专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0391359B1 Photo detecting device 失效
标题翻译：感光器件。
公开(公告)号：EP0391359B1
公开(公告)日：1995-06-28
申请号：EP90106380.0
申请日：1990-04-03
申请人： SHARP KABUSHIKI KAISHA
发明人： Yoshifusa, Koji , Nishihara, Hikaru , Yokota, Taizo
IPC分类号： G11B7/13 , H04N5/217 , H04N5/335
CPC分类号： G11B7/131 , G11B7/0903

2. 发明公开

EP0391359A2 Photo detecting device 失效
标题翻译：摄影师Vorrichtung。
公开(公告)号：EP0391359A2
公开(公告)日：1990-10-10
申请号：EP90106380.0
申请日：1990-04-03
申请人： SHARP KABUSHIKI KAISHA
发明人： Yoshifusa, Koji , Nishihara, Hikaru , Yokota, Taizo
IPC分类号： G11B7/13 , H04N5/217 , H04N5/335
CPC分类号： G11B7/131 , G11B7/0903
摘要： A photo detecting device (5) has a photoelectric converting element (7) formed on a semiconductor chip with the photoelectric converting element (7) being divided into first and second light receiving regions (7a, 7b), and the photo detecting device further has a signal processing circuit formed on the same semiconductor chip, with the signal processing circuit including subtracting means (A₁) for subtracting an output signal from the second light receiving region (7b) from an output signal from the first light receiving region (7a).
摘要翻译：光检测装置（5）具有形成在半导体芯片上的光电转换元件（7），其中光电转换元件（7）被分成第一和第二光接收区域（7a，7b），并且光检测装置还具有形成在同一半导体芯片上的信号处理电路，信号处理电路包括从第一光接收区域（7a）的输出信号中减去来自第二光接收区域（7b）的输出信号的减法装置（A1）。

3. 发明公开

EP0534373A2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：EP0534373A2
公开(公告)日：1993-03-31
申请号：EP92116204.6
申请日：1992-09-22
申请人： SHARP KABUSHIKI KAISHA
发明人： Yokota, Taizo
IPC分类号： G11B7/12 , G11B7/135 , G11B11/10
CPC分类号： G11B11/10545 , G11B7/124
摘要： The optical pickup device provided with light generation means (1) for emitting a linearly polarized light to a recording medium (7) comprises: a first diffraction element (14) for diffracting a light reflected from the recording medium (7); a second diffraction element (15) for separating a first diffracted light from the first diffraction element (14) into a transmitted light and a first order diffracted light according to a polarization component of the first diffracted light; light receiving means (16, 17) for receiving the transmitted light and the first order diffracted light from the second diffraction element and converting them into electric signals. This optical pickup device is arranged such that grating pitches (14a, 14b, 15a, 15b) of the first and second diffraction elements (14, 15) are set so that an angle of incidence of the first diffracted light that is incident on the second diffraction element (15) from the first diffraction element (14) is equal to a Bragg angle of the second diffraction element (15). With this arrangement, an optical axis can be easily adjusted between the first diffraction element (14) and the second diffraction element (15). Moreover, if the first diffraction element (14) and the second diffraction element (15) are laminated together, an adjustment in the optical axis is no longer required.
摘要翻译：具有用于向记录介质（7）发射线性偏振光的光产生装置（1）的光学拾取装置包括：第一衍射元件（14），用于衍射从记录介质（7）反射的光; 第二衍射元件（15），用于根据第一衍射光的偏振分量将来自第一衍射元件（14）的第一衍射光分离为透射光和第一级衍射光; 光接收装置（16,17），用于接收来自第二衍射元件的透射光和第一级衍射光并将它们转换成电信号。该光学拾取装置被设置为使得第一和第二衍射元件（14,15）的光栅间距（14a，14b，15a，15b）被设定为使得入射到第二衍射元件来自第一衍射元件（14）的衍射元件（15）等于第二衍射元件（15）的布拉格角。由此，能够容易地调整第一衍射元件（14）和第二衍射元件（15）之间的光轴。此外，如果第一衍射元件（14）和第二衍射元件（15）层叠在一起，则不再需要调节光轴。

4. 发明公开

EP0357323A2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：EP0357323A2
公开(公告)日：1990-03-07
申请号：EP89308520.9
申请日：1989-08-23
申请人： SHARP KABUSHIKI KAISHA
发明人： Yokota, Taizo
IPC分类号： G11B7/095 , G11B7/09 , G11B7/135
CPC分类号： G11B7/13 , G11B7/0916 , G11B7/0956 , G11B7/1353
摘要： An optical pickup device for focusing an irradiating ray from a light emitting element (1) on a recording medium (5) and letting a reflected ray reflected from this recording medium focus on a light receiving element (6) is characterized in comprising a diffracting element (2) disposed before the light emitting element and the light receiving element, at least a first diffraction region (2a) included in the diffracting element for separating the irradiating ray from the light emitting element into a main beam and sub-beams shifted from the main beam in a direction perpendicular to a track direction of the track where the main beam is focused, a second diffraction region (2b) included in the diffracting element for directing a reflected ray of the main beam reflected from the recording medium onto a main light receiving element and directing reflected rays of the sub-beams onto sub-light receiving elements, and an arithmetic circuit (not shown) for detecting a tilt error signal showing the sub-beam's focusing condition according to the output of the sub-light receiving elements, whereby an optical pickup device does not require installment of any separate tilt sensor for detection of a tilt signal, and also enables prevention of increasing the number of components and the increase of cost as a result of increased assembly steps and/or the required man-hours.
摘要翻译：一种用于将来自发光元件（1）的照射光线聚焦在记录介质（5）上并且使从该记录介质反射的反射光线聚焦在光接收元件（6）上的光学拾取装置，其特征在于包括衍射元件（2），配置在所述发光元件和所述受光元件的前方;至少包含在所述衍射元件中的第一衍射区域（2a），用于将所述照射光线从所述发光元件分离成主光束;以及副光束，在与主光束聚焦的轨道的轨道方向垂直的方向上的主光束;包括在衍射元件中的第二衍射区域（2b），用于将从记录介质反射的主光束的反射光线引导到主光束接收元件并将子光束的反射光线引导到子光接收元件上;以及运算电路（未示出），用于检测倾斜误差信号 g根据子光接收元件的输出调整子光束的聚焦状态，由此光学拾取装置不需要安装任何用于检测倾斜信号的单独的倾斜传感器，并且还能够防止增加元件的数量以及由于增加组装步骤和/或所需的工时而导致的成本增加。

5. 发明公开

EP0534373A3 Optical pickup device 失效
公开(公告)号：EP0534373A3
公开(公告)日：1993-06-09
申请号：EP92116204.6
申请日：1992-09-22
申请人： SHARP KABUSHIKI KAISHA
发明人： Yokota, Taizo
IPC分类号： G11B7/12 , G11B7/135 , G11B11/10
CPC分类号： G11B11/10545 , G11B7/124
摘要： The optical pickup device provided with light generation means (1) for emitting a linearly polarized light to a recording medium (7) comprises: a first diffraction element (14) for diffracting a light reflected from the recording medium (7); a second diffraction element (15) for separating a first diffracted light from the first diffraction element (14) into a transmitted light and a first order diffracted light according to a polarization component of the first diffracted light; light receiving means (16, 17) for receiving the transmitted light and the first order diffracted light from the second diffraction element and converting them into electric signals. This optical pickup device is arranged such that grating pitches (14a, 14b, 15a, 15b) of the first and second diffraction elements (14, 15) are set so that an angle of incidence of the first diffracted light that is incident on the second diffraction element (15) from the first diffraction element (14) is equal to a Bragg angle of the second diffraction element (15). With this arrangement, an optical axis can be easily adjusted between the first diffraction element (14) and the second diffraction element (15). Moreover, if the first diffraction element (14) and the second diffraction element (15) are laminated together, an adjustment in the optical axis is no longer required.

6. 发明公开

EP0391359A3 Photo detecting device 失效
标题翻译：照片检测装置
公开(公告)号：EP0391359A3
公开(公告)日：1992-08-19
申请号：EP90106380.0
申请日：1990-04-03
申请人： SHARP KABUSHIKI KAISHA
发明人： Yoshifusa, Koji , Nishihara, Hikaru , Yokota, Taizo
IPC分类号： G11B7/13 , H04N5/217 , H04N5/335
CPC分类号： G11B7/131 , G11B7/0903
摘要： A photo detecting device (5) has a photoelectric converting element (7) formed on a semiconductor chip with the photoelectric converting element (7) being divided into first and second light receiving regions (7a, 7b), and the photo detecting device further has a signal processing circuit formed on the same semiconductor chip, with the signal processing circuit including subtracting means (A₁) for subtracting an output signal from the second light receiving region (7b) from an output signal from the first light receiving region (7a).

7. 发明公开

EP0377454A2 Image reading apparatus 失效
标题翻译：图像读取设备
公开(公告)号：EP0377454A2
公开(公告)日：1990-07-11
申请号：EP90100101.6
申请日：1990-01-03
申请人： SHARP KABUSHIKI KAISHA
发明人： Tsuji, Shigeki , Kurata, Yukio , Yokota, Taizo
IPC分类号： H04N1/028 , G02B6/06
CPC分类号： G02B5/1885 , G02B3/0056 , G02B3/08 , G02B27/4211 , G02B27/4227 , G02B27/4272 , H04N1/0311 , H04N1/0312 , Y02E10/52
摘要： This image reading apparatus includes a light source (1) for illuminating an object, a lens array (5) for focusing reflected light from the object into a predetermined position, and an image sensor (3) for reading an image formed by the focused light. The lens array (5) includes a transparent base (5a), and a diffraction element (8) provided on at least an incident plane and an emission plane of the base (5a). The lens array constitute an array including a plurality of lens areas. The employment of the diffraction element renders a shorter imaging distance of light from the object and thus a reduction in the size of the apparatus.
摘要翻译：该图像读取设备包括用于照射物体的光源（1），用于将来自物体的反射光聚焦到预定位置的透镜阵列（5）和用于读取由聚焦光形成的图像的图像传感器（3）。透镜阵列（5）具有透明基体（5a）和至少设置在基体（5a）的入射面和出射面上的衍射元件（8）。透镜阵列构成包括多个透镜区域的阵列。衍射元件的使用使得来自物体的光的成像距离更短，并因此减小了装置的尺寸。

8. 发明授权

EP0534373B1 Optical pickup device 失效
标题翻译：光学再现装置
公开(公告)号：EP0534373B1
公开(公告)日：1998-03-04
申请号：EP92116204.6
申请日：1992-09-22
申请人： SHARP KABUSHIKI KAISHA
发明人： Yokota, Taizo
IPC分类号： G11B7/12 , G11B7/135 , G11B11/10
CPC分类号： G11B11/10545 , G11B7/124

9. 发明授权

EP0354019B1 Optical head device for reading information stored in a recording medium 失效
标题翻译：的光学头装置用于存储在信息记录介质中读取信息
公开(公告)号：EP0354019B1
公开(公告)日：1996-01-24
申请号：EP89307861.8
申请日：1989-08-02
申请人： SHARP KABUSHIKI KAISHA
发明人： Tsuji, Shigeki , Yokota, Taizo
IPC分类号： G11B7/09 , G11B7/135
CPC分类号： G11B7/1381 , G11B7/0903 , G11B7/1353

10. 发明授权

EP0377454B1 Image reading apparatus 失效
公开(公告)号：EP0377454B1
公开(公告)日：1994-11-02
申请号：EP90100101.6
申请日：1990-01-03
申请人： SHARP KABUSHIKI KAISHA
发明人： Tsuji, Shigeki , Kurata, Yukio , Yokota, Taizo
IPC分类号： H04N1/028 , G02B6/06
CPC分类号： G02B5/1885 , G02B3/0056 , G02B3/08 , G02B27/4211 , G02B27/4227 , G02B27/4272 , H04N1/0311 , H04N1/0312 , Y02E10/52

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式