66-056 25.4 mm Dia. Hoya R-66 Red Longpass Color Glass Filter 660nm

The 66-056 is a 25.4 mm diameter color glass filter developed by Hoya, a renowned optical components manufacturer. This filter is specifically designed for longpass applications with a cut-on wavelength of 660nm, making it ideal for use in systems where light with wavelengths shorter than 660nm needs to be blocked or filtered out.

The filter is part of the R-66 series, which is known for its high-quality optical glass and precise coatings. The 66-056 features a thin lens shape, with a thickness of 2.5mm, designed to minimize optical aberrations and ensure high optical performance. The filter's circular geometry, with a diameter of 25.4mm, is compatible with most optical systems and can be easily integrated into various setups.

The 66-056 is coated with EDM 66-045 on both the front and back surfaces. This coating enhances the filter's performance by reducing surface reflections and improving transmission. The coating also provides chemical resistance and durability, ensuring the filter's longevity and reliability in various environments.

This filter is sourced from Edmund Optics, a leading supplier of optical components, and is available for purchase through their website. The item data indicates that it is currently in stock, ensuring quick delivery and minimal lead times for your optical system projects.