Transmitter device for an optical detection apparatus of a motor vehicle, designed to scan a surround region of the motor vehicle by means of a light beam and comprising a light source for emitting the light beam and a deflection unit, wherein the deflection unit is designed to deflect the light beam transmitted from the light source to the deflection unit at different scanning angles (α), wherein the deflection unit comprises a free-form mirror, wherein the free-form mirror comprises at least two surface elements (20a, 20b) with different angles of inclination (21a, 21b) and said free-form mirror is designed to reflect the light beam at predetermined target values (-α3, -α2, -α1, α0, +α1, +α2, +α3) for the scanning angles (α) that correspond to the angles of inclination (21a, 21b), for the purposes of generating a predetermined target field of view of the transmitter device, wherein the deflection unit comprises in addition to the free-form mirror a pivotable mirror which is designed to reflect the light beam transmitted from the light source to the pivotable mirror at actual values (-α3', -α2', -α1', α0', +α1', +α2', +α3') for the scanning angle (α) that correspond to pivot angles of the pivotable mirror, wherein the free-form mirror is designed to compensate a deviation between the actual value (-α3', -α2', -α1', α0', +α1', +α2', +α3') provided by the pivotable mirror and the target value (-α3, -α2, -α1, α0, +α1, +α2, +α3) for the scanning angle (α), for the purposes of generating the target field of view, wherein the pivotable mirror is designed as a micromirror actuator with a plane surface and a surface of the free-form mirror formed by the surface elements (20a, 20b) of the free-form mirror has, at least in regions, an arched form, wherein the angles of inclination (21a, 21b) of the respective surface elements (20a, 20b) of the free-form mirror are specified on the basis of the pivot angles of the pivotable mirror, and wherein the pivotable mirror has a characteristic transfer function which as a function of the pivot angles of the pivotable mirror describes a distortion of an actual field of view generated by the pivotable mirror in relation to the target field of view, and the angles of inclination (21a, 21b) of the surface elements (20a, 20b) of the free-form mirror are determined in such a way that the free-form mirror exhibits an inverse of the characteristic transfer function. the deflection unit comprises a free-form mirror, wherein the free-form mirror comprises at least two surface elements (20a, 20b) with different angles of inclination (21a, 21b) and said free-form mirror is designed to reflect the light beam at predetermined target values (-α3, -α2, -α1, α0, +α1, +α2, +α3) for the scanning angles (α) that correspond to the angles of inclination (21a, 21b), for the purposes of generating a predetermined target field of view of the transmitter device, wherein the deflection unit comprises in addition to the free-form mirror a pivotable mirror which is designed to reflect the light beam transmitted from the light source to the pivotable mirror at actual values (-α3', -α2', -α1', α0', +α1', +α2', +α3') for the scanning angle (α) that correspond to pivot angles of the pivotable mirror, wherein the free-form mirror is designed to compensate a deviation between the actual value (-α3', -α2', -α1', α0', +α1', +α2', +α3') provided by the pivotable mirror and the target value (-α3, -α2, -α1, α0, +α1, +α2, +α3) for the scanning angle (α), for the purposes of generating the target field of view, wherein the pivotable mirror is designed as a micromirror actuator with a plane surface and a surface of the free-form mirror formed by the surface elements (20a, 20b) of the free-form mirror has, at least in regions, an arched form, wherein the angles of inclination (21a, 21b) of the respective surface elements (20a, 20b) of the free-form mirror are specified on the basis of the pivot angles of the pivotable mirror, and wherein the pivotable mirror has a characteristic transfer function which as a function of the pivot angles of the pivotable mirror describes a distortion of an actual field of view generated by the pivotable mirror in relation to the target field of view, and the angles of inclination (21a, 21b) of the surface elements (20a, 20b) of the free-form mirror are determined in such a way that the free-form mirror exhibits an inverse of the characteristic transfer function.