240-5020 50.8 mm Dia. Absorption Type Neutral Density Filter VIS 450-650nm

The 240-5020 is a Neutral Density Filter with a diameter of 50.8 mm, sourced from EKSMA Optics. This filter is designed for use within the visible light spectrum, specifically between 450-650nm.

The filter is of the absorption type, meaning it reduces the intensity of light by absorbing it. This is achieved through the application of a specialized coating, denoted as 'eks 240-2520' on both the front and back surfaces. This coating ensures consistent attenuation across the specified wavelength range.

The filter has a base shape of a circle, a standard geometry for optical components due to its symmetry and ease of integration into various systems. It has a thickness of 1.1mm, which is relatively thin, minimizing the potential for optical aberrations.

The material ID for this filter is 'uvfs mal- 1965'. While the specific properties of this material are not detailed in the provided data, it is likely chosen for its optical properties, such as transparency within the specified wavelength range and its ability to withstand the conditions it will be exposed to in its intended application.

The filter is described as having a 'Thin Lens' shape, indicating that it may have been designed with lens-like properties, such as focusing or collimating light. However, without further information, this is only a speculation.

According to the vendor, this item is currently in stock and can be purchased directly from the EKSMA Optics website via the provided weblink.