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    • 1. 发明授权
    • Projection screen and projection display
    • 投影屏幕和投影显示
    • US07072109B2
    • 2006-07-04
    • US10496652
    • 2003-06-27
    • Masahiro GotoHitomu WatanabeYoshiki YoshidaHiroshi Sekiguchi
    • Masahiro GotoHitomu WatanabeYoshiki YoshidaHiroshi Sekiguchi
    • G03B21/56G02B3/08
    • G02B5/045G02B3/005G03B21/625
    • A projection screen 111 comprises a total reflection prism lens 114 and a lenticular lens 115 provided on the viewer's side of the total reflection prism lens 114. The total reflection prism lens 114 has a plurality of unit prisms 113 on its back surface (the outermost plane of incidence) on which imaging light L is incident. Each unit prism 113 has an apical angle λ that corresponds to the angle between the plane of incidence 113a and the plane of total reflection 113b, and the apical angles λ of the unit prisms 113 vary with the position of each unit prism 113 on the screen plane. In particular, the unit prisms 113 have apical angles λ varying continuously from 30° to 45° so that the apical angles λ on the side distant from the center O of the concentric circles are greater than the apical angles λ on the side close to this center O.
    • 投影屏幕111包括设置在全反射棱镜透镜114的观察者侧的全反射棱镜透镜114和双凸透镜115。 全反射棱镜透镜114在成像光L入射的背面(最外侧的入射面)上具有多个单位棱镜113。 每个单位棱镜113具有对应于入射平面113a和全反射面113b之间的角度的顶角λ,并且单位棱镜113的顶角λ随每个单位棱镜113的位置而变化 屏幕飞机。 特别地,单位棱镜113具有从30°至45°连续变化的顶角λ,使得在远离同心圆的中心O的一侧上的顶角λ大于靠近该侧的顶侧的顶角λ 中心O.
    • 5. 发明授权
    • Fresnel lens sheet, process of producing Fresnel lens sheet, mold for use in the production process, and rear projection screen comprising the Fresnel lens sheet
    • 菲涅尔透镜片,制造菲涅尔透镜片的方法,用于生产过程的模具和包括菲涅尔透镜片的背投屏幕
    • US06947225B2
    • 2005-09-20
    • US10748671
    • 2003-12-31
    • Hiroshi SekiguchiYoshiki Yoshida
    • Hiroshi SekiguchiYoshiki Yoshida
    • B23B5/36B29C33/38B29C39/02B29L11/00G02B3/08G03B21/62G03B21/625G03B21/56
    • G02B3/08
    • The present invention provides a Fresnel lens sheet that can, in production using a mold, be easily released from the mold and that scarcely produces stray light upon use, and others. Each prism 2 on the incident side of a Fresnel lens sheet 1 is formed to have a nearly triangular cross section and has a plane of refraction 3 that refracts projected light S incident on this plane and a plane of total reflection 4 that totally reflects, toward the viewer's side, at least part of the light refracted at the plane of refraction 3. Each prism 2 is made so that a root 5 between a prism 2 and a prism 3 situated next to the prism 2, on the plane of total reflection side of the prism 2 (a root 5 defined by the plane of refraction 3 of one prism 2B and the plane of total reflection 4 of another prism 2A situated next to the prism 2B, on the side of the plane of refraction 3 of the prism 2B) is curved toward the prism 2A side from the prism 2B side.
    • 本发明提供一种菲涅耳透镜片,其能够在使用模具的生产中容易地从模具中释放并且在使用时几乎不产生杂散光等。 菲涅耳透镜片1的入射侧的每个棱镜2形成为具有近似三角形的横截面,并且具有折射入射在该平面上的投射光S和全反射的全反射面4的折射平面3,朝向 观察者的一侧,至少部分光在折射平面3处折射。 每个棱镜2被制成使棱镜2和棱镜3之间的棱镜5位于棱镜2的全反射面的平面上(根5由一个棱镜的折射面3定义的根部5) 2 B,并且位于棱镜2B的旁边的另一个棱镜2A的全反射面4在棱镜2B的折射面3侧)从棱镜2B向棱镜2A侧弯曲 侧。
    • 6. 发明授权
    • Method and apparatus for forming images capable of reducing color registration errors
    • 用于形成能够降低颜色配准误差的图像的方法和装置
    • US07528851B2
    • 2009-05-05
    • US11327328
    • 2006-01-09
    • Yoshiki Yoshida
    • Yoshiki Yoshida
    • B41J2/385G03G15/01
    • G03G15/0194G03G2215/0119G03G2215/0161
    • An image forming apparatus including a memory device configured to prestore control information and registration pattern data, a traveling member, a toner pattern forming device forming a toner pattern, which includes a plurality of marks of a plurality of color components, on the traveling member according to the registration pattern data. A position detecting device detects each of the plurality of marks in the toner pattern. A control information correcting device corrects the control information according to a difference among positions of the plurality of marks, and a main-scan registration correcting device adjusts, based on the corrected control information, a start-of-write timing in the main scanning direction in a unit of a pixel clock cycle and adjusts a writing timing in the main scanning direction in a unit smaller than the pixel clock cycle by controlling a phase of the pixel clock cycle.
    • 一种图像形成装置,包括存储装置,其被配置为预先存储控制信息和配准图案数据,行进构件,形成调色剂图案的调色剂图案形成装置,其包括多个颜色成分的多个标记, 到注册模式数据。 位置检测装置检测调色剂图案中的多个标记中的每一个。 控制信息校正装置根据多个标记的位置之间的差异来校正控制信息,并且主扫描对准校正装置基于校正的控制信息来调整主扫描方向上的写入开始定时 以像素时钟周期为单位,通过控制像素时钟周期的相位,以小于像素时钟周期的单位来调整主扫描方向上的写入定时。
    • 9. 发明授权
    • Image data storing device for an image forming apparatus
    • 用于图像形成装置的图像数据存储装置
    • US5068676A
    • 1991-11-26
    • US565337
    • 1990-08-10
    • Yoshiki YoshidaKenichirou Asada
    • Yoshiki YoshidaKenichirou Asada
    • B41J2/44G03G15/04G06F3/12G06K15/02H04N1/113H04N1/21
    • G06K15/02G06K2215/008
    • An image data storing device for an image forming apparatus having a plurality of line buffers to which image data are written from external equipment and from which the written image data are read to form an image. Selectors selectively cause the individual buffers into a read state, write state, and inoperative state. An image forming signal generator generates an image forming signal during one frame of image forming period. During an image forming period, the selectors condition each of the line buffers for any one of the above-mentioned three different states while, during a non-image forming period, they hold the line buffers in the individual states. This allows the line buffers to start operating under the same conditions whenever an image forming period is reached.
    • 一种用于图像形成装置的图像数据存储装置,具有多个行缓冲器,图像数据从外部设备写入,并且读取图像数据以形成图像。 选择器选择性地使各个缓冲器进入读取状态,写入状态和不工作状态。 图像形成信号发生器在图像形成周期的一帧期间产生图像形成信号。 在图像形成期间,选择器对上述三种不同状态中的任意一种状态对每个行缓冲器进行调节,而在非图像形成期间,它们将行缓冲器保持在各个状态。 这样,只要达到图像形成周期,线路缓冲器就可以在相同条件下开始运行。