354061-A 6.325 mm Dia. D-ZK3 Molded Glass Aspheric Lenses; EFL=11 mm; NA=0.24 AR 350-700nm

The 354061-A is a high-quality aspheric lens, precision-molded from D-ZK3 glass, a type of CGDM material, and sourced from the renowned optical component manufacturer, Thorlabs. This lens is designed for use with a wavelength of 633 nm and boasts an effective focal length (EFL) of 11 mm, making it suitable for a wide range of optical applications.

The lens features a diameter of 6.325 mm and a thickness at the edge of 1.754 mm, ensuring robustness and durability. The center thickness is slightly less at 2.434 mm, reducing unnecessary weight without compromising on performance. The lens's shape is defined by its front and back radii (R1 and R2), which are 0 mm and -6.428042 mm respectively, and its conic constant (k1), which is 0.

The lens's numerical aperture (NA) is 0.24, indicating a wide acceptance angle and high light-gathering capability. The front and back surfaces of the lens are coated with a broadband anti-reflective coating (AR), specifically designed for the 350-700 nm range, further enhancing its performance and versatility.