39-378 50 mm Dia. Hard Coated OD 4.0 5nm Bandpass Filter; t=3.5 mm 532nm

The 39-378 is a Bandpass Filter with a diameter of 50 mm, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for a central wavelength of 532 nm, making it ideal for applications that require precise wavelength selection within this range.

The filter boasts a hard coating on both the front and back surfaces, denoted as 'edm 39-332'. This coating enhances the filter's durability, making it resistant to scratches and other forms of wear and tear. The coating also aids in maintaining the filter's performance over time, ensuring consistent operation in your optical system.

The filter's geometry is defined by a diameter of 50 mm and a thickness of 3.5 mm. This thickness is often referred to as 't' in optical specifications. The diameter is a critical parameter as it determines the filter's light-gathering capacity and its compatibility with various optical systems.

The filter's physical data includes a cut-on wavelength of 529.5 nm and a cut-off wavelength of 534.5 nm. These values represent the boundaries within which the filter allows light to pass. The Central Wavelength (CWL) is 532 nm, which is the wavelength at which the filter's transmission is maximum.

The filter's Sub Type is Bandpass, which means it allows light within a specific range of wavelengths to pass while blocking light outside this range. This makes it an excellent choice for applications that require wavelength selectivity, such as fluorescence microscopy, laser spectroscopy, and optical communication systems.