69-867 12.5 mm Dia. Dichroic Longpass Filter; t=1.05mm 550nm

The 69-867 Dichroic Longpass Filter is a circular optical component with a 12.5 mm diameter and a thickness of 1.05mm. This filter, sourced from Edmund Optics, is designed to transmit light with wavelengths longer than 550nm, making it ideal for applications that require the separation of infrared and visible light.

The filter's coating, denoted as 'edm 69-867' on both the front and back surfaces, is specifically engineered to achieve this longpass characteristic. The cut-on wavelength, which is the point at which the filter begins to transmit light, is set at 550nm. The cut-off wavelength, the point at which the filter stops transmitting light, is 0nm, indicating that this filter will transmit all wavelengths longer than its cut-on point.

This filter is made from UVFS Mal-1965, a material known for its optical properties. The filter's geometry, with its thin lens shape, is designed for easy integration into optical systems. The catalog number for this item is 69-867, and it can be found on the Edmund Optics website, where it is currently in stock.