Optical engine module and near-eye display apparatus

A near-eye display apparatus, configured to be worn on a head of a user, comprising:

• a main body;
• and
• a first optical engine module and a second optical engine module, disposed on the main body, each of the first optical engine module and the second optical engine module comprising:
• a display panel, configured to emit a light beam;
• a transflective layer, disposed on one side of a display surface of the display panel, and configured to allow a portion of the light beam to pass through and reflect another portion of the light beam;
• a polarizing reflective layer, disposed on a side of the transflective layer away from the display panel, wherein the polarizing reflective layer is configured to allow the light beam having a first polarization state to pass through, and reflect the light beam having a second polarization state, the first polarization state is orthogonal to the second polarization state;
• a first bifocal lens, disposed between the transflective layer and the polarizing reflective layer, wherein the first bifocal lens has a first focal length for the light beam having the first polarization state and has a second focal length for the light beam having the second polarization state, the first focal length is different from the second focal length;
• a first electrically controlled half waveplate, disposed between the first bifocal lens and the transflective layer, wherein the first electrically controlled half waveplate is configured to switch a polarization state of the light beam between the first polarization state and the second polarization state or maintain the polarization state of the light beam;
• and
• a second electrically controlled half waveplate, disposed between the first bifocal lens and the polarizing reflective layer, wherein the second electrically controlled half waveplate is configured to switch the polarization state of the light beam between the first polarization state and the second polarization state or maintain the polarization state of the light beam.