摘要:
A light emitting diode arrangement, comprising at least one high power light emitting diode (34), the high power light emitting diode (34) being mounted onto a flexible circuit board (10). A method is also disclosed for producing such a light emitting diode arrangement.
摘要:
A light emitting diode arrangement, having at least one high power light emitting diode, the high power light emitting diode being mounted onto a flexible circuit board. A method is also disclosed for producing such a light emitting diode arrangement.
摘要:
A shunt system includes a first catheter and a second catheter, each having a proximal end and a distal end, and at least one opening adjacent to its distal end. A proximal end of a drainage catheter is in fluid communication with the proximal end of the first catheter and the proximal end of the second catheter. A first one-way valve is disposed in fluid communication with the first catheter between its proximal end and its at least one opening. The first one-way valve effectively blocks fluid flow from the proximal end to the at least one opening. A second one-way valve is disposed in fluid communication with the second catheter between its proximal end and its at least one opening. The second one-way valve effectively blocks fluid flow from the proximal end to the at least one opening.
摘要:
A light-emitting diode arrangement includes a piezoelectric transformer having at least one output connection position, and a high-voltage light-emitting diode including a high-voltage light-emitting diode chip including at least two active regions connected in series with one another, wherein the high-voltage light-emitting diode is electrically connected to the output connection position of the piezo transformer.
摘要:
A light module has at least one light source mounted on a base, especially an LED, a housing to accommodate the base, an electrical connection element for power supply of at least one light source. An outer line of the connection element is formed by the housing, and an inner line, especially center line, of the connection element, which is at least partially enclosed by the outer line, contacts the base.
摘要:
A method for producing an illumination device is provided. The method may include providing a carrier, on which illumination means are applied, with filler material; applying an upper exterior layer on the filler material; reducing the arrangement formed by the carrier, filler material and upper exterior layer to a predetermined thickness; wherein the carrier is a flex-board, which is equipped with the illumination means.
摘要:
The invention relates to an illumination device (1) comprising at least one substrate plate (2), at least two light-emitting diodes (3) (LEDs) arranged on the same side (A) of the substrate plate (2), and at least one electrically conductive cooling device (8) arranged on the opposite side (B) of the substrate plate (2), in particular a metallic heat sink (8), wherein at least two LEDs (3) are thermally operatively connected to the cooling device (8) by means of in each case at least one thermal coupling device (9) formed from an electrically conductive material. According to the invention, the cooling device (8) has at least two regions (8a, 8b, 8c) which are electrically isolated from one another, wherein a first region (8b) is thermally and electrically operatively connected to at least one first LED (3), and a second region (8a, 8c) is thermally and electrically operatively connected to at least one second LED (3).
摘要:
The invention relates to an arrangement for driving at least two light-emitting components connected in a series circuit, wherein the series circuit is coupled to a supply voltage, in each case a switching unit with respective switching terminals is coupled in parallel connection to each of the at least two components and each switching unit has two states.
摘要:
Using resonant interactions to directly and tomographically image neural activity in the human brain using magnetic resonance imaging (MRI) techniques at ultra-low field (ULF), the present inventors have established an approach that is sensitive to magnetic field distributions local to the spin population in cortex at the Larmor frequency of the measurement field. Because the Larmor frequency can be readily manipulated (through varying Bm), one can also envision using ULF-DNI to image the frequency distribution of the local fields in cortex. Such information, taken together with simultaneous acquisition of MEG and ULF-NMR signals, enables non-invasive exploration of the correlation between local fields induced by neural activity in cortex and more ‘distant’ measures of brain activity such as MEG and EEG.