354330 6.325 mm Dia. D-ZK3 Molded Glass Aspheric Lenses; EFL=3.1 mm; NA=0.7 Uncoated

The 354330 from Thorlabs is a high-quality aspheric lens made from D-ZK3 molded glass, designed for use in the 830 nm wavelength range. This lens boasts a diameter of 6.325 mm and a center thickness of 3.214 mm, making it a compact yet robust optical component.

The lens's geometry is meticulously crafted, with an effective focal length (EFL) of 3.1 mm, providing excellent focusing capabilities. The aspheric design, characterized by radii of curvature r1 and r2 of 2.725382 mm and -2.979042 mm respectively, ensures minimal spherical aberration, enhancing image quality.

The lens's surface profiles are defined by coefficients k1, k2, a2, a4, a6, and a8, which contribute to its unique optical properties. The front surface profile is defined by k1 (-0.542123), a2 (0), a4 (-2.07771e-05), a6 (-0.000137393), a8 (2.029328e-05), and a10 (-2.961194e-06). The back surface profile is defined by a2 (0), a4 (0.008068905), a6 (-0.001725894), a8 (0.0001839072), and a10 (-8.936267e-06).

The lens has a numerical aperture (NA) of 0.7, indicating a wide acceptance angle and high light-gathering capability. Notably, this lens is uncoated, offering a cost-effective solution for applications where coating is not a necessity.