Abstract: The present invention relates to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same, and more particularly, to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same which includes a disk-shaped outer body that receives power from the outside, an inner body that is coupled to the inside of the outer body, and at least one load cell formed between the outer body and the inner body.

Abstract: An actuator and an exercise equipment using the same are disclosed. The exercise equipment comprises a post which is a main body of the exercise equipment, a shoulder installed on an upper side of the post and rotates in left and right direction, an arm combined with the shoulder and rotates in up and down direction, a hand combined with one terminal of the arm and rotates by using the arm as an axis, a handle located on one terminal side of the hand, a force control actuator outputs a force corresponding to weight set by a user, and a wire passes via plural sheaves included in the hand, the shoulder and the post and deliver a force generated by pulling of the handle, one terminal of the wire being connected to the handle.

Abstract: Disclosed is an apparatus for measuring an exercise quantity. The apparatus for measuring the exercise quantity includes a base fixed to the exercise machine, a load cell mounted on the upper portion of the base to measure a force applied from the upper side, a load support connected to the upper portion of the load cell to press the load cell, a load support pulley coupled to the upper portion of the load support, a guide pulley disposed beside the load support pulley so that a rotational shaft is parallel to the load support pulley, and a rotation angle measuring sensor measuring a rotation angle according to the rotation of the load support pulley, in which the belt, the cable, the rope, or the chain crosses with the load support pulley and the guide pulley.

Abstract: The present invention relates to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same, and more particularly, to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same which includes a disk-shaped outer body that receives power from the outside, an inner body that is coupled to the inside of the outer body, and at least one load cell formed between the outer body and the inner body.

Abstract: An actuator and an exercise equipment using the same are disclosed. The exercise equipment comprises a post which is a main body of the exercise equipment, a shoulder installed on an upper side of the post and rotates in left and right direction, an arm combined with the shoulder and rotates in up and down direction, a hand combined with one terminal of the arm and rotates by using the arm as an axis, a handle located on one terminal side of the hand, a force control actuator outputs a force corresponding to weight set by a user, and a wire passes via plural sheaves included in the hand, the shoulder and the post and deliver a force generated by pulling of the handle, one terminal of the wire being connected to the handle.

Abstract: Disclosed herein is an interdigitation-type diffractive light modulator. In the interdigitation-type diffractive light modulator of the present invention, each of a pair of ribbons has a plurality of diffractive branches which are arranged in a comb shape, and the diffractive branches of the ribbons interdigitate with each other. Furthermore, the respective ribbons moves upwards and downwards or, alternatively, one ribbon moves upwards and downwards, so that the diffractive branches of the ribbons which interdigitate with each other form a stepped structure, thus diffracting incident light.

Abstract: An aspect of the present invention provides a device for inspecting an optical modulator. The device can comprise: a probe card that converts an inputted control signal to a driving signal, and provide the driving signal by contacting with each driving signal input pad of an optical modulator—wherein the optical modulator comprises one or more micromirrors and one or more driving signal input pads connected to the micromirrors, respectively, and the micromirror moves up and down according to the driving signal inputted through the driving signal input pad—; and an image control circuit that generates the control signal for checking if the optical modulator is operation properly, and is connected electrically to the probe card to transmit the control signal. A device and a method for inspecting an optical modulator according to the present invention can inspect performance and function of the optical modulator at a chip level.

Abstract: The present invention relates, in general, to a light modulator having a variable blaze diffraction grating and, more particularly, to a light modulator having a variable blaze diffraction grating, in which a diffraction member rotates due to piezoelectric force so as to incline a reflective surface.

Abstract: Disclosed herein is a cantilever-type PLC optical attenuator. The optical attenuator includes a base substrate made of silicon, an input waveguide, and output waveguide. Front portions of the upper and lower silicon substrates around the output waveguide are thinner than rear portions of the upper and lower silicon substrates around the output waveguide to provide a cantilever part having upper and lower cantilever substrate parts. A first electrode is provided on a bottom of the lower cantilever substrate part, and a second electrode is provided on the base substrate to electromagnetically correspond to the first electrode. When a voltage is applied between the first and second electrodes, the cantilever part moves up and down by an electromagnetic force, thus controlling the output light.

Abstract: Disclosed is a fishbone diffraction-type light modulator. In the fishbone diffraction-type light modulator, a lower micromirror is provided on a silicone substrate, and an upper micromirror is spaced apart from the silicone substrate and has a plurality of openings through both sides thereof. The upper micromirror and the lower micromirror deposited on the silicone substrate form pixels.

Abstract: Disclosed herein is a variable grating diffractive light modulator, which actuates lower reflecting plates of a lower reflecting array by a piezoelectric actuating method, and includes an upper reflecting array that is spaced apart from the lower reflecting array and attached to a lower surface of a substrate that is made of a light transmissive material and covers the lower reflecting array, so that the light modulator reflects incident light transmitted through the substrate and thereby produces diffractive light.

Abstract: The present invention relates to an actuator and optical attenuator using the actuator. The rotary-type comb-drive actuator includes a substrate, a movable electrode, a drive electrode, one or more vertical springs, one or more vertical spring anchors, a horizontal spring and a horizontal spring anchor. The movable electrode is arranged on a plane of the substrate to be movable in parallel to the substrate plane, and formed to have a predetermined length so as to have a comb-shaped electrode comprised of a plurality of fingers. The drive electrode is formed to have a length corresponding to that of the movable electrode, and formed to have a comb-shaped electrode that is comprised of a plurality of fingers and arranged to be interdigitated with the comb-shaped electrode of the movable electrode. The vertical springs are arranged in parallel to the substrate, and connected to be perpendicular to the movable electrode on both sides of a first end of the movable electrode.

Abstract: An MEMS variable optical attenuator includes a substrate having a planar surface, a micro-electric actuator arranged on the planar surface of the substrate, a pair of coaxially aligned optical waveguides having a receiving end and a transmitting end, respectively, and an optical shutter movable to a predetermined position between the receiving end and the transmitting end of the optical waveguides, and driven by the micro-electric actuator. A surface layer is formed on the optical shutter, has reflectivity less than 80% so as to allow incident light beams to partially transmit thereinto, and further has a sufficient light extinction ratio, thereby extinguishing the partially transmitted light beams therein.

Abstract: Disclosed herein are an electrostatic-type variable diffractive light modulator, which includes lower micromirrors that are provided on a glass substrate to be spaced apart from each other, and actuates upper micromirrors that are spaced apart from the substrate by an electrostatic actuating method, thus allowing the upper and lower micromirrors to diffract incident light entering a lower portion of the substrate, and a method of manufacturing the electrostatic-type variable diffractive light modulator.

Abstract: Disclosed is a light modulator having a digital micro blaze diffraction grating. In the light modulator, a fine protrusion is formed on an edge of a lower surface of a diffraction member so that a reflective surface inclines due to the fine protrusion when the diffraction member is drawn downward.

Abstract: Disclosed herein are an electrostatic-type variable diffractive light modulator, which includes lower micromirrors that are provided on a glass substrate to be spaced apart from each other, and actuates upper micromirrors that are spaced apart from the substrate by an electrostatic actuating method, thus allowing the upper and lower micromirrors to diffract incident light entering a lower portion of the substrate, and a method of manufacturing the electrostatic-type variable diffractive light modulator.

Abstract: Disclosed herein is a variable grating diffractive light modulator, which actuates lower reflecting plates of a lower reflecting array by a piezoelectric actuating method, and includes an upper reflecting array that is spaced apart from the lower reflecting array and attached to a lower surface of a substrate that is made of a light transmissive material and covers the lower reflecting array, so that the light modulator reflects incident light transmitted through the substrate and thereby produces diffractive light.

Abstract: Disclosed is herein an optical switch, which has advantages of an MEMS optical switch and a waveguide optical switch including a small electric power consumption, an easy packaging process, and a fast switching speed. The optical switch includes an input waveguide connected to an input optical fiber through which an optical signal is inputted, and a plurality of output waveguides connected to a plurality of output optical fibers through which the optical signal is outputted. An actuator is positioned between the input waveguide and the output waveguides, and has an MEMS structure including a fixed part and a moving part connected to the fixed part by a spring to move by a predetermined force.

Abstract: Disclosed is an MEMS variable optical attenuator comprising a substrate having a planar surface, optical fibers having an optical signal transmitting end and an optical signal receiving end, respectively, coaxially arranged on the substrate, a micro-electric actuator arranged on the substrate for providing a driving stroke along a direction perpendicular to an optical axis of the optical beam, at least one lever structure arranged on the substrate for receiving the driving stroke of the micro-electric actuator at a first end thereof and transferring an amplified displacement distance to an optical shutter through a second end thereof, an optical shutter arranged on the substrate and connected to the second end of the lever structure so as to be moved by the amplified displacement distance, thereby being displaced to an attenuation position of the optical beam.

Abstract: Disclosed is herein an optical switch, which has advantages of an MEMS optical switch and a waveguide optical switch including a small electric power consumption, an easy packaging process, and a fast switching speed. The optical switch includes an input waveguide connected to an input optical fiber through which an optical signal is inputted, and a plurality of output waveguides connected to a plurality of output optical fibers through which the optical signal is outputted. An actuator is positioned between the input waveguide and the output waveguides, and has an MEMS structure including a fixed part and a moving part connected to the fixed part by a spring to move by a predetermined force.