Patent ID: 8246174

Claim:
A projector comprising: a projector body comprising a front panel and two sidewalls connected to opposite ends of the front panel, the front panel defining a first though hole; a lens module comprising a lens body, a lens extending from the lens body, a sliding bracket, and a plurality of parallel poles having same lengths, the lens body rotatably mounted to a front of the projector body and between the sidewalls of the projector body, the lens extending through the first through hole of the projector body, first ends of the plurality of poles rotatably connected to the lens body, second ends of the plurality of poles rotatably connected to the sliding bracket; and a base rack rotatably mounted on a rear of the projector body, wherein the sliding bracket is slidably mounted on the base rack and is operable to be positioned in different positions of the base rack, wherein a height of the lens is operable to be adjusted by changing the positions of the sliding bracket on the base rack.