This is a Plano-Concave Lens from Laser Components, a renowned vendor in the optical industry. The lens, which is uncoated, has a base shape of a circle and is made of N-BK7 Schott, a popular material in the field of optics due to its excellent optical properties.
The lens has a diameter of 25.4 mm and a center thickness of 2.6 mm. It is designed with a concave surface, featuring a radius of curvature of -206 mm. The effective focal length (EFL) of this lens is -400 mm, making it suitable for use in various applications that require a negative focal length.
The lens is designed to work with a wavelength of 633 nm, and its geometry is spherical, which is a common shape for optical lenses due to its ease of manufacturing and good optical performance. The lens does not have any coating, which means it is in its most basic form, offering no additional benefits such as anti-reflective properties or increased durability.
The link to the datasheet for this lens is provided in the item data for further reference and detailed specifications. This lens is currently in stock, ensuring quick delivery upon order.