会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Optical scanner
    • 光学扫描仪
    • US5253098A
    • 1993-10-12
    • US883600
    • 1992-05-14
    • Kazuyasu HikitaHiroyuki IizukaYoshiaki Tanaka
    • Kazuyasu HikitaHiroyuki IizukaYoshiaki Tanaka
    • G02B6/35G02B26/10G06K7/10G06K15/12H04N1/113G02B26/08
    • H04N1/113G02B26/10G06K15/1204G06K7/10831G02B6/3502G02B6/3578G02B6/3598
    • An optical scanner for scanning light signals, such as light beams, including an electrostrictive element attached at one end thereof to a base body, a convex mirror fixed to the other end of the electrostrictive element, a driving circuit for changing a voltage applied to the electrostrictive element, and an emitter for emitting a light beam to the surface of the convex mirror in a direction different from the modified direction of the electrostrictive element. When the applied voltage to the electrostrictive element changes by the driving circuit during reflecting light beams on the convex mirror surface, the electrostrictive element is modified according to the applied voltage. Simultaneously light beams are scanned over a wide range, even if the modified volume is small, due to continuous change of deflection angles of beams according to the radius of the curvature of the convex mirror.
    • 一种用于扫描诸如光束的光信号的光学扫描仪,其包括一端附接到基体的电致伸缩元件,固定到电致伸缩元件的另一端的凸镜,用于改变施加到电致伸缩元件的电压的驱动电路 电致伸缩元件和用于沿与电致伸缩元件的改变方向不同的方向将光束发射到凸面镜的表面的发射器。 当在凸面镜面上反射光束时,通过驱动电路使电致伸缩元件的施加电压变化时,电致伸缩元件根据所施加的电压被修改。 同时,由于根据凸面镜的曲率半径,光束偏转角的连续变化,即使改变体积小,也可以在宽范围内扫描光束。
    • 6. 发明授权
    • Method of measuring the time for forming refractive index grating of a
photo-nonlinear medium
    • 测量光非线性介质折射率光栅形成时间的方法
    • US5303032A
    • 1994-04-12
    • US949392
    • 1992-09-22
    • Yoshiaki UesuJun IbaToshiyuki YoshiharaKazuyasu HikitaHiroyuki Iizuka
    • Yoshiaki UesuJun IbaToshiyuki YoshiharaKazuyasu HikitaHiroyuki Iizuka
    • G01N21/63G02F1/35H01S3/10H01S3/108G01B9/02
    • G02F1/3538G01N21/63
    • A laser beam with a wavelength .lambda. emitted from a laser beam source is split into first and second pump beams and a probe beam. The first and second pump beams are incident on light incident surfaces of a photo-nonlinear medium from opposing directions on the same optical path. The probe beam is incident on the light incident surface forming an angle with the first pump beam to generate interference fringes in the normal direction of the light incident surface and to form a refractive index grating. A phase conjugate wave is emitted in the reverse direction to an incident optical path of the probe beam by means of irradiating the second pump beam on the refractive index grating. A direct -current electric field is applied on a pair of external electrodes to be coincident to the wave vector of the interference fringes, where by providing a frequency modulation to the first pump beam using a piezoelectric oscillator, a moving speed "v" of the interference fringes is determined when light intensity of the phase conjugate wave is maximized. A forming time .tau. of the refractive index grating can thus be obtained. An accurate and rapid measurement can generally be obtained for the forming time of the refractive index grating of the photononlinear medium formed of photorefractive crystal including a cubic system such as BSO.
    • 从激光束源发射的具有波长λ的激光束被分成第一和第二泵浦光束和探测光束。 第一和第二泵浦光束在同一光路上从相对方向入射到光非线性介质的光入射表面上。 探测光束入射到与第一泵浦光束形成角度的光入射表面上,以在光入射表面的法线方向上产生干涉条纹并形成折射率光栅。 通过将第二泵浦光束照射在折射率光栅上,相反的共轭波在与探测光束的入射光路相反的方向上发射。 直流电场施加在一对外部电极上以与干涉条纹的波矢一致,其中通过使用压电振荡器向第一泵浦波束提供频率调制,移动速度“v” 当相位共轭波的光强度最大时,确定干涉条纹。 因此可以获得折射率光栅的形成时间τ。 通常可以获得由包括诸如BSO的立方体系的光折射晶体形成的光子线性介质的折射率光栅的形成时间的精确和快速的测量。
    • 9. 发明授权
    • Photo-driven switching apparatus
    • 光驱切换装置
    • US5050969A
    • 1991-09-24
    • US456970
    • 1989-12-26
    • Kenji UchinoKazuyasu HikitaMikiya Ono
    • Kenji UchinoKazuyasu HikitaMikiya Ono
    • G02F1/01G02F1/055
    • G02F1/0126G02F1/055G02F1/0558
    • A photo-driven switching apparatus in which a light beam is switched or modulated by using only light beam(s), comprising (a) a dielectric substrate having "photovoltaic effect"; (b) one or more couples of electrodes formed in or on at least portions of the surface(s) of the substrate so as to polarize the portion(s) positioned between the couple(s) of the electrodes thereby, (c) one or more photo-driving or photo-receiving elements provided at least in the polarized portion(s) of the surface of the dielectric substrate, having a polarization direction arranged at one certain direction, and having photovoltaic effect so as to generate photovoltage; (d) a dielectric rotation element comprising a light beam switching passage or modulator having a couple of polarizers, the polarization direction of each of which is perpendicularly crossed or parallel to each other, positioned on the surface of incoming of a light beam to be modulated, and at the surface of outgoing of the light beam, and a couple of electrodes formed on a couple of the other surfaces facing to each other of the element to apply an electric field in the element; (e) connecting leads connecting electrically the electrodes of the photo-driving elent(s) respectively to the electrodes of the element; the light beam to be modulated being incoming through the polarizer into the element through which the light beam passes to be switched or modulated; and the switching passage being operated directly the the photovoltage generated by the photo-dirving element(s) which can be operated or switched only by illumination of ultra-violet ray to the surface of said photo-driving element(s).
    • 一种光驱动开关装置,其中通过仅使用光束来切换或调制光束,其包括(a)具有“光电效应”的电介质基板; (b)一个或多个电极对,形成在所述基板的所述表面的至少一部分中或之上,以便使位于所述电极的所述电极之间的所述部分偏振,(c)一个 或更多的光驱动或光接收元件,其至少设置在电介质基板的表面的极化部分中,具有沿一定方向排列的偏振方向,并且具有光电效应以产生光电压; (d)介质旋转元件,包括具有一对偏振器的光束切换通道或调制器,每个偏振方向的偏振方向彼此垂直交叉或平行,位于要调制的光束的入射表面上 并且在光束出射的表面上,以及一对电极,形成在面对该元件的另一个表面的一对表面上以在该元件中施加电场; (e)连接导线将驱动光驱的电极分别连接到元件的电极的引线; 待调制的光束通过偏振器进入光束通过的元件被切换或调制; 并且所述切换通道直接操作由所述光引导元件产生的光电压,所述光电转换元件可以仅通过将紫外线照射到所述光驱元件的表面而被操作或切换。
    • 10. 发明授权
    • Gas sensor and gas discriminating method
    • 气体传感器和气体鉴别方法
    • US5602324A
    • 1997-02-11
    • US424366
    • 1995-04-25
    • Hiroaki YanagidaMasaru MiyayamaKazuyasu Hikita
    • Hiroaki YanagidaMasaru MiyayamaKazuyasu Hikita
    • G01N27/00G01N27/12G01N27/02G01N27/04
    • G01N27/129
    • The present invention relates to a gas sensor and a gas discriminating method which are capable of distinctly discriminating two or more kinds of gases. A DC bias and AC signals which are superposed to a junction part, which is formed on a gas sensor having a p-type oxide semiconductor and an n-type oxide semiconductor by means of heterojunction of end surfaces thereof, an impedance characteristic of the junction part is measured, and CO gas and H.sub.2 gas are discriminated in accordance with a dependence on a frequency of the AC signals and on the DC bias of the impedance characteristic. CuO into which an alkali metal element is doped is used as the p-type oxide semiconductor and ZnO is used as the n-type oxide semiconductor. The alkali metal element to be used is an alkali metal element selected from the group of Li, Na and K and the doping quantity is such that 0.2 mole %.ltoreq.M.sub.2 O.ltoreq.5 mole %, where M is Li, Na or K.
    • PCT No.PCT / JP94 / 01650 Sec。 371日期1995年04月25日 102(e)日期1995年4月25日PCT 1994年10月3日PCT PCT。 WO95 / 10039 PCT出版物 日期:1995年04月13日本发明涉及能够明确区分两种以上气体的气体传感器和气体识别方法。 直流偏压和交流信号,其叠加在接合部分上,其通过其端面的异质结形成在具有p型氧化物半导体和n型氧化物半导体的气体传感器上,该结的阻抗特性 测量部分,并且根据对AC信号的频率和阻抗特性的DC偏置的依赖性来区分CO气体和H 2气体。 使用掺杂了碱金属元素的CuO作为p型氧化物半导体,使用ZnO作为n型氧化物半导体。 所使用的碱金属元素是选自Li,Na和K的碱金属元素,掺杂量为0.2摩尔%M 2 O 5摩尔%,其中M为Li,Na或 K.