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
    • 2. 发明授权
    • Light source apparatus and its control method
    • 光源装置及其控制方法
    • US07010006B2
    • 2006-03-07
    • US10465948
    • 2002-06-21
    • Ken'ichi KasazumiYasuo KitaokaTosifumi YokoyamaKiminori MizuuchiKazuhisa YamamotoHisashi SengaShigeru FurumiyaHiromichi Ishibashi
    • Ken'ichi KasazumiYasuo KitaokaTosifumi YokoyamaKiminori MizuuchiKazuhisa YamamotoHisashi SengaShigeru FurumiyaHiromichi Ishibashi
    • H01S3/13H01S3/10
    • H01S5/0687G02F1/37H01S5/005H01S5/0092H01S5/06256H01S5/0683
    • A light source device can attain a stable output of a harmonic even when there occurs a change in the ambient temperature or fluctuation in the output power. The light source device is provided with a semiconductor laser source (4), an optical waveguide-type QPM-SHG device (5) for generating a second harmonic from light emitted from the semiconductor laser source (4), a wavelength control means (7) for controlling a wavelength of light emitted from the semiconductor laser source (4), a means for slightly fluctuating wavelength (8) for changing a wavelength of light emitted from the semiconductor laser source (4) and a means for detecting a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed. In this case, a wavelength of light emitted from the semiconductor laser source (4) is controlled to an optimum wavelength of the optical waveguide-type QPM-SHG device (5) based on a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed.
    • 即使发生环境温度的变化或输出功率的波动,光源装置也可以获得稳定的谐波输出。 光源装置设置有半导体激光源(4),用于从半导体激光源(4)发射的光产生二次谐波的光波导型QPM-SHG器件(5),波长控制装置(7) ),用于控制从半导体激光源(4)发射的光的波长,用于稍微波动的用于改变从半导体激光源(4)发射的光的波长的波长(8)的装置和用于检测输出变化的装置 当从半导体激光源(4)发射的光的波长改变时发生的光波导型QPM-SHG器件(5)的光功率变化。 在这种情况下,基于光波导型的输出光功率的变化,从半导体激光源(4)发射的光的波长被控制到光波导型QPM-SHG器件(5)的最佳波长 当从半导体激光源(4)发射的光的波长改变时发生的QPM-SHG器件(5)。
    • 4. 发明授权
    • Optical pickup and optical information recording/reproducing device
    • 光学拾取和光学信息记录/再现装置
    • US07154837B2
    • 2006-12-26
    • US09870095
    • 2001-05-30
    • Ken'ichi KasazumiYasuo KitaokaKiminori MizuuchiKazuhisa Yamamoto
    • Ken'ichi KasazumiYasuo KitaokaKiminori MizuuchiKazuhisa Yamamoto
    • G11B7/135
    • B82Y10/00G02F2203/18G11B7/1369G11B7/1381
    • An optical pickup and an optical information recording/reproducing device are provided, each of which is capable of forming a super-resolution spot to conduct micro-mark recording, and does not undergo signal degradation due to an increased sidelobe in a reproducing operation. A variable phase filter having three regions to produce a phase difference in a radial direction is used, to provide a phase difference of π between the center region and the side regions in a recording operation, so that a super-resolution spot is formed on a recording layer of the optical disk. In a reproducing operation, a phase difference is nullified between the regions of the variable phase filter, so that a normal light spot at a diffraction limit having a smaller sidelobe is formed. The variable phase filter can be formed with a homogeneous-alignment liquid crystal element.
    • 提供了一种光学拾取器和光学信息记录/再现装置,每个光学拾取器和光学信息记录/再现装置能够形成超分辨率点以进行微标记记录,并且由于再现操作中的旁瓣增加而不会发生信号劣化。 使用具有在径向上产生相位差的三个区域的可变相位滤波器,以在记录操作中提供中心区域和侧面区域之间的pi的相位差,使得在 记录层的光盘。 在再现操作中,可变相位滤波器的区域之间的相位差无效,从而形成具有较小旁瓣的衍射极限处的正常光斑。 可变相位滤波器可以由均匀取向的液晶元件形成。