摘要:
In a discharge lamp having a discharge medium sealed in a discharge tube assembly including electrodes for producing a discharge, a nitride layer is formed on a surface of an envelope tube of the discharge tube assembly. The nitride layer is formed by substituting an oxygen component of an oxide constituting the tube wall of the envelope tube with nitrogen, and exhibits a continuous and smooth reduction in nitride content in the direction of depth. This chemically stable nitride layer prevents a reaction between the discharge medium and the tube wall material, and removal or injection of the discharge medium. In addition, since the nitride layer also exhibits a continuous change in thermal expansion coefficient in the direction of depth, the thermal stress is reduced, and cracking, peeling, removal, and the like do not occur.
摘要:
A headlight for a vehicle includes a metal halide lamp and a reflector having a focus and reflecting a light beam, emitted from the lamp, in a forward direction from the front of the vehicle. The lamp has a luminescent tube in which at least sodium is sealed, and positive and negative electrodes. The respective distal ends of the electrodes are located in the luminescent tube and spaced at a predetermined distance from each other. The lamp is positioned so that a straight line connecting the respective distal ends of the electrodes is horizontal and passes through the focus, and so as to meet the following requirement:0.ltoreq.L0/L1.ltoreq.0.4,where L0 is the distance between the focus and the distal end of the negative electrode, and L1 is the distance between the distal ends of the electrodes.
摘要:
A low pressure discharge lamp apparatus has a low pressure discharge lamp with an arc tube. The arc tube has a first end and a second end, each with electrodes which define a discharge space therebetween. A mercury/rare gas is sealed in the arc tube. The low pressure discharge lamp apparatus further has a lighting circuit apparatus for lighting the lamp by supplying a current with a polarity reversed for each half cycle to electrodes in the first and second ends of the arc tube. The lighting circuit apparatus supplies, to the lamp, a current whose waveform has a flat peak for each half cycle and a maximum current value of the current is restricted to less than a level in which the excitation of mercury atoms is saturated.
摘要:
In order to maintain an ultraviolet-ray intensity of a metal halide lamp for a long period, the present invention provides a high intensity discharge lamp comprising an arc tube having electrodes at its both ends, and a rare gas, mercury, iron, a halogen and silver enclosed in the tube, wherein a gram atom ratio of silver to iron is 0.05 to 0.2. The present invention also provides a high intensity discharge lamp comprising an arc tube having electrodes at its both ends, and a rare gas, mecury, iron, a halogen, tin and silver enclosed in the tube, wherein ([Fe]+[Sn])/[J] 1, where [Fe], [Sn], ]Ag] and [J] are, respectively, gram atoms of iron, tin, silver and the halogen.
摘要:
A high-efficacy, high power ultraviolet radiation lamp is disclosed. Electrodes are respectively provided at two ends of a discharge tube, and at least a rare gas is sealed in the discharge tube. The discharge tube is curved in a U shape. A reservoir for reserving a radiant material for radiating ultraviolet rays projects from the discharge tube. An isolating section is provided to surround at least the reservoir. The isolating section adjusts the temperature of the reservoir and supplies an appropriate amount of radiant material into the discharge tube.
摘要:
According to one embodiment, a solid state imaging device includes a first SiGe layer provided at an uppermost layer of a photoelectric conversion layer from the viewpoint of an incident light side, and a second SiGe layer provided under the first SiGe layer in the photoelectric conversion layer and having a higher Ge concentration than the first SiGe layer.
摘要:
A void-containing resin molded product consisting of a polymer having crystallinity, wherein the void-containing resin molded product has elongated voids whose longitudinal directions are aligned in one direction, wherein the elongated voids satisfy the expression h(avg)>T/100, where h(avg) denotes an arithmetic average of h(i)s which each denote a distance from a surface of the void-containing resin molded product to a center of each of 10 voids whose centers are closer to the surface of the void-containing resin molded product than are centers of any other voids in a cross-section of the void-containing resin molded product that is perpendicular to a direction in which the voids are aligned, the 10 voids being selected from voids in a region defined by one straight line which is parallel to a thickness direction of the void-containing resin molded product and another straight line which is parallel to and distant by 20×T from the one straight line; and T denotes an arithmetic average thickness of the cross-section, and wherein the elongated voids have a ratio L/r of 10 or more, where L denotes an average length of the voids (in μm) in a direction in which the voids are aligned, and r denotes an average length of the voids (in μm) in a thickness direction which is perpendicular to the direction in which the voids are aligned.
摘要:
The present invention provides a void-containing resin molded product having high heat insulation properties and a method for producing such a molded product. The present invention also provides an image-receiving film or sheet that includes the void-containing resin molded product to provide favorable printing characteristics and is intended for use in a sublimation transfer recording material or a thermal transfer recording material.The void-containing resin molded product consists of a crystalline polymer and has voids therein, wherein the resin molded product has a ratio X/Y of 0.27 or less, where X denotes a thermal conductivity (in W/mK) of the void-containing resin molded product, and Y denotes a thermal conductivity (in W/mK) of a void-free polymer molded product having the same thickness as the void-containing resin molded product and formed of the same crystalline polymer that forms the void-containing resin molded product.
摘要:
It is disclosed a polymerizable composition for producing an optical member for 850 nm wavelength comprising: a polymerizable monomer composition and a compound, having a different refractive index from that of the polymerizable monomer composition, whose structure has a benzene ring substituted by a substituent having a Hammett value of not greater than 0.04 or by plural substituents having an average value of Hammett values thereof of not greater than 0.04. It is also disclosed a polymerizable composition for producing an optical member comprising a polymerizable monomer composition comprising at least one selected from the group consisting of C7-20 alicyclic (meth) acrylates and a compound, having a different refractive index from that of the polymerizable monomer composition and having a solubility parameter of not greater than 10.9, whose structure has a benzene ring substituted by the substituent or the substituents defined above.
摘要:
To provide a method for selecting a marker gene useful for cancer classification; a method for classifying cancer using the gene; a method for detecting cancer; a kit usable for the classification method or detection method; and a DNA array carrying the gene. According to the present invention, there can be obtained a gene, wherein expression of the above gene is altered independently from genes each of which expression is altered specifically during cell proliferation and expression level of the above gene is specifically altered depending on every type of cancer samples to be tested, whereby the classification or detection of cancer can be carried out conveniently and quickly without giving surgical treatment. Therefore, the present invention is useful for the diagnosis, the treatment, and the like of cancer.