摘要:
Group II-VI compound semiconductor light emitting devices which include at least one II-VI quantum well region of a well layer disposed between first and second barrier layers is disclosed. The quantum well region is sandwiched between first and second cladding layers of a II-VI semiconductor material. The first cladding layer is formed on and lattice matched to the first barrier layer and to a substrate of a III-V compound semiconductor material. The second cladding layer is lattice matched to the second barrier layer. The quantum well layer comprises a II-VI compound semiconductor material having the formula A.sub.x B.sub.(1-x) C wherein A and B are two different elements from Group II and C is at least one element from Group VI. When the second cladding layer has a p-type conductivity, a graded bandgap ohmic contact according to the present invention can be utilized. The graded bandgap contact can be a single continuously graded II-VI p-type region or a plurality of cells with each of the cells having first and second thin layers of first and second p-type II-VI semiconductor materials respectively. Another embodiment of the present invention discloses a monolithic multicolor light emitting element capable of emitting four colors and a method for fabricating same. The monolithic multicolor element includes four II-VI semiconductor light emitting devices formed on a single III-V substrate.
摘要:
A method and a device for detecting a 1588 time error between network elements are disclosed. The method includes: a 1588 time network is established for an entire network; when it is required to detect a 1588 time error between a network element and its opposite network element, the network elements transmit, probe packets, each including a local timestamp to each other; and the network element receiving a probe packet calculates, according to a preset time difference algorithm, a time difference between the local timestamp and the timestamp in the probe packet, determines, according to the time difference, whether there is a failure in a detection path, and reports an alarm when there is a failure in the detection path. The disclosure prevents erroneous time transmission due to the time error, thus ensuring the network stability.
摘要:
Techniques for organizing and presenting deals/commercial offers received by users in emails are provided. Emails directed to a user that contain commercial offers for the user are determined. The determined emails are stored in a deal folder for the user. A deal newsletter is generated that at least summarizes commercial offers contained in at least a portion of the emails stored in the deal folder. The deal folder may be displayed to show the user the received deal emails. Furthermore, the deal newsletter may be displayed to the user to summarize the received deals for the user.
摘要:
Method of protection zone selection in a multiple busbar arrangement, the multiple busbar arrangement including busbar zones and bays connectable to the busbar zones, which bays include measurement transformers. The method includes the steps of: receiving first connection data including information of an operational status of measurement transformer to busbar zone connections; determining all pairs of connected busbar zone to busbar zone connections based on the first connection data; comparing data representing pairs of busbar zone to busbar zone connections, based on the comparing; assigning each pair of busbar zones which has a busbar zone in common with at least another pair of busbar zone to busbar zone connection to a respective protection zone; and defining any busbar zone that is not connected to any other busbar zone as a protection zone. The present invention also relates to a computer program product and a device for carrying out the method.
摘要:
An LED lamp includes a plurality of LED light units, a connecting member engaged with first ends of the LED light units, a mounting member engaged with second ends of the LED light units, and two strengthening members. The LED light units are juxtaposed together and placed side by side. Each LED light unit comprises a heat sink and a plurality of LED modules engaged with a bottom of the heat sink. The strengthening members extend through two outmost side portions of the LED light units and connecting the connecting member and the mounting member to support the LED light units.
摘要:
The present invention discloses a time synchronization method and apparatus. The method comprises: each net element node locks a clock synchronization signal of its upper-level net element node through a physical channel, and a clock synchronization network is established; and each net element node performs time counting by using the locked clock synchronization signal and performs time compensation according to the time counting through a time synchronization protocol to realize time synchronization. Through the present invention, each net element node performs the time counting by using the locked clock signal, and performs the time compensation according to the time counting to realize the time synchronization, thus the problem that the accumulative effect of phase transfer results in very obvious phase delay in the related technologies is solved, so as to reduce the phase delay and realize high precision, high interference resistance and reliability.
摘要:
An LED lamp includes a base, an LED module having a plurality of LEDs mounted on a top of the base, and a light-guiding module fixed on the LED module. The light-guiding module includes a plurality of mounted plates and a plurality of inserted plates intersecting and engaging the mounted plates. The mounted plates and the inserted plates cooperatively define a plurality of cavities to receive corresponding LEDs therein for guiding and reflecting light generated by the corresponding LED in a predetermined manner.
摘要:
An outdoor LED lamp assembly includes a receiving member and an LED lamp mounted on the receiving member. The LED lamp includes a heat sink and a plurality of LED modules mounted on the heat sink. The receiving member includes a bottom plate. A plurality of screw assemblies extends through the bottom plate to engage with the receiving member to mount the bottom plate on the receiving member. Each of the screw assemblies includes a screw and a circlip snapping the screw. The screw includes a head and a thread portion extending from the head. The threaded portion threadedly engages in the receiving member. The bottom plate of the receiving member is sandwiched between the head and the circlip. A wire interconnects the receiving member and the bottom plate. The screws are remained on the bottom plate when the screws are loosened from the receiving member.
摘要:
An LED lamp includes a bracket, a heat sink assembly mounted on a top side of the bracket and a plurality of LED modules mounted on a bottom surface of the heat sink assembly. The heat sink assembly has a pair of bottom surfaces. The bottom surfaces form an alary configuration and the LED modules are mounted on the bottom surfaces.
摘要:
An LED lamp assembly includes a central member and a plurality of lamps each having an LED module and a heat sink in thermal connection with the LED module. The central member has a plurality of inserting extrusions formed at a circumference thereof. The lamps each have a receiving tube projecting from an end thereof. The inserting extrusions are respectively inserted into the receiving tubes of the lamps to assemble the lamps onto the circumference of the central member. The lamps are tilted from the central portion along a radially outward direction.