G063061400 22.4 mm Dia. N-BK7 Mounted Double-Concave Lens; EFL=-50mm

This is a G063061400 model lens, a high-quality optical component manufactured by Qioptiq Photonics. The lens boasts a 22.4 mm diameter and is designed with a double-concave structure, making it suitable for a wide range of applications.

The lens is made from N-BK7, a popular optical glass known for its excellent optical properties. This material is renowned for its low dispersion and high Abbe number, making it an ideal choice for applications that require high image quality and minimal chromatic aberration.

The lens has a focal length of -50mm, indicated by its Effective Focal Length (EFL). This negative focal length signifies that the lens is a diverging lens, which spreads out light rays. This type of lens is often used in applications such as beam expanders, photolithography, and other systems where light needs to be spread out.

The lens features a center thickness of 1.5mm, providing a good balance between mechanical strength and optical performance. The lens is coated with Qio Silver RAGV 45 on both the front and back surfaces, enhancing its light transmission capabilities and durability.

The item data also indicates that the lens has a spherical shape, which is the most common shape for optical lenses due to its ease of manufacturing and excellent optical performance. The lens's inner and outer radii are not specified, suggesting that they are not critical to its performance or are standard for this type of lens.