65-217 50 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 535nm

The 65-217 is a Bandpass Filter with a diameter of 50 mm, sourced from the reputable optical components vendor, Edmund Optics. This filter is specifically designed for applications requiring a narrow passband, making it ideal for tasks such as fluorescence microscopy, spectroscopy, and other precision optical systems.

The filter features a 10nm bandpass, centered at a wavelength of 535nm. This means it allows light within a narrow range around 535nm to pass through while blocking out other wavelengths. The cut-on wavelength is 530nm, and the cut-off wavelength is 540nm, further illustrating its narrow passband.

The filter is constructed with a hard coating on both the front and back surfaces, providing enhanced durability and resistance to scratches and other forms of damage. The coating is identified as 'edm 65-095', a detail that may be useful for those familiar with Edmund Optics' coating nomenclature.

The filter has a thickness of 3.5 mm, which is a standard value for many optical applications. It is shaped as a thin lens, a geometry that is often preferred in optical systems due to its minimal impact on the light path.

For those interested in purchasing this item, it is currently in stock and can be found on the Edmund Optics website using the catalog number 65-217. The link to the product page is provided in the item data for convenience.