Projection device

A projection device, comprises:

• an illumination system, configured to provide an illumination beam;
• a light valve, configured on the transmission path of the illumination beam and configured to convert the illumination beam into an image beam;
• a light guide element, configured on the transmission path of the image beam and located between the illumination system and the light valve;
• an optical module, configured on the transmission path of the image beam, and the optical module comprises:
• a fixed portion;
• a first frame body, pivoted to the fixed portion, wherein the first frame body comprises a first side and other three second sides;
• at least one first driving element, configured on at least one of the other three second sides of the first frame body and configured to drive the first frame body to oscillate back and forth;
• and
• an optical element, configured in the first frame body and configured to allow the image beam to pass;
• and
• a projection lens, configured on the transmission path of the image beam and configured to convert the image beam into a projection beam, wherein a first virtual plane of the projection lens intersects with a second virtual plane of the light valve to form a virtual line segment, wherein the distance between the first side of the first frame body and the virtual line segment is shorter than the distance between the other three second sides of the first frame body and the virtual line segment, and when oscillating, the optical element oscillates with the first frame body to enable the transmission path of the image beam to produce a displacement in a first direction.