Abstract: An optical radar includes an optical-signal receiving unit and an optical-signal pickup unit. The optical-signal receiving unit is configured to receive a reflected light. The optical-signal pickup unit is coupled to the optical-signal receiving unit and includes a first optical-signal filtering circuit and a second optical-signal filtering unit. The first optical-signal filtering circuit is configured to filter out a first interference pulse of the reflected light, wherein the first interference pulse has a first interference voltage value higher than a reference voltage. The second optical-signal filtering circuit is coupled to the first optical-signal filtering circuit and configured to generate a clock signal comprising a clock pulse; and filter out a second interference pulse that does not match the clock pulse in time point from the reflected light.

Abstract: A parameter analysis method and a parameter analysis system for metal additive manufacturing are provided. The parameter analysis method includes: establishing a powder bed model; simulating a multi-track melting result of the powder bed model according to a plurality of laser parameters to generate a melting model; analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model, and defining a plurality of melting surface powders according to the position divergences; analyzing the melting surface powders to calculate a surface average curvature of the melting model; and determining a laser hatch in the laser parameters allows metal additive manufacturing to meet a quality as needed according to whether the surface average curvature is between a first curvature threshold and a second curvature threshold, the first curvature threshold being smaller than the second curvature threshold.

Abstract: A light emission module includes a laser source, a beam steering element and a scanning-angle expanding lens set. The laser source is used for emitting a laser beam. The beam steering element is used for receiving the laser beam and splitting the laser beam into at least two laser beams. The scanning-angle expanding lens set, adjacent to the beam steering element, is configured to receive and integrate the at least two laser beams, and to control a spanning angle and a scanning angle between the at least two laser beams on a scanned object. The spanning angle is a visual angle of a vertical scan direction of the scanned object, and the scanning angle is another visual angle of a horizontal scan direction of the scanned object. In addition, a light emission module and a light scanning method are also provided.

Abstract: A parameter analysis method and a parameter analysis system for metal additive manufacturing are provided. The parameter analysis method includes: establishing a powder bed model; simulating a multi-track melting result of the powder bed model according to a plurality of laser parameters to generate a melting model; analyzing the melting model to calculate a plurality of position divergences of a plurality of melting powders of the melting model, and defining a plurality of melting surface powders according to the position divergences; analyzing the melting surface powders to calculate a surface average curvature of the melting model; and determining a laser hatch in the laser parameters allows metal additive manufacturing to meet a quality as needed according to whether the surface average curvature is between a first curvature threshold and a second curvature threshold, the first curvature threshold being smaller than the second curvature threshold.

Abstract: The disclosed embodiments provide an adjustable brace including a first wearable part, a second wearable part, an angle adjustment mechanism and a resistance mechanism. The first wearable part and the second wearable part are pivotably connected to each other via the angle adjustment mechanism and the resistance mechanism.

Abstract: The present disclosure provides a device and method for powder distribution and an additive manufacturing method, wherein different size or kind of powders could be chosen to be accommodated within a receptacle. The receptacle can uniformly mix the powder by a rotation movement, pour out the powders by the rotation movement and distribute the powders for forming a layer by a translation movement. In another embodiment, the receptacle further comprises a heating element for preheating the powders. Not only can the present disclosure uniformly mix the powders so as to reduce the thermal deformation and distribute the powder layer compactly, but also can the present disclosure distribute different kinds of powder in different layer so as to increase the diversity in additive manufacturing.

Abstract: This disclosure relates to an adjustable brace including a first wearable part, a second wearable part, an angle adjustment mechanism and a resistance mechanism. The first wearable part and the second wearable part are pivotably connected to each other via the angle adjustment mechanism and the resistance mechanism.

Abstract: The disclosure relates to ankle foot orthosis including foot plate, lower leg piece, first and second connecting parts, and pin. The first connecting part is connected to the foot plate, the second connecting part is connected to the lower leg piece, the first connecting part has an engagement portion, the second connecting part has a groove and an opening connected to the groove, the first connecting part is pivotably engaged with the second connecting part, the pin is detachably disposed on the first connecting part of the first pivoting mechanism, and the second connecting part has a first stopper and a second stopper spaced apart from each other. The first pivoting mechanism has a first detachable state; when the first pivoting mechanism is in first detachable state, the engagement portion is located at the opening and is detachable from the groove via the opening.

Abstract: A limb prosthesis including a palm, a forearm, an upper arm, an elbow joint and a wrist joint is provided. The palm has a first pivot and a first lock set. The upper arm has a socket. The elbow joint connects the forearm to the upper arm. The wrist joint includes a first connecting rod connected to the forearm. The first pivot rotatably penetrates through the first connecting rod. The first lock set is locked to the first pivot. A first wedge surface of the first lock set contacts a second wedge surface of the first connecting rod. By adjusting a distance between the first lock set and the first pivot, a magnitude of a forward force between the first wedge surface and the second wedge surface is adjusted, such that the palm is fixed relative to the first connecting rod or rotatable around an axial direction perpendicular to an extending direction of the forearm.

Abstract: A limb prosthesis including a palm, a forearm, an upper arm, an elbow joint and a wrist joint is provided. The palm has a first pivot and a first lock set. The upper arm has a socket. The elbow joint connects the forearm to the upper arm. The wrist joint includes a first connecting rod connected to the forearm. The first pivot rotatably penetrates through the first connecting rod. The first lock set is locked to the first pivot. A first wedge surface of the first lock set contacts a second wedge surface of the first connecting rod. By adjusting a distance between the first lock set and the first pivot, a magnitude of a forward force between the first wedge surface and the second wedge surface is adjusted, such that the palm is fixed relative to the first connecting rod or rotatable around an axial direction perpendicular to an extending direction of the forearm.

Abstract: An implant device for osseous integration includes a plurality of connection bars and at least one frame bar. These connection bars are connected with each other to form a three-dimensional (3D) grid structure. The frame bar is connected with at least two of the connection bars to define at least one edge of the 3D grid structure. Wherein, the frame bar has a diameter substantially greater than that of these connection bars.

Abstract: An implant device for osseous integration includes a plurality of connection bars and at least one frame bar. These connection bars are connected with each other to form a three-dimensional (3D) grid structure. The frame bar is connected with at least two of the connection bars to define at least one edge of the 3D grid structure. Wherein, the frame bar has a diameter substantially greater than that of these connection bars.

Abstract: The present disclosure provides a device and method for powder distribution and an additive manufacturing method, wherein different size or kind of powders could be chosen to be accommodated within a receptacle. The receptacle can uniformly mix the powder by a rotation movement, pour out the powders by the rotation movement and distribute the powders for forming a layer by a translation movement. In another embodiment, the receptacle further comprises a heating element for preheating the powders. Not only can the present disclosure uniformly mix the powders so as to reduce the thermal deformation and distribute the powder layer compactly, but also can the present disclosure distribute different kinds of powder in different layer so as to increase the diversity in additive manufacturing.

Abstract: The present disclosure provides a device and method for powder distribution and an additive manufacturing method, wherein different size or kind of powders could be chosen to be accommodated within a receptacle. The receptacle can uniformly mix the powder by a rotation movement, pour out the powders by the rotation movement and distribute the powders for forming a layer by a translation movement. In another embodiment, the receptacle further comprises a heating element for preheating the powders. Not only can the present disclosure uniformly mix the powders so as to reduce the thermal deformation and distribute the powder layer compactly, but also can the present disclosure distribute different kinds of powder in different layer so as to increase the diversity in additive manufacturing.

Abstract: The present disclosure provides a device and method for powder distribution and an additive manufacturing method, wherein different size or kind of powders could be chosen to be accommodated within a receptacle. The receptacle can uniformly mix the powder by a rotation movement, pour out the powders by the rotation movement and distribute the powders for forming a layer by a translation movement. In another embodiment, the receptacle further comprises a heating element for preheating the powders. Not only can the present disclosure uniformly mix the powders so as to reduce the thermal deformation and distribute the powder layer compactly, but also can the present disclosure distribute different kinds of powder in different layer so as to increase the diversity in additive manufacturing.

Abstract: An electromagnetic transmission device. A guide bar connects to a fixed base and includes magnetic-permeable material and a first central height plane. A coil connects to the fixed base. A support base movably fits on the guide bar. An annular magnetic member connects to the support base and is surrounded by the coil. A magnetization direction of the annular magnetic member is perpendicular to a moving direction of the support base and annular magnetic member. The annular magnetic member includes a second central height plane. The coil interacts with the annular magnetic member to generate a first force. When moving to separate the second central height plane from the first central height plane, the annular magnetic member interacts with the guide bar to generate a second force, driving the support base and annular magnetic member to move along a direction perpendicular to the magnetization direction of the annular magnetic member.

Abstract: An apparatus and a method are proposed for measuring displacement, surface profile and roughness of a moving object or an inner radius of a hollow cylinder. The apparatus includes a light emitting unit, a light dispersing unit for receiving light from the light emitting unit and focusing rays with different wavelengths into different focal points with different intervals, and a wavelength measuring unit for measuring wavelengths of the rays. When the moving object is moving within a dispersing range of the focal points, the rays with different wavelengths are reflected or scattered, and the displacement of the moving object is learned from variation of the wavelengths being measured by the wavelength measuring unit. Given that a reflecting component is disposed in the centre of an inner circle of the hollow cylinder, the inner radius of the hollow cylinder can be measured by the principle of the apparatus for measuring displacement.

Abstract: A voice coil motor. A first coil is connected to a fixed base and includes a first winding portion and a second winding portion connected to and opposite the first winding portion. A second coil is connected to the fixed base and includes a third winding portion and a fourth winding portion connected to and opposite the third winding portion. A first magnetic member is connected to a support base and includes a first magnetic pole and a second magnetic pole. The first and second magnetic poles oppose the first and third winding portions, respectively. A second magnetic member is connected to the first magnetic member and includes a third magnetic pole and a fourth magnetic pole. The third magnetic pole opposes the second winding portion and abuts the first magnetic pole. The fourth magnetic pole opposes the fourth winding portion and abuts the second magnetic pole.

Abstract: A voice coil motor. A guide bar connects to a fixed base. A coil connects to the fixed base and includes a first winding portion and a second winding portion. A current direction in the first winding portion is opposite that in the second winding portion. A support base movably fits on the guide bar. A magnetic member connects to the support base and includes a first magnetic pole and a second magnetic pole. A magnetization direction of the magnetic member parallels a moving direction of the support base and magnetic member and is perpendicular to a central axis of the coil. The first and second magnetic poles respectively oppose the first and second winding portions of the coil. The first and second magnetic poles respectively interact with the first and second winding portions to generate a first force and a second force, moving the support base and magnetic member.

Abstract: A high power LED has at least a porous material layer, a thermal conductive layer and a chip. The thermal conductive layer is disposed on the surface of the porous material layer and the chip is disposed on the thermal conductive layer. Heat generated by the chip is conducted from the thermal conductive layer to the porous material layer, and convected outside via the porous material layer. Thereby, surface area in contact with the air is increased and high thermal conductivity and high heat convection are also achieved.