Head mounted display and multiple depth imaging apparatus

A head mounted display, comprising:

• a housing;
• and
• at least one imaging apparatus, disposed in the housing;
• wherein the imaging apparatus comprising:
• a beam splitting device, having a first reflective surface, a second reflective surface, and a transmissive surface integrated as a single piece beam splitting device;
• a first display, configured to project a first image to the first reflective surface;
• a second display, configured to project a second image to the transmissive surface;
• a third display, configured to project a third image to the second reflective surface,
• wherein the first reflective surface reflects the first image to a target area, the second reflective surface reflects the third image to the target area, and the second image is projected to the target area through the transmissive surface;
• and
• a lens set, disposed between the beam splitting device and the target area,
• wherein the first image, the second image, and the third image are respectively imaged on a first imaging surface, a second imaging surface, and a third imaging surface, and distances between the first imaging surface, the second imaging surface, and the third imaging surface and the target area are different.