A method of aligning a lens device includes: coupling an optical free-space beam that propagates along a first direction into an access port of an optoelectronic component, the first, a second, and a third direction being mutually perpendicular; positioning the lens device inside a free-space beam path, the lens device having an adjustment lens configured to focus radiation in only the second direction; moving the lens device along the second direction to align the adjustment lens with respect to the access port at an initial aligned position at which the optical free-space beam is one-dimensionally focused by the adjustment lens and at least a portion of a resulting one-dimensionally focused beam is input into the access port; and starting from the initial aligned position, moving the lens device in the second and/or third directions to position an optical element of the lens device in front of the access port.