LC1611-B N-BK7 Plano-Concave Lens; Dia:2 in; f=-150.0 mm ARC 650-1050nm

The LC1611-B is a plano-concave lens made from N-BK7 glass, a popular material in the optical industry due to its excellent optical properties. This lens, sourced from Thorlabs, features a diameter of 2 inches and a focal length of -150.0 mm, making it suitable for a wide range of applications.

The lens's geometry includes a thickness of 8.3 mm at the edge and 4 mm at the center, with an effective focal length (EFL) of -150 mm. The radius of curvature (R1) is -77.2 mm, and the back focal length (BFL) is -152.6 mm. The lens's inner and outer radii are both 0, indicating a flat surface on one side and a curved surface on the other.

This lens is designed to work with a wavelength of 587.6 nm, which falls within the visible light spectrum. It is coated with a broadband anti-reflection coating (ARC) that covers the spectrum from 650 to 1050 nm, enhancing its transmission capabilities and reducing unwanted reflections.

The LC1611-B's shape is spherical, a common geometry in optical lenses due to its ease of manufacturing and good optical performance. The lens is designed to be used in a plano-concave configuration, where one surface is flat, and the other is curved, focusing light onto a single point.