| 摘要 |
PURPOSE: An apparatus for adjusting the focus of a beam projector is provided to improve the quality of a screen displayed by a hand-held beam projector by enabling focusing adjustment of a miniaturized beam projector. CONSTITUTION: An apparatus for adjusting the focus of a beam projector comprises an adjusting member, a rotating member, and a link member, and a lens assembly. The adjusting member is installed in the housing(111) of the beam projector. The rotating member is installed in the housing to be rotated. The link member is extended from the rotating member. The lens assembly is installed inside the housing to move linearly. The link member circulates the rotating member as the adjusting member moves in straight line.
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