Arrangement for illuminating an image plane

The invention relates to an arrangement for the homogeneous illumination of an image plane, preferably for use in a head-up display in a motor vehicle, comprising an illumination optical system (1) consisting of an array of emitters with a wide emission characteristic, such as an array of light emitting diodes ( LED, OLED), an integrator array (2) and an imaging element (5), wherein the optical axis of a radiator (A1, A2, A3, A4) of the mechanical axis of an integrator of the integrator array (2) is assigned. According to the invention for the purpose of achieving an angular homogeneity of the integrator array (2) on the illuminated area (7) of the imaging element (5) emerging rays (6) at the light output of the integrator arrays (2) at least two microlens arrays (3, 4, 3a, 4a, 13, 14).