Optical module and projector
AssigneeCoretronic Corporation
InventorWei-Hao Chen
Life of this patent
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Abstract
An optical module including a base and a rotating structure is provided. The rotating structure includes a frame and an optical element. The frame has at least one shaft portion. The frame is connected to the base through the shaft portion, and is configured to oscillate relative to the base along a rotation axis by taking the shaft portion as a rotating shaft. The optical element is disposed within the frame. The rotation axis passes through a center of gravity of the rotating structure. In addition, a projector having the optical module is also provided. The invention can prevent the rotating structure of the optical module from having an excessive rotational inertia.
Claims22
An optical module, comprising a base and a rotating structure, wherein:
- the rotating structure comprises a frame, a first driving element and an optical element, wherein:
- the frame has at least one shaft portion, wherein the frame is connected to the base through the at least one shaft portion, and is configured to oscillate relative to the base along a rotation axis by taking the at least one shaft portion as a rotating shaft;
- the first driving element is disposed on the frame, wherein the first driving element is disposed asymmetrically to the rotation axis;
- and
- the optical element is disposed within the frame,
- wherein the rotation axis passes through a center of gravity of the rotating structure, and the rotation axis passes through the optical element and does not pass through a geometric center of the optical element.
A projector, comprising a light source, a light valve, a projection lens and an optical module, wherein:
- the light source is configured to provide an illumination beam;
- the light valve is configured to convert the illumination beam into an image beam;
- the projection lens is configured to project the image beam out of the projector;
- and
- the optical module is disposed between the light valve and the projection lens and comprises a base and a rotating structure, wherein:
- the rotating structure comprises a frame, a first driving element and an optical element, wherein:
- the frame has at least one shaft portion, wherein the frame is connected to the base through the at least one shaft portion, and is configured to oscillate relative to the base along a rotation axis by taking the at least one shaft portion as a rotating shaft;
- the first driving element is disposed on the frame, wherein the first driving element is disposed asymmetrically to the rotation axis;
- and
- the optical element is disposed within the frame and located on a transmission path of the image beam,
- wherein the rotation axis passes through a center of gravity of the rotating structure, and the rotation axis passes through the optical element and does not pass through a geometric center of the optical element.
Dependencies are inferred from the claim text.