Abstract: An LED package structure comprises a 3D substrate, LED chips, wires, and resin encapsulants. The 3D substrate has a stepped contour and includes a first chip accommodation region and at least one second chip accommodation region surrounding the first chip accommodation region. A first electric contact and a second electric contact are arranged in the first chip accommodation region. The LED chips are arranged in the border of the 3D substrate. The wires are used to connect the LED chips in series or in series firstly and in parallel next. One of the wires connects the first electric contact and one of the LED chips. Another one of the wires connects the second electric contact and another one of the LED chips. The resin encapsulants respectively encapsulate the LED chips. The LED package structure is characterized in using a 3D substrate to facilitate wiring and increase the beam angle.

Abstract: A LED light bulb includes a light bulb adapter; a housing fixed on the light bulb adapter and having an accommodating space, wherein the housing has at least a vent hole; a convective heat dissipation piece including a first heat dissipation part and a second heat dissipation part connected under the first heat dissipation part; a light-emitting module disposed on a top surface of the convective heat dissipation piece; and a light bulb cover disposed on the top surface of the convective heat dissipation piece and covering the light-emitting module.

Abstract: An LED package structure comprises a 3D substrate, LED chips, wires, and resin encapsulants. The 3D substrate has a stepped contour and includes a first chip accommodation region and at least one second chip accommodation region surrounding the first chip accommodation region. A first electric contact and a second electric contact are arranged in the first chip accommodation region. The LED chips are arranged in the border of the 3D substrate. The wires are used to connect the LED chips in series or in series firstly and in parallel next. One of the wires connects the first electric contact and one of the LED chips. Another one of the wires connects the second electric contact and another one of the LED chips. The resin encapsulants respectively encapsulate the LED chips. The LED package structure is characterized in using a 3D substrate to facilitate wiring and increase the beam angle.

Abstract: A LED light bulb includes a light bulb adapter; a housing fixed on the light bulb adapter and having an accommodating space, wherein the housing has at least a vent hole; a convective heat dissipation piece including a first heat dissipation part and a second heat dissipation part connected under the first heat dissipation part; a light-emitting module disposed on a top surface of the convective heat dissipation piece; and a light bulb cover disposed on the top surface of the convective heat dissipation piece and covering the light-emitting module.

Abstract: An optical mouse is operated on a work surface and includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a rolling ball arranged on the casing and opposite to the light receiver. The light beam has only one reflection by the rolling ball during an optical path thereof and then is detected by the light receiver. The rolling ball is made of transparent material and the distance thereof with the light receiver is adjustable to vary image resolution. The optical mouse can be turned over and placed on a notebook computer for using as a track ball.

Abstract: An optical mouse is operated on a work surface and includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a rolling ball arranged on the casing and opposite to the light receiver. The light beam has only one reflection by the rolling ball during an optical path thereof and then is detected by the light receiver. The rolling ball is made of transparent material and the distance thereof with the light receiver is adjustable to vary image resolution. The optical mouse can be turned over and placed on a notebook computer for using as a track ball.

Abstract: An optical mouse includes at least one light emitter for emitting a light beam; a light receiver contained by a casing; a focusing lens arranged on the casing and placed between the light receiver and the work surface; wherein the light beam has only one reflection by the work surface during an optical path thereof and then propagates to the light receiver through the lens. The focusing lens can be replaced by a transparent dustproof lid, while the optical mouse still has acceptable efficiency.