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    • 3. 发明授权
    • Light modulator and wave guide device
    • 光调制器和波导装置
    • US4830448A
    • 1989-05-16
    • US917058
    • 1986-10-09
    • Yoji OkazakiHiroshi SunagawaKozi Kamiyama
    • Yoji OkazakiHiroshi SunagawaKozi Kamiyama
    • G02F1/01G02F1/295G06K15/12H04N1/12
    • H04N1/1275G02F1/0147G02F1/295G06K15/1285H04N1/12G02F2201/302
    • A light modulator comprises a stack of a wave guide layer and an adjacent layer normally exhibiting a refractive index smaller than that of the wave guide layer, at least one of these layers being formed of a material whose refractive index changes by application of energy. An energy applicator is provided at least in one of these layers, and a dielectric grating is positioned at the surface of the adjacent layer over a section where energy is applied by the energy applicator. A drive circuit is provided for energizing the energy applicator and causing a change in refractive index to arise in the wave guide layer and/or the adjacent layer so that a wave guided inside of the wave guide layer is radiated out of the stack by interaction with the dielectric grating. In a wave guide device, the wave guide layer is formed of a thermo-optic material in which the thermal coefficient of refractive index is zero or negative, and the adjacent layer is formed of a thermo-optic material exhibiting a positive thermal coefficient of refractive index.
    • 光调制器包括一个波导层和通常具有比波导层的折射率小的折射率的相邻层的叠层,这些层中的至少一个由折射率通过施加能量而改变的材料形成。 至少在这些层之一中提供能量施加器,并且电介质光栅位于相邻层的表面上,在能量施加器施加能量的部分上。 提供驱动电路用于对能量施加器进行激励,并引起波导层和/或相邻层中出现的折射率变化,使得引导波导层内的波浪通过与 电介质光栅。 在波导装置中,波导层由折射率的热系数为零或负的热光材料形成,相邻的层由表现出正的热折射系数的热光材料形成 指数。
    • 6. 发明授权
    • Optical wavelength conversion device, and a method of making the same
    • 光波长转换装置及其制造方法
    • US4820011A
    • 1989-04-11
    • US70442
    • 1987-07-07
    • Shinsuke UmegakiYoji OkazakiKozi Kamiyama
    • Shinsuke UmegakiYoji OkazakiKozi Kamiyama
    • G02F1/37G02F1/377G02B6/34G02B6/26
    • G02F1/377G02F2001/374
    • An optical wavelength conversion device is constituted by a pair of substrates disposed facing each other, and an optical waveguide formed of a nonlinear optical material and disposed between the substrates, thereby to convert a fundamental wave entering the optical wavelength conversion device formed to a second harmonic which is phase matched by Cherenkov radiation. At least one of the substrates is provided with a grating for entry of the fundamental wave, which is formed on a surface contacting the optical waveguide, and/or with a grating for radiation of the second harmonic, which is formed on a surface opposite to the surface contacting the optical waveguide. The optical wavelength conversion device is made by forming grooves on the substrates, filling a slight space between the substrates with a crystallizable organic nonlinear optical material, and gradually crystallizing the optical material.
    • 光波长转换装置由彼此相对配置的一对基板和由非线性光学材料形成并设置在基板之间的光波导构成,从而将进入形成为二次谐波的光波长转换装置的基波 这是切伦科夫辐射的相位匹配。 至少一个基板设置有用于进入基波的光栅,该光栅形成在与光波导接触的表面上,和/或与用于二次谐波辐射的光栅形成,该光栅形成在与 表面接触光波导。 通过在基板上形成槽,用可结晶的有机非线性光学材料填充基板之间的微小空间,并使光学材料逐渐结晶来制造光波长转换元件。
    • 7. 发明授权
    • Image forming method using laser beam
    • 使用激光束的成像方法
    • US5415978A
    • 1995-05-16
    • US181255
    • 1994-01-13
    • Masahiro AsamiNobuharu NozakiYoji Okazaki
    • Masahiro AsamiNobuharu NozakiYoji Okazaki
    • B41J2/525G03B27/73G03C1/00G03C1/10G03C5/08G03C7/00G03C7/30H04N1/50
    • H04N1/50G03C7/3041Y10S430/146Y10S430/164
    • An image is formed in a color photosensitive material through scanning exposure by using at least one semiconductor laser excited solid laser including a semiconductor laser, a non-linear optical element and means for controlling the temperature thereof as a light source for producing a laser beam. The laser beam is modulated by an external modulator in accordance with the image to be formed. Among the combinations of photosensitive layers and laser beams, at least two laser beam light sources are such that a laser beam has a wavelength falling within .+-.20 nm from the maximum wavelength in the spectral sensitivity distribution of the corresponding photosensitive layer. Each photosensitive layer has a spectral sensitivity distribution with a peak width of up to 40 nm. The method enables to form an image in a conventional silver halide photosensitive material having spectral sensitivity in the visible region using a cost effective light source, the resulting image having color generated to a satisfactory density, free of a density variation, and hence of high quality.
    • 通过使用包括半导体激光器,非线性光学元件的至少一个半导体激光激光固体激光器和用于控制其温度作为用于产生激光束的光源的装置的扫描曝光,在彩色感光材料中形成图像。 激光束根据要形成的图像由外部调制器调制。 在感光层和激光束的组合中,至少两个激光束光源使得激光束的波长在对应的感光层的光谱灵敏度分布中与最大波长相差+/- 20nm。 每个感光层具有峰值宽度高达40nm的光谱灵敏度分布。 该方法能够使用成本有效的光源在可见光区域中具有光谱灵敏度的常规卤化银感光材料形成图像,所得到的图像产生的密度达到令人满意的密度,没有密度变化,因此具有高质量 。
    • 9. 发明授权
    • Laser diode pumped solid laser
    • 激光二极管泵浦固体激光器
    • US5315613A
    • 1994-05-24
    • US70922
    • 1993-06-04
    • Nobuharu NozakiShinji MitsumotoYoji OkazakiTakashi Adachi
    • Nobuharu NozakiShinji MitsumotoYoji OkazakiTakashi Adachi
    • G02F1/35H01S3/06H01S3/094H01S3/0941H01S3/109H01S3/16H01S3/09
    • H01S3/09415H01S3/109H01S3/1611
    • A laser diode pumped solid laser comprises a solid laser medium, to which a rare earth metal has been added, a semiconductor laser, which produces a laser beam for pumping the solid laser medium, and a condensing lens, which causes the laser beam to converge in the solid laser medium. The condensing lens is located such that an optical axis of the condensing lens may deviate in the width direction of a semiconductor laser active layer from a center of irradiation area of the semiconductor laser. The amount of light returning to the semiconductor laser is thereby reduced markedly, and good stability in the output power of the laser diode pumped solid laser is obtained. A nonlinear optical material for converting the wavelength of a laser beam, which has been produced by the solid laser medium, into a different wavelength may be located in a solid laser resonator.
    • 激光二极管泵浦固体激光器包括固体激光介质,添加有稀土金属,半导体激光器,其产生用于泵浦固体激光介质的激光束和聚光透镜,其使激光束会聚 在固体激光介质中。 聚光透镜的定位使得聚光透镜的光轴可以从半导体激光器有源层的宽度方向偏离半导体激光器的照射区域的中心。 从而显着降低了返回到半导体激光器的光量,并且获得了激光二极管泵浦固体激光器的输出功率的良好的稳定性。 用于将由固体激光介质产生的激光束的波长转换为不同波长的非线性光学材料可以位于固体激光谐振器中。
    • 10. 发明授权
    • Apparatus for synthesizing laser beams
    • 用于合成激光束的装置
    • US07339975B2
    • 2008-03-04
    • US10769995
    • 2004-02-03
    • Fusao YamanakaYoji OkazakiChiaki GotoShinichi Shimotsu
    • Fusao YamanakaYoji OkazakiChiaki GotoShinichi Shimotsu
    • H01S3/08
    • G02B19/0057G02B19/0014G02B19/0028G02B19/009G02B27/0961H01S5/005H01S5/02284H01S5/4012H01S5/4031
    • (Problem to be solved) To provide a laser beam synthesizing apparatus which is small in size and high in output power.(Means for solving the problem) A convergent angle transforming optical system 30 is disposed further upstream of the upstream-most position Pa in the positions where the optical axes of beam bundles La, Lb, Lc . . . which are radiated from a plurality of semiconductor lasers 11A, 11B, 112C . . . and converged in the fast axis view by a converging/dispersion lens 120 intersect each other in the fast axis view, and the whole beam bundle made up of the beam bundles La, Lb, Lc . . . passed through the converging/dispersion lens 120 is converged in the fast axis view by the convergent angle transforming optical system 30 so that the angle of convergence of the whole beam bundle is made smaller in the fast axis view, and introduced into the core 41 of an optical fiber 40.
    • (待解决的问题)提供一种尺寸小,输出功率高的激光束合成装置。 (解决问题的手段)在束流束束La,Lb,Lc的光轴的位置,将会聚角度变换光学系统30设置在最上游位置Pa的上游的上游。 。 。 它们从多个半导体激光器11A,11B,112C辐射。 。 。 并且通过在快轴视图中彼此相交的会聚/分散透镜120以及由束束La,Lb,Lc构成的整个束束而在快轴视图中会聚。 。 。 通过会聚/分散透镜120,通过会聚角度变换光学系统30在快轴视图中会聚,使得整个束束的会聚角度在快轴视图中变小,并被引入到 光纤40。