Abstract: A phototherapy device using excimer radiation in which, by skillful use of the individual peak wavelength of 308 nm and of the emission range of shorter wavelengths than 308 nm, the therapy effect is enhanced, and in which, at the same time, harm can be reduced is achieved using a XeCl excimer lamp and in which diseased sites of skin disorders are irradiated with UV-B radiation with an optical filter being used for changing the spectral shape of the UV-B radiation with which the diseased sites are irradiated.
Abstract: A device for heating a substrate with light from a flash lamp having a semiconductor switch connected in series to the flash lamp. After triggering of a trigger electrode of the flash lamp, a first drive signal and a second drive signal are output from a gate circuit. The time period when the semiconductor switch is on due to the second drive signal is longer than the time period that the semiconductor switch is on by the first drive signal. Then, the semiconductor switch is switched on and off by the first drive signal and the substrate temperature is increased to a temperature, which is lower than the desired temperature to be achieved, and is maintained a that temperature for a short time, after which the surface temperature of the substrate is increased to the desired target temperature.
Abstract: A light source device which can also advantageously control the growth of the projection using the DMD type is achieved in a light source device which has an ultrahigh pressure discharge lamp) in which the silica glass discharge vessel is filled with greater than or equal to 0.15 mg/mm3 mercury and bromine; a feed device; an oval reflector; and a color wheel by the electrode on the side of the opening of the oval reflector of the discharge lamp having an increased diameter, and the relation 0.06<W/I2<0.96 between the volume W (mm3) of the tip area with increased diameter and the current value I being satisfied.
Abstract: To provide a flickerless discharge lamp which can remove hydrogen by a simple and safe means even if the lamp is a large discharge lamp with high pressure when lit, the discharge lamp has a pair of electrodes and a hydrogen getter (4) in the interior of an arc tube, the hydrogen getter (4) being formed of a container (41) made of metal which is hydrogen permeable and a hydrogen absorbent body (42) that is composed of a metal which can absorb hydrogen that is enclosed inside of the container (41) and is fixed to an inside wall of the container (41).
Abstract: A filament lamp having a filament and an internal lead in which the filament is insulated from contact with the internal lead and prevent from moving during operation to maintain a uniform distribution of light. To this end, the filament lamp includes a luminous tube having an inner wall, and opposing ends on which sealing parts are formed. Multiple filaments are sequentially disposed inside the tube in an axial direction, and internal leads are connected to each filament. An insulating wall is provided along the inner wall of the luminous tube in the axial direction and is disposed around at least one of the multiple filaments. Internal leads running partly parallel to the filaments are positioned between the luminous tube and insulating wall and do not engage the ring supporters of the multiple filaments, which could cause the filaments to move and distribute light in a nonuniform pattern.
Abstract: To avoid a decline in the reflectivity of an ultraviolet reflection film caused by lighting for an extended period of time and providing a uniform illuminance an excimer lamp has a silica glass discharge vessel with electrodes on opposite sides of the discharge vessel, wherein excimer discharge is generated in the discharge space of the discharge vessel, wherein an ultraviolet reflection film made of silica particles and alumina particles is formed on a surface exposed to the discharge space and wherein the mean particle diameter of silica particles is at least 0.67 times as large as the mean particle diameter of the alumina particles. The alumina particles in the ultraviolet reflection film preferably constitute at least 5 wt % and more preferably at least 10 wt % of the sum of silica particles and alumina particles.
Abstract: A filament lamp has a bulb comprised of a straight light emitting tube from which a pair of flat hermetically sealed portions extend, a plurality of coiled filaments arranged within the light emitting tube, in the tube axis direction a pair of internal leads are connected to ends of the filament by a respective one of a plurality of metal foils that are embedded in the hermetically sealed portions, and external leads are connected to the metal foils. The width of metal foils embedded in the hermetically sealed portions is increased so as not to cause them to melt even when an electric current to be supplied to the filament lamp is increased, the hermetically sealed portions being made wider than the external diameter of the light emitting tube and the width between outer margins of the metal foils in a direction at right angles of the tube axis is greater than the internal diameter of the light emitting tube.
Abstract: To provide a light emitting device that does not experience a decline in radiant efficiency in use, enables luminous flux from LED elements to be increased, and white light of good color rendering to be produced, and heat generated by the LED elements to be smoothly transmitted to an SiC fluorescent substrate. The light emitting device is provided with first LED elements for emitting UV radiation, second LED elements for emitting visible light, an SiC fluorescent substrate that is mounted with the first LED elements and the second LED elements and is made of SiC doped with at least one of B and Al as well as N and emits visible light when excited by radiation emitted from the first LED elements, and has a body made of inorganic material.
Abstract: A xenon lamp having a lamp tube made of silica glass containing titanium oxide and having a discharge chamber with a light emitting part containing xenon and in which a cathode and an anode are arranged in opposition to each other, the cathode and anode being mounted on an end of a respective lead rod, the lamp tube also having side tube parts extending from each of opposite sides of the light emitting part, each lead rod being sealed by a gradient binding part which is arranged in a respective side tube part, and the side tube parts having a narrowed shrink part in a region facing the light emitting part, wherein a conductive film is provided on an outer surface area of the shrink part and an adjoining area of an outer surface of the light emitting part at the cathode side of the lamp tube; and wherein the conductive film is electrically connected to the cathode.
Abstract: A light emitting device that has a radiant efficiency that does not decline in use, enables luminous flux to be increased by a high electric current, and produces white light with good color rendering and a method for producing a light emitting device capable of smoothly transmitting heat generated by LED elements to a carrier substrate. The radiation emitting device has first LED elements for emitting UV radiation, second LED elements for emitting visible light, a substrate made of an inorganic material and which carries the first LED elements and the second LED elements, a body made of inorganic material containing the first LED elements, the second LED elements and the substrate, and an SiC fluorescent screen that is doped with at least one of B and Al as well as N and emits visible light when excited by radiation emitted from the first LED elements.
Abstract: To provide a photo-irradiation type heat treatment apparatus that eliminates the adverse influence of a light transmitting window on the temperature distribution of an article to be treated without losing the original function of a reflecting mirror a photo-irradiation type heat treatment apparatus in which heat treating of an article is performed by irradiating the article with light emitted from multiple filament lamps through a light transmitting window, by providing the apparatus with a reflecting mirror having an opening at its central area so that cooling air can pass therethrough and by providing an air permeable reflector so as to cover the opening in the reflecting mirror.
Abstract: An extreme ultraviolet (EUV) light source device and foil trap, the device including a vessel; an EUV radiating species supply means that feeds an extreme ultraviolet radiating species into the vessel; a discharge part with discharge electrodes that heat and excite the EUV radiating species and generate a high-temperature plasma; a collector mirror collecting EUV radiation emitted from the plasma; the foil trap installed between the discharge part and the mirror; an extractor part extracting the collected radiation; and an evacuation means exhausting and regulating pressure within the vessel. The foil trap includes foils extending radially from a main axis thereof to capture debris from the light source, while allowing the emitted radiation to pass through a region thereof to the mirror. A length of at least part of the foils in directions parallel to the main axis is shorter in positions close to the main axis than distant therefrom.
Abstract: To provide the structure of a filament lamp having a plurality of independent power supply pathways, the structure being capable of preventing the power supply pathways from electrically shorting to each other, a filament lamp formed of a straight-tube shaped luminous part having multiple filaments (F1, F2, F3) divided in the axial direction, and sealing parts (20) on each of opposite ends of the luminous part (10) in which are embedded metal foils (31, 32, 33) corresponding to the number of filaments in an aligned manner, and leads for supplying electricity independently to each filament, the luminous part (10) having a first housing space (11) for housing the filaments and a second housing space (12) for housing the leads (51, 52, 53), the housing spaces be connected and extending in the axial direction.
Abstract: A discharge lamp of the short arc type has a bulb with an arc tube and sealing tubes extending at opposite sides of the arc tube and which contains a discharge gas and a pair of opposed electrodes supported on lead pins which protrude from the outer end of the sealing tubes, the lead pins being affixed to graded glass in the sealing tube. A cooling fin surrounds the outer surface of one of the sealing tubes; and is formed of a pair of plate-shaped bodies each of which has a curved portion that contacts an outer surface of the sealing tube a strip-shaped portion extending radially from each of opposite edges of the curved portion. The strip-shaped portions of the plate-shaped bodies positionally overlap, and cooling openings are formed in the strip-shaped portions of only one of the plate-shaped bodies. Preferably, a gap is formed between the plate-shaped bodies.
Abstract: A filament lamp includes multiple filament assemblies having filaments connected to paired leads, arrayed in order within a light emitting tube and following a tube axis thereof. Each lead is electrically connected in a seal area. Each filament is powered independently. The light emitting tube includes insulating walls or inner tubes between the filaments and leads that have openings through which the leads pass, and located along the tube axis in proximity to the inner wall of the light emitting tube. Multiple lead accommodation spaces corresponding to the number of leads are provided in the light emitting tube by the insulating walls with each lead passing through an opening in the insulating wall and placed without short circuits in its lead accommodation space.
Abstract: A light irradiation apparatus in which high peak irradiance is obtained and the heat influence on the article being irradiated with light is reduced, and also an inkjet printer which has such a light irradiation apparatus in which pictures with high image quality can be reliably made and the amount of heat influence on the recording medium is low is achieved using a light irradiation apparatus having a discharge lamp of the short arc type and a reflection component for reflecting the light of this discharge lamp. The light of the discharge lamp is radiated in a state in which it is focused by the reflection component so as to extending linearly on the light irradiation area.
Abstract: Light source device, including an alternating current high-pressure mercury lamp having a pair of opposed electrodes within a spherical light-emitting part containing at least 0.15 mg/mm3 of mercury and 10?6 ?mol/mm3 to 10?2 ?mol/mm3 of halogen, and cylindrical hermetically sealed portions extending from both ends of the light-emitting part. External leads protrude from the ends of the light-emitting part. A reflecting mirror has a concave reflecting part surrounding the light-emitting part and a cylindrical neck part. An adhesive fills a periphery one of the hermetically sealed portions in the area of the external leads in a manner fulfilling the relationship L1/R?0.5 where L1 (mm) is the length along the hermetically sealed portion filled with an adhesive and R (mm) is the diameter of the hermetically sealed portions. Feed wires connect to the external leads and openings for the feed wires can be formed in the reflecting part with flexible tubes between them.
Abstract: A light irradiation device that is capable of good irradiance uniformity in the lengthwise direction and that is applicable to an inkjet printer. A light-emitting portion of a short-arc type discharge lamp is positioned at the first focal point of a reflector that has a reflecting surface in the shape of an ellipsoid of revolution, and the light from the discharge lamp is reflected by the reflector and is focused at the second focal point; after which the light is incident on multiple, columnar rod lenses 14. Of the light that is incident on the rod lenses, the light along the axial direction is focused at the second focal point of an elliptical reflector without being affected by the rod lenses, and the light along the direction perpendicular to the axial direction is focused by the rod lenses and then spreads and irradiates the light irradiation surface.
Abstract: A heating device of the light irradiation type having an article to be heated, a guard ring located on the periphery of that article, multiple lamps located above the article to be heated and the guard ring, and a reflecting mirror located above the lamps, in which a light diffusion part is located in the upper region corresponding to the article to be heated so that the diffused light projects onto the entire surface of the article to be heated. The light diffusion part can be formed, for example, on a reflecting mirror, an optically transparent window part located between the article to be heated and the lamps or a light diffusion area formed on the light-emitting bulbs of the lamps. The size of the region occupied by the light diffusion part is such that diffused light is not projected to the guard ring.
Abstract: An LED light source device using light from luminescent elements at a high level of uniformity and efficiency, and to conduct irradiation with a high level of design freedom an LED light source device is equipped with luminescent elements and a translucent light-guiding member. The translucent light-guiding member has a central convex lens with a first cylindrical light-guiding part formed on the outer periphery of the central convex lens and a second cylindrical light-guiding part formed on the outer periphery of the first cylindrical light-guiding part, such that an air layer is formed between the outer peripheral surface of the first cylindrical light-guiding part and the inner peripheral surface of the second cylindrical light-guiding part, the outer peripheral surface of the first cylindrical light-guiding part and the outer peripheral surface of the second cylindrical light-guiding part being rotated quadratic surfaces with the same focal point.