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    • 2. 发明授权
    • Aberration correcting device, optical device, and optical head device
    • 畸变校正装置,光学装置和光学头装置
    • US08295143B2
    • 2012-10-23
    • US13096783
    • 2011-04-28
    • Koji MiyasakaTakuji NomuraKoichi Murata
    • Koji MiyasakaTakuji NomuraKoichi Murata
    • G11B7/00
    • G11B7/13925G11B2007/0006
    • The present invention relates to an aberration correcting device comprising: an aberration correcting element which modulates the phase of incident light; and a position adjusting section which can move the aberration correcting element in a direction perpendicular to an optical axis of the incident light, wherein the aberration correcting element includes first and second aberration correction plates, each of which is disposed such that the phase of transmitted light beam differs with transmission position of the incident light beam with the same phase, and the aberration correcting element has a reference arrangement which is an arrangement of the first and second aberration correction plates in which the light beams transmitted through the aberration correcting element have the same phase, and assuming that a point on the first aberration correction plate crossing the optical axis is a point Oa and a point on the second aberration correction plate crossing the optical axis is a point Ob in the reference arrangement, the position adjusting section includes a mechanism which can move the first and second aberration correction plates in a direction perpendicular to the optical axis and the points Oa and Ob in opposite directions from the reference arrangement and/or a mechanism which can rotate and move the first and second aberration correction plates by the same angle in different directions from the reference arrangement with the points Oa and Ob as the center.
    • 本发明涉及一种像差校正装置,包括:像差校正元件,其对入射光的相位进行调制; 以及位置调整部,其可以使与所述入射光的光轴垂直的方向移动所述像差修正元件,其中所述像差修正元件包括第一和第二像差校正板,每个所述第一和第二像差校正板被设置为使得透射光的相位 光束与具有相同相位的入射光束的透射位置不同,并且像差校正元件具有作为透射通过像差校正元件的光束具有相同的第一和第二像差校正板的布置的参考布置 并且假设与光轴交叉的第一像差校正板上的点是点Oa,并且与基准装置相交的第二像差校正板上的点是基准布置中的点Ob,位置调整部分包括机构 其可以移动第一和第二像差校正板 与基准装置相反的方向垂直于光轴的方向和点Oa和Ob以及/或能够使第一和第二像差校正板沿与参考装置不同的方向旋转相同角度的机构,和/ 以Oa和Ob为中心。
    • 4. 发明授权
    • Diffractive optical element and measurement instrument
    • 衍射光学元件和测量仪器
    • US08995057B2
    • 2015-03-31
    • US13285204
    • 2011-10-31
    • Koji MiyasakaTakuji Nomura
    • Koji MiyasakaTakuji Nomura
    • G01B11/25G02B27/42
    • G01B11/2513G01B11/25G02B27/4233
    • A diffractive optical element includes: a first diffractive element in which a plurality of basic units are two-dimensionally arranged; and a second diffractive element in which a plurality of basic units are two-dimensionally arranged, wherein when a direction in which the basic units are arranged in the first diffractive element is a first direction, a direction in which the basic units are arranged in the second diffractive element is a second direction, an angle φ between the first direction and the second direction is such that −|φ1|
    • 衍射光学元件包括:第二衍射元件,其中多个基本单元被二维排列; 以及第二衍射元件,其中多个基本单元是二维布置的,其中当所述基本单元布置在所述第一衍射元件中的方向为第一方向时,所述基本单元布置在所述第一衍射元件中的方向 第二衍射元件是第二方向,角度&phgr; 在第一方向和第二方向之间的距离为 - |&phgr; 1 | <&phgr; <|&phgr; 1 |,&phgr;≠0,sin&phgr; 1 =-α/&Dgr; x 当由第一衍射元件产生的衍射光进一步入射在第二衍射元件上时产生的单光是&Dgr x,并且由第二衍射元件产生的衍射光和杂散光的最近距离为α。
    • 5. 发明授权
    • Reflection type wavelength plate and optical head device
    • 反射式波长板和光学头装置
    • US08451704B2
    • 2013-05-28
    • US13450838
    • 2012-04-19
    • Koji MiyasakaTakuji NomuraMamoru Isobe
    • Koji MiyasakaTakuji NomuraMamoru Isobe
    • G11B7/00
    • G11B7/1369G02B5/3025G02B27/283G11B7/1275G11B7/1365G11B2007/0006
    • A phase difference layer 12 and a reflection layer 13 are provided. Then, adjustment is performed such that the phase difference layer 12 and the reflection layer 13 impart a predetermined phase difference to light having a particular wavelength bandwidth or plural kinds of light of different wavelengths that enter in an oblique direction relative to the normal direction of the plane of the phase difference layer 12. By virtue of this, the light 16a that goes forward and backward through the phase difference layer 12 and then exits the layer has an ellipticity κ of 0.7 or greater. Thus, in particular, when this wave plate is employed in an optical head device, the function of reflection and the function of a ¼-wave plate are integrated. Thus, stable recording and reproduction of an optical disk are achieved, and size reduction is achieved in the optical head device.
    • 提供了相位差层12和反射层13。 然后,进行调整,使得相位差层12和反射层13对具有特定波长带宽的光或相对于正交方向的法线方向进入倾斜方向的不同波长的多种光赋予预定的相位差 由此,通过相位差层12前后移动然后离开层的光16a的椭圆率κ为0.7以上。 因此,特别是当这种波片用于光学头装置时,反射的功能和1/4波片的功能被集成。 因此,实现了光盘的稳定的记录和再现,并且在光头装置中实现了尺寸减小。
    • 6. 发明授权
    • Throwaway tip for deep-hole drilling and drill head for deep-hole drilling
    • 钻孔深孔钻头和深孔钻头钻头
    • US08764352B2
    • 2014-07-01
    • US12911437
    • 2010-10-25
    • Takuji Nomura
    • Takuji Nomura
    • B23B41/02
    • B23B51/0493B23B27/145B23B41/02B23B2200/0423B23B2200/28B23B2251/46Y10T407/23Y10T408/892Y10T408/905Y10T408/909
    • A three-way indexable throwaway tip for deep-hole drilling can be used as a center cutting blade body for a drill head in either whole cutting type or uncut core break-off type applications. The throwaway tip for deep-hole drilling is of a thick plate body having a three-fold symmetry with three cutting sections that are rotationally spaced apart at a central angle of 120 degrees. When mounted on a drill head, one cutting section of the throwaway tip faces a drilling direction. The forward facing blade edge of that cutting section includes an inner blade edge shorter in blade length and an outer blade edge longer in blade length forming an apex. The outer blade edge is composed of two consecutive blade edge portions of a peak-side outer blade edge portion having a smaller outer blade edge angle and a corner-side outer blade edge portion having a larger outer blade edge angle.
    • 用于深孔钻孔的三路可转位刀片可用作整个切割型或未切割铁芯断裂型应用中的用于钻头的中心切割刀片体。 用于深孔钻削的一次性刀片是具有三重对称的厚板体,三个切割部分以120度的中心角旋转间隔开。 当安装在钻头上时,可更换刀片的一个切割部分面向钻孔方向。 该切割部分的向前刀片边缘包括刀片长度较短的内刃边缘和形成顶点的刀片长度较长的外刃边缘。 外刃边缘由具有较小外刃边缘角的峰侧外刃边缘部分和具有较大外刀刃角度的拐角侧外刃边缘部分的两个连续刀片边缘部分组成。
    • 8. 发明申请
    • Drill Head for Deep-Hole Drilling
    • 钻孔钻头深孔钻孔
    • US20110079445A1
    • 2011-04-07
    • US12967831
    • 2010-12-14
    • Takuji Nomura
    • Takuji Nomura
    • E21B10/00
    • B23B51/0486B23B41/02B23B2251/422
    • Provided is a drill head for deep-hole drilling which does not generate such a disc that clogs a cutting chip discharge port when a head main body of the drill head penetrates a work material. The drill head is mounted with a central cutting blade tip 6 at the head center portion so as for a blade edge 6a thereof to be inclined downward toward the head center portion, a circumferential cutting blade tip 7 at a circumferential portion so as for a blade edge 7a thereof to be inclined upward toward the head center portion, and an intermediate cutting blade tip 8 therebetween so as for a blade edge 8a thereof to be inclined upwardly and inwardly toward the head center portion, while the cutting blade tips face a cutting chip discharge port 4 or 5. The drill head includes a head main body 2 having an interior hollow portion 3 serving as a cutting chip discharge passage which communicates with the discharge ports 4 and 5. A disc breaker 12 composed of a surface inclined downwardly and inwardly toward the head center portion is formed at a head center side end portion of a flank 8b of the intermediate cutting blade tip 8.
    • 本发明提供一种用于深孔钻孔的钻头,当钻头头部主体穿透工件时,不会产生堵塞切屑排出口的盘。 钻头在头部中心部分安装有中央切割刀片尖端6,以使刀片边缘6a朝向头部中心部分向下倾斜,圆周切割刀片尖端7在圆周部分上以便于刀片 其边缘7a朝向头部中心部分向上倾斜,并且其间的中间切割刀片尖端8,以使刀片边缘8a朝向头部中心部分向上和向内倾斜,同时切割刀片尖端面向切割芯片 排出口4或5.钻头包括具有内部中空部分3的头部主体2,头部主体2用作与排出口4和5连通的切屑排出通道。一个盘形破碎机12,由向下和向内倾斜的表面 朝向头部中心部分形成在中间切割刀片尖端8的侧面8b的头部中心侧端部。
    • 9. 发明授权
    • Liquid crystal lens element and optical head device
    • 液晶透镜元件和光头装置
    • US07710535B2
    • 2010-05-04
    • US11621128
    • 2007-01-09
    • Takuji NomuraHiroyuki Kojima
    • Takuji NomuraHiroyuki Kojima
    • G02F1/13
    • G02F1/133526G02F1/29G02F2001/294G11B7/1369G11B7/1378G11B7/13925
    • A liquid crystal lens element having a lens function capable of stably correcting spherical aberration containing a power component corresponding to focus change of incident light according to the magnitude of applied voltage.The liquid crystal lens element comprises a pair of transparent substrates 11 and 12, one (12) of the transparent electrodes is provided with a transparent electrode 15 and a Fresnel lens surface 17, and the other one (11) of the pair of transparent electrodes is provided with a phase correction surface 18 and a transparent electrode 16. Thus, by disposing a Fresnel lens surface 17 and a liquid crystal layer 13 between a pair of transparent electrodes 15 and 16, it becomes possible to change substantial refractive index distribution of the liquid crystal layer 13 according to the magnitude of applied voltage, and to add a positive or negative power to a wavefront transmitted through the liquid crystal layer 13, the Fresnel lens surface 17 and the phase correction surface 18.
    • 一种具有透镜功能的液晶透镜元件,其能够根据施加电压的大小稳定地校正包含与入射光的聚焦变化相对应的功率分量的球面像差。 液晶透镜元件包括一对透明基板11和12,一个透明电极(12)设置有透明电极15和菲涅尔透镜表面17,并且一对透明电极中的另一个(11) 设置有相位校正表面18和透明电极16.因此,通过在一对透明电极15和16之间设置菲涅尔透镜表面17和液晶层13,可以改变实际的折射率分布 液晶层13,并且通过透过液晶层13,菲涅尔透镜表面17和相位校正表面18的波前增加正或负的功率。
    • 10. 发明授权
    • Liquid crystal lens element and optical head device
    • 液晶透镜元件和光头装置
    • US07388822B2
    • 2008-06-17
    • US11498076
    • 2006-08-03
    • Yoshiharu OoiHiromasa SatoRyuichiro ShimizuTakuji NomuraYuzuru TanabeMitsuo Oosawa
    • Yoshiharu OoiHiromasa SatoRyuichiro ShimizuTakuji NomuraYuzuru TanabeMitsuo Oosawa
    • G11B7/00
    • G11B7/1275G02F1/133526G02F1/29G02F2001/294G02F2203/18G11B7/1353G11B7/1369G11B7/1378G11B7/13925G11B2007/0006G11B2007/0013
    • A liquid crystal lens element having a lens function is provided, which is small sized without having moving part, and which can stably carry out correction of spherical aberration containing a power component corresponding to focal point change of incident light.A liquid crystal lens element which changes a focal length of light transmitted through a liquid crystal 16 according to the magnitude of the voltage applied to the liquid crystal 16 sandwiched between a pair of transparent substrates 11 and 12, which comprises transparent electrodes 13 and 14 provided on the respective transparent substrates 11 and 12 for applying a voltage for the liquid crystal 16, and a concave-convex portion 17 having a saw-tooth-shaped cross-sectional shape having a rotational symmetry about an optical axis and formed on one surface of the transparent electrode 13 with a transparent material, wherein at least concave portions of the concave-convex portion 17 are filled with the liquid crystal 16 so as to change the substantial refractive index of the liquid crystal 16 according to the magnitude of applied voltage.
    • 提供了具有透镜功能的液晶透镜元件,其尺寸小而不具有移动部分,并且可以稳定地执行包含对应于入射光的焦点变化的功率分量的球面像差的校正。 一种液晶透镜元件,其根据施加到夹在包括透明电极13和14的一对透明基板11和12之间的液晶16的电压的大小而改变透射通过液晶16的光的焦距,该透明基板11和12包括透明电极13和14 在用于施加液晶16的电压的各个透明基板11和12上,以及具有围绕光轴旋转对称的锯齿状截面形状的凹凸部17,并形成在 具有透明材料的透明电极13,其中凹凸部17的至少凹部被液晶16填充,以便根据施加电压的大小改变液晶16的实质折射率。