Abstract: A radiation-emitting semiconductor chip (1) having a semiconductor layer sequence (3) comprising at least one active layer (2) that generates an electromagnetic radiation, and having a passivation layer (12) arranged on the radiation-emerging side of the semiconductor layer sequence (3), it being possible to set the degree of transmission of the semiconductor chip by means of the passivation layer.

Abstract: Apparatus and procedure for the in situ measurement of quantities of polymer printed onto supports A source of radiation 2 sends electromagnetic radiation onto a droplet 9, 10 of polymer solution or polymer dispersion, which is printed onto a support 4. A detector 3 measures the transmitted or re-emitted radiation. Controlled by a comparator device 6 and a control unit 5, the printing parameters are corrected in situ, if necessary. In this manner, a controlled adjustment of the layer thickness of organic light-emitting diodes and therefore luminosity and color perception can be achieved.

Abstract: An LED lamp and a method of making an LED lamp in which the lamp includes a heat conductive post with slots in an exterior of the post, and in which a separate LED assembly is inserted into each of the slots, where each of the LED assemblies has a substrate with an LED at a first end thereof, which is inserted into the slot first, and an electrical conductor that extends from the LED to a second end of the substrate. The electrical conductor is connected to a circuit board that is inside a hollow bottom of the post. A reflector and heat sink are attached to the bottom of the post.

Abstract: An in-line coaxial cable connector (10) has an electrically insulating member (32) that is fitted over a first electrical contact (22) and has a first end (32a) and a second end (46) extending over a second end (26) of the first electrical contact (22). The terminus of the second end (46) includes a lip (48) forming an alignment area for the reception of a mating electrical contact. The lip (48) protects the contact beams of the contact (22) and eliminates the possibility of the contact (22) mismating with its complement on a mating connector.

Abstract: The present invention relates to an arrangement of semiconductor diode lasers stacked on top of one another, which is arranged on a substrate (1). A first diode laser (12) is arranged on the substrate (1), and a second diode laser (13) is arranged on the first diode laser (12). Between the first diode laser (12) and the second diode laser (13) there is a contact layer (6). The contact layer (6) comprises a first conductive layer (18) of a first conduction type and a second conductive layer (20) of a second conduction type and an interlayer (19) which is arranged between the first and second conductive layers (18, 20).

Abstract: A method of producing a ceramic metal halide discharge lamp having a monolithic seal between a sapphire (single crystal alumina) arc tube and a polycrystalline alumina (PCA) end cap. The method includes the steps of providing an arc tube of fully dense sapphire and providing an end cap made of unsintered compressed polycrystalline alumina powder doped with magnesium oxide and yttrium oxide. The end cap is heated until it is presintered to remove organic binder material at a low temperature relative to the sintering temperature. The presintered end cap is placed on an end portion of the arc tube to form a close interface between the two. The presintered end cap and adjacent arc tube are then heated to until the end cap is fully sintered onto the arc tube and the sapphire tube grows into the end cap. A monolithic seal is formed along the interface between the end cap and the arc tube as the sapphire tube grows into the polycrystalline alumina end cap.

Abstract: A surface emitting semiconductor laser includes a semiconductor chip (1), which emits radiation (12) and contains a first resonator mirror (3). A second resonator mirror (6) is arranged outside the semiconductor chip (1). The first resonator mirror (3) and the second resonator mirror (6) form a laser resonator for the radiation (12) emitted by the semiconductor chip (1). The laser resonator contains an interference filter (9, 17), which is formed from an interference layer system comprising a plurality of dielectric layers.

Abstract: The invention relates to an optically pumped semiconductor laser apparatus having a vertical emitter (1) which has a central waveguide (3) and a quantum well structure which is arranged within the central waveguide (3) and has at least one quantum layer (5), and a pump radiation source, which optically pumps the quantum well structure and comprises at least one pump waveguide (9) in which the pump radiation (11) is guided. The width (A) of the central waveguide (3) is greater than the width (B) of the pump waveguide (9), with the width (A) of the central waveguide (3) and the width (B) of the pump waveguide (9) being matched to one another such that the quantum well structure of the vertical emitter (1) is pumped uniformly.

Abstract: The invention is directed to an optically pumped surface-emitting semiconductor laser device having at least one radiation-generating quantum well structure and at least one pump radiation source for optically pumping the quantum well structure, whereby the pump radiation source comprises an edge-emitting semiconductor structure. The radiation-generating quantum well structure and the edge-emitting semiconductor structure are epitaxially grown on a common substrate. A very efficient and uniform optical pumping of the radiation-generating quantum well structure is advantageously possible with this monolithically produced semiconductor laser device. Methods for manufacturing inventive semiconductor laser devices are also specified.

Abstract: An encapsulation for a device is disclosed. In one embodiment, spacer particles (270) are selectively located in the device region. The spacer particles (270) prevent a cap mounted on the substrate (460) from contacting the active components, thereby protecting them from being damaged.

Abstract: An incandescent lamp may be formed from a shell having an exterior side and an interior side defining a cavity, and with an internal wall defining a through passage extending from the exterior side to the interior side. A light source is located in the cavity facing the interior side, and coupled to electric lamp leads extending through the passage. A heat radiator assembly is adjacent the exterior side, and includes heat-dissipating surfaces exposed to air. An integral power supply is enclosed in the heat radiator assembly and electrically connected to the light source through the electric lamp leads. A threaded base having exterior electrical contact points is electrically connected through base leads to the integral power supply. The shell, radiator assembly and base are mechanically coupled as a unit. A lens may cover the shell to enclose the cavity and light source.

Abstract: A dispensable brazing paste useful in lamp manufacturing includes a brazing powder and a water soluble vehicle that has water, glycerin, a binder, and a dispersant that includes ammonium stearate and ammonium citrate. Preferably, the brazing powder is 84-87 wt % of the paste, the water is 3-5 wt %, the glycerin is 3-4 wt %, the binder is 1-2 wt %, and the dispersant is 4-6 wt %, and a weight of the water is within a range of 60-90% of a weight of the dispersant. The brazing paste does not include the troublesome organic solvents of the prior art.

Abstract: A ceramic discharge vessel for a lamp includes a hollow body, two capillaries that extend from a same side of the body, and a strengthening web between and joining the two capillaries to each other.

Abstract: A lamp (10) includes an envelope (12) having a body (14) with a light source capsule (16) contained therein and ending in a hollow base (18) that terminates in a conical end (20). A circuit board (22) is positioned within the hollow base (18) and includes a triangular portion (24) that is closely fitted within the conical end (20). A temperature sensitive, voltage reducing component (28a) is positioned near the apex (30) of the triangular portion (24).

Abstract: A method for reducing the loss of magnesium during the sintering of aluminum oxide articles, such as ceramic discharge vessels for lighting applications. Magnesium oxide is added to aluminum oxide articles to control grain growth during sintering, but the sintering causes magnesium loss from the article. In order to address this problem, one or more aluminum oxide articles that are enriched in magnesium oxide are added to the sintering furnace to stem the loss of magnesium oxide in the remaining articles. The enriched aluminum oxide article is made by soaking a porous aluminum oxide article in an aqueous solution of magnesium nitrate and heating the porous article to convert the magnesium nitrate to magnesium oxide. The enriched articles may then be added in one or several locations to the sintering furnace, where the magnesium from the enriched articles is released to suppress the magnesium loss.

Abstract: A method for the connection of two wafers (11, 12), in which a contact area (15) is formed between the wafers (11, 12) by placing the two wafers one on top of the other, and in which the contact area (15) is heated locally and for a limited time. A wafer arrangement is also described in which two wafers (11, 12) which have been placed one on top of the other and between whose opposite surfaces a contact area (15) is located. The wafers are connected to one another at selected areas (21) of their contact area.

Abstract: An electric lamp may be formed from a lamp capsule including an electric light source enclosed in an envelope. A skirt mechanically couples to the base, and extends from the base to a lip edge offset axially from the threaded exterior wall. The lamp includes a reflector having an interior side with a reflective portion, an exterior side, the reflector being formed with an interior wall defining a through passage extending between the interior side and the exterior side. The lamp capsule is extended through the through passage to locate the light source opposite the reflective portion. The skirt defines an isolated cavity retaining the seal end of the lamp capsule, and may further include an insulation plate intermediate the lamp and any circuitry.

Abstract: A ceramic discharge vessel in a green state prior to assembly includes a first discharge vessel part in a green state, a second discharge vessel part in a green state, wherein the first and second discharge vessel parts form a discharge vessel when joined together, and a first capillary attached to the first discharge vessel part and a second capillary attached to one of the first and second discharge vessel parts. To facilitate joining the first and second discharge vessel parts, a first removable handle is temporarily attached to the first discharge vessel part for maneuvering the first discharge vessel part, and a second removable handle is temporarily attached to the second discharge vessel part for maneuvering the second discharge vessel part.

Abstract: A ceramic discharge vessel for a high-intensity discharge lamp includes a hollow body and two capillaries attached to the body. The capillaries have respective electrodes therein, where portions of the electrodes inside the body are spaced from each other and have longitudinal axes that are not coplanar. That is, in contrast to the prior art where the longitudinal axes are coplanar, the capillaries herein are moved (in effect, rotated) to positions in which a first plane defined by a longitudinal axis of one capillary and a first point where a second capillary is attached to the body is intersected by a longitudinal axis of the second capillary only at the first point.

Abstract: A tungsten-halogen or HID parabolic reflector lamp construction and assembly method is described that improves lamp performance by increasing the area of the parabolic reflective surface while reducing manufacturing cost by simplifying assembly. The reflector has a small opening just large enough to accommodate the light source capsule and a reverse draft angle in the neck. The capsule is attached directly or indirectly to a standard medium screw threaded base minimizing the number of separate lamp components and assembly operations.