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1. 发明授权

US06660986B2 Information reading and recording apparatus for recording media 失效
公开(公告)号：US06660986B2
公开(公告)日：2003-12-09
申请号：US10026632
申请日：2001-12-27
申请人： Kozo Matsumoto , Atsushi Kitamura , Motoji Egawa
发明人： Kozo Matsumoto , Atsushi Kitamura , Motoji Egawa
IPC分类号： G02B2740
CPC分类号： G11B7/139 , G11B7/123 , G11B7/1374 , G11B2007/0006
摘要： An information reading and recording apparatus in which recording media having respective recording densities different front each other, such as DVD, CD, CD-R/RW and the like, can be compatibly read and recorded only with a low-cost laser diode for low recording density. A laser beam from the laser diode is passed through a collimator lens via a half mirror, and there is provided a reflecting mirror for introducing the laser beam to one of two objective lenses, from which the laser beam is emitted towards the disk. One of the objective lenses is a lens having a high numerical aperture and the other one is a lens having a low numerical aperture. A super-resolution cut-off filter is disposed immediately before the objective lens having a high numerical aperture so that the objective lens and the super-resolution cut-off filter are placed in the optical path on reading DVD. On reading CD, the other lens is placed in the optical path. The laser beam reflected from the disk is received by a photo-detector for converting it into an electrical signal.

2. 发明授权

US06616316B2 Spread illuminating apparatus with frame 失效
公开(公告)号：US06616316B2
公开(公告)日：2003-09-09
申请号：US10206338
申请日：2002-07-29
申请人： Kazutoshi Takayanagi , Motoji Egawa
发明人： Kazutoshi Takayanagi , Motoji Egawa
IPC分类号： F21V800
CPC分类号： G02B6/0088 , G02B6/0028 , G02B6/0038
摘要： A spread illuminating apparatus combined with a liquid crystal display via a frame has a reduced thickness as a whole, thereby realizing a natural liquid crystal display image. A light conductive plate has its peripheral portion fitted in a groove of the frame, and a lamp disposed on a side surface of the light conductive plate is housed in the frame. A top side portion of the liquid crystal display is fitted into a cut-away portion of the frame by a predetermined dimension, and a space between a bottom surface of the light conductive plate and a top surface of the liquid crystal display is reduced, whereby the thickness of the entire apparatus is reduced by a dimension of the liquid crystal display fitted into the frame compared with that of the conventional configuration in which the frame is superimposed on the top surface of the liquid crystal display.

3. 发明授权

US06561661B2 Spread illuminating apparatus with a pair of light sources overlapped in a thickness direction of a transparent substrate 失效
公开(公告)号：US06561661B2
公开(公告)日：2003-05-13
申请号：US09985136
申请日：2001-11-01
申请人： Motoji Egawa
发明人： Motoji Egawa
IPC分类号： G01D1128
CPC分类号： G02B6/0028 , G01D11/28 , G02B6/0038 , G02B6/0046 , G02B6/0068 , Y10S385/901
摘要： There is provided a spread illuminating apparatus realizing both uniform light emission and high brightness. Two bar-like light conductive members made of a transparent material and each having a spot-like light source disposed on a large end thereof are disposed so as to overlap with each other in the thickness direction of a transparent substrate, thereby constituting a pair of bar-like light sources. Light emitted from the spot-like light source and entering one light conductive member of the two is directly guided into the transparent substrate without passing through the other light conductive member. Thus, light rays emitted from the two light conductive members do not interfere with each other so as to prevent generation of interference fringes, resulting in that uniform light emission and high brightness in the spread illuminating apparatus can be realized.

4. 发明授权

US6075681A Magnetic head assembly having symmetrically positioned shield rings 失效
标题翻译：磁头组件具有对称定位的屏蔽环
公开(公告)号：US6075681A
公开(公告)日：2000-06-13
申请号：US855558
申请日：1997-06-04
申请人： Motoji Egawa , Kazutoshi Takayanagi
发明人： Motoji Egawa , Kazutoshi Takayanagi
IPC分类号： G11B5/115 , G11B5/11 , G11B5/265 , G11B5/29 , G11B5/105
CPC分类号： G11B5/11
摘要： A magnetic head assembly 1E is constituted in such a manner as a pair of magnetic head mechanisms 3E, 3E, which are formed by accommodating a magnetic head 5 in a shield ring, respectively, are disposed opposite by opposing the proximal end rail 15a and the distal end rail 15b of one magnetic head mechanism 3E to the distal end rail 15b and the proximal end rail 15a of the other magnetic head mechanism 3E, respectively. A pair of shield rings 6,6 are positioned symmetrically with respect to each other (not in off-set). A spacing L.sub.s of a pair of shield rings is shorter than a spacing L.sub.c between the one shield ring 6 and the other magnetic head core 8. The outer magnetic flux .phi. flows to each other shield ring 6, so that the flux .phi..sub.c which flows to the magnetic head core 8 reduces. Thus, the induced voltage in the coil generated by any outer magnetic field is controlled to reduce noise.
摘要翻译：磁头组件1E以如下方式构成：一对磁头机构3E，3E，它们分别通过将磁头5容纳在屏蔽环中而形成，该磁头机构3E，3E分别与相对的基端轨15a和一个磁头机构3E的远端导轨15b分别连接到远端导轨15b和另一个磁头机构3E的近端导轨15a。一对屏蔽环6,6相对于彼此对称地定位（不处于偏移状态）。一对屏蔽环的间隔Ls比一个屏蔽环6和另一个磁头磁芯8之间的间隔Lc短。外部磁通量phi流向彼此的屏蔽环6，从而流过磁通量phi 磁头芯8减小。因此，由任何外部磁场产生的线圈中的感应电压被控制以减少噪声。

5. 发明授权

US5889642A Magnetic head 失效
标题翻译：磁头
公开(公告)号：US5889642A
公开(公告)日：1999-03-30
申请号：US889887
申请日：1997-07-10
申请人： Motoji Egawa , Kazutoshi Takayanagi
发明人： Motoji Egawa , Kazutoshi Takayanagi
IPC分类号： G11B5/60 , G11B5/105 , G11B5/265
CPC分类号： G11B5/2651 , G11B5/105
摘要： A magnetic head includes a slider including rail portions for sliding on a magnetic medium. One rail portion includes inner side walls which define a rectangular hole, and a head core body having magnetic gaps is sealed in the hole with a sealing agent. Projections are formed on the inner side walls to enable proper core positioning in the hole. Multiple projections can be formed on the respective side walls. The projections can have different heights and also be spaced from the head core body in the hole. The projections can include first projections having a height H.sub.1 and second projections having a height H.sub.2 that satisfy the equation 1.2.times.H.sub.1 .ltoreq.H.sub.2 .ltoreq.5.0 H.sub.1. Also, the relative heights of the first and second projections can be related by the inequality, H.sub.2 -H.sub.1 >C-w, in which C is the spacing between projections on opposed inner side walls, and w is the width of the head core body in a direction between the opposed inner side walls.
摘要翻译：磁头包括滑块，其包括用于在磁介质上滑动的轨道部分。一个轨道部分包括限定矩形孔的内侧壁，并且具有磁隙的磁头芯体用密封剂密封在孔中。在内侧壁上形成突出物以使得孔中能够适当地定位芯。可以在各个侧壁上形成多个突起。突起可以具有不同的高度，并且还与孔中的头部芯体间隔开。突起可以包括具有高度H1的第一突起和具有满足方程式1.2×H 1 H 2 = 5.0H 1的高度H2的第二突起。此外，第一和第二突起的相对高度可以通过不等式H2-H1> Cw相关联，其中C是相对的内侧壁上的突起之间的间隔，w是头部芯体的宽度方向在相对的内侧壁之间。

6. 发明授权

US07758230B2 Spread illuminating apparatus 有权
标题翻译：展示照明装置
公开(公告)号：US07758230B2
公开(公告)日：2010-07-20
申请号：US12153883
申请日：2008-05-27
申请人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
发明人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
IPC分类号： F21V7/04
CPC分类号： G02B6/0088 , G02B6/0021 , G02B6/0055 , G02B6/0091
摘要： A spread illuminating apparatus includes an LED, a transparent resin plate and a light reflecting sheet, wherein the transparent resin plate includes slits adapted to have inserted therein flap portions of the light reflecting sheet, and wherein an adhesive tape with flexibility is placed along at least one flap portion of the light reflecting sheet so as to cover at least one slit of the transparent resin plate, whereby the light reflecting sheet is prevented from warping or undulating in spite of difference in thermal expansion coefficient between the materials of the transparent resin plate and the light reflecting sheet, and also whereby light emitted from the LED and traveling in the transparent resin plate is totally reflected by the flap portions and therefore prevented from leaking from the outer side surfaces of the transparent resin plate.
摘要翻译：扩散照明装置包括LED，透明树脂板和光反射片，其中透明树脂板包括适于插入光反射片的翼片部分的狭缝，并且其中至少具有柔性的胶带所述光反射片的一个折片部分覆盖所述透明树脂板的至少一个狭缝，由此防止透光树脂板的材料与透明树脂板的材料之间的热膨胀系数的差异而导致光反射片翘曲或起伏光反射片，并且由LED发出并在透明树脂板中行进的光被折片部全部反射，因此防止从透明树脂板的外侧表面泄漏。

7. 发明授权

US07726868B2 Spread illuminating apparatus, transparent resin plate for use in spread illuminating apparatus, and method of injection-molding transparent resin plate 有权
标题翻译：扩展照明装置，用于展开照明装置的透明树脂板，以及注塑成型透明树脂板的方法
公开(公告)号：US07726868B2
公开(公告)日：2010-06-01
申请号：US12153882
申请日：2008-05-27
申请人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
发明人： Naoyuki Terada , Motoji Egawa , Akinobu Sano
IPC分类号： F21V7/04
CPC分类号： B29C45/0025 , B29C2045/0027 , B29L2031/747 , G02B6/0021 , G02B6/0055 , G02B6/0065 , G02B6/0088
摘要： A spread illuminating apparatus of side light type includes a transparent resin plate integrally composed of a light conductor plate portion and a housing frame portion, a light reflecting sheet, and a light source, wherein an opening for housing the light source is provided at a side portion of the transparent resin plate, slits are provided along a boundary between the light conductor plate portion and the housing frame portion, and wherein a gate for injecting resin into a molding die cavity for the transparent resin plate is positioned outside the boundary of the light conductor plate portion and the housing frame portion and is positioned also between the opening and one of slits which are provided toward the side portion of the transparent resin plate having the opening and which are located clear of the opening.
摘要翻译：侧光型的扩散照明装置包括由导光板部分和壳体框架部分一体地组成的透明树脂板，光反射片和光源，其中用于容纳光源的开口设置在侧面透明树脂板的一部分，沿着导光板部和壳体框架部之间的边界设置狭缝，并且其中用于将树脂注入到用于透明树脂板的成型模腔中的浇口位于光的边界之外导体板部分和壳体框架部分，并且还位于开口和一个狭缝之间，狭缝被设置成朝向具有开口的透明树脂板的侧部，并且位于离开开口的位置。

8. 发明授权

US06693771B2 Magnetic head with slider including respective cores for high and standard recording densities, and method for producing the same 失效
标题翻译：具有用于高和标准记录密度的相应芯的滑块的磁头及其制造方法
公开(公告)号：US06693771B2
公开(公告)日：2004-02-17
申请号：US09956028
申请日：2001-09-20
申请人： Motoji Egawa , Shigeyuki Ooishi
发明人： Motoji Egawa , Shigeyuki Ooishi
IPC分类号： G11B5105
CPC分类号： G11B5/6005
摘要： A magnetic head exhibits a good traceability without damaging itself or a magnetic disk. The magnetic head includes a slider, and the slider includes a plurality of magnetic cores and an outrigger having a plurality of substantially rectangular slots. The magnetic cores have respective operating gaps for a standard recording density and a high recording density and are inserted into the respective substantially rectangular slots. One magnetic core for a high recording density having a spacer superposed thereon is inserted in one of the slots in such a manner as to touch a wall of the slot. The slider includes a rail surface which has a groove passing longitudinally through the spacer substantially at the center of its thickness and reaching both lengthwise ends of the slider, and the rail surface slides against a magnetic recording medium.
摘要翻译：磁头表现出良好的追溯性，而不会损坏本身或磁盘。磁头包括滑块，滑块包括多个磁芯和具有多个基本矩形槽的外伸支架。磁芯具有用于标准记录密度和高记录密度的各自的操作间隙，并且插入相应的大致矩形槽中。用于具有叠置在其上的间隔物的高记录密度的一个磁芯以与触摸槽的壁的方式插入其中一个槽中。滑块包括轨道表面，该轨道表面具有纵向穿过间隔件大致在其厚度的中心并且到达滑动件的纵向两端的槽，并且轨道表面滑动抵靠磁记录介质。

9. 发明授权

US06578977B2 Spread illuminating apparatus with irregular interval of grooves of light reflection pattern 失效
公开(公告)号：US06578977B2
公开(公告)日：2003-06-17
申请号：US09983608
申请日：2001-10-25
申请人： Motoji Egawa , Shingo Suzuki , Koichi Toyoda
发明人： Motoji Egawa , Shingo Suzuki , Koichi Toyoda
IPC分类号： F21V800
CPC分类号： G02B6/0028 , G02B6/0038 , G02B6/0061 , G02B6/0068
摘要： There is provided a spread illuminating apparatus to suppress the appearance of moiré fringes. A light reflection pattern of a transparent substrate is composed of grooves of substantially triangular in section and flat portions adjacent thereto. The light reflection pattern is formed substantially parallel to the optical axis of a bar-like light source and the depth of the grooves increases gradually in proportion to the increase in distance from the light source. The interval of the adjacent grooves (the groove interval) is set to vary irregularly. Thereby, the relation between the interval of grooves and the interval of mosaic pattern of liquid crystal cells is not definite, and the appearance of moiré pattern can be suppressed. The variation ratio of the groove interval is set to range 25% to 85% of the average groove interval

10. 发明授权

US06297930B1 Magnetic head 失效
标题翻译：磁头
公开(公告)号：US06297930B1
公开(公告)日：2001-10-02
申请号：US09323985
申请日：1999-06-02
申请人： Motoji Egawa , Satoshi Kawashima
发明人： Motoji Egawa , Satoshi Kawashima
IPC分类号： G11B510
CPC分类号： G11B5/2651 , G11B5/10 , G11B5/105
摘要： A cut out 23 is formed at the corner portion 22 which is formed between the second long side 822 and each of the first and second short sides 811 and 812 of the back yoke 5, in which the terminal stands 20d of the bobbins 20 of the read/write coil 6 and the erasing coil 7 are disposed respectively, a shield cover 32 is provided in such a manner as it is coupled with the first, second and third leg portions 10a, 10b and 10c including the wiring 6A of the read/write coil 6 and the wiring 7A of the erasing coil 7 and the front core 3 is bonded to the outer body 8 and the shield cover 32. Thereby, the bridging portion which has been necessary in the conventional example is almost eliminated, as a result, the strength of the front core 3 is increased to prevent it from being broken due to any shocking force. Since the terminal stands 20d of the read/write coil 6 and the erasing coil 7 are accommodated in the cut out 23 and not positioned outside the back yoke 5, to that extent, the apparatus is planned to be miniaturized.
摘要翻译：切口23形成在形成在第二长边822与后轭5的第一短边811和第二短边811中的每一个之间的角部22处，其中，线架20的端子架20d 读取/写入线圈6和擦除线圈7分别设置有屏蔽盖32，其与第一，第二和第三脚部10a，10b和10c耦合，包括读取/写入线圈6的布线6A，写入线圈6和擦除线圈7的布线7A和前芯3被接合到外部主体8和屏蔽罩32.由此，传统示例中所需的桥接部分几乎被消除，结果增加了前芯3的强度，以防止其由于任何冲击力而被破坏。由于读取/写入线圈6的端子架20d和擦除线圈7被容纳在切割部23中并且不位于后部轭铁5的外侧，所以该装置被计划为小型化。

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