PLCC-25.4/128.8C 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-250mm Uncoated

This is a Plano-Concave Spherical Lens, sourced from the reputable vendor Laser Components. The lens has a diameter of 25.4 mm and a center thickness of 4 mm, making it suitable for a wide range of optical applications. The effective focal length (EFL) of this lens is -250 mm, indicating that it is a diverging lens, which spreads out light rays that pass through it.

The lens is made of N-BK7, a popular glass type in the optical industry due to its excellent optical properties and high damage threshold. This specific lens is uncoated, meaning it does not have any additional layers to enhance its optical performance or protect it from environmental factors.

The inner radius of the lens is 0 mm, and the outer radius is also 0 mm, indicating that the lens has a flat outer surface and a concave inner surface. The wavelength for this lens is 633 nm.

For more detailed information, please refer to the datasheet provided by Laser Components, which can be found at https://www.lasercomponents.com/fileadmin/user_upload/home/Datasheets/lc-optics/substrates/plano_concave_lenses.pdf. The link is currently valid and indicates that the lens is in stock.