The 66-062 50.8 x 50.8 mm Hoya O-54 Orange Longpass Color Glass Filter is a rectangular filter with a wavelength of 540nm, sourced from the renowned optical vendor, Edmund Optics. This filter is designed for use in applications that require longpass filtering, specifically in the orange spectrum.
The filter boasts a base shape of 50.8 x 50.8 mm, providing a substantial surface area for optical interactions. It is constructed from UVFS MAL-1965 material, a choice that ensures durability and reliability in various optical settings. The filter's thickness is 2.5mm, contributing to its robust structure and resistance to deformation.
The 66-062 filter features a cut-on wavelength of 540nm, meaning it begins to transmit light at this point in the spectrum. It does not have a specified cut-off wavelength, indicating that it continues to transmit light beyond the 540nm point. This characteristic makes it ideal for applications that require the transmission of orange light and beyond.
The filter is coated on both the front and back with EDM 66-040, a coating that likely enhances its optical performance and durability. Its shape is defined as a Thin Lens, suggesting that it may have lens-like properties, such as focusing or diverging light.