bandpass around the central wavelength of 645nm. This precise wavelength selection is achieved through the use of advanced interference filter technology, which utilizes multiple layers of thin film coatings to reflect unwanted wavelengths and transmit desired ones.

The front and back surfaces of the filter are coated with KNI 645DIB, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing surface reflections and improving transmission.

The 645DIB12 is currently in stock and available for immediate purchase from Knight Optical's website. With its high-quality construction, precise wavelength selection, and compatibility with various optical systems, this filter is an excellent choice for researchers and engineers seeking a reliable and versatile bandpass filter.