Patent ID: 8425057

Claim:
A projection module adapted to be disposed in an electronic device, the projection module comprising: a chassis; a light source, disposed on the chassis; a light valve, disposed on the chassis; a first lens group, fixed on the chassis; a second lens group, slidably assembled on the chassis and disposed between the light valve and the first lens group, wherein the chassis comprises: a body; a first sleeve, fixed to the body, and the first lens group being fixed in the first sleeve; and a second sleeve, the second lens group being fixed in the second sleeve, the body having a sliding slot, and the second sleeve being slidably disposed in the sliding slot; a guiding rod, fixed in the sliding slot; and a sliding block, fixed to the second sleeve and linearly coupled to the guiding rod for sliding along the guiding rod, and wherein the light source is capable of providing a light beam, and the light beam is capable of emitting through the light valve, the second lens group, and the first lens group in sequence.