Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A rolling device, a package for rolling device and a rolling module are introduced. The rolling device includes a receiving seat defining a receiving recess, at least one secondary rolling member received in the receiving recess to contact with a surface of the receiving recess, a primary rolling member partially received in the receiving recess to contact with a surface of the at least one secondary rolling member, a coupling section connected to the receiving seat for coupling to an external object, and a stop section connected to the receiving seat and defining a stop opening, which has a size smaller than a maximum size of the primary rolling member.

Abstract: A rolling device, a package for rolling device and a rolling module are introduced. The rolling device includes a receiving seat defining a receiving recess, at least one secondary rolling member received in the receiving recess to contact with a surface of the receiving recess, a primary rolling member partially received in the receiving recess to contact with a surface of the at least one secondary rolling member, a coupling section connected to the receiving seat for coupling to an external object, and a stop section connected to the receiving seat and defining a stop opening, which has a size smaller than a maximum size of the primary rolling member.