87-237 12.5 mm Dia. Hard Coated Tri-Band Fluorescence Bandpass Filter; t=2 mm 457/530/628nm

The 87-237 is a Tri-Band Fluorescence Bandpass Filter, sourced from the renowned optical components vendor, Edmund Optics. This filter, with a diameter of 12.5 mm, is designed to allow transmission of light at specific wavelengths while blocking other wavelengths, making it ideal for applications that require precise wavelength selection.

The filter is made of UVFS Mal-1965 material, a common choice for optical filters due to its excellent optical properties. It has a thickness of 2 mm, providing sufficient structural integrity for most applications. The filter's base shape is circular, a geometry that is often used in optical systems due to its ease of alignment and integration.

The 87-237 filter is specifically designed to pass three wavelengths: 457nm, 530nm, and 628nm. The 'cut on' wavelength is 446nm, and the 'cut off' wavelength is 468nm, indicating the range of wavelengths that the filter begins to transmit and stop transmitting, respectively. The 'cwl', or central wavelength, is 457nm, representing the central point of the filter's passband.

The filter features hard coating on both the front and back surfaces, denoted as 'edm 87-237'. This coating enhances the filter's durability and resistance to environmental factors, ensuring long-lasting performance. The filter's shape is thin lens, a design that minimizes optical aberrations and maintains the integrity of the light path.

According to the vendor's website, the filter is currently in stock, indicated by the 'weblink status' of 'Valid - in stock'. The filter's catalog number is 87-237, and it can be found on the Edmund Optics website via the provided weblink.