Projection device

Abstract

A projection device includes an illumination system providing an illumination light beam; an optical engine module disposed on a transmission path of the illumination light beam, and converting the illumination light beam into an image light beam; a lens module disposed on a transmission path of the image light beam, and projecting the image light beam out of the projection device; and an adjustment module including a moving plate, a guide element, a gearing element, and a driving element. The moving plate is disposed on the guide element. The guide element is connected to the gearing element. The driving element is configured to drive the gearing element, such that the guide element is linked with the moving plate to move between a first position and a second position. The illumination system, the optical engine module, and the lens module are disposed on the moving plate.

Dependencies are inferred from the claim text.