Abstract: An optical system is provided. The optical system is used for disposing on an electronic device. The optical system includes a movable portion, a fixed portion, a first driving assembly, and a support module. The movable portion is used for connecting to an optical module. The fixed portion is affixed on the electronic device, and the movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the movable portion to move relative to the fixed portion. The movable portion is movably connected to the fixed portion through the support module.

Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a first movable portion, a fixed portion, a first driving assembly, and a first guiding assembly. The first movable portion is used for connecting to a first optical element driving mechanism. The first optical element driving mechanism has a main axis that extends in a first direction. The first movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the first movable portion to move relative to the fixed portion. The first guiding assembly is used for guiding the movement of the fixed portion relative to the fixed portion.

Abstract: A length-adjustable cigar tube, comprises a tube body having a hollow center for receiving at least one cigar; the tube body being a round cylinder; one end of the tube body having an opening and other portion of the tube is sealed; an upper edge of the tube body having a flange and a recess on an outer side of the tube body and being below the flange; a cover being a tubular structure and having a cylindrical shape; the cover having a hollow interior; the hollow interior of the cover being formed with three shallow trenches; the cover being made of plastics; an inner diameter of the cover being slightly greater than an outer diameter of the tube body so that the tube body can be received into the cover tightly and the flange of the tube body being matched to one of the three trenches of the cover.