Optical system

An optical system, comprising:

• a first optical module, configured to drive an optical assembly to move, and the first optical module includes:
• a first movable part, configured to connected an optical element;
• a first fixed part, wherein the first movable part is movable relative to the first fixed part;
• a first driving assembly, configured to drive the first movable part to move relative to the first fixed part;
• a guide assembly, configured to guide the first movable part to move in a first dimension;
• and
• a first pressure assembly, generating a first pre-load on the first movable part, wherein the first movable part is stably and movably connected to the guide assembly via the first pre-load, and the first pressure assembly comprises:
• a first magnetic element, having an elongated structure;
• and
• a second magnetic element, corresponding to the first magnetic element to generate the first pre-load.