-
11.发明授权
公开(公告)号：US5060217A
公开(公告)日：1991-10-22
申请号：US358258
申请日：1989-05-30
申请人： Hidehiro Kume
发明人： Hidehiro Kume
摘要： An optical head device for use in recording and/or reproduction of information comprises a light beam generating portion, a lens element for causing a light beam obtained from the light beam generating portion to impinge upon a record medium and receiving the light beam from the recording medium, and a photodetecting portion to which the light beam from the record medium received by the lens element is guided and which has three photosensitive elements separated from each other by a couple of parallel dividing portions and disposed to form a common light receiving plane on which a beam spot is formed by the light beam guided to the photodetecting portion for detecting the light beam guided to the photodetecting portion to produce respective detection output signals from which a tracking error signal is produced, wherein each of the parallel dividing portions extends along a direction selected to be at an angle within an angle rqnge of 0 to 90 degrees to a direction of movement of a diffraction pattern appearing in the beam spot formed on the common light receiving plane in accordance with a record track in the record medium.
-
公开(公告)号：US5005162A
公开(公告)日：1991-04-02
申请号：US338184
申请日：1989-04-14
申请人： Koji Mitsumori , Hidehiro Kume
发明人： Koji Mitsumori , Hidehiro Kume
CPC分类号： G11B7/093 , G11B7/123 , G11B7/13 , G11B7/1362 , G11B7/0912
摘要： An optical head device for use in a disc player comprises a movable optical assembly in which an objective lens, first and second mirrors, and a light beam generating and detecting unit are supported in common by a supporting member, and a driving mechanism for moving the movable optical assembly in both a first direction along an optical axis of the objective lens and a second direction perpendicular to the first direction, wherein, in the movable optical assembly, a light beam generated in the light beam generating and detecting unit is reflected twice by the first and second mirrors to be changed in its traveling direction, and focused by the objective lens at a position on the optical axis of the objective lens, and a light beam coming from the outside of the movable optical assembly is received by the objective lens to pass therethrough to the second mirror, reflected twice by the second and first mirrors to be changed in its traveling direction, and guided to a photodetector contained in the light beam generating and detecting unit.
摘要翻译： 一种用于光盘播放器的光头装置，包括：可移动光学组件，其中物镜，第一和第二反射镜以及光束产生和检测单元由支撑部件共同支撑;以及驱动机构， 可移动光学组件沿着物镜的光轴的第一方向和垂直于第一方向的第二方向，其中在可移动光学组件中，在光束产生和检测单元中产生的光束被两次反射 第一和第二反射镜在其行进方向上改变，并且由物镜聚焦在物镜的光轴上的位置，并且来自可移动光学组件的外部的光束被物镜 通过第二反射镜，由第二反射镜和第二反射镜反射两次，以在其行进方向上改变，并被引导到光电检测器连续 在光束产生和检测单元中。
-
公开(公告)号：US4893296A
公开(公告)日：1990-01-09
申请号：US219915
申请日：1988-07-15
申请人： Yoshiyuki Matsumoto , Hidehiro Kume , Koji Mitsumori , You Yoshitoshi , Etsufumi Yamamoto , Hiroshi Oinoue
发明人： Yoshiyuki Matsumoto , Hidehiro Kume , Koji Mitsumori , You Yoshitoshi , Etsufumi Yamamoto , Hiroshi Oinoue
CPC分类号： G11B7/1359 , G11B7/123 , G11B7/1356 , H01S5/02248 , H01S5/005 , H01S5/0683
摘要： An optical pickup device having a semiconductor laser element mounted on a substrate, a photo detector formed on the substrate to receive a laser beam emitted from the semiconductor laser element and an optical element mounted on the substrate to cover the photo detector to branch the direction of optical path of the laser beam, the optical element having its face opposing the semiconductor laser element formed as an inclined face on which a semitransparent reflection film is deposited. The optical path branching optical element is provided with preventing means by which, of laser beams incident on the optical element, a laser beam reflected and/or scattered within the optical element is prevented from irradiating the photo detector.
-
公开(公告)号：US4823331A
公开(公告)日：1989-04-18
申请号：US130112
申请日：1987-10-23
CPC分类号： G11B7/1356 , G11B7/0912 , G11B7/123 , G11B7/131 , G11B7/0925
摘要： The present invention relates to a focusing detection apparatus (1) for detecting a focusing state of an optical recording medium. So as to achieve compactness and low cost of the focusing detection apparatus (1), focusing detection using two photosensors (33) (34) located in front of and behind a convergent point of a beam (45) reflected by the optical recording medium can be achieved by a single prism (37), and a plurality of optical components (31) (33) (34) (37) are formed integrally and can be arranged on a single surface of a semiconductor substrate (32). The present invention is applicable to an optical head requiring compactness, light weight, and low cost as well as high performance.
-
公开(公告)号：US5965982A
公开(公告)日：1999-10-12
申请号：US924141
申请日：1997-09-05
申请人： Masumi Tachino , Hidehiro Kume , Suenori Kimura , Takashi Goto
发明人： Masumi Tachino , Hidehiro Kume , Suenori Kimura , Takashi Goto
CPC分类号： H01J43/28
摘要： The present invention relates to a versatile side-on type photomultiplier comprising a structure for improving the uniformity in light receiving sensitivity. Disposed on the outer peripheral surface of a sealed envelope of this photomultiplier is a restricting member which guides light to be detected into, of the light receiving surface of a photocathode, an effective region where the light receiving sensitivity is high, thereby restraining the light to be detected from reaching the outside of the effective region.
摘要翻译： 本发明涉及一种通用的侧接式光电倍增管，其包括用于提高光接收灵敏度的均匀性的结构。 在该光电倍增管的密封外壳的外周面上配置有将被检测光引导到光电面的受光面的受光灵敏度高的有效区域的限制构件， 被检测到达到有效区域的外部。
-
16.发明授权Side-on type photomultiplier comprising an envelope having an opening, a lens element, and a lens positioning structure 失效侧面型光电倍增器，其包括具有开口的外壳，透镜元件和透镜定位结构
公开(公告)号：US5847380A
公开(公告)日：1998-12-08
申请号：US924263
申请日：1997-09-05
申请人： Masumi Tachino , Hidehiro Kume , Suenori Kimura , Takashi Goto
发明人： Masumi Tachino , Hidehiro Kume , Suenori Kimura , Takashi Goto
摘要： The present invention relates to a versatile side-on type photomultiplier comprising a structure for improving the uniformity in light receiving sensitivity. This photomultiplier comprises a positioning structure for precisely positioning, with respect to the light receiving surface of a photocathode, a lens element which guides light to be detected to a photocathode and constitutes a part of an envelope accommodating the photocathode. The precisely positioned lens element guides the light to be detected into, of the light receiving surface of the photocathode, an effective region where the light receiving sensitivity is high, thereby restraining the light to be detected from reaching the outside of the effective region.
摘要翻译： 本发明涉及一种通用的侧接式光电倍增管，其包括用于提高光接收灵敏度的均匀性的结构。 该光电倍增管包括用于相对于光电阴极的光接收表面精确定位将光检测的光引导到光电阴极并构成容纳光电阴极的封套的一部分的透镜元件的定位结构。 精确定位的透镜元件将待检测的光引导到光电阴极的光接收表面中，其中光接收灵敏度高的有效区域，从而抑制被检测的光到达有效区域的外部。
-
17.发明授权公开(公告)号：US07336367B2
公开(公告)日：2008-02-26
申请号：US11654815
申请日：2007-01-18
IPC分类号： G01B9/02
CPC分类号： G01D5/38
摘要： A displacement detection device having excellent stability with the lapse of time and suitable for reduction in size and weight includes: a light source for emitting light; polarizing light splitting unit for splitting the light emitted from the light source into two light beams having difference polarized components, radiating the two light beams to an external optical system, and combining the two light beams reflected by the external optical system to generate combined light; a phase plate provided between the light source and the polarizing light splitting unit and adapted for changing the polarization state of the light emitted from the light source and leading the light to the polarizing light splitting unit; light splitting films for splitting the combined light generated by the polarizing light splitting unit into plural light beams; polarizing units for transmitting only a predetermined polarized components of the split combined light beams; and light-receiving elements for photoelectrically converting coherent light beams transmitted through the polarizing units and thus generating an interference signal.
摘要翻译： 具有优异的时间稳定性和适合于减小尺寸和重量的位移检测装置包括：用于发光的光源; 偏振光分离单元，用于将从光源发射的光分成具有差分偏振分量的两个光束，将两个光束照射到外部光学系统，并且组合由外部光学系统反射的两个光束以产生组合光; 设置在所述光源和所述偏振光分离单元之间的相位板，用于改变从所述光源发射的光的偏振状态并将光引导到所述偏振光分离单元; 用于将由偏振光分离单元产生的组合光分离成多个光束的分光膜; 用于仅透射分离的组合光束的预定偏振分量的偏振单元; 以及用于光电转换透射通过偏振单元的相干光束并由此产生干涉信号的光接收元件。
-
18.发明授权Light-emitting/receiving combined unit and displacement sensors using the same 有权发光/接收组合单元和使用其的位移传感器公开(公告)号：US06980303B2
公开(公告)日：2005-12-27
申请号：US10240417
申请日：2002-02-01
CPC分类号： G01D5/38
摘要： The present invention provides a light emitting/receiving composite unit (1) for emitting and receiving lights, which includes a light source (3), an optical splitting unit (4) for splitting returning lights to the composite unit (1) into a plurality of lights, a polarizing unit (5) for increasing and decreasing quantity of lights transmitted therefrom corresponding to polarization state of the returning lights, and an optical receiving unit (6) which has a plurality of photo-detecting elements (6—1 to 6—4) for detecting the lights transmitted through the polarizing unit (5), which are unitedly integrated into one unit. Also, the present invention provides a displacement detection apparatus of grating interference type, which includes thus unitedly integrated composite unit (1), and an external optical system of an objective unit having a reflection type diffraction grating RG, a reflecting unit (R1a, R1b) for reflecting lights from the composite unit (1) to the reflection type diffraction grating RG, a polarizing unit (WP1a, WP1b) for changing polarization state of diffracted lights from the reflection type diffraction grating RG, and a reflecting unit (R2a, R2b) for reflecting lights transmitted through the polarizing unit (WP1a, WP1b) to cause the reflected lights go backward.
摘要翻译： 本发明提供了一种用于发光和接收光的发光/接收复合单元（1），其包括光源（3），用于将复归单元（1）的返回光分离成多个的光分离单元（4） 的光接收单元（6），其具有用于增加和减少与其相对应的返回光的偏振状态的光传输的光量;以及光接收单元（6），其具有多个光检测元件（6〜 用于检测透射通过偏振单元（5）的光，其被统一地集成到一个单元中。 此外，本发明提供一种光栅干涉型位移检测装置，其包括如此一体化的复合单元（1）和具有反射型衍射光栅RG的目标单元的外部光学系统，反射单元（R 1a ，用于将来自复合单元（1）的光反射到反射型衍射光栅RG的偏振单元（WP1a，WP1b），用于改变来自反射型衍射光栅RG的衍射光的偏振状态， 以及用于反射透射通过偏振单元（WP1a，WP1b）的光的反射单元（R 2 a，R 2 b），以使反射光向后移动。
-
公开(公告)号：US5181193A
公开(公告)日：1993-01-19
申请号：US430132
申请日：1989-11-01
摘要： An optical pickup device for a recording and/or reproducing apparatus in which a light beam from a semiconductor laser element is converged by an object lens and irradiated on recording tracks of an optical disk and the light reflected by the disk is sensed to read and/or record data signals. The device includes photosensors each having an insensitive central zone and adapted to receive the reflected light to generate tracking error signals. The semiconductor laser element is so arranged that the light beam is projected on the optical disk so that the meridional plane of the light beam orthogonal to the junction plane of semiconductor layers of the semiconductor laser element is at such an angle with respect to a tangential line drawn to one of the recording tracks of the optical disk that non-symmetricities on both sides of said tangential line as a function of the de-focusing direction of the beam spot may be compensated.
-
公开(公告)号：US5144614A
公开(公告)日：1992-09-01
申请号：US837547
申请日：1992-02-14
CPC分类号： G11B7/13 , G11B7/123 , G11B7/127 , G11B7/1356
摘要： An optical pickup device is disclosed in which a light beam from a laser light source is converged by an object lens on a signal recording surface of an optical disk to follow recording tracks formed on the signal recording surface to read out or write data on or from the signal recording surface. A semiconductor laser unit is used as a laser light source and is so arranged that the meridional plane of the light beam emanating from the semiconductor laser unit is inclined 30.degree. to 60.degree. with respect to the tangential direction of the recording track.
摘要翻译： 公开了一种光拾取装置，其中来自激光源的光束被物镜会聚在光盘的信号记录表面上，以跟随形成在信号记录表面上的记录轨迹，以便在或从 信号记录面。 半导体激光单元被用作激光源，并且被布置成使得从半导体激光单元发出的光束的子午面相对于记录轨道的切线方向倾斜30°至60°。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.012 秒)
