The invention relates to a lighting device (1) for a motor vehicle headlight, comprising a light module (2) with at least one light emission source (10), a primary lens (100) and a secondary lens (300), wherein said primary lens (100) comprises at least one light-conducting ancillary lens (102) which is designed to direct light (50) captured by the at least one light emission source (10) through at least one light-emitting surface (103) of the ancillary lens and on to the secondary lens (300) arranged downstream in optical longitudinal axial direction (150), and wherein the secondary lens (300) is designed to image a light distribution, which forms on the light-emitting surface (103) of the ancillary lens, in an area in front of the lighting device (1). At least one light-guiding shield (200) for shading a light color fringe (250) is arranged between the primary lens (100) and the secondary lens (300), wherein the at least one light-guiding shield (200, 201, 202) forms an optically active first aperture edge (221) for a lower light color fringe (252) and an optically active second aperture edge (222) for an upper light color fringe (251), and the optically active aperture edges (220, 221, 222) are each arranged in such a manner in the light beam (50) that blue defining light beams (51) of the light color fringe (250, 251, 252) can be selectively shaded.