Patent ID: 8491126

Claim:
A projector comprising: an optical module comprising a first connecting portion with an opening; a lens comprising a first lens group and a second lens group, the first lens group comprising a second connecting portion and a third connecting portion, the second lens group comprising a fixing portion and a protrusion portion, the protrusion portion protruding from the fixing portion, and the fixing portion being fixed to the third connecting portion; and a ring-shaped heat conducting member comprising a hole; wherein the protrusion portion of the second lens group is inserted into the hole of the ring-shaped heat conducting member such that the ring-shaped heat conducting member is disposed on the fixing portion and that the second lens group is disposed between the first lens group and the ring-shaped heat conducting member, the protrusion portion is then inserted into the opening of the optical module, the second connecting portion is connected to the first connecting portion, and the ring-shaped heat conducting member is disposed between the optical module and the lens and contacts the first connecting portion of the optical module, for conducting heat from the lens to the optical module.