Abstract: A light source module and a projection apparatus including the light source module, a light valve, and a lens are provided. The light source module includes a cover, a light emitting device, a lead wire, a trigger wire, and at least one fixing wire. The light emitting device is partially disposed in the cover and includes a light source and a first pillar, wherein the light source is connected to the first pillar and provides an illumination beam. The lead wire is connected to the light source and is position-limited between the cover and the first pillar. The trigger wire is disposed on the first pillar and is electrically connected to the lead wire. The fixing wire is position-limited between the cover and the first pillar. One end of the fixing wire is connected to the first pillar, and another end of the fixing wire is position-limited to the cover.

Abstract: A spark plug includes an insulator formed of a ceramic material. The ceramic material comprises Al2O3 in an amount of 98.00 wt % to 99.50 wt %; Group 2 oxides in an amount of 0.16 wt % to 0.70 wt %; SiO2 in an amount of 0.25 wt % to 0.75 wt %, Group 4 oxides in an amount of 0.01 wt % to 0.16 wt %, Group 1 oxides in an amount less than 0.0060 wt %, and P2O5 in an amount of less than 0.0040 wt %. The Al2O3 is formed of particles having a D50 median particle size by volume of 1.2 ?m to 1.8 ?m. The ceramic material is pressed, sintered, and formed to a predetermined shape. The sintered ceramic material includes a glass phase comprising the Al2O3, Group 2 oxides, and SiO2. The sintered ceramic material also includes secondary crystals of calcium hexa-aluminate (CaAl12O19) spinel (MgAl2O4), anorthite (CaAl2Si2O8), and mullite (Al6Si2O13).

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: An electrode-less fluorescent lamp and a method for manufacturing the same are disclosed. The electrode-less fluorescent lamp includes a closed-loop tubular discharge tube enclosing a discharge gas. The tube is coated with a fluorescent layer on an inner surface and is made of a light-transmissive material. The lamp also includes at least one core surrounding at least a portion of the discharge tube. The lamp includes at least one coil wound around the at least one core. The coil supplies electromagnetic power to the discharge tube by producing a time-varying magnetic field in the core. In addition, the lamp includes a radio frequency (RF) power source supplying RF power to the coil so that discharge generated in the discharge tube is maintained by said RF power.

Abstract: The present invention relates to a lamp device using a high-pressure vapor discharge lamp, particularly to an improvement for controlling the influence of the generation of heat, which accompanies an increase in lamp power and a reduction in the size of a reflector. A lamp device of the present invention comprises a discharge lamp having an arc tube enclosing luminescent materials and having a pair of opposing electrodes disposed therein and a pair of sealed portions extending from the arc tube; a reflector which reflects light radiated by the discharge lamp; a transparent member covering an open end of the reflector and accommodating the discharge lamp in a space between the transparent member and the reflector; and means for preventing an excessive temperature rise wherein the temperature rise of welded parts of wiring members electrically connected to the electrodes of the discharge lamp is restricted.

Abstract: A buffer is provided for protecting the electron beam collector of a traveling wave tube. The collector comprises an elongated tubular wall, an elongated tubular insulating wall of one type of material, an elongated cylindrical electrode of another type of material coaxially positioned within the insulating wall, and the buffer interposed between the electrode and the insulating wall. The buffer comprises a continuous web of buffer material capable of being bonded to dissimilar insulating wall material and electrode material. The web having an alternating pattern of corrugations, the vertices of the corrugations are generally planar which define two generally parallel, planar surfaces which in turn are adapted for bonding to the insulating wall and the electrode.

Abstract: A low pressure sodium vapor lamp including a sodium vapor discharge tube within an outer envelope. The outer envelope is partially coated by a light reflector defining a light transmission aperture for desired directional light output. The outer envelope is additionally coated with an infrared reflective coating defining a heat transmission aperture at a location separate from the light transmission aperture. The heat transmission aperture acts as a heat sink. The area of the inner discharge tube corresponding to the heat transmission aperture thus becomes the coolest portion of the discharge tube, the "cold spot" of the lamp where excess sodium is condensed.