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    • 73. 发明授权
    • Fluorescent material
    • 荧光材料
    • US4107273A
    • 1978-08-15
    • US846535
    • 1977-10-28
    • Atsushi SuzukiJean-Pierre Jeser
    • Atsushi SuzukiJean-Pierre Jeser
    • G06K19/06B42D15/10C09K11/08C09K11/77C09K11/81C09K11/82C09K11/46
    • C09K11/7777
    • An infrared rays excited - infrared rays emitting fluorescent material which contains predetermined quantities of neodymium and ytterbium as activators is disclosed.The fluorescent material according to this invention is higher in the luminescence intensity than a conventional, infrared rays excited - infrared rays emitting fluorescent material which is activated with neodymium only. Moreover, its maximum luminescence wavelength lies within a wavelength region which a silicon photosensor can detect at high sensitivity. It is therefore very useful in practical use.The fluorescent material is represented by the following formula:MM'.sub.1-x-y Nd.sub.x Yb.sub.y P.sub.4 O.sub.12wherein M denotes at least one element selected from the group consisting of Li, Na, K, Rb and Cs, and M' denotes at least one element selected from the group consisting of Sc, Y, La, Ce, Gd, Lu, Ga and In, and where 0.05 .ltoreq. x .ltoreq. 0.999, 0.001 .ltoreq. y .ltoreq. 0.950, and x + y .ltoreq. 1.0.BACKGROUND OF THE INVENTION1. Field of the InventionThis invention relates to a fluorescent material which is excited by infrared rays and which emits infrared rays (such a fluorescent material shall be termed an "infrared - infrared fluorescent material" in the present specification). More particularly, it relates to an infrared - infrared fluorescent material which is higher in the luminescence intensity than conventional infrared - infrared fluorescent materials and the peak of luminescence wavelength of which is well adapted to the responsivity spectrum of a solid-state photosensor.2. Description of the Prior ArtThe infrared - infrared fluorescent material had scanty applications in the past unlike other fluorescent materials, and only a very small number of substances were developed.Recently, however, the applications of the infrared - infrared fluorescent material have gradually widened for, e.g., the sensors of various analyzers. In consequence, an infrared - infrared fluorescent material exhibiting more excellent characteristics than in the prior art has been desired.It is stated in the following reference that several substances containing Nd, for example, CaWO.sub.4, Y.sub.3 Al.sub.5 O.sub.12, LaF.sub.3, CaNb.sub.2 O.sub.6 etc. can be used for solid-state devices for laser oscillation;(1) "Luminescence of Insulating Solid for Optical Masers," L. G. van Vitert in Luminescence of Inorganic Solids, ed. by Paul Goldberg, p. 465 - 5399, Academic Press 1966.Any of the above-mentioned substances has been used as the solid-state element for laser oscillation under the state of the single crystal, and there has not been any example in which it is employed as a fluorescent material. It is surely possible to use the substances as infrared - infrared fluorescent materials in the form of fine powder. The compounds which contain Nd ions have the properties that radiation in the infrared wavelength region is intensely absorbed by the Nd ions and that the efficiency of infrared emission is high. However, the concentration of cations to substitute is as low as several %, and the Nd ion concentration per unit volume is not high. Therefore, even if the substances are used as the powdery fluorescent materials, the influence of scattering on the powder surfaces will appear conspicuously, and it will be difficult to obtain a high output.Recently, several substances for new miniature elements have been reported in the following references:(2) "Minilasers of Neodymium Compounds," Stephen R. Chinn et al in Laser Focus, May 1976, p. 64 - 69.(3) "Stoichiometric Laser Materials," H. Danielmeyer in Festkorperproblem XV, p. 253, 1975, Viehweg (West Germany).The substance are the single-crystals of LiNdP.sub.4 O.sub.12, NdP.sub.5 O.sub.14, Al.sub.3 NdB.sub.4 O.sub.12 etc. A common feature is that the Nd ion concentration per unit volume is at least one order higher than the concentrations in the compounds mentioned previously. It is accordingly possible to obtain a high luminescence output even in case of the powdery form.However, the principal emission by the Nd ions lies in the vicinity of 1,050 nm, and this wavelength matches ill with the spectral sensitivity of a silicon photodetector which is the most excellent in the near infrared region. Accordingly, a fluorescent material with which a higher detector output is obtained is requested.SUMMARY OF THE INVENTIONAn object of this invention is to solve the problems of the prior arts and to provide a fluorescent material which has a high luminescence intensity and the luminescence of which can be detected at high sensitivity by a solid-state photosensor.In order to accomplish the object, this invention adds predetermined quantities of neodymium ions (Nd.sup.3+) and ytterbium ions (Yb.sup.3+) as activators, thereby to make the luminescence intensity high and to regulate the emission spectrum into a favorable shape.
    • 公开了含有预定量的钕和镱作为活化剂的红外线激发红外线发射荧光材料。
    • 77. 发明授权
    • Multi-subject imaging device and imaging method
    • 多目标成像装置及成像方法
    • US08928770B2
    • 2015-01-06
    • US13091356
    • 2011-04-21
    • Atsushi SuzukiYuusuke Koura
    • Atsushi SuzukiYuusuke Koura
    • H04N5/225H04N5/232
    • H04N5/23222H04N5/23219
    • It is an object of the present invention to provide an imaging device and terminal device that recommend a preferred image to a user. A terminal device having a photography function captures a plurality of images, identifies a plurality of subjects in each of the captured images, acquires a photographic degree of suitability for each of the identified subjects, calculates an evaluation value for each captured image based on the number of subjects in the captured image having a photographic degree of suitability of at least a predetermined threshold, and displays the captured images, displaying one of the captured images so as to be distinguishable from other captured images based on the evaluation value.
    • 本发明的目的是提供一种向用户推荐优选图像的成像装置和终端装置。 具有拍摄功能的终端装置捕获多个图像,识别每个拍摄图像中的多个被摄体,获取每个所识别的被摄体的适合性的摄影度,基于数字计算每个拍摄图像的评估值 拍摄图像中具有至少预定阈值的摄影度的拍摄图像的被摄体,并且显示所捕获的图像,基于评估值显示所捕获图像中的一个,以便与其它拍摄图像区分开。
    • 78. 发明授权
    • Process for producing fluorine-containing alkene compound
    • 含氟烯烃化合物的制备方法
    • US08816140B2
    • 2014-08-26
    • US13574921
    • 2011-02-08
    • Daisuke KarubeYuzo KomatsuAtsushi Suzuki
    • Daisuke KarubeYuzo KomatsuAtsushi Suzuki
    • C07C17/25C07C17/07C07C17/087
    • C07C17/21C07C17/25Y02P20/582C07C19/08C07C21/18
    • The present invention provides a process for producing a fluorine-containing alkene of the general formula CF3(CX2)nCF═CH2, wherein X each independently represents F or Cl, and n is an integer of 0 to 2. The process includes a first reaction step of allowing a specific chlorine-containing compound to react with a fluorinating agent under increased pressure in a gas phase in the presence of at least one fluorination catalyst selected from the group consisting of chromium oxide and fluorinated chromium oxide, and a second reaction step of heating the product of the first reaction step in a gas phase under a pressure lower than the pressure in the first reaction step. The process of the present invention can produce a fluorine-containing alkene with a high selectivity with the use of a catalyst that can be easily handled, while suppressing production of by-products that cannot be easily converted into the target or separated.
    • 本发明提供通式CF 3(CX 2)n CF = CH 2的含氟烯烃的制造方法,其中X各自独立地表示F或Cl,n为0〜2的整数。该方法包括第一反应 在选自氧化铬和氟化氧化铬的至少一种氟化催化剂存在下,在气相中,在特定的含氯化合物与氟化剂在增压下反应的步骤,和第二反应步骤 在低于第一反应步骤中的压力的​​压力下,在气相中加热第一反应步骤的产物。 本发明的方法可以通过使用易于处理的催化剂,同时抑制不容易转化成靶或分离的副产物的产生而产生具有高选择性的含氟烯烃。