Patent ID: 8585219

Claim:
A projection device, comprising: a case, having a guiding slot; a zoom lens module, disposed in the case and configured for projecting an image; a focus lever, disposed in the case and connected to the zoom lens module, the focus lever being perpendicular to a lengthening direction of a center axis of the zoom lens module and being configured for adjusting a focus length of the zoom lens module; and a linkage mechanism, comprising an adjusting rod, the adjusting rod having a connecting portion and a operating portion, the connecting portion being connected to the focus lever and configured for rotating relative to the focus lever and moving straightly along a lengthening direction of the focus lever, the adjusting rod penetrating a guiding slot of the case so that the operating portion extends out of the case and is configured for being controlled to move linearly relative to the case along a lengthening direction of the guiding slot.