Projection device comprising - at least one first laser device (12 B1) for emitting a first radiation having a first direction of polarization (s; p); and - at least one second laser device (12 B2) for emitting a second radiation having the first direction of polarization (s; p); wherein the first laser device (12 B1) and the second laser device (12 B2) are arranged opposite one another and wherein the projection device furthermore comprises: - a prism arranged between the first laser device (12 B1) and the second laser device (12 B2) and having a first boundary surface facing the first laser device (12 B1) and a second boundary surface facing the second laser device (12 B2), wherein at least one polarization-dependent mirror device (18 B) is arranged in the prism and is designed in such a way that radiation having the first direction of polarization (s; p) is reflected after impinging on the polarization-dependent mirror device (18 B), wherein the polarization-dependent mirror device (18 B) is arranged between the first laser device (12 B1) and the second laser device (12 B2) in such a way that the first radiation and the second radiation run oppositely to one another after reflection at the polarization-dependent mirror device (18 B); - at least one polarization modification device wherein the polarization modification device is designed to modify the direction of polarization (s; p) of radiation in such a way that it passes through the polarization-dependent mirror device (18 B) without reflection; and - at least one further mirror device; wherein the polarization modification device and the further mirror device are arranged in the beam path of the first radiation after a first and before a second impingement on the polarization-dependent mirror device (18 B), characterized in that the first boundary surface of the prism forms a predefinable angle not equal to 90° with the optical axis of the first laser device (12 B1) and the second boundary surface of the prism runs parallel to the first boundary surface, the prism has a third boundary surface, which faces the polarization modification device and the further mirror device, and also a fourth boundary surface which constitutes the output of the projection device, wherein a first predefinable plane is defined by the extension direction of the polarization modification device and of the further mirror device, wherein a second predefinable plane is defined by the third boundary surface, wherein the first predefinable plane and the second predefinable plane are chosen in such a way that the third boundary surface and the fourth boundary surface are not arranged perpendicularly to the first boundary srrface and the second boundary surface and that the first radiation emerging from the prism in the direction of the further mirror device and the second radiation reflected back by the further mirror device run perpendicularly to the optical axis of the first laser device (12 B1) and of the second laser device (12 B2) before entering into the prism. - at least one first laser device (12 B1) for emitting a first radiation having a first direction of polarization (s; p); and - at least one second laser device (12 B2) for emitting a second radiation having the first direction of polarization (s; p); - a prism arranged between the first laser device (12 B1) and the second laser device (12 B2) and having a first boundary surface facing the first laser device (12 B1) and a second boundary surface facing the second laser device (12 B2), wherein at least one polarization-dependent mirror device (18 B) is arranged in the prism and is designed in such a way that radiation having the first direction of polarization (s; p) is reflected after impinging on the polarization-dependent mirror device (18 B), wherein the polarization-dependent mirror device (18 B) is arranged between the first laser device (12 B1) and the second laser device (12 B2) in such a way that the first radiation and the second radiation run oppositely to one another after reflection at the polarization-dependent mirror device (18 B); - at least one polarization modification device wherein the polarization modification device is designed to modify the direction of polarization (s; p) of radiation in such a way that it passes through the polarization-dependent mirror device (18 B) without reflection; and - at least one further mirror device;