Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge lamp without a capillary tube or a capillary sealing part, and enable to have a high-temperature sealing part with an action temperature of the lamp increased so as to bear a pure metal fill. SOLUTION: A high-intensity arc discharge lamp having a short metal seal plug running hotter than typical capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal. Corrosive fill materials, such as halogens are excluded. Zinc may be used, too, in starting the lamp. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge tube for use in illumination requiring an intense luminous source. SOLUTION: The discharge tube 1 has a swollen shape and is equipped with an end sump 17 in hemispherical shape. The tube in swollen shape is a hollow body 6 symmetrical about the axial direction, and the hollow body surrounds a discharge chamber 12. The hollow body is formed from polycrystalline dysprosium oxide including a luminous dopant emitting one or more visible ray wave-lengths in case it is stimulated with radiations generated by electric discharging. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge envelop having an aluminum oxide member bonded by expansion reaction without a defect wherein high heat loss occurs by radiation from a hat surface caused by high heat mass of a PCA hat, and serious heat stress which may cause a high incidence rate of a crack is induced. SOLUTION: The ceramic discharge envelop has a ceramic body, and at least one aluminum oxide member which is air-tightly sealed in the ceramic body, and is expanded, reacted, and bonded. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an HID lamp reigniting quickly without using extremely high voltage. SOLUTION: A first starting electrode includes a thermal machine member. In case the thermal machine member is in a low-temperature state, an inner side terminal part of the first starting electrode is located at a first position, and in case it is in a high-temperature state, the inner side terminal part of the first starting electrode is located at a second position. In the low-temperature state, an impedance which goes from an outer side terminal part of the first starting electrode to an inner side terminal part of a second starting electrode through the inner side terminal part of the first starting electrode, is lower than an impedance which goes from an outer side terminal part of a first main electrode to an inner side terminal part of a second main electrode through an inner side terminal part of the first main electrode. In the high-temperature state, an impedance which goes from the outer side terminal part of the first starting electrode to the inner side terminal part of the second starting electrode through the inner side terminal part of the first starting electrode, is higher than an impedance which goes from the outer side terminal part of the first main electrode to the inner side terminal part of the second main electrode through the inner side terminal part of the first main electrode. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve operation of a metal halide arc-discharge lamp. SOLUTION: The lamp includes the outer tube 12 having a metal-cap end part 12a arrayed along an axis line 14 in a longitudinal direction of the outer tube, an intermediate part 12b, and a dome-shaped end part 12c. Two lead-in wires 34, 36 arranged apart at an interval are sealed in the metal-cap end part 12a while being extended into the outer tube 12. A U-shaped frame 38 is substantially positioned in the outer tube 12. The U-shaped frame is composed of a glass tube 26a. A light source 16 has an arc-discharge capsule 16b positioned in the frame 38. A confinement container 18 is arranged apart from the arc-discharge capsule 16b at an interval while surrounding the arc-discharge capsule. The confinement container 18 includes a transparent structure 19. The transparent structure is mounted to the frame 38. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic metal halide lamp for a rapid starting application which can be used for fixture for a rapid starting application and for other usages. SOLUTION: The ceramic metal halide lamp is provided with a ceramic discharge tube composed of dysprosium oxide and has a starting time of less than 50% of a lamp of the same construction and operation provided with a ceramic discharge lamp composed of polycrystalline aluminium oxide. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To make the conformity by passing through a small hole of a standard reflector and the focusing on an existing optical device possible by installing an outside conductor assembly comprising a cylindrical outside conductor, an outside ring, a cage wire, and the like, and a central conductor assembly comprising a central conductor and the like, and applying high frequency power to a lamp capsule. SOLUTION: An outside conductor assembly 30 contains one cylindrical outside conductor 34, one outside ring 36, and a plurality of cage wires 40, and the cage wires 40 form cage structure. A central conductor assembly 28 contains one hollow cylindrical central conductor 32, and the central conductor 32 is coaxially positioned to the cylindrical outside conductor 34 on an applicator axis 38. A coaxial electric field applicator 16 comprising the outside conductor assembly 30 and the central conductor assembly 28 is passed through an opening on the back of a reflector and projected, and the projection of a shadow caused by the cage wires 4 can be minimized by making the diameter of the wire small.
Abstract:
PROBLEM TO BE SOLVED: To provide a new high illuminance discharge lamp (HID) and a method of starting the same. SOLUTION: The high illuminance discharge lamp comprises a starting gas filled in a light transmission container, a filling capable of vaporizing, and only one electrode. The only one electrode generates high illuminance discharge during driving of the lamp and is connected to a lead wire extending to the outside of the sealed container. The grounding of the electric lines of force emitted from the electrode during the driving of the lamp is located on the outside of the container. The grounding may be a reflector for the lamp having a conductive surface. By supplying a high frequency power to the lead wire, high illuminance discharge is started. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide lamp which has high intensity-high color rendering capacity in a small type and has a light source resistant to inverse combustion by molding a constricted part in an almost central part of a light transmissive vessel, increasing power density of electric discharge by this constrcted part, filling the vessel with a volatile filling substance, and exciting the filling substance up to a light emitting condition. SOLUTION: An electrodeless high intensity discharge lamp (EHID) 10 for a projection device has a small capsule 12, and the small capsule 12 has a constricted area 14 in a central part. This constricted area 14 supplies high power density by compressing plasma in the capsule. This focus of the projection device is constant until the service life of the lamp 10 is completed since this device is electrodeless. Since an arc tube or the capsule 12 is increased in a thickness in the vicinity of the constricted area 14, heat can be radiated by heat conduction through glassy silica.
Abstract:
PROBLEM TO BE SOLVED: To provide a starting auxiliary means with no mercury contained and to consequently provide a means capable of making a metal halide lamp perfectly not contain mercury. SOLUTION: The starting auxiliary means is constituted of a UV permeable capsule having a cavity in which iodine and inactive gas is sealed, and at this time, when the iodine is excited, it emits a UV ray and lowers starting voltage of the lamp.