A375-C 6.51 mm Dia. H-LAK54 Molded Glass Aspheric Lenses; EFL=7.5 mm; NA=0.3 AR 1050-1620nm

The A375-C is a high-quality aspheric lens, precision-molded from H-LAK54 glass, a type of optical glass known for its excellent transmittance and durability. This lens boasts a diameter of 6.51 mm and a center thickness of 2.75 mm, making it a compact yet robust optical component. The lens features an effective focal length (EFL) of 7.5 mm, which is the distance from the lens's center to the focal point where light rays converge.

The A375-C's aspheric design is a significant advantage over traditional spherical lenses. Aspheric lenses reduce spherical aberration, a common optical issue where light rays fail to converge at a single point, leading to distorted images. By having a more complex surface profile, aspheric lenses can focus light more accurately, providing sharper images and improved optical performance.

This lens has a numerical aperture (NA) of 0.3, which measures the lens's light-gathering ability. A higher NA allows more light to pass through the lens, which is beneficial in low-light conditions or when high-resolution imaging is required.

The A375-C is coated with a broadband anti-reflection (AR) coating, optimized for the 1050-1620nm wavelength range. This coating reduces surface reflections, improving light transmission and reducing unwanted glare and ghosting effects. The coating also provides protection against environmental factors, ensuring the lens maintains its optical performance over time.