AC064-015-C 6.35 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=15mm 1050-1700nm

The AC064-015-C is an unmounted achromatic doublet lens, part of Thorlabs' extensive catalog of optical elements. This lens is designed for use in the 1050-1700nm wavelength range, making it suitable for a variety of applications in the near-infrared spectrum.

The lens features a base shape of a circle, with a diameter of 6.35mm. The edge thickness is 2.9mm, while the inner and outer radii are both zero. The lens's first radius of curvature (r1) is 22.7mm, and the second radius (r2) is -4.9mm, followed by a third radius (r3) of -11.3mm. The center thicknesses are 2.3mm for the first center and 1.3mm for the second.

The lens is made from two materials: N-LAK22 and N-SF6, both from Schott. These materials are chosen for their optical properties in the near-infrared range. The lens is coated with Thorlabs' AC1050-1700-C coating on both the front and back surfaces to enhance its performance in this spectral range.

The lens is a multiplet, meaning it is composed of multiple elements to achieve specific optical properties. In this case, the multiplet design helps to reduce chromatic aberration, a common issue in lens systems, particularly in broadband or near-infrared applications.

The lens is currently in stock and available for purchase through Thorlabs' website. For more information, users can refer to the provided weblink.