Abstract: An image photographing system for viewing 3D images with naked eyes and using method thereof, including an L-shaped frame (1), wherein, a top end of a vertical portion of the L-shaped frame successively at equal intervals providing with: an intermediate photographing mechanism, a left photographing mechanism and a right photographing mechanism, a left driving mechanism and a right driving mechanism, a guide post, a vertical driving servo motor, a driving lead screw; a support plate drives the left driving mechanism and the right driving mechanism to move up and down by moving up and down along the guide post under the drive of the driving lead screw, so as to drive the left photographing mechanism or the right photographing mechanism to swing up and down. The present invention can see the realistic and natural 3D images with naked eyes.

Abstract: A holographic photographing system, a holographic display system, a stereoscopic photographing system and a display method are provided. M photographing devices are distributed on a same circumference at equal intervals, and an included angle between two adjacent photographing devices to a center of circle is 360/m. At a top end of a vertical portion of an L-shaped frame, each of the photographing devices is at equal intervals provided with: an intermediate photographing mechanism, a left photographing mechanism and a right photographing mechanism, a left driving servo motor and a right driving servo motor, a guide post and a vertical driving servo motor, and a driving lead screw connected to a driving shaft. The support plate moves up and down along the guide post to drive the left driving mechanism and the right driving mechanism to move up and down.

Abstract: A three-coordinate mapper, comprising a U-shaped chassis (11) which is formed by successively connecting a front cross-frame, a connecting frame and a rear cross-frame; a square front panel (12); a servo motor (13); a lead screw (14); one ends of four connecting rods (17) are hinged on a periphery of the nut (15); the other end of each of the four connecting rods (17) is hinged to one end of a support rod (18); a driven laser pointer (20) and a left camera (21), a right camera (22), an upper camera (23), and a lower camera (24); an intermediate camera (25) and a driving laser pointer (26); and, a plurality of auxiliary laser pointers (27). The three-coordinate mapper and the mapping method has high measurement precision and fast measurement speed.

Abstract: An image photographing system for viewing 3D images with naked eyes and using method thereof, including an L-shaped frame (1), wherein, a top end of a vertical portion of the L-shaped frame successively at equal intervals providing with: an intermediate photographing mechanism, a left photographing mechanism and a right photographing mechanism, a left driving mechanism and a right driving mechanism, a guide post, a vertical driving servo motor, a driving lead screw; a support plate drives the left driving mechanism and the right driving mechanism to move up and down by moving up and down along the guide post under the drive of the driving lead screw, so as to drive the left photographing mechanism or the right photographing mechanism to swing up and down. The present invention can see the realistic and natural 3D images with naked eyes.

Abstract: A three-coordinate mapper, comprising a U-shaped chassis (11) which is formed by successively connecting a front cross-frame, a connecting frame and a rear cross-frame; a square front panel (12); a servo motor (13); a lead screw (14); one ends of four connecting rods (17) are hinged on a periphery of the nut (15); the other end of each of the four connecting rods (17) is hinged to one end of a support rod (18); a driven laser pointer (20) and a left camera (21), a right camera (22), an upper camera (23), and a lower camera (24); an intermediate camera (25) and a driving laser pointer (26); and, a plurality of auxiliary laser pointers (27). The three-coordinate mapper and the mapping method has high measurement precision and fast measurement speed.

Abstract: A holographic photographing system, a holographic display system, a stereoscopic photographing system and a display method are provided. M photographing devices are distributed on a same circumference at equal intervals, and an included angle between two adjacent photographing devices to a center of circle is 360/m. At a top end of a vertical portion of an L-shaped frame, each of the photographing devices is at equal intervals provided with: an intermediate photographing mechanism, a left photographing mechanism and a right photographing mechanism, a left driving servo motor and a right driving servo motor, a guide post and a vertical driving servo motor, and a driving lead screw connected to a driving shaft. The support plate moves up and down along the guide post to drive the left driving mechanism and the right driving mechanism to move up and down.

Abstract: A cooling or heating fluid circulation system of a cantilevered centrifugal pump, comprises a pump shaft, one end of which is connected with a vane wheel, a shaft sleeve sleeved on the periphery of the pump shaft, a left sealing gland and a right sealing gland, which are sleeved on the periphery of the shaft sleeve, are connected in sequence from one side of the vane wheel along the axial direction of the shaft sleeve; the gap between the left sealing gland and the said shaft sleeve is arranged with an inside rotating sealing ring fixed with the shaft sleeve and an inside stationary sealing ring fixed with the left sealing gland, an outside rotating sealing ring fixed with the shaft sleeve and an outside stationary sealing ring fixed with the right sealing gland are arranged in the gap between the right sealing gland and the shaft sleeve and away from the left sealing gland; a flow-restricted ring is arranged between the inner peripheral surface of the right sealing gland and the shaft sleeve; and a heat exch