A projection structure that occupies a small space and performs dynamic projection includes a first support, a lens assembly, a film portion, a light source, a motor, a control portion, and a second support, wherein the light source, the film portion, and the lens assembly form a projection light path, the film portion being driven by the motor to rotate. The lens assembly includes at least one lens, and the at least one lens is accommodated in the first support, the control portion being configured to control the motor and/or the light source. The second support is configured to support the first support, wherein the first support and second support are respectively configured to form a first space and a second space of the film portion.

An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.

An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.

An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

An optical module, including a first frame, a second frames, an optical element, a first driving module, and a second driving module, is provided. The first frame is connected to a base. The second frame is connected to and located in the first frame. The optical element is disposed in the second frame. The first driving module is disposed between the base and the first frame to drive the first frame to oscillate around a first rotating axis. The second driving module is disposed between the first and second frames to drive the second frame to oscillate around a second rotating axis. The first and second rotating axes are perpendicular to an optical axis of the optical element, and not parallel. An overall dimension of the second driving module is less than that of the first driving module. A projection device having the optical module is also provided.

An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.

An optical module and a projector having the optical module are provided. The optical module includes a bracket, a driving component, an optical component, and a light guide element. The optical component is movably disposed on the bracket and is located on a transmission path of an image beam. The driving component is disposed between the bracket and the optical component and is configured to drive the optical component to oscillate. The light guide element is disposed at the bracket and located on the transmission path of the image beam. Here, the assembly of the optical module and the projector is easy, and the assembly yield is high.

A projection device according to an aspect of the present invention is a projection device for use at a construction site, and includes: a projector that projects an image onto a projection plane; a distance meter that measures a distance to the projection plane; a rotation driver that rotates the projector and the distance meter; an angle sensor that measures a rotation angle of the rotation driver; and a data processor that corrects the image that is projected from the projector. At least one of the distance meter or the projector is offset from a center line of a rotation axis of the rotation driver. The data processor corrects the image by using the distance measured by the distance meter and the rotation angle measured by the angle sensor.