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 electronic device including a casing, a circuit board, a bracket, an antenna, and a protective member is provided. The casing has an accommodating space and a hole communicating with the accommodating space. The circuit board is disposed in the accommodating space. The bracket is disposed above the circuit board, and at least part of the bracket is located in the accommodating space and the hole. At least part of the antenna is disposed on a portion of the bracket extending out of the accommodating space. The protective member is disposed on at least one surface of the casing and covers the hole, the bracket, and the antenna.

Abstract: An electronic device including a casing, a circuit board and a dipole antenna structure is provided. The circuit board is disposed in the casing and includes a ground end. The dipole antenna structure is disposed in the casing and includes a feeding end, a first radiator and a second radiator. The first radiator is connected to the feeding end, and the second radiator is connected to the ground end. The first radiator and the second radiator are mirror symmetrical to each other with respect to the feeding end. A length of a short side of the circuit board is less than a length of the first radiator, and the length of the short side of the circuit board is less than a length of the second radiator.

Abstract: A multi-band antenna includes a conductive cap, a ground plane element, a supporting frame, a first radiating conductive element, a second radiating conductive element, a third radiating conductive element, and a plurality of conductive pieces. The multi-band antenna of the disclosure makes the radiating conductive element contact with the conductive cap physically via the conductive piece. Therefore, although a gap similar to a slot is formed, the resonant mode of the multi-band antenna is not excited via the slot.

Abstract: A multi-band antenna includes a conductive cap, a ground plane element, a supporting frame, a first radiating conductive element, a second radiating conductive element, a third radiating conductive element, and a plurality of conductive pieces. The multi-band antenna of the disclosure makes the radiating conductive element contact with the conductive cap physically via the conductive piece. Therefore, although a gap similar to a slot is formed, the resonant mode of the multi-band antenna is not excited via the slot.

Abstract: A portable electronic device includes a detachable first casing, an antenna, and a first coupling element. The antenna is disposed in the detachable first casing, and the first coupling element is disposed at an inner wall of the detachable first casing. In addition, the first coupling element does not contact the antenna and overlaps the antenna in a vertical projection plane.

Abstract: A portable electronic device includes a detachable first casing, an antenna, and a first coupling element. The antenna is disposed in the detachable first casing, and the first coupling element is disposed at an inner wall of the detachable first casing. In addition, the first coupling element does not contact the antenna and overlaps the antenna in a vertical projection plane.