354340-B 6.325 mm Dia. D-ZK3 Molded Glass Aspheric Lenses; EFL=4 mm; NA=0.64 AR 600-1050nm

The 354340-B is a high-quality aspheric lens, precision-molded from D-ZK3 glass, a type of glass known for its excellent optical properties. This lens boasts a diameter of 6.325 mm and a center thickness of 3.097 mm, making it suitable for a wide range of optical applications. The lens features an effective focal length (EFL) of 4 mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity.

The lens's design includes a front radius of curvature (R1) of 12.67523 mm and a back radius (R2) of -2.619752 mm. The aspheric shape of the lens helps to minimize spherical aberration, a common issue in optical systems where light rays do not converge at a single point, leading to distorted images. The lens has a numerical aperture (NA) of 0.64, which measures the light-gathering ability of the lens and its ability to resolve fine details.

The 354340-B lens is coated with a broadband anti-reflective coating, specifically designed for the wavelength range of 600-1050 nm. This coating reduces unwanted reflections, improving the overall transmission of light through the lens and enhancing the quality of the image. The lens is available from Thorlabs, a leading manufacturer of optical components, and is currently in stock, ensuring quick delivery for your optical project needs.