摘要:
A vertical cavity surface emitting laser (VCSEL) (100) has a substrate (104), on which are disposed first and second distributed Bragg reflectors (DBRs) (106, 112), each DBR comprising a stack of layers of alternating refractive index, an active layer (108) disposed between the DBRs, and an aperture layer (110) disposed either between the DBRs or within one of the DBRs. The aperture layer (110) has a border (116) having an internal boundary with a plurality of indented portions defining one or more apertures. Such a VCSEL is easily manufacturable and provides a narrow bandwidth output, as well as mitigating at least some of the problems of prior art VCSELs. Mesa (102) may be etched to be non-circular and subsequent selective oxidation of aperture layer (110) results in a non-circular current confinement aperture (114) promoting higher-order lateral modes (LP21).
摘要:
A module system is provided that includes at least one module support and at least one module support and at least one energy storage module that is connected to the at least one module support. The module support and the energy storage module have cooling fluid connections, electric contacts, and coupling elements that are adapted to each other.
摘要:
An antenna arrangement for a communication device is provided that may include a monopole antenna element having a bottom side joined to a first lateral side and joined to a second lateral side. The bottom side may be joined to each lateral side at an angle less than 90 degrees for forming an antenna element area defined at least by the bottom side and the first and second lateral sides. The antenna element area may include an central part arcuate around a longitudinal axis in a conical fashion, so that at least a part of the bottom side is provided half a turn around the longitudinal axis.
摘要:
An invention is disclosed for improved computer system management by allowing complex computer-monitored events to be handled in different formats for correlation, analysis and action. Specifically, a method and system are disclosed for processing multiple heterogeneous event types in a complex event processing (CEP) engine.
摘要:
A mobile sanitary system has a transportable platform, in particular a chassis, on which a plurality of sanitary elements are arranged. A number of technical supply devices are situated on the platform. According to one aspect of the invention, the technical supply devices are arranged in a central region of the platform, which region is surrounded all the way around by the plurality of sanitary elements.
摘要:
An insulating device for an electrochemical energy storage unit is provided, wherein the insulating device includes a cooling plate that comprises at least one opening. A contact rail is provided for dissipating heat and a retaining element for fixing an arrangement between the cooling plate and the contact rail and has a shaft extending through the opening of the cooling plate, and a first intermediate space is defined by a distance between a wall of the opening and the shaft and/or a second intermediate space is defined by a distance between an edge of the contact rail and the shaft. A connecting element having a surface including an electrically insulating material is disposed between a main surface of the cooling plate and a surface of the contact rail, and a partial region thereof protrudes into the first and/or the second intermediate space.
摘要:
A system and method for use in training armed personnel are described. According to one embodiment, the system includes a number of autonomous mobile units and the units are arranged to perform actions in a training area to simulate participants in a firearms training exercise, and at least one of the mobile units is arranged to base at least some of its actions at least partially on the behavior of at least one human in the training area.
摘要:
There is described a high speed vertical-cavity surface-emitting laser (VCSEL) comprising a substrate and first and second distributed Bragg reflectors (DBRs) disposed on the substrate, each comprising a stack of layers of alternating refractive index. A resonant cavity is disposed between the DBRs and an active region disposed in the resonant cavity. The resonant cavity is formed of material having low refractive index and has an optical thickness in a direction perpendicular to the substrate of ½λ, where λ is the wavelength of light emitted by the VCSEL.
摘要:
A mobile sanitary system has a transportable platform, in particular a chassis, on which a plurality of sanitary elements are arranged. A number of technical supply devices are situated on the platform. According to one aspect of the invention, the technical supply devices are arranged in a central region of the platform, which region is surrounded all the way around by the plurality of sanitary elements.
摘要:
The present invention relates to a broadband antenna for at least six frequency bands provided on an isolating antenna support structure comprising. The antenna comprises a low band branch and a high band branch coupled to a substantially rectangular ground plane provided on a PCB. The coupling between the ground plane and the low band branch is a capacitive coupling and has a vertical distance of 3-7 mm there in between.