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11. 发明申请

US20080259750A1 Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
公开(公告)号：US20080259750A1
公开(公告)日：2008-10-23
申请号：US11981236
申请日：2007-10-31
申请人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
发明人： Shin-ichi Kadowaki , Kousei Sano , Akihiro Arai , Katsuhiko Yasuda , Tomotada Kamei , Hiroaki Yamamoto , Fumitomo Yamasaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0903 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/13927 , G11B2007/0013
摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

12. 发明授权

US07126905B2 Information recording medium and information recording/reproducing apparatus to increase recording density 有权
标题翻译：信息记录介质和信息记录/再现装置，以增加记录密度
公开(公告)号：US07126905B2
公开(公告)日：2006-10-24
申请号：US10362039
申请日：2001-09-28
申请人： Tetsuo Saimi , Akihiro Arai , Tohru Nakamura
发明人： Tetsuo Saimi , Akihiro Arai , Tohru Nakamura
IPC分类号： G11B7/00
CPC分类号： G11B7/252 , G11B7/1374 , G11B7/13922 , G11B7/24 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B2007/13727
摘要： An information recording medium 101 includes: a transparent substrate 109 having a first surface A and a second surface B opposite to the first surface A; reflectance reduction means 110 provided on the first surface A of the transparent substrate 109; and an information recording layer 120 provided on the second surface B of the transparent substrate 109.
摘要翻译：信息记录介质101包括：具有第一表面A和与第一表面A相对的第二表面B的透明基板109; 设置在透明基板109的第一面A上的反射率降低单元110; 以及设置在透明基板109的第二面B上的信息记录层120。

13. 发明授权

US06185167B2 Optical head and information recording and reproduction apparatus 失效
标题翻译：光头和信息记录和再现设备
公开(公告)号：US06185167B2
公开(公告)日：2001-02-06
申请号：US09108009
申请日：1998-06-30
申请人： Akihiro Arai , Takao Hayashi , Tohru Nakamura , Takayuki Nagata
发明人： Akihiro Arai , Takao Hayashi , Tohru Nakamura , Takayuki Nagata
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0901 , G11B7/0912 , G11B7/094 , G11B7/123
摘要： An optical head is composed of an objective 2, a composite diffraction element 3 having six areas divided by three parting lines 3a to 3c; and a substrate 5 on which a light-emitting element and a plurality of light-receiving elements are arranged. A focus and a tracking error signals are generated based on signals from the light-receiving elements that receive those of a plurality of luminous fluxes divided by the composite diffraction element 3 which result from passage through the portion between the parting lines 3b and 3c. In generating the tracking error signal, signals from the light-receiving elements that receive luminous fluxes resulting from passage through the outside of the parting lines 3b and 3c are used to correct an offset in the tracking error signal caused by the movement of the objective.
摘要翻译：光学头由物镜2，复合衍射元件3组成，具有由三个分型线3a至3c分隔的六个区域; 以及配置有发光元件和多个受光元件的基板5。基于来自光接收元件的信号产生聚焦和跟踪误差信号，所述光接收元件接收由通过分割线3b和3c之间的部分导致的复合衍射元件3分割的多个光束的光束接收元件。在产生跟踪误差信号时，来自接收由分流线3b和3c的外部通过的光通量的光接收元件的信号用于校正由于物镜的移动引起的跟踪误差信号中的偏移。

14. 发明授权

US5915134A Switching device with DX contacts for a camera 失效
标题翻译：用于相机的DX触点开关装置
公开(公告)号：US5915134A
公开(公告)日：1999-06-22
申请号：US95840
申请日：1998-06-11
申请人： Akihiro Arai , Yutaka Kamijo
发明人： Akihiro Arai , Yutaka Kamijo
IPC分类号： G03B7/24 , G03B17/40
CPC分类号： G03B17/40 , G03B7/24 , G03B2206/008 , G03B2217/002
摘要： A release switch is directly activated by a self-timer button, and a shutter release button first activates a photometric switch, then the release switch. The self-timer operation is carried out in response to the activation of only the release switch, a photometric operation is carried out in response to the activation of only the photometric switch, and a shutter release operation is carried out in response to the secuential activation of both the photometric switch and the release switch.
摘要翻译：释放开关由自拍按钮直接启动，快门释放按钮首先激活测光开关，然后激活释放开关。响应于仅释放释放开关的激活而进行自拍操作，响应于仅测光开关的激活而进行光度测量操作，并且响应于分离激活执行快门释放操作的光度开关和释放开关。

15. 发明授权

US5475458A Albada finder 失效
标题翻译：阿尔巴达找人
公开(公告)号：US5475458A
公开(公告)日：1995-12-12
申请号：US331796
申请日：1994-10-31
申请人： Akihiro Arai
发明人： Akihiro Arai
IPC分类号： G03B13/08 , G03B13/06 , G03B13/02
CPC分类号： G03B13/06
摘要： An Albada finder has a negative objective lens and a positive eyepiece lens. A frame is formed inside the area of the object-side surface of the positive eyepiece lens and a partial reflection area is formed on the eyepiece-side surface of the negative objective lens. The partial reflection area reflects an image of the frame. The frame is formed to enclose a small area of the object-side surface of the eyepiece lens while the partial reflection area is formed to enclose a small area of the eyepiece-side surface of the objective lens. Substantially all of the remaining area of the eyepiece-side surface of the negative objective lens not enclosed by the partial reflection area fully transmits all light incident on the surface.
摘要翻译：一个Albada取景器有一个负的物镜和一个正的目镜。在正目镜透镜的物体侧表面的区域内形成框架，并且在负型物镜的目镜侧表面上形成部分反射区域。部分反射区域反映框架的图像。框架形成为包围目镜透镜的物体侧表面的小区域，同时形成部分反射区域以包围物镜的目镜侧表面的小区域。负物镜的未被部分反射区域包围的目镜侧表面的基本上所有剩余区域完全透射入射在表面上的所有光。

16. 发明授权

US5255026A Stereo eye fundus camera 失效
标题翻译：立体眼眼底照相机
公开(公告)号：US5255026A
公开(公告)日：1993-10-19
申请号：US924571
申请日：1992-08-05
申请人： Akihiro Arai , Takeyuki Kato
发明人： Akihiro Arai , Takeyuki Kato
IPC分类号： A61B3/14
CPC分类号： A61B3/14
摘要： A stereo eye fundus camera has an illuminating optical system for illuminating the fundus of an eye to be tested through an objective lens, and a taking optical system for taking the eye fundus through the objective lens. The feature of the stereo eye fundus camera is that it has a mark projecting optical system for projecting at least three marks on the eye fundus such that the three marks are not on the same straight line.
摘要翻译：立体眼底照相机具有用于通过物镜照射要测试的眼睛的眼底的照明光学系统，以及用于通过物镜拍摄眼底的拍摄光学系统。立体眼底照相机的特征在于其具有用于在眼底上投射至少三个标记的标记投影光学系统，使得三个标记不在同一条直线上。

17. 发明授权

US4920368A Built-in flash system 失效
标题翻译：内置闪光灯系统
公开(公告)号：US4920368A
公开(公告)日：1990-04-24
申请号：US306436
申请日：1989-02-03
申请人： Akihiro Arai , Tetsuji Shono
发明人： Akihiro Arai , Tetsuji Shono
IPC分类号： G03B15/05
CPC分类号： G03B15/05 , G03B2215/051
摘要： A built-in flash system is disclosed which includes a housing chamber provided in the upper front of a penta-house of a finder optical system, and a casing provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber, the casing is arranged to be moved between the projecting position and the housing position by a linkage mechanisms disposed at sides of said built-in flash system.

18. 发明授权

US4194824A Camera equipped with automatic unwinding device 失效
标题翻译：相机配备自动展开装置
公开(公告)号：US4194824A
公开(公告)日：1980-03-25
申请号：US917239
申请日：1978-06-20
申请人： Akihiro Arai , Eiji Yamamori
发明人： Akihiro Arai , Eiji Yamamori
IPC分类号： G03B17/00 , G03B17/42 , G03B1/18 , G03B19/12
CPC分类号： G03B17/425
摘要： A device for decoupling the film transport mechanism in a camera is operable either independently, for performing multiple-exposure photography, or by an unwinding lever which simultaneously reverses the drive direction of the film for unwinding.
摘要翻译：用于使相机中的胶片传送机构解耦的设备可以独立地操作，用于执行多曝光照相，或者可以通过展开杆操作，同时反转胶片的驱动方向以展开。

19. 发明授权

US4191463A Counter device for multiple exposure in a camera 失效
标题翻译：相机中多次曝光的计数器
公开(公告)号：US4191463A
公开(公告)日：1980-03-04
申请号：US916386
申请日：1978-06-16
申请人： Fumio Urano , Keisuke Haraguchi , Akihiro Arai
发明人： Fumio Urano , Keisuke Haraguchi , Akihiro Arai
IPC分类号： G03B1/60 , G03B1/66 , G03B9/68 , G03B17/36
CPC分类号： G03B1/66
摘要： A counting device for counting the number of exposures for a given frame of film in a multiple exposure camera is operable by the winding mechanism of the camera after the film winding spools have been disengaged therefrom. A means is provided for enabling the counter while simultaneously disengaging and locking the film spools and both mechanical and electrical exposures counters are disclosed.
摘要翻译：用于对多次曝光相机中的给定胶片帧的曝光次数进行计数的计数装置可以在胶片卷绕卷轴已经脱离之后通过照相机的卷绕机构进行操作。提供了一种用于启用计数器的装置，同时分离和锁定薄膜卷轴，并且公开了机械和电气曝光计数器。

20. 发明授权

US4132472A Replaceable finder system for single-lens reflex camera 失效
标题翻译：用于单镜头反光相机的可更换取景器系统
公开(公告)号：US4132472A
公开(公告)日：1979-01-02
申请号：US806124
申请日：1977-06-13
申请人： Fumio Urano , Akihiro Arai , Takumi Kobayashi , Junji Umetsu
发明人： Fumio Urano , Akihiro Arai , Takumi Kobayashi , Junji Umetsu
IPC分类号： G03B17/20 , G03B19/12
CPC分类号： G03B17/20 , G03B19/12
摘要： An SLR camera having a replaceable penta-prism 6 slidably inserted from the rear face of the camera via mating flange rails 13a on the finder body and recessed grooves 8a in the camera body, a replaceable focal plate or screen 3 removably mounted in a pivotal holding plate 11 accessible through the lens mount 9, and a meter display system extending into the viewing frame of the finder and interposed between the penta-prism and the focal plate. The display system may include a shutter speed scale 15 and an overlying manual speed pointer 16 readable from the lens light, and an inset LED array 17 for indicating the meter reading.
摘要翻译：一种具有可替换的五棱镜6的单反相机，其具有通过取景器本体上的匹配凸缘导轨13a和照相机主体中的凹槽8a可滑动地从照相机的后表面插入的可更换的五棱镜6，可更换的焦平板或屏幕3，可拆卸地安装在枢转保持板11可通过透镜支架9进入，并且仪表显示系统延伸到取景器的观察框架中并插入在五棱镜和焦平板之间。显示系统可以包括从透镜光可读的快门速度刻度器15和上覆手动速度指针16，以及用于指示读数的插图LED阵列17。

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