65-209 50 mm Dia. Hard Coated OD 4.0 10nm Bandpass Filter; t=3.5 mm 492nm

The 65-209 is a Bandpass Filter with a diameter of 50 mm, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for use with a central wavelength (CWL) of 492 nm, making it ideal for applications that require precise wavelength selection within this range.

The filter is constructed with a hard-coated outer diameter (OD) of 4.0, ensuring durability and resistance to wear and tear. It has a thickness of 3.5 mm, providing sufficient structural integrity for most optical applications. The bandpass nature of this filter allows for the transmission of light within a specific range of wavelengths, while blocking out unwanted wavelengths.

The 65-209 features a cut-on wavelength of 487 nm and a cut-off wavelength of 497 nm. This means that it begins to transmit light at 487 nm and stops transmitting at 497 nm, effectively filtering out any wavelengths outside this range. The CWL of 492 nm falls within this range, ensuring optimal performance for its intended use.

The filter is coated with EDM 65-087 on both the front and back surfaces. This coating enhances the filter's performance and durability, providing a reliable optical solution for various applications. The filter's thin lens shape further contributes to its versatility and ease of integration into optical systems.