Abstract: A stereoscopic image display device is for use with shutter glasses having left and right shutter lenses and includes a display processor, a display screen, a signal generator, and a signal transmitter. The display processor is for receiving a video input signal and outputting a video output signal sequence according to a frame sync signal acquired from the video input signal. The display screen is for receiving the video output signal sequence corresponding to a sequence of left-eye and right-eye images and displays the left-eye and right-eye images in an alternating manner according to the frame sync signal. The signal generator is for generating a shutter sync control signal that is transmitted to the shutter glasses by the signal transmitter for controlling duty cycles of alternating operations of the shutter glasses according to the frame sync signal.

Abstract: A linear actuator includes two spaced seats connecting by a center piezoelectric member. The seats are mounted in a rail frame. Each seat has a piezoelectric member and an elastic zone for engaging or disengaging with the rail frame. Through energizing and disenergizing the center piezoelectric member alternately, the center piezoelectric member may be extended or contracted alternately, and thus moves the seats, consequently the actuator, longitudinally along the rail frame. A linear and accurate movement of the actuator thus may be achieved at micro meter level.

Abstract: Disclosed is a micro-positioning flatbed comprising a bed; a first driving unit and a second driving unit of resilient construction; a piezo-electric element firmly coupling the first and the second driving units; and piezo-electric elements firmly received within the first and the second driving units, wherein the bed is formed with corresponding, extending guides, the first and the second driving units include opposing sides having configurations corresponding to configurations of the guides, and the first and the second driving units are aligned within the guides of the bed, whereby the piezo-electric elements expand or contract while being subjected to voltages to cause lateral expansion or contraction of the first and the second driving units in response to expansion or construction of the piezo-electric elements firmly received within the first and the second driving units, such that the piezo-electric elements firmly coupled to the first and the second driving units activate the first and the second dr