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: An improved baggage barrow, of which the retaining handle is mounted on the upper ends of two lower segment rods; the retaining handle is slidably mounted with a movable fastening member; the fastening member has two ball-shaped retainers to mate with two corresponding round holes on the lower segment rods and the upper segment rods so as to fix the upper segment rods when pulled out in place; the baggage barrow can be reduced in size simply by lifting the fastening member to have the ball-shaped retainers disengaged from the round holes of the upper segment rods, and then the upper segment rods can automatically be retracted in the lower segment rods. The stub tube at the lower part of each of the lower segment rods has a bead, which provides a retaining and positioning function upon opening the carriage frame; the baggage barrow is simple in operation, and the barrow can stand steadily without falling down.