G314325331 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-1000mm

The G314325331 is a Plano-Concave Lens with a diameter of 25.4 mm, sourced from Qioptiq Photonics. This lens is designed for use in optical systems that require negative focal lengths. The lens's geometry includes a center thickness of 1.5 mm and an effective focal length (EFL) of -1000mm, making it suitable for applications that require substantial optical power.

The lens is made from N-BK7, a popular optical glass known for its excellent optical properties and wide transmission range. This material is particularly suitable for applications in the visible spectrum, as demonstrated by the wavelength of 588nm specified in the item data.

The lens features a coating on both the front and back surfaces. The coating, identified as 'qio al ralvis aoi 45', is designed to enhance the lens's performance by reducing reflection and improving transmission. This coating is particularly beneficial in applications where high transmission and low loss are critical.

The lens's shape is spherical, a common choice for optical elements due to its ease of manufacturing and high optical quality. The inner and outer radii are both zero, indicating a simple, symmetrical design.