Vehicle display systems and methods with multifunction holographic RLAD devices

A motor vehicle, comprising:

• a vehicle body including a passenger compartment and a vehicle windshield;
• a plurality of road wheels attached to the vehicle body;
• and
• a holographic projection display system mounted inside the passenger compartment, the holographic projection display system including:
• a cluster of lighting elements arranged in a fixed light array, the cluster of lighting elements including multiple first light diodes of a first light wavelength and each having a respective first emission angle towards the vehicle windshield, and multiple second light diodes of a second light wavelength, distinct from the first wavelength, and each having a respective second emission angle towards the windshield, the first emission angles of the first light diodes being distinct from one another, and the second emission angles of the second light diodes being distinct from one another;
• and
• a multilayer holographic optical element (HOE) assembly attached to the cluster of lighting elements forward of the first and second light diodes, the multilayer HOE assembly including a first holographic panel stacked on and mounted to a second holographic panel, the first holographic panel being recorded with multiple first holographic patterns each optically configured to diffract only the first light wavelength of the first light diodes emitted at one or more of the respective first emission angles, and the second holographic panel being recorded with multiple second holographic patterns each optically configured to diffract only the second light wavelength of the second light diodes emitted at one or more of the respective second emission angles.

A method of assembling a holographic projection display system for projecting images onto a reflective surface, the method comprising:

• arranging a cluster of lighting elements in a predefined pattern, the cluster of lighting elements including:
• a plurality of first light diodes of a first light wavelength and each having a respective first emission angle towards the reflective surface, and
• a plurality of second light diodes of a second light wavelength and each having a respective second emission angle towards the reflective surface;
• and
• attaching a multilayer holographic optical element (HOE) assembly to the cluster of lighting elements forward of the pluralities of first and second light diodes, the multilayer HOE assembly including:
• a first holographic panel recorded with a plurality of first holographic patterns each optically configured to diffract the first light wavelength of the first light diodes emitted at one or more of the respective first emission angles, and
• a second holographic panel attached to the first holographic panel, the second holographic panel recorded with a plurality of second holographic patterns each optically configured to diffract the second light wavelength of the second light diodes emitted at one or more of the respective second emission angles.