355660-C 4 mm Dia. D-ZLAF52LA Molded Glass Aspheric Lenses; EFL=3 mm; NA=0.52 AR 1050-1700nm

The 355660-C is a high-quality aspheric lens, precision-molded from D-ZLAF52LA glass, a unique material with a high refractive index and excellent transmission properties in the near-infrared spectrum. This lens is designed for use in wavelengths around 1550 nm, making it suitable for a wide range of applications in fiber optics, telecommunications, and laser systems.

The lens has a diameter of 4 mm and a thickness of 1.654 mm at the edge, with a center thickness of 2.5 mm. The effective focal length (EFL) is 3 mm, providing a compact and efficient optical solution. The lens features a high numerical aperture (NA) of 0.52, enabling it to gather and focus light efficiently, which is crucial in many optical systems.

The 355660-C is coated with a broadband anti-reflective coating (AR) that covers the wavelength range from 1050 nm to 1700 nm. This coating reduces surface reflections, improving transmission and enhancing the overall performance of the lens. The lens is available from Thorlabs, a leading vendor in the field of optical components, and is currently in stock, ensuring quick delivery and reliable service.