LD2297 N-SF11 Bi-Concave Lens; Dia:25.4 mm; f=-25.0 mm Uncoated

The LD2297 N-SF11 Bi-Concave Lens is a high-quality optical component sourced from Thorlabs, a leading global manufacturer of photonics equipment. This lens, with a diameter of 25.4 mm, is designed for use in a wide range of optical systems, offering a focal length of -25.0 mm for precise focusing capabilities.

The lens is made from N-SF11 glass, a type of Schott glass known for its excellent optical properties. This material is particularly suitable for applications that require high dispersion and low auto-fluorescence. The bi-concave design, featuring both surfaces curved inward, provides a unique optical profile that can be beneficial in various applications.

The geometry of the lens includes a thickness of 7.2 mm at the edge and 3 mm at the center, providing a robust structure while minimizing unnecessary weight. The effective focal length (EFL) is -25 mm, and the back focal length (BFL) is -25.6 mm, offering a compact solution for optical systems where space is a constraint.

The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. However, this does not affect its performance in many applications, and it can be easily customized with various coatings upon request.

The LD2297 N-SF11 Bi-Concave Lens is currently in stock, according to the vendor's website, making it readily available for immediate use in your optical projects. For more detailed information, you can refer to the vendor's product page linked below.

References:

• Thorlabs LD2297 Product Page