64-250 25 mm Dia. High Performance Laser Line Bandpass Filter; t=2mm 488nm

The 64-250 is a high-performance laser line bandpass filter, designed and manufactured by Edmund Optics. This filter, with a diameter of 25 mm, is specifically engineered for use with 488 nm lasers, making it an ideal choice for applications that require precise wavelength selection in this range.

The filter is made from n-BK7 Schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. This material ensures high-fidelity light transmission, reducing the risk of signal distortion or loss. The filter's base shape is circular, contributing to its ease of integration into various optical systems.

The 64-250 filter boasts a thickness of 2 mm, providing sufficient structural integrity while minimizing optical distortions. Its coating, edm 47-491, is applied to both the front and back surfaces, enhancing its performance and durability. This coating is designed to optimize the filter's transmission and reflection characteristics, thereby improving its overall efficiency.

The filter's geometry is defined by its diameter and thickness. With a diameter of 25 mm, it offers a generous aperture, allowing for efficient light collection and transmission. The thickness of 2 mm ensures rigidity and stability, reducing the risk of deformation or damage during handling or operation.

The physical data of the filter includes a center wavelength (CWL) of 488 nm, which is the specific wavelength that the filter is designed to transmit. This CWL is crucial in determining the filter's suitability for a particular application.