LPK-25.0-77.8-C 25 mm Dia. N-BK7 Image Grade Plano-Concave Lens; EFL=-150mm Uncoated

The LPK-25.0-77.8-C is a high-quality Plano-Concave Spherical Lens, boasting a 25 mm diameter and a center thickness of 2 mm. This lens is crafted from N-BK7 Schott glass, a popular choice for its excellent optical properties and versatility. The lens is uncoated, offering a wide range of applications across various industries.

The lens's effective focal length (EFL) is -150mm, indicating its concave nature. This negative focal length is typical of concave lenses, which diverge light rays. The inner and outer radii are both zero, suggesting a symmetrical curvature.

This lens is designed for use with a wavelength of 546.1 nm, a common choice for many optical systems due to its location in the visible spectrum. It is part of CVI Laser Optics' extensive catalog, a reputable vendor known for their high-grade optical components.

Please note that the lens is uncoated. While this can be advantageous in certain applications, it may lead to reduced transmission and increased susceptibility to environmental factors in others. Coatings can be added to enhance performance, depending on the specific requirements of your application.