A lighting device for a vehicle, the lighting device comprising: a plurality of light-emitting semiconductor devices (106a, 106b), the plurality of light-emitting semiconductor devices being configured to together emit a beam of light having a beam width and a peak intensity, wherein the plurality of light-emitting semiconductor devices are separated into at least two subgroups; a plurality of optics (108a, 108b), wherein the plurality of optics are a plurality of lenses, and wherein the plurality of optics are separated into at least two subgroups, and wherein the plurality of optics are arranged relative to the plurality of light-emitting semiconductor devices such that each one of the plurality of light-emitting semiconductor devices of a first subgroup of the at least two subgroups is located at a focal point of a respective optic of a first subgroup of the plurality of optics, and such that each one of the plurality of light-emitting semiconductor devices of a second subgroup of the at least two subgroups is located at a focal point of a respective optic of a second subgroup of the plurality of optics, and wherein the optical properties of the first subgroup of the plurality of optics are different to the optical properties of the second subgroup of the plurality of optics; and a controller module configured to control at least two current signals supplied from a power source to each of the at least two subgroups of light-emitting semiconductor devices, respectively, wherein the controller module is configured to modify the beam width and the peak intensity of the emitted beam of light by varying the magnitude of the respective at least two current signals supplied to each of the at least two subgroups of light-emitting semiconductor devices. a plurality of light-emitting semiconductor devices (106a, 106b), the plurality of light-emitting semiconductor devices being configured to together emit a beam of light having a beam width and a peak intensity, wherein the plurality of light-emitting semiconductor devices are separated into at least two subgroups; a plurality of optics (108a, 108b), wherein the plurality of optics are a plurality of lenses, and wherein the plurality of optics are separated into at least two subgroups, and wherein the plurality of optics are arranged relative to the plurality of light-emitting semiconductor devices such that each one of the plurality of light-emitting semiconductor devices of a first subgroup of the at least two subgroups is located at a focal point of a respective optic of a first subgroup of the plurality of optics, and such that each one of the plurality of light-emitting semiconductor devices of a second subgroup of the at least two subgroups is located at a focal point of a respective optic of a second subgroup of the plurality of optics, and wherein the optical properties of the first subgroup of the plurality of optics are different to the optical properties of the second subgroup of the plurality of optics; and a controller module configured to control at least two current signals supplied from a power source to each of the at least two subgroups of light-emitting semiconductor devices, respectively, wherein the controller module is configured to modify the beam width and the peak intensity of the emitted beam of light by varying the magnitude of the respective at least two current signals supplied to each of the at least two subgroups of light-emitting semiconductor devices.