At655-30M C 25 mm Dia. Sputter Hard Coated; Bandpass Filter

The At655-30M is a Bandpass Filter, a type of optical element designed to transmit light within a specific range of wavelengths while blocking other wavelengths. This particular model, sourced from the reputable vendor Chroma, is characterized by its circular shape and thin lens design, making it suitable for a wide range of optical applications.

The filter has a diameter of 25 mm and a thickness of 1 mm, providing a balance between compactness and durability. It is made from UVFS MAL-1965, a material known for its optical properties and robustness. The filter's base shape is circular, a common choice due to its ease of alignment and integration into optical systems.

The At655-30M's physical data includes a cut-on wavelength of 640 nm and a cut-off wavelength of 670 nm, with a central wavelength (CWL) of 655 nm. This means it allows the passage of light in the 655 nm range while blocking light of shorter or longer wavelengths. This feature is crucial in applications where specific wavelength selection is required.

The filter is coated on both the front and back surfaces with Chroma's AT655-30M coating, enhancing its performance and durability. This coating is designed to withstand the rigors of regular use, ensuring the filter maintains its optical properties over time.