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    • 35. 发明授权
    • Photographic optical system
    • 摄影光学系统
    • US06236522B1
    • 2001-05-22
    • US09203271
    • 1998-12-01
    • Seiji Shimizu
    • Seiji Shimizu
    • G02B934
    • G02B9/34G02B15/163
    • A photographic optical system greatly improved in chromatic aberration and capable of providing high image quality with a compact, lightweight and low-cost arrangement having a minimal number of constituent elements. The optical system has a negative lens placed closest to the image side thereof, and a positive lens, a negative lens and a positive lens, which are placed in order from the object side of the optical system on the object side of the negative lens closest to the image side. The negative lens closest to the image side satisfies the following conditions: 75.0≦&ngr;d and 0.8≦SG≦2.2, where &ngr;d and SG are the Abbe's number and lens specific gravity (g/cm3) of the negative lens closest to the image side.
    • 照相光学系统大大改善了色差,并且能够以具有最少数量的组成元件的紧凑,轻便和低成本的布置来提供高图像质量。 光学系统具有最靠近其图像侧的负透镜,以及正透镜,负透镜和正透镜,它们从负离子最近的物体侧的光学系统的物体侧依次放置 到图像侧。 最接近图像侧的负透镜满足以下条件:75.0 <=&ngr; d和0.8 <= SG <= 2.2,其中n和d是SG的阿贝数,负的透镜比重(g / cm3) 镜头最靠近影像侧。
    • 36. 发明授权
    • Photographic lens system
    • 摄影镜头系统
    • US5862000A
    • 1999-01-19
    • US814056
    • 1997-03-10
    • Toshio TakahashiSeiji ShimizuHideyasu Takato
    • Toshio TakahashiSeiji ShimizuHideyasu Takato
    • G02B13/04G02B9/34G02B13/18
    • G02B9/34
    • A photographic lens system which is composed, in order from the object side, of a first lens element having a positive refractive power, a second lens element having a negative refractive power, a third lens element having a positive refractive power, and a fourth lens element which has an aspherical surface on the image side and a negative refractive powers. An aperture stop is disposed between the second lens element and the third lens element or between the third lens element and the fourth lens element. This photographic lens system has a large aperture, favorable optical performance within a photographing range from infinite distance to an extremely short distance, a compact size and a simple composition, and can be manufactured at a low cost.
    • 一种摄影透镜系统,其从物体侧起依次具有正屈光力的第一透镜元件,具有负折光力的第二透镜元件,具有正折光力的第三透镜元件和第四透镜 元件,其在像侧具有非球面,负折射力。 孔径光阑设置在第二透镜元件和第三透镜元件之间或第三透镜元件和第四透镜元件之间。 该摄影透镜系统具有大的孔径,在从无限距离到极短距离的拍摄范围内具有良好的光学性能,紧凑的尺寸和简单的组成,并且可以以低成本制造。
    • 37. 发明授权
    • Zoom lens system having minimal aberration fluctuation at short object
distance
    • 变焦镜头系统在短物距处具有最小的像差波动
    • US5764421A
    • 1998-06-09
    • US155739
    • 1993-11-22
    • Seiji ShimizuTatsuru Kanamori
    • Seiji ShimizuTatsuru Kanamori
    • G02B13/18G02B15/177G02B15/20G02B15/22G02B15/14
    • G02B15/177
    • A zoom lens system having three lens units, that is, a negative lens unit, a positive lens unit, and a negative lens unit. The idea of floating system is introduced into the rear focusing system to minimize the degree of aberration fluctuation at a short object distance with a simple lens arrangement, thereby stabilizing the optical performance during focusing at a short object distance. The zoom lens system includes a 1-st lens unit (G1) having a negative refractive power, a 2-nd lens unit (G2) having a positive refractive power, and a 3-rd lens unit (G3) having a negative refractive power, and effects zooming from the wide end to the tele end by varying the spacing between each pair of adjacent lens units. With the 2-nd lens unit (G2) defined as a focusing lens unit, focusing is effected by varying the axial air spacing between a lens component (L.sub.F) of the 2-nd lens unit (G2) that is the closest to the image side and the remaining lens component (L.sub.F ').
    • 具有三个透镜单元的变焦透镜系统,即负透镜单元,正透镜单元和负透镜单元。 将浮动系统的想法引入到后聚焦系统中,以简单的透镜布置来使物体距离短的像差波动程度最小化,从而在短对象距离聚焦期间稳定光学性能。 变焦透镜系统包括具有负折光力的第一透镜单元(G1),具有正折光力的第二透镜单元(G2)和具有负折光力的三维透镜单元(G3) ,并且通过改变每对相邻透镜单元之间的间距,从宽端到远端的效果变化。 通过将第二透镜单元(G2)定义为聚焦透镜单元,通过改变最靠近图像的第二透镜单元(G2)的透镜部件(LF)之间的轴向空气间隔来实现聚焦 侧和剩余的透镜部件(LF')。
    • 38. 发明授权
    • Apparatus for recording image covered by protective medium
    • 用于记录由保护介质覆盖的图像的装置
    • US5193926A
    • 1993-03-16
    • US619470
    • 1990-11-29
    • Susumu KuzuyaSeiji ShimizuMikio KatoYujiro IshikawaTakashi SakaiEiji Yuki
    • Susumu KuzuyaSeiji ShimizuMikio KatoYujiro IshikawaTakashi SakaiEiji Yuki
    • B41J2/325
    • B41J2/325
    • A recording apparatus including an apparatus body having a front section on the operator's side and a rear section remote from the operator's side, a medium feeding device supported by the apparatus body, for feeding a substantially transparent recording medium along a predetermined feed path defining a boundary between the front and rear sections, such that one of opposite surfaces of the medium faces the operator's side, a recording device disposed in the rear section of the apparatus body, for recording an image on the other surface of the medium, and a control device for controlling the recording device such that the image is laterally reversed as viewed in a first direction from the recording device toward the above-indicated other surface of the medium, with respect to a nominal desired image as viewed in a second direction from the front section toward the one surface of the medium, whereby the laterally reversed image is seen as the nominal desired image when viewed in the second direction.
    • 一种记录装置,包括具有操作者侧的前部和远离操作者侧的后部的装置主体,由装置主体支撑的介质供给装置,用于沿着限定边界的预定进给路径供给基本上透明的记录介质 在所述前部和后部之间,使得所述介质的相对表面中的一个面向操作者侧,设置在所述装置主体的后部中的用于在所述介质的另一表面上记录图像的记录装置,以及控制装置 用于控制所述记录装置,使得当从所述记录装置朝向所述介质的上述另一表面从第一方向观看时,所述图像相对于从所述前部的第二方向观察到的标称所需图像,被横向反转 朝向介质的一个表面,由此当以分光观察时,将横向反转的图像视为标称所需图像 nd方向。
    • 39. 发明授权
    • Device for feeding recording medium in the longitudinal recording
direction
    • 用于沿纵向记录方向进给记录介质的装置
    • US4976558A
    • 1990-12-11
    • US271085
    • 1988-11-14
    • Susumu KuzuyaSeiji ShimizuMikio KatoYujiro IshikawaTakashi SakaiEiji Yuki
    • Susumu KuzuyaSeiji ShimizuMikio KatoYujiro IshikawaTakashi SakaiEiji Yuki
    • B41J11/04B41J15/06
    • B41J15/06B41J11/04
    • A feeding device for feeding a recording medium having a predetermined printing area on one of its opposite surfaces. The printing area extends in a printing direction. The feeding device includes a pair of feed rollers which holds the medium therebetween in rolling contact with the opposite surfaces of the medium. At least one of the pair of feed rollers is driven so as to rotate about an axis perpendicular to the printing direction, to feed the medium in the printing direction. One of the feed rollers which contacts the above-indicated one surface of the medium has an outer circumferential surface which includes a small-diameter portion whose diameter is smaller than that of the other portions. The small-diameter portion is aligned with the printing area in a direction of width of the medium perpendicular to the printing direction, so that the small-diameter portion is prevented from contacting the printed image. The feed rollers may be replaced by a platen roller of a printer. The platen roller is rotated about an axis perpendicular to the printing direction, and cooperates with a print head of the printer to hold and feed the recording medium such that the platen roller and the print head contact the opposite surfaces of the medium. This arrangement also protects the printed image from an adverse influence by a feeding action of the feeding device.
    • 一种用于在其相对表面之一上馈送具有预定打印区域的记录介质的进给装置。 打印区域沿打印方向延伸。 进给装置包括一对进给辊,其将介质保持在与介质的相对表面滚动接触的位置。 一对进给辊中的至少一个被驱动以围绕垂直于打印方向的轴线旋转,以便在打印方向上进给介质。 与介质的上述一个表面接触的进给辊中的一个具有外周面,该外周面包括其直径小于其它部分的直径的小直径部分。 小直径部分沿着与打印方向垂直的介质的宽度方向与打印区域对齐,从而防止小直径部分接触印刷图像。 进给辊可以由打印机的压纸辊代替。 压纸辊围绕垂直于打印方向的轴线旋转,并且与打印机的打印头配合以保持和馈送记录介质,使得压纸辊和打印头与介质的相对表面接触。 这种布置还通过馈送装置的馈送动作保护印刷图像免受不利影响。