LC2679-A 25.4 mm Dia. N-SF11 Plano-Concave Lens; EFL=-30mm 350-700nm

The LC2679-A is a 25.4 mm diameter Plano-Concave Spherical Lens, designed and manufactured by Thorlabs. This lens is specifically engineered for use within the wavelength range of 350-700nm, making it suitable for a wide array of optical applications.

The lens features an effective focal length (EFL) of -30mm, indicating its concave design. The EFL is a crucial parameter in lens selection, as it directly influences the magnification and focusing capabilities of the lens. A negative EFL, as in this case, denotes a diverging lens, which spreads out light rays.

The lens is constructed from N-SF11 Schott glass, a material known for its high refractive index and low dispersion. This makes the lens particularly effective at bending light rays without causing significant chromatic aberration.

The LC2679-A is coated with a THo A Bbar coating on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving overall system efficiency.

The lens has a center thickness of 3.5mm and a clear aperture, with no inner or outer radius specified, indicating a uniform curvature across the lens surface. This lens is currently in stock and available for immediate purchase through the provided weblink.