Abstract: An optical switch (100) includes a shell (40) forming an input port (10) and first and second output ports (50, 60) with an optical switching subassembly enclosed therein between the input port and the output ports. The optical switch subassembly includes two light transmitting blocks (21, 22) having surfaces spaced from and opposing each other. Two light transmitting liquid sections having a refractive index substantially identical to that of the blocks are movably retained between the surfaces. The liquid sections are spaced from each other forming an air section therebetween. A piezoelectric element (31) is in physical engagement with the liquid sections.

Abstract: An optical switch includes a casing in which a fixed first crystal element having a first surface and a moveable second crystal element sharing the same refracting index with the first crystal element and having a second surface corresponding to the first surface of the first crystal element are arranged. A driving device selectively drives the second crystal element to move relative to the first crystal element between a first position and a second position. In the first position, the second surface of the second crystal element abuts against the first surface of the first crystal element, to allow a light beam transmitting into the first crystal element to pass through the second crystal element without substantial reflection.

Abstract: An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22) and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. An annular outlet (221) is defined in the inner wall. The annular outlet communicates with the annular passage and with the heating space.

Abstract: An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22), and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. A plurality of evenly distributed outlets (221) is defined in the inner wall. Each outlet is defined at an acute angle relative to the annular passage.

Abstract: An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22) and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. An annular outlet (221) is defined in the inner wall. The annular outlet communicates with the annular passage and with the heating space.

Abstract: An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22), and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. A plurality of evenly distributed outlets (221) is defined in the inner wall. Each outlet is defined at an acute angle relative to the annular passage. Each outlet is progressively flared such that a cross-sectional area of the outlet at the heating space is greater than a cross-sectional area of the outlet at the annular passage.

Abstract: An air blowing tool includes a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22), and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and defines a heating space (23) for accommodating a package (3) to be heated. A plurality of evenly distributed outlets (221) is defined in the inner wall. Each outlet is defined at an acute angle relative to the annular passage.

Abstract: An air blowing tool comprises a connecting pipe (1) and an air blowing head (2). The air blowing head includes an inner wall (22), and an outer wall (21). An annular passage (24) is defined between the inner and outer walls. The inner wall encloses and forms a heating space (23) for placing a package (3) to be heated. A plurality of outlets (221) evenly defined in the inner wall. Each outlet is generally perpendicular to an adjoining portion of the annular passage, and generally perpendicular to an adjoining portion of the heating space.

Abstract: An optical switch includes a casing in which a fixed first crystal element having a first surface and a moveable second crystal element sharing the same refracting index with the first crystal element and having a second surface corresponding to the first surface of the first crystal element are arranged. A driving device selectively drives the second crystal element to move relative to the first crystal element between a first position and a second position. In the first position, the second surface of the second crystal element abuts against the first surface of the first crystal element, to allow a light beam transmitting into the first crystal element to pass through the second crystal element without substantial reflection.

Abstract: An optical switch (100) includes a shell (40) forming an input port (10) and first and second output ports (50, 60) with an optical switching subassembly enclosed therein between the input port and the output ports. The optical switch subassembly includes two light transmitting blocks (21, 22) having surfaces spaced from and opposing each other. Two light transmitting liquid sections having a refractive index substantially identical to that of the blocks are movably retained between the surfaces. The liquid sections are spaced from each other forming an air section therebetween. A piezoelectric element (31) is in physical engagement with the liquid sections.

Abstract: An optical switch (100) includes a first collimator (10), a second collimator (20), and an optical switching member (50), all encased in a shell (40). The first collimator retains an input fiber (1) and a first output fiber (2). The second collimator retains a second output fiber (3). The optical switching member includes a light-transmitting member (51), a piezoelectric actuator (30) and a reflector (52). When a controlling voltage is applied to the actuator, the actuator elongates and moves the reflector to block an optical signal from the input fiber to the second output fiber, and to reflect the signal to the first output fiber. When the controlling voltage is removed, the actuator moves the reflector out of the signal path, thus allowing the signal to go to the second output fiber.