Et505-20X C 25 mm Dia. Bandpass Filter by Chroma

The Et505-20X is a high-quality Bandpass Filter, sourced from the renowned optical vendor, Chroma. This filter is designed with a circular base shape, making it compatible with a wide range of optical systems. The filter boasts a diameter of 25 mm, providing a substantial surface area for light transmission, while maintaining a manageable size for integration into various setups.

The filter's primary function is to allow light transmission within a specific wavelength range, while blocking light outside this range. The Et505-20X is designed to permit light transmission at a center wavelength of 505 nm, with a full width at half maximum (FWHM) of 20 nm. This makes it ideal for applications that require precise wavelength selection around the green spectrum.

The filter's physical data further enhances its performance. It is cut on at 495 nm and cut off at 515 nm, ensuring a sharp transition between blocked and transmitted wavelengths. The cut-on and cut-off wavelengths, combined with the center wavelength, are crucial in determining the filter's overall transmission characteristics.

The Et505-20X is coated on both the front and back with Chroma's proprietary coatings, enhancing its performance and durability. The coating on the front is 'chr et505 20x', while the back is coated with the same material. This dual-coating ensures optimal light transmission and reduces unwanted reflections, contributing to the overall efficiency and clarity of the optical system.

The filter's shape is defined as a Thin Lens, indicating its suitability for use in complex optical systems where minimal thickness is beneficial. The filter's thickness is 1 mm, providing a robust yet compact component for your optical setup.