L-BCC018 12.5 mm Dia. Double-Concave Lens; EFL=-50mm Uncoated

The L-BCC018 is a spherical lens with a base shape of a circle, sourced from the reputable vendor, Ross Optical. This lens falls under the category of a bi-concave lens, characterized by its double-concave structure. The lens has a diameter of 12.5 mm, making it suitable for applications requiring compact optical components.

The lens features an effective focal length (EFL) of -50mm, indicating its diverging nature. This means that it spreads out light rays, making it ideal for use in applications such as beam expanders or in systems where light needs to be distributed over a larger area.

The geometry of the lens includes a thickness of 2.3mm at the edge and 1.5mm at the center. The radii of curvature for the first and second surfaces are -52.06889839mm and 52.06889839mm respectively. The lens does not have an outer or inner radius, indicating a uniform curvature across the lens surface.

The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and high damage threshold. The wavelength for this lens is 587.6nm. It is important to note that the lens does not come with any coating, which may affect its performance in certain applications. However, the uncoated feature allows for customization based on specific user requirements.