Patent ID: 9304323
Filing Date: 2016-04-05
CPC Classification: G02B,G03B,H04N

Claim Text:
1. A projection device comprising: at least one first laser device for emitting a first radiation having a first direction of polarization; and at least one second laser device for emitting a second radiation having the first direction of polarization; wherein the first laser device and the second laser device are arranged opposite one another, wherein the projection device further comprises: a prism arranged between the first laser device and the second laser device and having a first boundary surface facing the first laser device and a second boundary surface facing the second laser device, wherein at least one polarization-dependent mirror device 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, wherein the polarization-dependent mirror device is arranged between the first laser device and the second laser device 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; at least one polarization modification device wherein the polarization modification device is designed to modify the direction of polarization of radiation in such a way that it passes through the polarization-dependent mirror device 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 second radiation after a first and before a second impingement on the polarization-dependent mirror device, wherein the first boundary surface of the prism forms a predefinable angle not equal to 90° with the optical axis of the first laser device and the second boundary surface of the prism runs parallel to the first boundary surface.