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公开(公告)号：JP2004070991A
公开(公告)日：2004-03-04
申请号：JP2002225341
申请日：2002-08-01
Inventor： YAMADA MASAHIRO , MIURA TAKAHIRO , WATANABE SATORU
Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium of high recording density in which information signals are reproduced at a high speed and to provide its reproducing device and method. SOLUTION: Light beams A1 to E1 and A2 to E2, which are reflected from five recessed shape pits 11A to 11E, respectively interfere with each other on the surface of photodetectors 31A to 31E in accordance with their wave surfaces and distribution of light intensity is formed on the photodetectors 31A to 31E in accordance with the respective depths of the pits 11A to 11E. Information signals recorded on an optical recording medium 1 is reproduced by reading the distribution of the light intensity as phase information on the photodetectors 31A to 31E. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2002208169A
公开(公告)日：2002-07-26
申请号：JP2001005784
申请日：2001-01-12
Applicant: SONY CORP
Inventor： YAMADA MASAHIRO , OSATO KIYOSHI
IPC: G11B7/135
Abstract: PROBLEM TO BE SOLVED: To provide an electro-optic element suitably adaptable to an optical pickup or the like for the purpose of reducing power consumption and shortening seek time. SOLUTION: An optical switch 3 using a ferroelectric substrate electrooptically switches light beams entering on a plurality of objective lenses that are mounted on an optical pickup and on a plurality of optical heads. Further, a light deflector 9, installed between the optical switch 3 and the objective lens 2, electrooptically changes the direction of a light beam, which is outputted from the optical switch 3 and directed to the objective lens, and performs a tracking operation. Such optical switch 3 and the light deflector 9 carry out these operations in accordance with a periodic polarization reversing structure formed in the ferroelectric substrate and with a voltage applied to the electrode arranged at least on two surfaces of the substrate.
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公开(公告)号：JP2002008260A
公开(公告)日：2002-01-11
申请号：JP2000182041
申请日：2000-06-16
Applicant: SONY CORP
Inventor： YAMADA MASAHIRO , WATANABE SATORU , TANIGUCHI TADASHI , YAMAMOTO KENJI , KANAZAWA TAKAYASU
Abstract: PROBLEM TO BE SOLVED: To provide an optical head where the utilization efficiency of laser beams is improved and also arrangement precision of components can be reduced. SOLUTION: The optical head 50A is provided with a half mirror 24 which reflects the laser beams radiated from an optical fiber 71 propagating the laser beams, an objective lens 2 which condenses the laser beams reflected by the half mirror 24 onto an optical disk 80, and a photodetector 29 to which the laser beams reflected by the optical disk 80 are supplied. The optical disk 80 is irradiated with the laser beams LB from the objective lens 2 and reflects the laser beams LB. The laser beams reflected by the optical disk 80 are supplied to the photodetector 29 by the objective lens 2 via the half mirror 24. A light receiving signal Sp according to the laser beams reflected by the optical disk 80 is generated by the photodetector 29, and the light receiving signal Sp is sent out to a flexible signal conductor 79.
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公开(公告)号：JPH05289135A
公开(公告)日：1993-11-05
申请号：JP9119992
申请日：1992-04-10
Applicant: SONY CORP
Inventor： KOGA YUJI , YAMADA MASAHIRO
Abstract: PURPOSE:To stabilize an optical output of the second harmonic and to enable modulating light intensity of the second harmonic by an electro-optical effect by making a periodic pattern of the first electrode at least same as that of a period polarization reversal structure. CONSTITUTION:The first and the second electrodes 11 and 12 are formed, at least either of them, for instance, the first electrode 11 is arranged so as to coincide with a pattern of a period polarization reversal structure 3. Hereby, an electrooptical effect can be caused in a light waveguide path 2 corresponding to the period polarization reversal structure 3 by applying the prescribed modulating voltage between the first and the second electrodes 11 and 12. Therefore, matching between the polarization reversal period and the fundamental wavelength can not only be possible, but also light intensity modulation can be provided to the second harmonics of its output light by deviating the polarization reversal period from the wavelength of the fundamental wave by the same optical effect.
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公开(公告)号：JPH04131719A
公开(公告)日：1992-05-06
申请号：JP25478690
申请日：1990-09-25
Applicant: SONY CORP
Inventor： KIJIMA KOUICHIROU , YAMADA MASAHIRO
IPC: G01J9/00
Abstract: PURPOSE:To improve wavelength measuring precision and simplify a device by using a Cerenkov radiation type secondary higher harmonic generating element. CONSTITUTION:The light L1 from a light source 3 is entered to the light waveguide pass 2 of a Cerenkov radiation type SHG element 1 through a collimator lens 4 and a condenser lens. Thus, a secondary higher harmonic is generated by the non-linear optical effect of the SHG element 1, and the secondary higher harmonic L2 is emitted with a Cerenkov radiating angle theta from the main surface of a non-linear optical material 11. The incident light or primary light is cut by a filter 7, and only the secondary higher harmonic L2 is passed through it and entered to a position sensor 8 consisting of CCD, whereby the incident position is detected. The Cerenkov radiating angle theta can be detected from this position, and the input wavelength depending on the radiating angle can be precisely measured.
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Patent Agency Ranking
公开(公告)号：JPS63238681A
公开(公告)日：1988-10-04
申请号：JP7199887
申请日：1987-03-26
Applicant: SONY CORP
Inventor： YAMADA MASAHIRO , SHUDO HIROSHI
IPC: G06F17/40
Abstract: PURPOSE:To process data at a high speed by taking data into a FIFO only at the time of discriminating this data to be required data by a data discriminating means and storing the data taken into this FIFO in a memory. CONSTITUTION:Data is taken into FIFOs 11 and 12 only when this data is judged to be required data by a data discriminating means 9, and data taken into FIFOs 11 and 12 is stored in a memory 21. Consequently, it is unnecessary to equalize data processing speeds of a circuit system before data taking-in of FIFOs 11 and 12 and that after data taking-in of FIFOs 11 and 12 because FIFOs 11 an 12 function as buffers where data is temporarily stored, and the data processing is sufficiently performed even if the processing speed of the circuit system before data taking-in of FIFOs 11 and 12 is increased and that of the circuit system after data taking-in of FIFOs 11 and 12 is reduced. Thus, the data processing is performed at a high speed as the whole.
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公开(公告)号：JP2012105058A
公开(公告)日：2012-05-31
申请号：JP2010251750
申请日：2010-11-10
Inventor： YAMADA MASAHIRO , AOKI SUNAO
IPC: H04N13/02
CPC classification number: G02B23/2415 , A61B1/00188 , A61B1/00193 , G02B21/22 , G02B27/2214 , G03B35/08 , G03B35/10 , H04N13/0239
Abstract: PROBLEM TO BE SOLVED: To capture a stereoscopic image with a short baseline length while an image quality and functions are kept.SOLUTION: A stereoscopic imaging device comprises: an objective optical system having a function of forming an image of a subject as a real image or a virtual image; and plural image-formation optical systems which cause plural independent optical systems to form anew images, as a parallax image, of plural subject luminous fluxes emitted from different paths of the objective optical system. Then, the focal distance (f) of the objective optical system and a distance (L) from the rear principal point of the objective optical system and the front principal point of an image-formation optical system are set to be values meeting the following expression. |f/(L-f)|≤1
Abstract translation: 要解决的问题：在保持图像质量和功能的同时捕获具有短基线长度的立体图像。 解决方案：立体成像装置包括：物镜光学系统，其具有将被摄体的图像形成为真实图像或虚拟图像的功能; 以及多个成像光学系统，其使多个独立光学系统形成从物镜光学系统的不同路径发射的多个目标光束的新图像作为视差图像。 然后，将物镜光学系统的焦距（f）和物镜光学系统的后方主点与成像光学系统的前方主点的距离（L）设定为满足以下表达式的值 。 ¾f/（L-f）¾≤1版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2010169976A
公开(公告)日：2010-08-05
申请号：JP2009013671
申请日：2009-01-23
Inventor： YAMADA MASAHIRO , AOKI SUNAO
CPC classification number: G03B35/18 , G02B26/004 , G02B27/2214 , H04N13/0402 , H04N13/0404 , H04N13/0406 , H04N13/0422 , H04N13/045 , H04N13/0486
Abstract: PROBLEM TO BE SOLVED: To provide a spatial image display capable of forming a more natural spatial image despite a simple structure. SOLUTION: In the aerial image display 10, a two-dimensional display image is formed by a display part 2 corresponding to an image signal. Image display light corresponding to a group of pixels 22 on the display part 2 is collectively wave-transformed with a liquid optical element 41 corresponding to the group of pixels 22 and collectively deflected. Thus, in comparison with the case that one liquid optical element 41 is provided for one pixel 22, more different two-dimensional display image lights are respectively and simultaneously projected toward different directions in a horizontal face without enhancing a frame rate of the display part 2. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：尽管结构简单，但是提供能够形成更自然的空间图像的空间图像显示器。 解决方案：在空中图像显示器10中，由对应于图像信号的显示部分2形成二维显示图像。 对应于显示部分2上的一组像素22的图像显示光被共同地与对应于像素组22的液体光学元件41波变换并且共同偏转。 因此，与对于一个像素22设置一个液体光学元件41的情况相比，在不增加显示部分2的帧速率的情况下，在水平面中分别同时向不同方向投影更多不同的二维显示图像光 。版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2009048116A
公开(公告)日：2009-03-05
申请号：JP2007216399
申请日：2007-08-22
Inventor： YAMADA MASAHIRO , AOKI SUNAO
CPC classification number: G02B27/2214
Abstract: PROBLEM TO BE SOLVED: To easily attain a further precise three-dimensional display. SOLUTION: A two-dimensional display part 1 having a plurality of pixels of p colors is combined with a lenticular lens 2 disposed obliquely to the pixel sequence, whereby a plurality of lights corresponding to a plurality of view angles is emitted into a space by plane division at the same time. The relative position between each cylindrical lens 2A and each pixel of the two-dimensional display part 1 is periodically displaced, whereby the emitting direction of display image light from an optional pixel by each cylindrical lens 2A is periodically displaced. An image corresponding to one frame of a three-dimensional image is displayed by time division for each pixel of the two-dimensional display part 1, while the time of time-division display in the two-dimensional display part 1 and the time of displacement of the relative position by the display means are synchronously controlled. According to this, three-dimensional display by a combination of plane division method and time division method can be performed, and the further precise three-dimensional display can be attained. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：为了容易地获得进一步精确的三维显示。 解决方案：具有多个p色像素的二维显示部分1与倾斜于像素序列的双凸透镜2组合，由此将与多个视角对应的多个光发射到 空间由飞机师同时进行。 每个柱面透镜2A和二维显示部分1的每个像素之间的相对位置周期性地移位，由此每个柱面透镜2A的来自可选像素的显示图像光的发射方向周期性地移位。 通过对二维显示部1的各像素进行时分显示对应于三维图像的一帧的图像，同时二维显示部1中的时分显示时间和位移时间 通过显示装置的相对位置的同步控制。 据此，可以进行平面分割法和时分法的组合的三维显示，能够进一步精确地进行三维显示。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008233251A
公开(公告)日：2008-10-02
申请号：JP2007069373
申请日：2007-03-16
Inventor： YAMADA MASAHIRO , AOKI SUNAO
Abstract: PROBLEM TO BE SOLVED: To provide an image display device capable of displaying stereoscopic video with simple and compact constitution, while restraining deterioration in the image quality to be minimum as compared the case of two-dimensional display. SOLUTION: A two-dimensional display unit 1 generates a two-dimensional display image in units of pixels 11, based on the time-division video signal supplied from an video signal processing unit 30. Furthermore, a cylindrical lens array 2 converts projected display image light into parallel luminous flux. Then a piezoelectric element 21 displaces the cylindrical lens array 2 to reciprocate along an X axis according as the time-division video signal is switched, and consequently, the relative position between the two-dimensional display unit 1 and cylindrical lens array 2 is displaced in an X-Y plane. The display image light includes information, regarding a both-eye parallax and a convergence angle and suitable parallel luminous flux of the display image light is projected according to the angle (viewing angle), at which an observer views. Hence, desired stereoscopic image display corresponding to the angle at which the observer views is performed. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供一种能够以简单且紧凑的结构显示立体视频的图像显示装置，同时与二维显示的情况相比，将图像质量的劣化抑制为最小。 解决方案：二维显示单元1基于从视频信号处理单元30提供的时分视频信号，以像素11为单位产生二维显示图像。此外，柱面透镜阵列2转换 投影显示图像光成平行光通量。 然后，按照时分视频信号切换，压电元件21使柱面透镜阵列2沿着X轴移动，由此二维显示单元1和柱面透镜阵列2之间的相对位置在 XY平面。 显示图像光包括关于双眼视差和会聚角度的信息，并且根据观察者观察的角度（视角）来投影显示图像光的合适的平行光束。 因此，对应于观察者观察的角度执行期望的立体图像显示。 版权所有（C）2009，JPO＆INPIT
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