Optical system

An optical system, comprising:

• a first optical module used for changing the direction of light emitted from a light source;
• a second optical module corresponding to the first optical module and used for changing the direction of the light, wherein the direction of the light exit the first optical module is different from the direction of the light exit the second optical module, and the second optical module is disposed immediately downstream of the first optical module, wherein the second optical module comprises:
• a fixed portion;
• a movable portion being movable relative to the fixed portion;
• a driving assembly, comprising:
• a first driving portion disposed on one side of the fixed portion and the movable portion, and comprises a first magnetic element;
• and
• a second driving portion disposed on another side of the fixed portion and the movable portion, and comprises a second magnetic element;
• and
• a support assembly, comprising an intermediate element passing through the first magnetic element and the second magnetic element;
• a third optical module used for adjusting the light;
• and
• a fourth optical module used for changing the direction of the light,
• wherein the light passes through each of the third optical module, the fourth optical module, the first optical module, and the second optical module exactly once in sequence, and then exits from the optical system.