The 69-872 is a Dichroic Longpass Filter, 12.5 mm in diameter and 1.05 mm thick, available from Edmund Optics. This filter is designed to transmit light at wavelengths longer than 800 nm while reflecting shorter wavelengths.
The filter's coating, denoted as 'edm 69-872' on both the front and back surfaces, is specifically designed to achieve this longpass characteristic. The filter's geometry, with a diameter of 12.5 mm and a thickness of 1.05 mm, is optimized for use in a variety of optical systems.
This filter is categorized as a Thin Lens, suggesting it may have some focusing or diverging properties, although the specific optical power is not provided in the item data. The filter is made from UVFS Mal-1965, a material with excellent optical properties in the ultraviolet, visible, and near-infrared regions of the spectrum.
The 69-872 filter is currently in stock and can be purchased directly from the Edmund Optics website. For more detailed specifications and performance data, please refer to the product page linked below.