355660-B 4 mm Dia. D-ZLAF52LA Molded Glass Aspheric Lenses; EFL=3 mm; NA=0.52 AR 600-1050nm

The 355660-B is a high-quality aspheric lens, precision-molded from D-ZLAF52LA glass, a unique material with a high refractive index and low dispersion. This lens boasts a diameter of 4 mm and a thickness of 1.654 mm at the edge, making it suitable for a wide range of applications where compactness and high performance are required.

The lens features an effective focal length (EFL) of 3 mm, which is the distance from the lens's center to the focal point where light rays converge. This EFL makes the lens ideal for use in systems where a short focal length is necessary. The lens also has a numerical aperture (NA) of 0.52, which measures the light-gathering ability of the lens. A higher NA allows for a wider angle of acceptance, making this lens suitable for applications where high light-gathering capacity is required.

The 355660-B lens is coated with a broadband anti-reflective coating, specifically designed for the 600-1050 nm wavelength range. This coating reduces surface reflections, thereby increasing the amount of light transmitted through the lens. The coating also enhances the lens's durability and resistance to environmental factors, ensuring long-lasting performance.

This lens is available from Thorlabs, a leading vendor in the field of optical components. The product link provided in the item data indicates that the lens is currently in stock, ensuring quick delivery and immediate use in your optical system.