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    • 34. 发明授权
    • Rotary head drum arrangement
    • 旋转头鼓装置
    • US5424889A
    • 1995-06-13
    • US263006
    • 1994-06-20
    • Shinichi Hasegawa
    • Shinichi Hasegawa
    • G11B5/53G11B5/56G11B5/52
    • G11B5/531
    • A rotary magnetic head drum arrangement comprises a lower fixed drum with an upper rotatable drum mounted thereon. A head base member is mounted in a base portion of the upper rotatable drum such that a flexible head mounting portion of the head base member is positioned across a fulcrum. A pairing adjustment screw is provided at a predetermined adjustment point for exerting pressure on the head mounting portion at a point thereon remote from the fulcrum for changing a position of a magnetic head secured on the head mounting portion. A distance between the fulcrum and the adjustment point is made to be longer than a distance between the fulcrum and the head on the head mounting portion.
    • 旋转磁头鼓装置包括安装在其上的上部可旋转滚筒的下部固定滚筒。 头部基座构件安装在上部可旋转滚筒的基部中,使得头部基座构件的柔性头部安装部分跨越支点定位。 配对调节螺钉设置在预定的调整点处,用于在远离支点的位置处在头部安装部分上施加压力,以改变固定在头部安装部分上的磁头的位置。 将支点与调整点之间的距离设定为长于头部安装部分上的支点与头部之间的距离。
    • 39. 发明授权
    • Projection-type color television receiver wherein the center lines of
right and left projection lenses intersect a display screen at points
which are offset from a point at which the center line of a center
projection lens intersects the display screen
    • 投影型彩色电视接收机,其中左右投影透镜的中心线在与中心投影透镜的中心线与显示屏相交的点偏移的点处与显示屏相交
    • US4730211A
    • 1988-03-08
    • US892855
    • 1986-08-04
    • Shinichi Hasegawa
    • Shinichi Hasegawa
    • H04N9/31H04N17/00H04N9/16
    • H04N9/28H04N9/31H04N9/73
    • A projection-type television receiver comprising right, left and center projection tubes each having a face, the images on the faces of the right and left tubes being formed in registry with the center of each corresponding face for minimizing keystone distortion and maximizing luminance in the receiver, and a transmissive screen for displaying a composite picture of images from the tubes. A lens corresponding to each tube focuses the images from the tube to form a coincident image, and mirrors reflect the coincident image onto the screen for viewing. A particular arrangement of the lenses is described for substantially uniform luminance on the screen and for a substantially symmetrical temperature distribution on the faces of the tubes. It is also preferred that each of the lenses corresponding to the left and right projection tubes have an associated center-line, and that the point of intersection of the center-line of each of the right and left lenses with the transmissive screen be offset by a fixed amount toward each lens from the point of intersection of the center line of the center lens with the transmissive screen. The angle of inclination .alpha.' between each of the right and left lenses and the face of its corresponding projection tube, and the angle of inclination .alpha. between the center-line of each of the right and left lenses and the transmissive screen preferably satisfy the equation:1/m.multidot.tan.alpha.=tan.alpha.'where m is the magnification of each respective lens.
    • 一种投影式电视接收机,包括每个具有一个面的右,左和中心的投影管,左右管的表面上的图像被形成为与每个对应的面的中心对齐,以最小化梯形失真并使亮度最大化 接收器和用于显示来自管的图像的复合图像的透射屏幕。 与每个管相对应的透镜将来自管的图像聚焦以形成一致的图像,并且镜将一致的图像反映到屏幕上用于观看。 描述了透镜的特定布置,用于屏幕上的基本上均匀的亮度以及在管的表面上基本上对称的温度分布。 还优选的是,与左右投影管相对应的每个透镜具有相关联的中心线,并且左右透镜中的每一个中心线与透射屏的交点相互偏离 从中心透镜的中心线与透射屏的交点相对于每个透镜的固定量。 右透镜和左透镜中的每一个与其对应的投影管的每一个之间的倾斜角α'以及左右透镜和透射屏之间的中心线的倾斜角α优选地满足等式 :1 / mxtan alpha =tanα'其中m是每个相应透镜的放大率。