65-693 25 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 492nm

The 65-693 is a 25 mm diameter Bandpass Interference Filter, manufactured by Edmund Optics. This filter is designed with a center wavelength of 492nm and a thickness of 7.5 mm, making it suitable for a wide range of optical applications.

The filter is constructed with a circular shape, providing a uniform and consistent optical path. It is made from UVFS material, specifically identified as MAL-1965, ensuring durability and reliability. The filter's geometry, including its 25 mm diameter, is designed to fit standard optical systems, while its 7.5 mm thickness provides sufficient structural integrity.

The 65-693 filter features physical data that includes a cut-on wavelength of 487nm and a cut-off wavelength of 497nm. This specifications ensure that the filter allows light within a narrow band around the center wavelength to pass through, while blocking out unwanted wavelengths. The cut-on and cut-off wavelengths are crucial in determining the filter's performance and its ability to isolate specific wavelengths.

The filter is coated with EDM 65-633 on both the front and back surfaces. This coating enhances the filter's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system. The coating also provides protection against environmental factors, ensuring the longevity of the filter.

The 65-693 filter is designed with a Thin Lens shape, which minimizes optical aberrations and distortions. This feature is particularly important in high-precision optical systems, where even minor aberrations can significantly impact the system's performance.