Abstract: An integrated motor and drive assembly is disclosed and includes a housing, a motor and a drive. The housing includes a motor-accommodation portion and a drive-accommodation portion. The drive includes a power board and a control board. The power board is made of a high thermal conductivity substrate and includes a power element and an encoder disposed on the first side, the first side faces the motor, the power board and the motor are stacked along a first direction, and the second side contacts the housing to from a heat-dissipating route. The control board is disposed adjacent to the power board. The control board and the power board are arranged along a second direction perpendicular to the first direction, and the first direction is parallel to an axial direction of the motor. A part of the power board and a part of the control board are directly contacted to form an electrical connection.

Abstract: A method of brightness enhancement layer with sub-wavelength structure for a light-emitting element contains steps of: (a). synthesizing PS nanospheres by using emulsion polymerization without emulsifier; (b). spreading and suspending the PS nanospheres in a liquid level by way of PS nanosphere suspension; (c). forming the PS nanospheres in a close-packed arrangement by using surfactant solution; (d). regulating a diameter of the PS nanospheres in an oxygen plasma treatment so as to form non-close-packed single-layer PS nanosphere array structure, thus producing the sub-wavelength structure; (e) replicating the sub-wavelength structure onto an indium tin oxide (ITO) conductive glass in a nanoimprint lithography manner; and (f) using the ITO conductive glass with the sub-wavelength structure as a substrate so as to manufacture the light-emitting element.

Abstract: A method of brightness enhancement layer with sub-wavelength structure for a light-emitting element contains steps of: (a). synthesizing PS nanospheres by using emulsion polymerization without emulsifier; (b). spreading and suspending the PS nanospheres in a liquid level by way of PS nanosphere suspension; (c). forming the PS nanospheres in a close-packed arrangement by using surfactant solution; (d). regulating a diameter of the PS nanospheres in an oxygen plasma treatment so as to form non-close-packed single-layer PS nanosphere array structure, thus producing the sub-wavelength structure; (e) replicating the sub-wavelength structure onto an indium tin oxide (ITO) conductive glass in a nanoimprint lithography manner; and (f) using the ITO conductive glass with the sub-wavelength structure as a substrate so as to manufacture the light-emitting element.

Abstract: A modulized LED apparatus includes a container having a chamber wall with a chamber therein, a transparent surface thereof for the container to be pervious to radiant energy and/or light. The container has an optical processing area for converging, collecting or diffusing radiant energy and/or light. A liquid refrigerant and an evaporator including a heat conductor unit and a capillary unit are in the chamber, and the capillary unit has a portion contacting the liquid refrigerant. With the heat generated by an operating LED device, the evaporator evaporates the liquid refrigerant into a gaseous phase, which then condenses on the chamber wall and thus transfers heat to the chamber wall for dissipating, and the condensed refrigerant is evaporated again by the evaporator again into the gaseous phase. Due to this thermal recycling, the refrigerant continuously transfers heat from the LED device to the ambient environment.

Abstract: A modulized LED apparatus includes a container having a chamber wall with a chamber therein, a transparent surface thereof for the container to be pervious to radiant energy and/or light. The container has an optical processing area for converging, collecting or diffusing radiant energy and/or light. A liquid refrigerant and an evaporator including a heat conductor unit and a capillary unit are in the chamber, and the capillary unit has a portion contacting the liquid refrigerant. With the heat generated by an operating LED device, the evaporator evaporates the liquid refrigerant into a gaseous phase, which then condenses on the chamber wall and thus transfers heat to the chamber wall for dissipating, and the condensed refrigerant is evaporated again by the evaporator again into the gaseous phase. Due to this thermal recycling, the refrigerant continuously transfers heat from the LED device to the ambient environment.

Abstract: Disclosed is a system for locating a laser spot on a screen. The system includes a projector, a laser pointer, a camera, a diffractive optical element, and a computer. The projector casts an image on the screen. The laser pointer casts the laser spot on the screen. The camera takes a picture corresponding to the image on the screen. The diffractive optical element is put between the screen and the camera in order to transform the laser spot into an easily observable diffractive pattern in the picture. The computer receives the picture from the camera and locates a semi-cursor on a display connected thereto based on the diffractive pattern in the picture.

Abstract: The present invention discloses a highly efficient constant transconductance power amplifier. an embodiment of the invention comprises a positive error amplifier, a negative error amplifier, four current sources, two differential current controllers, and a constant gm biasing circuit. The amplifiers are used with deliberate offset voltages in order to make two transconductance amplifiers which serve in the positive and negative cycle in order to turn on in the appropriate cycle properly. Positive current sources are current outputs while negative current sources sink the current. The current sources provide current to the current controllers. The differential current controllers control the amount of current from the current source flowing to the load. This is proportional to the differential input signal. The constant transconductance biasing circuit provides the transconductance amplifiers with stable biasing voltage. This eliminates any drift associated with process variation.

Abstract: The present invention discloses a highly efficient constant transconductance power amplifier. an embodiment of the invention comprises a positive error amplifier, a negative error amplifier, four current sources, two differential current controllers, and a constant gm biasing circuit. The amplifiers are used with deliberate offset voltages in order to make two transconductance amplifiers which serve in the positive and negative cycle in order to turn on in the appropriate cycle properly. Positive current sources are current outputs while negative current sources sink the current. The current sources provide current to the current controllers. The differential current controllers control the amount of current from the current source flowing to the load. This is proportional to the differential input signal. The constant transconductance biasing circuit provides the transconductance amplifiers with stable biasing voltage. This eliminates any drift associated with process variation.

Abstract: Two-dimensional electric-filed vector is measured in this invention, wherein two linearly polarized laser beams are focused on two different bottom planes of an electro-optic crystal so that two reflected beams from the bottom planes have two different paths inside the electro-optic crystal and thus have different phase retardation when an electric-field is exerted on the electro-optic crystal by a circuit under test. The electric-filed direction of the circuit can be calculated by using two differential signals which are proportional to the phase retardation of the two reflected beams.