This is a Plano-Concave Lens, type of Spherical Lens, offered by Standa. It features a base shape of Circular and is designed for use in various optical applications. The lens has a diameter of 25.4 mm and a center thickness of 3.9 mm, with the edge thickness being slightly larger at 4 mm.
The effective focal length (EFL) of this lens is -1500 mm, indicating that it is a diverging lens, causing parallel rays to spread out after passing through it. The radius of curvature for the concave surface is -778.05 mm. The lens does not have any coating, as indicated by the empty 'coating' field in the item data.
The lens is made of n-BK7 Schott material, a common type of optical glass known for its excellent optical properties and high Abbe number, making it suitable for a wide range of applications. The lens is designed to operate at a wavelength of 546 nm.
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