LC1258-A N-BK7 Plano-Concave Lens; Dia:25 mm; f=-75.0 mm ARC 350-700nm

The LC1258-A is a high-quality plano-concave lens, designed and manufactured by Thorlabs, a leading global supplier of photonics equipment. This lens is crafted from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for a wide range of applications.

The lens boasts a diameter of 25 mm, providing a substantial surface area for light transmission. The plano-concave design, characterized by one flat and one curved surface, is particularly useful in applications where beam divergence needs to be controlled or reduced. The effective focal length (EFL) of this lens is -75 mm, indicating that it will cause incoming light to diverge.

The LC1258-A features a center thickness of 3.5 mm and an edge thickness of 5.6 mm, providing robustness and durability. The lens is coated with ARC 350-700nm, a broadband anti-reflection coating that enhances transmission and reduces unwanted reflections, ensuring optimal performance.

This lens is suitable for use with a wavelength of 632.8 nm, a common wavelength used in many optical systems. The lens's spherical shape ensures consistent optical performance across the entire surface.