87-775 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 425nm

The 87-775 is a Bandpass Filter with a diameter of 12.5 mm and a thickness of 3.5 mm, designed for use in optical systems that require precise wavelength selection. This filter, available from Edmund Optics, is specifically designed for a central wavelength (CWL) of 425nm, making it suitable for applications that operate within this wavelength range.

The filter is hard coated with a durable coating on both the front and back surfaces, indicated by the "edm 87-775" coating type. This coating enhances the filter's durability and resistance to environmental factors, ensuring reliable performance over time.

The 87-775 filter features a cut-on wavelength of 412.5nm and a cut-off wavelength of 437.5nm. This means that it allows light within this narrow bandwidth to pass through while blocking out unwanted wavelengths. This feature is crucial in applications where stray light or out-of-band radiation can interfere with the desired optical signal.

The filter is designed in a Thin Lens shape, which is a common form factor for optical elements. This shape allows for easy integration into various optical systems. The filter is made from UVFS Mal-1965 material, a type of optical glass known for its excellent optical properties.

The 87-775 filter is currently in stock and available for purchase through the Edmund Optics website. The provided weblink leads directly to the product page, ensuring easy access for users interested in this product.