65-564 1 mm Dia. N-PSK53A/N-LASF9 Achromatic Doublet; EFL=1.5mm MgF2 400-700nm

The 65-564 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This particular model boasts a 1 mm diameter and a focal length of 1.5 mm, making it an ideal choice for compact optical systems.

The lens is constructed from two types of glass, N-PSK53A and N-LASF9, both from the reputable Schott glass catalog. This combination is strategically chosen to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The achromatic design ensures that the lens focuses both red and blue light to the same point, providing sharper images.

The lens features a standard MgF2 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission, particularly in the 400-700 nm range. This makes the lens suitable for a wide range of applications, including but not limited to, machine vision, biomedical imaging, and beam shaping.

The geometry of the lens is also noteworthy. It has a thickness of 0.8 mm at the edge, reducing its overall weight and making it more suitable for miniature applications. The center thickness is 0.5 mm, providing structural rigidity while maintaining a low profile. The lens also features a curvature of 0.8 mm and -0.8 mm on the first and second surfaces, respectively, and a third surface with a curvature of -4.5 mm, contributing to its achromatic properties.