Abstract: A novel narrow linewidth laser device is disclosed that is formed monolithically on a semiconductor substrate, such as an indium phosphide substrate, that includes a continuous waveguide with a gain section and a grating section wherein a grating is constructed so that its power reflectivity profile has a ratio of reflectivity slope over reflectivity at the 3 dB point below the reflectivity peak on the red side (longer wavelength side) of the grating larger than a value of 2/nm. The operating wavelength of the device may be tuned thermally, electrically, or thermo-electrically to be on the red side of the fiber Bragg grating reflectivity profile, preferably at the 3 dB point below the reflectivity peak or lower.

Abstract: A novel narrow linewidth laser device is disclosed that includes a gain element, such as a quantum well, quantum dot or bulk waveguide laser chip and a fiber Bragg grating formed in an optical fiber positioned to receive the output from a first end of the gain element and return a portion of said output back into the gain element. The fiber Bragg grating is constructed so that its power reflectivity profile has a ratio of reflectivity slope over reflectivity at the 3 dB point below the reflectivity peak on the red side (longer wavelength side) of the grating larger than a value of 2/nm. The operating wavelength of the device may be tuned thermally, electrically, or thermo-electrically to be on the red side of the fiber Bragg grating reflectivity profile, preferably, but not necessarily, at the 3 dB point below the reflectivity peak or lower.

Abstract: A novel narrow linewidth laser device is disclosed that includes a gain element, such as a quantum well, quantum dot or bulk waveguide laser chip and a fiber Bragg grating formed in an optical fiber positioned to receive the output from a first end of the gain element and return a portion of said output back into the gain element. The fiber Bragg grating is constructed so that its power reflectivity profile has a ratio of reflectivity slope over reflectivity at the 3 dB point below the reflectivity peak on the red side (longer wavelength side) of the grating larger than a value of 2/nm. The operating wavelength of the device may be tuned thermally, electrically, or thermo-electrically to be on the red side of the fiber Bragg grating reflectivity profile, preferably, but not necessarily, at the 3 dB point below the reflectivity peak or lower.

Abstract: A handheld tool carrying case having a carrying case base and a carrying case cover and at least one electronic system. The carrying case base is connected to the carrying case cover in a detachable fashion.

Abstract: A handheld tool carrying case having a carrying case base and a carrying case cover and at least one electronic system. The handheld tool carrying case has a lighting device and an orientation device, which are provided to fixate at least one part of the carrying case base or of the carrying case cover pivotably in various orientations relative to a resting plane of the carrying case base or of the carrying case cover.

Abstract: A handheld tool carrying case has an illuminating device, which has at least one illumination arrangement. It is provided that the illuminating device has at least one cooling element for cooling the illumination arrangement.

Abstract: An inductive rechargeable battery charging apparatus for a vehicle, having at least one DC voltage transformer and having at least one inductive charging unit that is provided in order to supply energy by way of the DC voltage transformer, is described.

Abstract: The disclosure relates to an electrical device having a control unit. A near field communication device connected to the control unit is provided.

Abstract: A handheld tool storage device, particularly to a handheld tool carrying case, having at least one base body unit which includes at least one movably supported base body element, and having at least one electric functional unit, and having at least one operating unit at least for operating the electric functional unit. The operating unit has at least one operating element that is at a minimum distance from an axis of motion of the base body element, which is less than 50% of a main extension of the base body element.

Abstract: A handheld tool carrying case having a carrying case base and a carrying case cover and at least one electronic system. The carrying case base or the carrying case cover has at least one battery interface and one lighting device, which are at least partly fixedly connected to the carrying case base or fixedly connected to the carrying case cover.

Abstract: A battery-powered handheld vacuum device for use on building sites includes: a dust collection box; and a motor housing, in which a drive motor provided with a fan impeller and a battery pack for supplying current to the drive motor independently of an electrical network are provided. The dust collection box is fixed in place on the motor housing in releasable manner. A handle, with which the battery pack engages at least sectionally, is formed on the motor housing.

Abstract: A hand-lamp device having a battery-receiving area, a swiveling mechanism, a lighting device and a coupling device which is provided to contact a hand-held machine-tool battery located in the battery-receiving area, and which in at least one operating state, is situated between the lighting device and the battery-receiving area. The swiveling mechanism is situated at least partially in an immediate area of the coupling device.

Abstract: The disclosure relates to an electrical device having a control unit. A near field communication device connected to the control unit is provided.

Abstract: A novel free space optics transceiver is disclosed comprising at least one light source, at least one photodetector, corresponding positioning means that can independently adjust the position of the light source and the photodetector, and a controller that can send and receive alignment frames conforming to a communications protocol to and from a remote optical transceiver and can use information in the incoming alignment frames from the remote optical transceiver to appropriately adjust the position of the light source and the photodetector thereby maximizing the received power of light signals sent by the remote optical transceiver. Also, an alignment method is disclosed wherein the controller continuously adjusts the positions of the light source and the photodetector until a light signal is acquired from a remote optical transceiver. Then, the incoming alignment information is used to adjust the light source position to achieve bi-directional communication with the remote optical transceiver.

Abstract: A novel optical detection apparatus is disclosed comprising a plurality of photodetectors and a plurality of transimpedance amplifiers wherein the photodetectors and the amplifiers are electrically connected to each other and are located in close proximity to each other, thus allowing the detecting of high frequency optical signals over a large detection area. Further, logical circuitry is disclosed for processing the signals generated from the photodetectors and for determining the strength of incoming light signals on various portions of the detection area.

Abstract: A novel optocoupler is disclosed that includes at least one light emitting chip attached to one side of an optically transparent substrate and a photodetector chip attached to the opposite side of the optically transparent substrate. The light emitting chip receives electrical signals that are converted to light signals that are transmitted through the optically transparent substrate and are received and converted to electrical signals by the photodetector on the opposite side of the substrate. Further, a method to manufacture an optocoupler is disclosed where a light emitting chip is flip chip attached to one side of an optically transparent substrate with the light emitting surface of the chip facing the transparent substrate and a photodetector is flip chip attached to the opposite side of the optically transparent substrate, with the receiving surface of the chip facing the optically transparent substrate.

Abstract: A battery-powered handheld vacuum device for use on building sites includes: a dust collection box; and a motor housing, in which a drive motor provided with a fan impeller and a battery pack for supplying current to the drive motor independently of an electrical network are provided. The dust collection box is fixed in place on the motor housing in releasable manner. A handle, with which the battery pack engages at least sectionally, is formed on the motor housing.

Abstract: A system having at least one hand tool box, a hand tool fastening arrangement, and a construction site radio, which is configured to be removable from the hand tool box, the hand tool fastening arrangement and the construction site radio being configured to be jointly transportable in a receptacle space of the hand tool box.

Abstract: A handheld lighting device includes: a hand tool battery coupling unit, a cooling element, and an illuminating device which has an emission direction. The cooling element has at least one outer surface which is situated in the emission direction downstream from an outer surface of the illuminating device, which is transilluminated during operation.

Abstract: A hand-lamp device having a battery-receiving area, a swiveling mechanism, a lighting device and a coupling device which is provided to contact a hand-held machine-tool battery located in the battery-receiving area, and which in at least one operating state, is situated between the lighting device and the battery-receiving area. The swiveling mechanism is situated at least partially in an immediate area of the coupling device.