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    • 1. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137237A
    • 1986-06-24
    • JP25928384
    • 1984-12-10
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G11B7/09
    • G11B7/09
    • PURPOSE:To control two-dimensional movement of an optical system precisely by driving needles included in respective movable parts by driving force amplified in proportion to the weight values of two movable parts including the needles connected to respective coupling members. CONSTITUTION:Tracking control and focusing control are executed as follows. Namely, the number of times of winding of coils 22, 24 and their winding directions are equalized, a DC voltage corresponding to the output of an adder 50 is impressed on the coil 22 and a DC voltage corresponding to the output of a subtractor 52 is impressed on the coil 24. Since the gain G1 of the adder 50 is proportional to the weight of the movable part on the needle 2 side and the gain G2 of the subtractor 52 is proportional to the weight of the movable part on the needle 4 side, respective movable parts are moved so that the focusing and tracking errors of a lens 16 are precisely canceled independently of the weight of respective movable parts.
    • 目的:通过与包括连接到各个联接构件的针的两个可移动部件的重量值成比例放大的驱动力,通过驱动各个可动部件中的针来精确地控制光学系统的二维运动。 构成:跟踪控制和聚焦控制如下执行。 即,线圈22,24的绕组次数及其绕组方向相等,对应于加法器50的输出的直流电压施加在线圈22上,与减法器52的输出对应的直流电压为 由于加法器50的增益G1与针2侧的可动部的重量成正比,减法器52的增益G2与针4侧的可动部的重量成比例 移动相应的可移动部分,使得透镜16的聚焦和跟踪误差被独立于各个可移动部件的重量而被精确地消除。
    • 2. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137236A
    • 1986-06-24
    • JP25928284
    • 1984-12-10
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G11B7/085G11B7/09
    • G11B7/093G11B7/08582
    • PURPOSE:To improve driving characteristics, to simplify a driving control circuit and to improve the stability of control by practically equalizing the weight of two movable parts including needles connected to respective coupling members. CONSTITUTION:The weight of a balance weight 51 fixed to a connecting member 8 is set so that the weight of one united movable part consisting of two needles 2, the connecting member 8, a photocoupler 50 and a weight 51 is equal to that of the other united movable part consisting of two needles 4, a connecting member 9, a reflector 38, and its fixing means. Since the two movable parts have practically equal weight, the same driving force will be applied to coils 22, 24 in tracking control (i.e., the control of movement of two movable parts in the same direction on the X1-X2 direction). Consequently, the output of a control circuit part 62 can be inputted to two driving control parts 64, 65 as it is and the constitution of the circuits can be comparatively simplified.
    • 目的:提高驱动特性,简化驱动控制电路,并通过实际上均衡两个可移动部件的重量来提高控制的稳定性,这些可移动部件包括连接到各个连接部件的针头。 构成:固定在连接部件8上的平衡锤51的重量被设定为使得由两个针2,连接部件8,光电耦合器50和重物51组成的一个联合的可移动部分的重量等于 由两根针4,连接部件9,反射板38及其固定装置构成的其他联合可动部。 由于两个可移动部件具有相同的重量,因此在跟踪控制(即,在X1-X2方向上沿相同方向的两个可移动部件的移动控制)中将施加相同的驱动力到线圈22,24。 因此,可以将控制电路部分62的输出原样输入到两个驱动控制部分64,65,并且可以比较简化电路的结构。
    • 3. 发明专利
    • Optical system driving device
    • 光学系统驱动装置
    • JPS61134933A
    • 1986-06-23
    • JP25579884
    • 1984-12-05
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B7/08G11B7/09
    • PURPOSE: To move an optical system two-dimensionally for a desired distance in a high speed by arranging a pair of needles movably along guide members and connecting one end of a connecting member, which is extended obliquely with respect to the direction of the guide member, to each needle and supporting the optical system with the other ends of connecting members.
      CONSTITUTION: Needles 2 and 4 are pierced by guide members 6 and 8 extended linearly in the X
      1 -X
      2 direction. guide members 6 and 8 have outside shapes reacting to hollow squares of needles 2 and 4, and they can be moved in the X
      1 -X
      2 direction when an external force is applied to needles 2 and 4. One ends of parallel flat springs 10 and 12 as connecting members are connected to needles 2 and 4, and they are arranged obliquely with respect tot he X
      1 -X
      2 direction, and an optical system supporting member 14 is fixed to the other ends of springs 10 and 12. An object lens 16 as the optical system is fixed to and supported by the supporting member 14.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过将一对针沿着导向件可移动地连接并连接相对于导向件方向倾斜延伸的连接件的一端,以高速度二维地移动光学系统一段期望的距离 到每个针并且支撑光学系统与连接构件的另一端。 构成:针2和4由在X1-X2方向上线性延伸的引导构件6和8刺穿。 引导构件6和8具有与针2和4的中空正方形反应的外部形状,并且当外力施加到针2和4时,它们可以在X1-X2方向上移动。平行的弹簧10和12的一端 因为连接构件连接到针2和4,并且它们相对于X1-X2方向倾斜地布置,并且光​​学系统支撑构件14固定到弹簧10和12的另一端。作为 光学系统被固定到支撑构件14并由支撑构件14支撑。
    • 4. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137238A
    • 1986-06-24
    • JP25928484
    • 1984-12-10
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G02B7/00G11B7/09
    • G11B7/09
    • PURPOSE:To cancel the generation of an error by calculation by providing a means for impressing a signal having a frequency component different from that of a driving signal to one coil so as to be superposed to a driving signal and a means for detecting a signal having a frequency component different from that of the driving signal generated in the other coil on the basis of said impressed signal. CONSTITUTION:When a high frequency signal f0 from a high frequency oscillator 54 is impressed, an alternate magnetic field to be changed at the same frequency as the frequency f0 of the high frequency is generated around the coil 22. On the basis of the alternate magnetic field, a high frequency induced voltage Vf proportional to the intensity of the magnetic field at the position of a coil 24 is generated on the other coil 24 by electromagnetic induction and only a voltage Vf is supplied from a high band filter 56 to an amplifier 58.
    • 目的:通过提供一种将具有与驱动信号不同的频率分量的信号施加到一个线圈以将其叠加到驱动信号的装置,通过计算来消除误差的产生,以及用于检测具有 基于所述外加信号在与另一线圈中产生的驱动信号不同的频率分量。 构成:当来自高频振荡器54的高频信号f0被施加时,在线圈22周围产生与高频的频率f0以相同频率改变的交替磁场。基于交替磁 通过电磁感应在另一个线圈24上产生与线圈24的位置处的磁场强度成比例的高频感应电压Vf,并且只有电压Vf从高频带滤波器56提供给放大器58 。
    • 5. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137233A
    • 1986-06-24
    • JP25735484
    • 1984-12-07
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G02B7/08G11B7/085G11B7/09
    • G11B7/093
    • PURPOSE:To attain automatic control by driving needles on the basis of an operated result of a position-shifted component from an objective position of an optical system. CONSTITUTION:An adder 50 adds the outputs (a focusing error signal and a tracking error signal) of detecting circuits 46, 48 and a voltage is impressed on a coil 22 on the basis of the added signal. On the other hand, a subtractor 52 subtracts the output of the focusing error signal detecting circuit 46 from the output of the tracking error signal detecting circuit 48 and a voltage is impressed on a coil 24 on the basis of the subtracted signal. Tracking control and focusing control are executed so that a focusing error and a tracking error can be canceled by equalizing the winding directions of the coils 22, 24 and impressing the voltage corresponding to the output of the adder 50 on the coil 22 and the DC voltage corresponding to the output of the subtractor 52 on the coil 24, respectively.
    • 目的:通过基于从光学系统的目标位置的位置偏移分量的操作结果来驱动针来实现自动控制。 构成:加法器50将检测电路46,48的输出(聚焦误差信号和跟踪误差信号)相加,并且基于相加的信号将电压施加在线圈22上。 另一方面,减法器52从跟踪误差信号检测电路48的输出中减去聚焦误差信号检测电路46的输出,并且基于减法信号将电压施加在线圈24上。 执行跟踪控制和聚焦控制,以便通过均衡线圈22,24的绕组方向并且将与加法器50的输出相对应的电压施加在线圈22上以及直流电压来抵消聚焦误差和跟踪误差 对应于线圈24上的减法器52的输出。
    • 6. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137231A
    • 1986-06-24
    • JP25735284
    • 1984-12-07
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G11B7/085G11B7/09
    • G11B7/08582G11B7/09
    • PURPOSE:To guide light flux radiated from the fixed light source side always to an optical system even if a needle is moved by holding a polarizing means so as to be relatively moved in parallel only in the direction vertical to an optical axis direction and a guide member direction. CONSTITUTION:A reflector 38 is connected to a connecting member 8 through holding members 40, 41 and also connected to a connecting member 9 through holding members 42, 43. Both the end parts of respective holding members 40-43 are connected to the reflector 38 and the connecting members 8, 9 so as to be rotated around a shaft expanded along the Y direction. A tetragon (Q1, Q2, Q4, Q3) formed by connecting both end positions Q1-Q4 of the holding members 40, 41 is a parallelogram, a tetragon (Q5, Q6, Q8, Q7) formed by connecting both end positions Q5-Q8 of the holding members 42, 43 is also a paralleogram and a tetragon (Q2, Q4, Q8, Q6) formed by connecting the positions Q2, Q4, Q6, Q8 is a rectangle. Light flux reflected at a position P of a disk 26 is made to parallel light flux advancing in the Y direction by an objective lens 16 and then polarized in the X1-X2 direction by the reflector 38.
    • 目的:为了将从固定光源侧辐射的光束始终指向光学系统,即使通过保持偏振装置移动针而仅在垂直于光轴方向的方向上相对移动,并且引导件 会员方向 构成:反射器38通过保持构件40,41连接到连接构件8,并且还通过保持构件42,43连接到连接构件9.各个保持构件40-43的两个端部连接到反射器38 并且连接构件8,9围绕沿Y方向扩展的轴旋转。 通过连接保持构件40,41的两个端部位置Q1-Q4形成的四边形(Q1,Q2,Q4,Q3)是平行四边形,通过连接两个端部位置Q5-形成的四边形(Q5,Q6,Q8,Q7) 保持构件42,43的Q8也是平行图,通过连接位置Q2,Q4,Q6,Q8形成的四边形(Q2,Q4,Q8,Q6)是矩形。 在盘26的位置P处反射的光通量由平行的光束在物镜16沿Y方向前进,然后通过反射器38在X1-X2方向上偏振。
    • 7. 发明专利
    • Optical system driving device
    • 光学系统驱动装置
    • JPS61139941A
    • 1986-06-27
    • JP25989484
    • 1984-12-11
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G02B7/00G11B7/09
    • PURPOSE: To execute a random access to an information track by connecting a pair of moving pieces which can move independently and are provided with a prism or a reflecting mirror, and an optical system supporting member by diagonal connecting members, respectively, and moving an objective lens extending over a considerable distance.
      CONSTITUTION: Two parallelogram links are formed by connecting one end of moving pieces 2, 4 which can move independently in the directions X
      1 , X
      2 on a rail 10, and connecting an optical system supporting member 16 to the other end. Parallel rays from a light source 24 are refracted and reflected by a prism 30 and a reflecting mirror 32, pass through an objective lens 18 and form a spot on a disk 20, and its reflected light is led to a detector 36. A tracking control and a focus control are executed by moving the moving pieces 2, 4 in the same direction, and moving them in the direction opposite to each other, respectively. Accordingly, a random access to an information track can be executed by reducing a movable part and moving the objective lens in the right and left directions and the Y direction extending over a considerable distance.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过连接一对可独立移动的移动件,并配有棱镜或反射镜,以及通过对角线连接件分别安装光学系统支撑件并执行目标,执行对信息轨道的随机存取 透镜在相当长的距离上延伸。 构成:通过连接移动件2,4的一端形成两个平行四边形连杆,移动件2,4可在轨道10上沿X1,X2方向独立移动,并将光学系统支撑件16连接到另一端。 来自光源24的平行光线被棱镜30和反射镜32折射并反射,通过物镜18并在光盘20上形成光点,并将其反射光导向检测器36.跟踪控制 并且通过沿相同的方向移动移动片2,4并且分别在彼此相反的方向上移动它们来执行聚焦控制。 因此,可以通过减少可移动部分并在左右方向上移动物镜并且在相当长的距离上延伸的Y方向来执行对信息轨迹的随机访问。
    • 8. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137230A
    • 1986-06-24
    • JP25735184
    • 1984-12-07
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G11B7/09
    • G11B7/09
    • PURPOSE:To keep a distance of an optical system at a reference state by providing the titled device with a means for detecting relative positional relation between the optical system and a needle. CONSTITUTION:A reflection type photocoupler 50 which is a means for detecting the relative positional relation to a lens supporting member 14, i. e. the relative positional relation between the needle and a lens 16, is fitted to a connecting member 9. The output of the 1st subtractor 46 and the output of the photocoupler 50 are inputted to the 2nd subtractor, and when correct tracking is executed, two inputs to the 1st subtractor 46 are equal, so that the output VT of the 1st subtractor 46 is 0 volt. When DC currents oriented in the same direction are made to flow into coils 22, 24, forces oriented in the same direction are applied to respective coils 22, 24 in the X1-X2 direction as the result of the mutual action with a magnetic field generated by a magnet 18. Thus, the needles 2, 4 are guided by a guiding member 6 and moved in the same direction.
    • 目的:通过为标题设备提供检测光学系统和针头之间的相对位置关系的装置,使光学系统的距离保持在基准状态。 构成:作为用于检测与透镜支撑构件14的相对位置关系的装置的反射型光电耦合器50, e。 针和透镜16之间的相对位置关系被安装到连接构件9.第一减法器46的输出和光电耦合器50的输出被输入到第二减法器,并且当执行正确的跟踪时,两个输入 到第一减法器46相等,使得第一减法器46的输出VT为0伏。 当使相同方向的直流电流流入线圈22,24时,由于与产生的磁场的相互作用的结果,以相同方向定向的力作用在X1-X2方向上的相应线圈22,24上 由此,针2,4由引导构件6引导并沿同一方向移动。
    • 9. 发明专利
    • Driving device of optical system
    • 光系统驱动装置
    • JPS61137229A
    • 1986-06-24
    • JP25735584
    • 1984-12-07
    • Canon Electronics IncCanon Inc
    • KANDA SHIGETOBABA HISATOSHIHASEGAWA MITSUHIROMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G02B7/08G11B7/085G11B7/09
    • G11B7/09
    • PURPOSE:To keep a distance of an optical system at a reference state by providing the titled device with a means for detecting the distance between two movable parts. CONSTITUTION:When detecting the distance between two connecting members 8, 9 at the time of correct tracking (reference state), a photocoupler 54 outputs '0' and is adjusted so as to obtain an output corresponding to the shifted distance from the distance in the reference state. When DC currents oriented in the same direction are made to flow into coils 22, 24, forces oriented in the same directions are applied to respective coils 22, 24 in the X1-X2 direction as the result of the mutual action with a magnetic field generated by a magnet 18. Thus, needles 2, 4 are guided by a guide member 6 and moved in the same direction.
    • 目的:通过为标题设备提供检测两个可移动部件之间的距离的装置,使光学系统的距离保持在基准状态。 构成:当检测到正确跟踪时的两个连接构件8,9之间的距离(基准状态)时,光电耦合器54输出“0”并进行调整,从而获得对应于距离的移动距离的输出 参考状态。 当使相同方向定向的直流电流流入线圈22,24时,由于与产生的磁场的相互作用的结果,以相同方向定向的力施加到X1-X2方向上的相应线圈22,24 因此,针2,4由引导构件6引导并沿同一方向移动。
    • 10. 发明专利
    • Optical system driving device
    • 光学系统驱动装置
    • JPS61139942A
    • 1986-06-27
    • JP25989584
    • 1984-12-11
    • Canon Electronics IncCanon Inc
    • HASEGAWA MITSUHIROKANDA SHIGETOBABA HISATOSHIMORI YASUHITOTOGAWA MASAYUKIIMAI YASUAKI
    • G02B26/10G02B7/00G11B7/09
    • PURPOSE: To move an optical system two-dimensionally at a high speed extending over a desired distance by a simple constitution, by connecting a pair of moving pieces and an optical supporting member by connecting members, respectively, and executing a focus control and a tracking control by changing the direction of a current flowing to a coil.
      CONSTITUTION: Members 8, 9 for connecting two pairs of moving pieces 2, 4 which can move freely on a guide member 6, and an optical system supporting member 14 are connected to parallel plate springs 10, 12, respectively. When a current of the same direction is made to flow to coils 22, 24 of the moving piece, an objective lens 16 moves in the tracking direction by an action of a magnet 18, and when a current of the opposite direction is made to flow to the coils, the moving pieces 2, 4 move in the direction opposite to each other and move in the focal direction. When a ratio of a center distance X of the coils 22, 24, a coil diameter A, and its length L is 1:1.6:0.7, a good sensitivity is obtained. Accordingly, the movable part is small and the device is light in weight, therefore, an optical system can be moved two-dimensionally at a high speed extending over a considerable distance.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过简单的结构,通过连接构件分别连接一对移动件和光学支撑构件,以高速度以高速度以一定的速度移动光学系统,并执行聚焦控制和跟踪 通过改变流向线圈的电流的方向进行控制。 构成:用于连接能够在导向构件6上自由移动的两对移动片2,4和光学系统支撑构件14的构件8,9分别连接到平行板簧10,12。 当使相同方向的电流流到移动片的线圈22,24时,物镜16通过磁体18的作用在跟踪方向上移动,并且当使相反方向的电流流动时 对于线圈,移动片2,4向彼此相反的方向移动并沿着焦点方向移动。 当线圈22,24的中心距离X与线圈直径A及其长度L的比率为1:1.6:0.7时,获得良好的灵敏度。 因此,可移动部分体积小,装置重量轻,因此光学系统可以以相当长的距离延伸的高速二维移动。