86-641 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 450nm

The 86-641 is a Bandpass Filter with a diameter of 12.5 mm, sourced from the reputable optical components vendor, Edmund Optics. This filter is specifically designed for a central wavelength of 450nm, making it ideal for applications that require narrowband transmission at this wavelength.

The filter is hard coated on both sides with the front coating designated as 'edm 86-641' and the back coating as 'edm 86-641'. This hard coating enhances the filter's durability, making it resistant to wear and tear, a crucial factor for applications that require long-term use.

The filter's geometry includes a thickness of 3.5 mm and a cut-on wavelength of 437.5nm, and a cut-off wavelength of 462.5nm. This ensures a tight transmission band around the central wavelength, reducing unwanted spectral leakage. The cut-on and cut-off wavelengths are crucial specifications for bandpass filters, as they define the range of wavelengths that the filter allows to pass.

The filter is of the Circular shape and has a Sub Type of Bandpass Filter. It is made from UVFS Mal- 1965 material, a common choice for optical filters due to its excellent optical properties and versatility. The filter's geometry is that of a Thin Lens, making it suitable for use in optical systems where minimal optical path deviation is required.

The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its weblink status. The website link is provided in the item data for easy access and purchase.