Display system and head mounted display using the same

A head mounted display, comprising:

• a frame;
• a display system, comprising:
• an optical integrated rod;
• a solid-state light-emitting device disposed on an entrance of the optical integrated rod for emitting light to the optical integrated rod;
• a first total internal reflection prism having a first surface, a second surface and a third surface, wherein the first surface is disposed adjacent to an exit of the optical integrated rod;
• a reflection mirror disposed on the second surface;
• a second total internal reflection prism having a fourth surface, a fifth surface and a sixth surface, wherein the fourth surface is in contact with the third surface by an air gap;
• a digital micromirror device disposed adjacent to the fifth surface;
• and
• an eyepiece disposed adjacent to the sixth surface,
• wherein the light is sequentially transmitted through the optical integrated rod, input from the first surface into the first total internal reflection prism, reflected by the third surface and the reflection mirror, and transmitted through the third surface, the fourth surface and the fifth surface so as to be input to the digital micromirror device along an illumination optical path, and then is sequentially reflected by the digital micromirror device, input from the fifth surface into the second total internal reflection prism, reflected by the fourth surface, and transmitted through the sixth surface and the eyepiece so as to be projected on a pupil surface along an imaging optical path;
• and
• a waveguide component overlapped with the pupil surface for guiding the light, wherein the differences between incident angles of imaging light are between ±15°,
• wherein the frame, the solid-state light-emitting device, the optical integrated rod, the first total internal reflection prism, the digital micromirror device, the second total internal reflection prism, the eyepiece and the waveguide component are sequentially disposed on a straight line.