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    • 5. 发明授权
    • Slider for optical head
    • 光头滑块
    • US06320841B1
    • 2001-11-20
    • US09409048
    • 1999-09-30
    • Kenjiro WatanabeShigeo KubotaHideo Owa
    • Kenjiro WatanabeShigeo KubotaHideo Owa
    • G11B712
    • G11B11/1058B82Y10/00G11B7/122G11B7/1374G11B7/1387G11B11/10532G11B11/10554G11B2007/13725G11B2007/13727
    • A slider for the optical head easy to manufacture and having a high degree of freedom is to be provided as a slider for the optical head for recording and/or reproducing a recording medium using the proximity optical field. On a slider member 3, adapted for running on the recording medium in a state of being floated over or contacted with the recording medium, a catadioptric lens 7 is bonded to constitute a slider for the optical head 1. The slider member 3 and the catadioptric lens 7 are connected and optically unified to each other so that the numerical aperture NA of an optical system made up of the slider member 3 and the catadioptric lens 7 is not less than unity. Also, the plane of the focal point of the light incident for the side of the catadioptric lens 7 is designed to be on a recording medium facing surface of the slider member 3.
    • 作为容易制造且具有高自由度的光学头的滑块,作为用于使用接近光学场记录和/或再现记录介质的光学头的滑块被提供。 在滑动构件3上,适于在浮动或与记录介质接触的状态下在记录介质上运行,接合反折射透镜7以构成用于光学头1的滑块。滑动构件3和反射折射率 透镜7彼此连接和光学统一,使得由滑动构件3和反射折射透镜7构成的光学系统的数值孔径NA不小于1。 此外,入射到反射折射透镜7一侧的光的焦点的平面被设计为位于滑动构件3的面向记录介质的表面上。
    • 6. 发明授权
    • Laser beam generating apparatus and method
    • 激光束发生装置及方法
    • US06240111B1
    • 2001-05-29
    • US09289244
    • 1999-04-09
    • Shigeo KubotaNobuhiko UmezuTatsuo FukuiHisashi MasudaKoichi Tatsuki
    • Shigeo KubotaNobuhiko UmezuTatsuo FukuiHisashi MasudaKoichi Tatsuki
    • H01S310
    • G02F1/37
    • A laser beam generating apparatus comprising a first laser beam source oscillating in a near infrared-ray region of, for example, an Nd:YAG laser to generate a laser beam, a second higher harmonic wave generator for generating, from the laser beam emitted from the first laser beam source, a second higher harmonic wave having a half wavelength of the laser beam emitted from the first laser beam source, a splitter for splitting the second higher harmonic wave, a second laser beam source which is supplied with a part of the second higher harmonic wave thus split is input to a Ti:Sapphire laser to be excited and oscillated, thereby generating a laser beam of substantially 700 nm in wavelength, a fourth higher harmonic wave generator for generating a fourth higher harmonic wave from the remaining part of the second higher harmonic wave thus split, a sum frequency mixing composed of a BBO crystal device to which the laser beam of substantially 700 nm in wavelength and the fourth higher harmonic wave are input, and a controller for controlling the temperature of the BBO crystal device to substantially 100K or less, thereby generating a laser beam of substantially 193 nm in wavelength as an output of the sum frequency mixing.
    • 一种激光束产生装置,包括:在例如Nd:YAG激光器的近红外线区域中振荡的第一激光束源,以产生激光束;第二高次谐波发生器,用于从从 第一激光束源,具有从第一激光束源发射的激光束的半波长的第二高次谐波,用于分离第二高次谐波的分离器,被提供有第一激光束的一部分的第二激光束源 将这样分割的第二高次谐波输入到激发和振荡的Ti:蓝宝石激光器中,从而产生大致为700nm的波长的激光束;第四高次谐波发生器,用于从剩余部分产生第四高次谐波 这样分裂的第二高次谐波,由BBO晶体器件组成的和频混频,其中波长大致为700nm的激光束和第四较高谐波 尼康波输入,以及用于将BBO晶体装置的温度控制在基本上为100K以下的控制器,由此产生大致193nm的波长的激光束作为和频混合的输出。