LC2265-C 12.7 mm Dia. N-SF11 Plano-Concave Lens; EFL=-15mm 1050-1700nm

The LC2265-C is a plano-concave lens with a diameter of 12.7 mm, sourced from the reputable optical components manufacturer, Thorlabs. This lens is designed for use within the wavelength range of 1050-1700nm, making it suitable for a variety of applications within the near-infrared spectrum.

The lens is constructed from N-SF11 Schott glass, a material known for its high refractive index and low dispersion, making it an ideal choice for applications requiring high-performance imaging or beam manipulation. The plano-concave geometry of the lens, characterized by a flat front surface and a curved back surface with a radius of curvature of -11.7 mm, results in a negative focal length of -15 mm. This design is particularly useful for collimating or reducing the divergence of light beams.

The lens features broadband anti-reflection coatings on both the front and back surfaces, denoted as 'tho c bbar'. These coatings are designed to minimize surface reflections, thereby improving transmission and reducing the likelihood of unwanted optical losses. The lens has a center thickness of 3 mm, providing a robust and compact design.