SLB-25-70N 25.0 mm Dia. x -70.0 mm FL; Plano-Concave Lens Uncoated

The SLB-25-70N is a Plano-Concave Lens, part of the Spherical Lens family, sourced from OptoSigma. This lens is uncoated and features a base shape of a circle, with a diameter of 25.0 mm. The lens's edge thickness is 4.2 mm, while the center thickness is 2.0 mm. The effective focal length (EFL) of this lens is -70.0 mm, making it a negative or diverging lens.

The lens's first radius of curvature (R1) is -36.33 mm, and the back focal length (BFL) is -71.3 mm. The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and wide transparency range. The lens is designed to operate at a wavelength of 546.1 nm.

The item data does not provide information about any coatings on this lens. Therefore, it is safe to assume that the lens is uncoated, which may affect its performance in certain applications. It is crucial to consider the lens's intended use and whether a coating would be beneficial.

This lens is currently in stock and available for purchase through the provided web link. Please ensure that this lens meets your specific optical requirements before purchasing.