Near infrared achromatic lens is designed to provide the smallest spot size possible for polychromatic light between 750 and 1100nm. By utilizing achromatic lens instead of standard doublets designed for the visible, RMS spot diameter can be reduced from 43?m to 22.5?m, for example, when using polychromatic light. Spot size will be smaller when focusing monochromatic sources. Near infrared achromatic lens also reduce spherical aberration and have superior performance when used with a monochromatic source up to 2?m in wavelength. Typical applications for these achromatic lens include: imaging lenses for the near infrared, focusing and expanding of NIR lasers, and focusing/collimating lenses for fiber optics and NIR LEDs.