The 69-183 is a Dichroic Shortpass Filter, 12.5 mm in diameter and 1.05 mm thick, offered by Edmund Optics. This filter is designed to transmit light below a specified wavelength while reflecting light above that wavelength, making it ideal for applications where short wavelengths need to be isolated.
The filter's primary wavelength is 588 nm, and it has a cut-on wavelength of 0 nm and a cut-off wavelength of 750 nm. This means it allows light of 588 nm and below to pass through while blocking light of 750 nm and above. The front and back of the filter are coated with "edm 69-183", a coating specifically designed for this type of filter.
The filter is shaped as a Thin Lens, which is beneficial for applications that require a flat surface. It is made from UVFS Mal-1965, a material known for its optical properties. The filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink.