Laser projector with reduced optical elements and improved power efficiency

A laser projector comprising:

• a light combining device configured to emit an illumination beam, the light combining device comprising:
• a laser light source configured to provide a first light beam on a first optical path;
• a dichroic mirror having a first surface and a second surface, the dichroic mirror being disposed on the first optical path, the first surface reflecting a first portion of the first light beam, a second portion of the first light beam penetrating the dichroic mirror;
• only a single reflecting mirror disposed on the first optical path, and configured to reflect the second portion of the first light beam to the second surface of the dichroic mirror, the second surface of the dichroic mirror reflecting the second portion to a second optical path;
• and
• a wavelength converter configured to receive the first portion of the first light beam reflected from the first surface and to emit a second light beam to the second optical path, the second light beam penetrating the dichroic mirror;
• wherein:
• the dichroic mirror is disposed between the laser light source and the reflecting mirror;
• the dichroic mirror, the laser light source and the reflecting mirror are aligned in a straight line;
• the second portion of the first light beam sequentially penetrates the dichroic mirror, being reflected by the reflecting mirror and being reflected by the dichroic mirror to the second optical path;
• and
• the second portion of the first light beam and the second light beam form the illumination beam on the second optical path;
• a light splitting system disposed on the second optical path, and configured to receive the illumination beam to generate a plurality of color beams;
• a plurality of light valves configured to receive and modulate the plurality of color beams to generate modulated color beams;
• and
• a beam combiner configured to combine the modulated color beams to form a multi-color image.