Patent ID: 7869109

Claim:
A portable projector comprising: a light transmission member having a first surface and a second surface opposing to the first surface; a multi-type laser light source for emitting light beams onto the first surface of the member based on an external image signal, so as to allow the light beams to be transmitted into the member, the multi-type laser light source including a plurality of sub laser light sources; one or more optical elements supported on at least one of the first and second surfaces of the member for diffracting and reflecting the light beams incident from the multi-type laser light source into the member; and at least one multi-type scan mirror supported on one of the first and second surfaces of the member for scanning the light beams diffracted and reflected from the optical elements onto an external screen located at the outside of the member based on an external control signal, wherein the one or more optical elements and the at least one multi-type scan mirror are in contact with at least one of the first and second surfaces of the light transmission member, and the optical elements, which are in contact with the first surface of the light transmission member, are aligned alternately with the optical elements, which are in contact with the second surface of the light transmission member.