Abstract: A device for operating a discharge lamp of the short arc type having a feed device which supplies a direct current to the discharge lamp when operation starts and an alternating current afterwards, in which the feed device supplies a direct current which is smaller than the rated current to the discharge lamp at the start of operation, and a direct current which is at least as large as the rated current, afterwards. A control which ascertains whether the discharge lamp at the start of operation is in a hot or cold start operating state, and which establishes one of the following parameters based on whether the hot or cold operating state ascertained to exist: the value of the direct current which is at least as great as the rated current; the feed duration of the direct current which is at least as great as the rated current.

Abstract: In an EUV focusing mirror in which there are several thin concave nested high precision mirrors in the form of an ellipsoid of revolution, a paraboloid of revolution, a Wolter type or the like, the sides which do not constitute the reflection surfaces are made in the shape of a knife edge at the radiation incident ends of the respective mirrors in order not to be shielded by the thickness of the radiation incidence sides of the respective mirrors. Likewise, the radiation exit ends of the respective mirrors are made in the form of a knife edge. This yields an advantageous far-field distribution use of the mirrors for an EUV radiation source device and the degree of reduction of the light intensity can be made smaller than in the conventional case.

Abstract: To avoid the phenomenon of unsightly flickering in images projected by the projector, in high pressure discharge lamps—especially in high intensity discharge lamps, such as high pressure mercury lamps, metal halide lamps, and xenon lamps—that are used in projectors, even in the presence of the phenomenon of cyclical modulation of the lamp voltage by the returning the light spectrum when the light reflected by the dynamic color filter returns back through the optical system to the lamp, at least during steady operation of the discharge lamp (Ld), a target lamp current signal generation circuit (Up) acquires multiple lamp voltage detection signal (Sv) over a period that is at least as long as the color order cycle of the dynamic color filter (Of) and generates a target lamp current signal (St) based on the multiple lamp voltage detection signals (Sv) that were acquired.

Abstract: A light irradiation device and an inkjet printer equipped with the light irradiation device, the light irradiation device having a short-arc type discharge lamp with a pair of electrodes which face each other within a discharge vessel, a reflector surrounding the discharge lamp so as to reflect light from the discharge lamp, and a cylindrical lens that focuses light reflected by the reflector in a uniaxial direction in a manner forming a light irradiation zone having an elongated linear shape. Plural lamps with respective reflectors and lenses can be arranged in a row to increase the size of the linear irradiation zone formed.

Abstract: A process for production of a substrate for attachment of cells at certain positions and a substrate for attachment of cells. A support structure comprising a hydrophobic resin base material and a hydrophilic polymer layer formed on the hydrophobic resin base material. Areas of the hydrophilic polymer layer and a chemical reaction product present on a boundary surface between the hydrophilic polymer layer and the hydrophobic resin base material are removed, so as to expose areas of the hydrophobic resin base material at which cells will attach, by irradiating the support structure with UV radiation emitted from a light source via a pattern mask. The exposed areas are depressions with a controlled shape matched to the mask pattern, each of the depressions having a bottom surface which is formed by exposure of the hydrophobic resin base material.

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: Microchip testing device having a chip holder that can be exactly positioned and from which adhered sample liquid can be removed easily. The microchip testing device has a chip holder, with a cover and a box area, mounted on a measurement stage, a microchip that has an optical measurement chamber is housed in the chip holder, a light source that radiates light on the optical measurement chamber of the microchip, a detector that receives light that has passed through the optical measurement chamber, and a controller that controls the device. The chip holder has reference planes to position the microchip in two directions perpendicular to the optical axis of the optical measurement chamber and pushers that push the microchip against the reference planes, so that the microchip is positioned within the chip holder by closing the cover of the chip holder.

Abstract: A filament lamp that allows independent control of the state of luminescence of multiple filaments and that reliably prevents the occurrence of unwanted discharge between adjacent portions of neighboring filaments, even when a high voltage is injected into the filaments to achieve a desired irradiation distribution, and light-irradiation-type heat treatment device that can heat the article to be treated uniformly. The filament lamp has multiple filament assemblies, each having a filament and respective leads arrangement sequentially within a light emitting bulb, in the axial direction of the light emitting bulb. With alternating current power supplied to each filament independently, the current will be supplied with the same phase and mutually adjacent terminals of neighboring filament assemblies will have the same potential, and with direct current power supplied to each filament independently, adjacent terminals of neighboring filament assemblies will be of the same polarity.

Abstract: Electrode ablation is controlled in EUV light source device that gasifies a raw material by irradiation with an energy beam and produces a high-temperature plasma using electrodes a raw material for plasma is dripped in a space in the vicinity of, but other than, the discharge region and from which the gasified raw material can reach the discharge region between the discharge electrodes and a laser beam irradiates the high-temperature plasma raw material. A gasified high-temperature plasma raw material, gasified by the laser beam, spreads in the direction of the discharge region. At this time, power is applied on a pair of discharge electrodes, the gasified high-temperature plasma raw material is heated and excited to become a high-temperature plasma, and EUV radiation is emitted. This EUV radiation is collected by an EUV collector mirror and sent to lithography equipment.

Abstract: To provide a discharge lamp ignition device to light high-intensity discharge lamps in which, during alternating current ignition, the fluctuation of luminous flux on the reversal of polarity of the voltage impressed on the lamp is minimized and in which steady lighting characteristics of the discharge at startup are secured, a discharge lamp ignition device has a capacitor Ch connected to a transformer Th and an intermittent voltage impression arrangement Uj to drive voltage impression on the primary winding Ph, with the secondary winding Sh of the transformer Th constituted so that the voltage generated in the secondary winding Sh can be impressed overlapping the output voltage of an inverter Ui between the electrodes of the discharge lamp Ld by interposing it in the path connecting the output of the inverter Ui and the electrode for the main discharge of the discharge lamp Ld.

Abstract: Extreme ultraviolet light source device in which an EUV radiation fuel is introduced into a chamber, and high-voltage pulsed voltage from a high-voltage generator is applied between first and second main discharge electrodes, thereby producing a high-temperature plasma from discharge gas between the main discharge electrodes; EVU radiation with a wavelength of 13.5 nm is emitted. Of the EVU radiation emitted, the EUV radiation on the optical axis of the EUV collector mirror passes through a through-hole in the foil trap and through a through hole in the central support of the collector mirror, is reflected away from the optical axis by a reflector, and enters an EUV monitor. On the basis of EUV intensity signals input to the EUV monitor, a controller adjusts the power supplied from the high-voltage generator so that the EUV intensity is steady.

Abstract: An absorptiometry microchip testing device with which, after one-time startup, test results of blood analyses are automatically obtained without a special tester. The microchip testing device has a rotary drive source which can be stopped at a prescribed angle; a centrifugal rotor connected to the rotary drive source via the main shaft; a direction switching mechanism for controlling the main shaft gear; a planetary gear which engages the main shaft gear which is located on the centrifugal rotor; a chip holder which turns together with the planetary gear; a microchip which is held in the chip holder and has a part for measuring absorbance; a light source from which light is incident in the absorbance measuring part of the microchip; a detector which receives light transmitted by the absorbance measuring part; and a controller which controls movements of the rotary drive source and the direction switching mechanism.

Abstract: An ultra high pressure mercury lamp having a light emitting part, a pair of electrodes; hermetically sealed portions; part of the electrodes and metal foils installed in the hermetically sealed portions and connected to the base parts of the electrodes; and outer leads connected to the base parts of the metal foils. The metal foils have a region with a small width which is groove-shaped and with which the electrodes are connected, and a wide region which borders the region with a small width, and which has an ?-shaped end region which borders the groove of the region with a small width, in which an end groove is formed, and which extends in the lengthwise direction, a base-side ?-region which is connected to the outer lead, in which a base-side groove is formed, and a middle, flat region which extends between the end ?-region and the base-side ?-region.

Abstract: A light source device has a discharge lamp in which within the discharge vessel there is a pair of opposed electrodes, a concave reflector which has an ellipsoidal front reflector part which is provided with a light exit opening, and a spherical reflector part which borders the back end of the ellipsoidal front reflector part, is improved in that the middle between the electrodes of the discharge lamp is arranged with respect to the concave reflector such that the middle is located in front of a virtual plane which includes the boundary region between the ellipsoidal front reflector part and the spherical reflector part. The concave reflector can also have an ellipsoidal rear reflector part which borders a back end of the spherical reflector part.

Abstract: A biochemical analysis device using a microchip in which the base line of the analysis device can be stabilized. The biochemical analysis device has a centrifugal rotor which has a chip holding part for holding a microchip and which is subjected to rotary driving; a light source part; and a light detector, in which the microchip is a microchip in which the centrifugal force act by rotation of the centrifugal rotor and in which pretreatments are performed in which the measurement cell of the microchip is irradiated with light from a light source, the light which has passed through the measurement cell being received in the light detector, and measuring of the light intensity in which the quantity of light absorption by the test liquid is measured within the measurement cell and the test liquid is analyzed, while rotation of the centrifugal rotor is stopped.

Abstract: Flash discharge lamp having an arc tube in which there is a pair of opposed electrodes, a rod-shaped trigger electrode which runs along the outside surface of the arc tube in its lengthwise direction; and a sealed tubular body which jackets the trigger electrode and has a hermetically sealed arrangement containing a metal foil. The trigger electrode has a recessed part on its surface in the vicinity of the metal foil and the recessed part is at least partially filled with the material of which the sealed tubular body is formed.

Abstract: Phototherapy device in which, within a housing, there is a light source, and in which light with given wavelengths emerges from a light exit opening of the housing, at least two filters being located between the light source and the light exit opening, each of which each absorbs light of different wavelength ranges, the filter on a light incidence side absorbing light with shorter wavelengths than the filter on the light exit side.

Abstract: To shorten the luminous flux rise time and prevent melting/deformation of the projections in the initial ignition period of high pressure discharge lamps that have a sealed mercury volume of no less than 0.20 mg/mm3, a power supply device feeds a current that exceeds the maximum current value of the constant power control period to the high pressure discharge lamp during a first control period from the initial discharge until the lamp voltage reaches a specified lamp voltage and causes a switch to constant power control, and then, during the following period until a change to steady power control, the power supply device feeds it a current that is less than the maximum current during regular operation.

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. The inkjet printer has a head part with the above described light irradiation apparatus, the light from which sets ink of the photosetting type which has been applied to the recording medium.

Abstract: A phototherapy device which obtains an advantageous therapeutic effect and suppresses side effects at least to a certain degree by irradiation of diseased sites with therapeutic radiation with a spectrum in the UV-B radiation wavelength range that is continuous at least in the wavelength range of at most 303 nm with a lower boundary wavelength value of at least 297 nm. The phototherapy device has a light source which emits light with a spectrum having an emission peak in the wavelength range from 300 nm to 315 nm and which is continuous in the wavelength range of this emission peak at least up to 295 nm; and a radiation emission window in which the light from the light source is incident and via which the therapeutic radiation is emitted with a spectrum with a lower boundary value in the wavelength range from 297 nm to 303 nm.