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 adjustable stand for electronic devices mainly adapted to eliminate limitation on viewing angle adjustment of conventional adjustable stands is provided. The adjustable stand includes a main body, a first support frame, a second support frame, a pivot, and a sleeve. The pivot passes through and positions each of the components. A pressing portion on the pivot is used to operate the pivot and controls the movement of the pivot. Thus, a supporting angle of the first support frame and the second frame can be adjusted freely to create various viewing angles, such that the viewing angle adjustment can be adapted for different conditions and requirements diversely.

Abstract: An adjustable stand for electronic devices mainly adapted to eliminate limitation on viewing angle adjustment of conventional adjustable stands is provided. The adjustable stand includes a main body, a first support frame, a second support frame, a pivot, and a sleeve. The pivot passes through and positions each of the components. A pressing portion on the pivot is used to operate the pivot and controls the movement of the pivot. Thus, a supporting angle of the first support frame and the second frame can be adjusted freely to create various viewing angles, such that the viewing angle adjustment can be adapted for different conditions and requirements diversely.