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    • 12. 发明申请
    • Shell main body for muffler
    • 外壳消声器主体
    • US20060042872A1
    • 2006-03-02
    • US11208560
    • 2005-08-23
    • Seiichi NittaTakao ShibataKoichi Takahashi
    • Seiichi NittaTakao ShibataKoichi Takahashi
    • F01N1/02
    • F01N13/18F01N2530/26
    • The shell main body for a muffler includes an inner shell in a cylindrical shape with a cross-section of an imperfect circle defined by small arc portions alternating with large arc portions; and an outer shell wrapping the inner shell and formed in a cylindrical shape similar to the inner shell. An end portion of the inner shell and an end portion of the outer shell are overlapped in a circumstantial direction of the shell main body to form a shell overlap portion that is capable of discharging vapor in a gap of the large arc portions formed between the inner shell and the outer shell into one of an outside and an inside of the shell main body. This shell overlapping portion is located in one of the small arc portions.
    • 用于消音器的外壳主体包括:圆筒形的内壳,具有由大弧形部分交替的小弧形部分限定的不完美圆的横截面; 外壳包裹内壳并形成为类似于内壳的圆柱形形状。 内壳的端部和外壳的端部在壳主体的环境方向上重叠,形成壳重叠部,该外壳重叠部能够在形成在内侧的大的圆弧部的间隙中排出蒸气 外壳和外壳成壳体主体的外部和内部之一。 该壳重叠部分位于小弧形部分之一中。
    • 15. 发明授权
    • Button lock
    • 按钮锁
    • US06298698B1
    • 2001-10-09
    • US09265547
    • 1999-03-09
    • Susumu NakajimaKoichi Takahashi
    • Susumu NakajimaKoichi Takahashi
    • E05B1300
    • E05B37/16E05B3/04E05B63/04Y10T70/5788Y10T70/722Y10T70/7226
    • In a door-mounted button lock a stored condition or a non-stored condition is selected by rotating button bodies inserted in a case frame. A screwdriver notch 56 is slotted in one end of a button body 54 for optionally selecting the stored or non-stored condition; a lock flange 57 holds each button body in a locked condition when depressed; upper and lower fan-shaped stopper flanges 60 and 60′ have different phases in a 180° peripheral direction; a shank 55′ having a square cross section is integrally formed for sliding relative to a slide notch 37 of a key plate 40; and the lever handle can be rotated relative to the rotation shaft 77 via a snap washer 84 to prevent extraction. The stored or non-stored condition can be optionally selected in accordance with the button keyword by rotating the screwdriver notch 180°. The key plate can slide over a wide range of rotation angles of an engagement portion for permitting the key plate to slide to decreased wear. A lever handle 7′ can be fixed with a screw 85′ relative to a rotation shaft 77 for right-handed or left-handed operation.
    • 在门装按钮中,通过旋转插入到壳体框架中的按钮体来选择存储状态或非存储状态。 螺丝刀凹口56在按钮体54的一端开槽,用于可选地选择存储或不存储的状态; 当按压时,锁定凸缘57将每个按钮体保持在锁定状态; 上和下扇形止动器凸缘60和60'在180°圆周方向上具有不同的相位; 一体地形成具有正方形横截面的柄55',用于相对于键板40的滑动凹口37滑动; 并且杠杆手柄可以经由卡扣垫圈84相对于旋转轴77旋转以防止提取。 通过旋转螺丝刀凹口180°可以根据按钮关键字可选地选择存储或未存储的状态。 键盘可以在接合部分的宽范围的旋转角度上滑动,以允许键盘滑动以减少磨损。 杠杆手柄7'可以相对于用于右手或左手操作的旋转轴77用螺钉85'固定。
    • 16. 发明授权
    • Head or face mounted image display apparatus
    • 头部或面部安装的图像显示装置
    • US06195207B1
    • 2001-02-27
    • US09558627
    • 2000-04-26
    • Koichi Takahashi
    • Koichi Takahashi
    • G02B2714
    • G02B17/0816G02B17/086G02B27/017G02B27/0172G02B2027/011G02B2027/0116G02B2027/0132G02B2027/0178
    • The present invention is an optical apparatus, e.g. an image display apparatus, which enables observation of a clear image at a wide field angle with substantially no reduction in the brightness of the observation image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The optical apparatus has an image display device (6), and an ocular optical system (7) for leading an image of the image display device (6) to an observer's eyeball (1). The ocular optical system (7) includes, in order from the image side, a third surface (5) which forms an entrance surface, a first surface (3) which forms both a reflecting surface and an exit surface, and a second surface (4) which forms a reflecting surface. The first to third surfaces (3 to 5) are integrally formed with a medium put therebetween which has a refractive index larger than 1. A bundle of light rays emitted from the image display device (6) enters the ocular optical system (7) while being refracted by the third surface (5) and is internally reflected by the first surface (3) and reflected by the second surface (4). Then, the ray bundle is incident on the first surface (3) again and refracted thereby so as to be projected into the observer's eyeball with the observer's iris position or eyeball rolling center as the exit pupil (1).
    • 本发明是一种光学装置,例如, 一种图像显示装置,其能够以基本上不会降低观察图像的亮度的宽场角观察清晰图像,并且其尺寸和重量轻,因此不太可能导致观察者疲劳 。 光学装置具有图像显示装置(6)和用于将图像显示装置(6)的图像引导到观察者眼球(1)的眼睛光学系统(7)。 眼光系统(7)从图像侧依次包括形成入射面的第三面(5),形成反射面和出射面的第一面(3)和第二面( 4),其形成反射表面。 第一至第三表面(3至5)与其间具有大于1的折射率的介质一体形成。从图像显示装置(6)发射的一束光线进入眼睛光学系统(7),同时 被第三表面(5)折射并由第一表面(3)内部反射并由第二表面(4)反射。 然后,射线束再次入射在第一面(3)上并折射,从而以观察者的虹膜位置或眼球滚动中心作为出射光瞳(1)投影到观察者的眼球。
    • 17. 发明授权
    • Optical system and optical apparatus
    • 光学系统和光学仪器
    • US06018423A
    • 2000-01-25
    • US95723
    • 1998-06-11
    • Koichi Takahashi
    • Koichi Takahashi
    • G02B25/00G02B17/08G02B27/00G02B27/01G02B27/02G02B27/14
    • G02B17/0816G02B17/086G02B27/017G02B27/0172G02B2027/011G02B2027/0116G02B2027/0132G02B2027/0178
    • The present invention is an optical apparatus, e.g. an image display apparatus, which enables observation of a clear image at a wide field angle with substantially no reduction in the brightness of the observation image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The optical apparatus has an image display device (6), and an ocular optical system (7) for leading an image of the image display device (6) to an observer's eyeball (1). The ocular optical system (7) includes, in order from the image side, a third surface (5) which forms an entrance surface, a first surface (3) which forms both a reflecting surface and an exit surface, and a second surface (4) which forms a reflecting surface. The first to third surfaces (3 to 5) are integrally formed with a medium put therebetween which has a refractive index larger than 1. A bundle of light rays emitted from the image display device (6) enters the ocular optical system (7) while being refracted by the third surface (5) and is internally reflected by the first surface (3) and reflected by the second surface (4). Then, the ray bundle is incident on the first surface (3) again and refracted thereby so as to be projected into the observer's eyeball with the observer's iris position or eyeball rolling center as the exit pupil (1).
    • 本发明是一种光学装置,例如, 一种图像显示装置,其能够以基本上不会降低观察图像的亮度的宽场角观察清晰图像,并且其尺寸和重量轻,因此不太可能导致观察者疲劳 。 光学装置具有图像显示装置(6)和用于将图像显示装置(6)的图像引导到观察者眼球(1)的眼睛光学系统(7)。 眼光系统(7)从图像侧依次包括形成入射面的第三面(5),形成反射面和出射面的第一面(3)和第二面( 4),其形成反射表面。 第一至第三表面(3至5)与其间具有大于1的折射率的介质一体形成。从图像显示装置(6)发射的一束光线进入眼睛光学系统(7),同时 被第三表面(5)折射并由第一表面(3)内部反射并由第二表面(4)反射。 然后,射线束再次入射在第一面(3)上并折射,从而以观察者的虹膜位置或眼球滚动中心作为出射光瞳(1)投影到观察者的眼球。
    • 18. 发明授权
    • Visual display apparatus
    • 视觉显示装置
    • US5793339A
    • 1998-08-11
    • US337825
    • 1994-11-08
    • Koichi Takahashi
    • Koichi Takahashi
    • G02B17/08G02B27/00G02B27/01H04N13/00G09G5/00
    • G02B17/0852G02B17/08G02B27/0172H04N13/044G02B2027/011G02B2027/0178H04N13/0436
    • A compact and lightweight visual display apparatus which enables observation of an image that is clear throughout the image field at a field angle of 120.degree. when the user observes with both eyes, and which has a large exit pupil diameter. The visual display apparatus has a two-dimensional image display device (6) for displaying an image for observation, a relay optical system (5) for projecting a real image of the two-dimensional image display device (6) in the air, an ocular magnifier (3) for projecting the real image in the air as an enlarged image and for reflectively bending an optical axis, and a decentered correcting optical system (4) disposed between the relay optical system (5) and the ocular magnifier (3) and having surfaces (41 and 42) decentered with respect to each other. The decentered correcting optical system (4) is arranged such that the vertex (43) of the surface (41) which is closer to the ocular magnifier (3) lies inward of the visual axis (7) after it has been reflected by the ocular magnifier (3), and the ocular magnifier-side surface (41) is an aspherical surface formed from such a curved surface that the refractive power reaches a maximum in the vicinity of the surface vertex (43) and becomes weaker as the distance from the vertex (43) increases toward the outer side. The apparatus may be arranged to correct the diopter by making at least one optical element movable.
    • 一种紧凑且轻便的视觉显示装置,当用户用双眼观察并且具有大的出射光瞳直径时,能够观察在整个图像场中以120度的视场角清晰的图像。 视觉显示装置具有用于显示用于观察的图像的二维图像显示装置(6),用于将二维图像显示装置(6)的真实图像投射到空气中的中继光学系统(5), 用于将空气中的真实图像作为放大图像投射并用于反射弯曲光轴的放大镜(3)和设置在中继光学系统(5)和放大镜(3)之间的偏心校正光学系统(4) 并且具有相对于彼此偏心的表面(41和42)。 偏心校正光学系统(4)被布置成使得靠近眼睛放大镜(3)的表面(41)的顶点(43)在眼睛被反射之后位于视轴(7)的内侧 放大镜(3),眼放大镜侧表面(41)是由这样的曲面形成的非球面,折射力在表面顶点(43)附近达到最大值,并且随着距离 顶点(43)向外侧增加。 该装置可以被布置成通过使至少一个光学元件可移动来校正屈光度。
    • 20. 发明授权
    • Small light weight head-mounted or face-mounted image display apparatus
    • 小重量的头戴式或面装式图像显示装置
    • US5726807A
    • 1998-03-10
    • US570861
    • 1995-12-12
    • Masaya NakaokaKoichi TakahashiTakayoshi Togino
    • Masaya NakaokaKoichi TakahashiTakayoshi Togino
    • G02B17/00G02B17/08G02B25/00G02B27/00G02B27/01G02B27/02H04N5/64G02B27/14
    • G02B27/0172G02B2027/011G02B2027/0132G02B2027/0136G02B2027/0178
    • An image display apparatus, e.g. a head-mounted image display apparatus, which is capable of satisfactorily correcting field curvature and other aberrations in an optical system simultaneously, and which enables even an image of high resolution to be sufficiently clearly observed, without forming an intermediate image. The apparatus has an image display device (6) for displaying an image, and an optical system for projecting an image formed by the image display device (6) without forming an intermediate image and for leading the projected image to an observer's eyeball (1). The optical system includes at least one concave mirror (4) having a rotationally asymmetric reflecting surface which is concave toward the observer's eyeball and decentered with respect to an optical axis, and at least one optical element (9) of positive refractive power which is disposed between the concave mirror (4) and the image display device (6).
    • 图像显示装置,例如 一种头戴式图像显示装置,其能够同时良好地校正光学系统中的场曲率和其它像差,并且能够在不形成中间图像的情况下均匀地观察高分辨率的图像。 该装置具有用于显示图像的图像显示装置(6)和用于投影由图像显示装置(6)形成的图像的光学系统,而不形成中​​间图像并将投影图像引导到观察者的眼球(1) 。 所述光学系统包括至少一个凹面镜(4),所述凹面镜具有旋转非对称的反射表面,所述反射镜表面相对于光轴向观察者的眼球凹入并且偏心;以及至少一个正屈光力的光学元件(9) 在凹面镜(4)和图像显示装置(6)之间。