Abstract: A charging device used in a handheld device comprises a main body, a coupling portion connected to an end of the main body and the coupling portion has a connector, and a battery unit connected to another end of the main body. When the charging device is in a first status, the battery unit and the connector are coupled together; when it is in a second status, the battery unit is detached from the connector so that the connector is electrically connected with the handheld device in order to have the handheld device charged.

Abstract: A wafer including a substrate, a dielectric layer over the substrate, and a conductive layer over the dielectric layer is disclosed. The substrate has a main portion. A periphery of the dielectric layer and the periphery of the main portion of the substrate are separated by a first distance. A periphery of the conductive layer and the periphery of the main portion of the substrate are separated by a second distance. The second distance ranges from about a value that is 0.5% of a diameter of the substrate less than the first distance to about a value that is 0.5% of the diameter greater than the first distance.

Abstract: Optical waveguides using segmented periodically-spaced high contrast gratings bounding a hollow core propagation region on at least two sides. Incident light is received in a hollow waveguide (HW) region (core) between opposing HCG faces which provide lateral confinement in response to glancing reflections of the incident light beam from high refractive index segments of the HCG as it traverses the core. Embodiments are described for planar waveguides (1D) having a planar core between two planar HCGs, as well as 2D waveguides, such as having rectangular segments of the HCG through which light is propagated. Additionally, other configurations of HCG-HW, including those having arbitrary incidence and azimuth, angled HCG segments, propagation in a direction which is transverse, or alternatively parallel, to the segments of the HCG.

Abstract: A foldable structure for a hospital bed contains two mounts, a bed frame, and a bed plane, each mount including two rotary positioning pieces, wherein each rotary positioning piece has a hole and an arcuate groove to axially connect the each rotary positioning piece with two coupling elements of the bed frame, such that the bed frame rotates relative to the two mounts, the each rotary positioning piece has two orifices corresponding to two ends of the arcuate groove so that a spring pin of each side of the bed frame is inserted into one of the two orifices of the each rotary positioning pieces, hence the spring pin is pushed out of the one of the two orifices of the each rotary positioning pieces, a coupling element in the arcuate groove rotates smoothly relative to a coupling element in the hole, thus retracting or expanding the bed frame easily.

Abstract: An earphone structure with no-section-difference design is provided, including an earphone casing, a transmission wire and a strain relief thereof. The earphone casing has a joining end to join with a joining section of the transmission wire The strain relief is formed at where the earphone casing and the transmission wire are joined. Along from the earphone casing to the transmission wire, diameter of the strain relief decreases progressively to a same diameter with that of the transmission wire, thereby providing a no-section-difference exterior look thereof between the strain relief and the transmission wire.

Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.

Abstract: Optical waveguides using segmented periodically-spaced high contrast gratings bounding a hollow core propagation region on at least two sides. Incident light is received in a hollow waveguide (HW) region (core) between opposing HCG faces which provide lateral confinement in response to glancing reflections of the incident light beam from high refractive index segments of the HCG as it traverses the core. Embodiments are described for planar waveguides (1D) having a planar core between two planar HCGs, as well as 2D waveguides, such as having rectangular segments of the HCG through which light is propagated. Additionally, other configurations of HCG-HW, including those having arbitrary incidence and azimuth, angled HCG segments, propagation in a direction which is transverse, or alternatively parallel, to the segments of the HCG.

Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.

Abstract: An earphone device with a bass adjusting function is provided. The earphone device includes an accommodating portion and an extension segment. The accommodating portion has an inner chamber for accommodating a speaker. The extension segment which is hollow-shaped and has a first space and a second space therein, and the first space is in communication with the inner chamber of the accommodating portion, and when a portion of the extension segment is adjusted from a first position to a second position, the first space, the second space, and the inner chamber of the accommodating portion are in communication, so as to increase a volume of the back chamber of the speaker.

Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.

Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.

Abstract: The invention relates to a computer system capable of automatically duplicating data into discs with automatically blank-disc-supplying. The invention can be implemented by software, hardware, or any of the combinations. Since the invention does not utilize a mechanical arm to move the discs, the structure of the invention saves space compared with a traditional disc duplicating machine; moreover, the cost is less than that of the prior art.

Abstract: A water flow temperature control system is described. A hot and cold water flow respectively flow through a first and a second inlet passage of a valve and reach a temperature control sheet through a pressure equalization valve and two water seals. The quantities of the water flows are controlled by changing positions of two large or two small tapered adjusting holes on the temperature control sheet relative to the two water seals before flowing towards a water mixer of a mixing device. The water flows enter from a large opening portion of the water mixer, and are mixed in a helical direction. After that, the water flows pass through a number of outlet holes on a small opening portion of the water mixer towards an outlet passage of the valve. The center of the temperature control sheet is connected to a first end of a transmission shaft.

Abstract: A concentration photovoltaic cell system with light guide includes a concentrator for focusing sunlight; a light guide located at where the sunlight is focused by the concentrator, so that the focused light is fully coupled to an input end of the light guide and propagates to an output end of the light guide; and a solar energy converter arranged at the output end of the light guide for receiving and converting the light projected from the light guide into electric energy. With the above arrangements, the solar converter may be located at a place not exposed to sunlight to avoid lowered energy conversion efficiency caused by temperature rising at photovoltaic cell chips thereof, and the use of the light guide enables increased GCR and light concentrating efficiency to enable reduced number of expensive photovoltaic cells.

Abstract: A headset includes two sound output units and a connector connecting the two sound output units. Each of the two sound output units includes a limiting part arranged thereon. The connector is made of an elastic material and capable of being flexibly mounted to each of the limiting parts so as to improve the convenience of using the headset by making it easy to wear, adjust and collect.

Abstract: A cable of easy collection includes multiple hardened sections and multiple soft sections. Each of the soft sections is disposed between each two hardened sections so that the hardened sections can overlap with each other.

Abstract: The invention relates to a computer system capable of automatically duplicating data into discs with automatically blank-disc-supplying. The invention can be implemented by software, hardware, or any of the combinations. Since the invention does not utilize a mechanical arm to move the discs, the structure of the invention saves space compared with a traditional disc duplicating machine; moreover, the cost is less than that of the prior art.