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    • 23. 发明申请
    • PAPER FEEDING APPARATUS, IMAGE FORMING APPARATUS AND PAPER FEEDING METHOD
    • 纸张送料装置,图像形成装置和纸张送料方法
    • US20110133391A1
    • 2011-06-09
    • US12960136
    • 2010-12-03
    • Koichi Akiyama
    • Koichi Akiyama
    • B65H7/20B65H7/02B65H1/22
    • B65H1/14B65H3/0684B65H7/04B65H2220/09B65H2511/212B65H2511/514B65H2513/40B65H2513/41B65H2553/412B65H2553/612B65H2220/03B65H2220/01B65H2220/02B65H2220/11
    • A paper feeding apparatus which can certainly detect the position of a pickup roller, and an image forming apparatus including the paper feeding apparatus are provided. The paper feeding apparatus feeds a sheet stacked on a paper feed cassette by the pickup roller, and includes a sensor and the pickup roller rotatably supported by a support shaft and including a detection object part in which a first detection object part having a first length in a movement direction of movement around the support shaft and detected as a first detection state by the sensor, a second detection object part having a second length different from the first length in the movement direction and detected as the first detection state by the sensor, and a third detection object part formed between the first detection object part and the second detection object part and detected as a second detection state different from the first detection state by the sensor are arranged in the movement direction.
    • 提供了能够可靠地检测拾取辊的位置的送纸装置和包括送纸装置的图像形成装置。 供纸装置通过拾取辊供给堆叠在供纸盒上的纸张,并且包括传感器和由支撑轴可旋转地支撑的拾取辊,并且包括检测对象部分,其中具有第一长度的第一检测对象部分 移动方向围绕支撑轴移动并被传感器检测为第一检测状态;第二检测对象部分,具有与移动方向上的第一长度不同的第二长度,并被传感器检测为第一检测状态;以及 形成在第一检测对象部分和第二检测对象部分之间并被检测为与传感器的第一检测状态不同的第二检测状态的第三检测对象部分沿移动方向排列。
    • 24. 发明授权
    • Projector and method for manufacturing projector
    • 投影机及投影机制造方法
    • US07819534B2
    • 2010-10-26
    • US11462881
    • 2006-08-07
    • Koichi Akiyama
    • Koichi Akiyama
    • G03B3/00
    • G03B21/208G03B21/20H04N9/3105H04N9/3152
    • A projector includes: a light source that emits an illumination flux; a first lens array having plural first small lenses that split the illumination flux from the light source into plural partial luminous fluxes; a second lens array having plural second small lenses corresponding to the plural first small lenses; a superimposing lens that superimposes each partial luminous flux from the second lens array onto an illuminated area; an electro-optic modulator that modulates the light superimposed by the superimposing lens in accordance with image information; and a projection system that projects the light modulated by the electro-optic modulator; wherein the projector further has an optical lens arranged in an optical path between the superimposing lens and the electro-optic modulator, and the optical lens, together with the superimposing lens, forms a superimposing system that has a different focal length from the focal length of the superimposing lens and that has substantially the same focal position as the focal position of the superimposing lens.
    • 投影仪包括:发射照明光束的光源; 具有多个第一小透镜的第一透镜阵列,其将来自光源的照明光束分成多个部分光束; 具有对应于所述多个第一小透镜的多个第二小透镜的第二透镜阵列; 将来自第二透镜阵列的每个部分光束叠加到照明区域上的叠加透镜; 电光调制器,其根据图像信息调制由所述重叠透镜叠加的光; 以及投射由电光调制器调制的光的投影系统; 其中所述投影仪还具有布置在所述重叠透镜和所述电光调制器之间的光路中的光学透镜,并且所述光学透镜与所述重叠透镜一起形成叠加系统,所述叠加系统具有与所述重叠透镜 重叠透镜并且具有与重叠透镜的焦点位置基本相同的焦点位置。
    • 25. 发明授权
    • Projector
    • 投影机
    • US07252410B2
    • 2007-08-07
    • US11231945
    • 2005-09-22
    • Koichi Akiyama
    • Koichi Akiyama
    • F21V7/00
    • G02B27/0994F21V7/0025G02B26/008G03B21/008G03B21/2066H04N9/3117
    • A projector includes an illumination system including a light source having an ellipsoidal reflector and an arc tube having a luminescence center in the vicinity of a first focus of the ellipsoidal reflector, and an integrator rod having a light incidence plane in the vicinity of a second focus of the ellipsoidal reflector and converting light from the light source to light having a more even intensity distribution; a relay optical system that guides the light from the illumination system to a region being illuminated; a micromirror modulator that modulates the light from the relay optical system in accordance with image information; and a projection optical system that projects the light modulated by the micromirror modulator. The arc tube includes an auxiliary mirror that reflects the light radiated from the arc tube toward the region being illuminated into a direction of the ellipsoidal reflector.
    • 投影机包括照明系统,该照明系统包括具有椭圆反射器的光源和在椭圆反射体的第一焦点附近具有发光中心的发光管,以及在第二焦点附近具有光入射面的积分器杆 并将来自光源的光转换成具有更均匀强度分布的光; 中继光学系统,其将来自照明系统的光引导到被照亮的区域; 微镜调制器,其根据图像信息调制来自中继光学系统的光; 以及投影光学系统,其投射由微镜调制器调制的光。 电弧管包括辅助反射镜,其将从电弧管辐射的光朝向被照射到椭圆反射体的方向的区域反射。
    • 26. 发明授权
    • Illumination device and projector
    • 照明装置和投影机
    • US07245436B2
    • 2007-07-17
    • US11329132
    • 2006-01-11
    • Koichi Akiyama
    • Koichi Akiyama
    • G02B27/10
    • G02B3/0068G03B21/208H04N9/3152
    • An illumination device includes a light source, a first lens array having a plurality of first small lenses, a second lens array having a plurality of second small lenses corresponding to the plurality of first small lenses, and a superimposing lens. The plurality of first small lenses is made eccentric in a certain direction while the plurality of second small lenses is made eccentric in one of the certain direction and a direction orthogonal to the certain direction. The first and second lens arrays are integrally formed into one light-transmissive member.
    • 照明装置包括光源,具有多个第一小透镜的第一透镜阵列,具有对应于多个第一小透镜的多个第二小透镜的第二透镜阵列和叠加透镜。 多个第一小透镜在一定方向上偏心,同时多个第二小透镜在一定方向中的一个方向和与该特定方向正交的方向上偏心。 第一透镜阵列和第二透镜阵列一体地形成为一个透光构件。
    • 27. 发明授权
    • Projector with electrooptical modulator
    • 投影机电光调制器
    • US07213927B2
    • 2007-05-08
    • US11072949
    • 2005-03-07
    • Koichi Akiyama
    • Koichi Akiyama
    • G03B21/14G03B21/20G02B9/00
    • H04N9/3117G03B21/2053G03B33/12
    • Exemplary embodiments provide a projector having a structure capable of easy miniaturization and capable of achieving a smooth moving picture display of good quality. A projector including: an illuminating apparatus; a color separating optical system; liquid crystal display devices; and a projecting optical system, the projector further including: a shielding member provided in the vicinity of a light emitting surface of a first lens array and in which a light transmitting area and a light non-transmitting area are alternately arranged in an optical path in a first direction vertical to an optical axis of illumination; and a rotating prism, which is provided between a superimposing lens and the color separating optical system, for scanning an illuminating light bundle in image forming areas of the liquid crystal display devices synchronously with screen writing frequencies of the liquid crystal display devices.
    • 示例性实施例提供具有能够容易地小型化并且能够实现良好质量的平滑运动图像显示的结构的投影仪。 一种投影仪,包括:照明装置; 分色光学系统; 液晶显示装置; 以及投影光学系统,所述投影仪还包括:屏蔽部件,设置在所述第一透镜阵列的发光面附近,并且在所述第一透镜阵列的光路中交替地配置有透光区域和光不透射区域 垂直于照明光轴的第一方向; 以及旋转棱镜,其设置在重叠透镜和分色光学系统之间,用于与液晶显示装置的屏幕写入频率同步地扫描液晶显示装置的图像形成区域中的照明光束。
    • 28. 发明授权
    • Projector with anamorphic optical system
    • 具有变形光学系统的投影机
    • US07185991B2
    • 2007-03-06
    • US11002438
    • 2004-12-03
    • Koichi Akiyama
    • Koichi Akiyama
    • G03B21/20G03B21/26
    • G03B21/14G03B21/208
    • A projector capable of obtaining a smooth motion picture display of high quality without significantly reducing the utilization efficiency of light includes a light source device, a first lens array, a second lens array, a superimposing lens, a liquid crystal display device, and a projective optical system. The superimposing lens includes an anamorphic optical system to shape illumination luminous fluxes from the second lens array into illumination luminous fluxes having a cross-sectional shape that illuminates all the image formation regions of the liquid crystal display device in one direction along an X-axis direction, and a part of the image formation regions in the other direction along a Y-axis direction. The projector further includes a scanning device to scan the illumination luminous fluxes shaped by the superimposing lens in synchronism with a field frequency of the liquid crystal display device along the other direction on the image formation region.
    • 能够在不显着降低光的利用效率的情况下获得高质量的平滑电影显示的投影仪包括光源装置,第一透镜阵列,第二透镜阵列,叠加透镜,液晶显示装置和投影 光学系统。 叠加透镜包括变形光学系统,用于将来自第二透镜阵列的照明光束成形为具有沿着X轴方向在一个方向上照亮液晶显示装置的所有图像形成区域的截面形状的照明光束 以及沿着Y轴方向在另一个方向上的图像形成区域的一部分。 投影仪还包括扫描装置,用于与图像形成区域上的另一方向的液晶显示装置的场频同步地扫描由重叠透镜形成的照明光束。
    • 29. 发明授权
    • Lighting device and projector equipped with the same
    • 照明设备和投影机配备相同
    • US07150535B2
    • 2006-12-19
    • US10957673
    • 2004-10-05
    • Koichi Akiyama
    • Koichi Akiyama
    • G03B21/14G03B21/20
    • H04N9/315G03B21/2026G03B21/208
    • A lighting includes: a light source device; a concave lens having a light-incident surface formed from a hyperboloid of revolution to make the luminous flux from the light source device almost parallel; a first lens array; and a second lens array, with a concave surface is present between the light-incident surface of the concave lens and the first lens array, and the concave surface causes, together with the light-incident surface of the concave lens, the luminous flux to travel along an optical path heading to an outer side rather than an optical path parallel to an optical axis of the light source device, while causing the luminous flux to pass through the small lenses that correspond to each other in the first lens array and the second lens array.
    • 照明包括:光源装置; 具有由旋转双曲面形成的光入射面的凹透镜,使来自光源装置的光通量几乎平行; 第一透镜阵列; 并且具有凹面的第二透镜阵列存在于凹透镜的光入射表面和第一透镜阵列之间,并且凹面与凹透镜的光入射表面一起导致光通量 沿着光路行进到外侧而不是平行于光源装置的光轴的光路,同时使光通量通过第一透镜阵列中彼此对应的小透镜,第二透镜阵列 镜头阵列
    • 30. 发明授权
    • Illumination unit and projector including the same
    • 照明单元和投影机包括相同
    • US07052139B2
    • 2006-05-30
    • US10913480
    • 2004-08-09
    • Koichi Akiyama
    • Koichi Akiyama
    • G03B21/14G03B21/28G03B21/20G02B3/00F21S6/00
    • G03B21/208G03B21/20G03B21/2026
    • An illumination unit of the present invention includes: an ellipsoidal reflector having a first focus and a second focus; an arc tube; a collimating lens; a first lens array 120 having a plurality of small lenses 122 for splitting the illumination luminous flux from the collimating lens into a plurality of partial luminous fluxes; a second lens array having a plurality of small lenses corresponding to the plurality of the small lenses 122 of the first lens array 120; and a superimposing lens for superimposing respective partial luminous fluxes from the second lens array at the illuminated area, characterized in that the light incident surface of the first lens array 120 is situated at the position which is closer to the ellipsoidal reflector than the second focus, and which is such that the light quantity of the illumination luminous flux from the collimating lens is distributed throughout over the light incident surface.This enables the achievement of the simplification of manufacturing processing and the reduction of the manufacturing cost of the first lens array without reducing the inplane light intensity distribution characteristics on the image formation area of the electrooptic modulation unit which is the illuminated area.
    • 本发明的照明单元包括:具有第一焦点和第二焦点的椭圆反射体; 电弧管; 准直透镜; 具有多个小透镜122的第一透镜阵列120,用于将来自准直透镜的照明光束分成多个部分光束; 具有与第一透镜阵列120的多个小透镜122对应的多个小透镜的第二透镜阵列; 以及重叠透镜,用于将来自第二透镜阵列的各个部分光束叠加在照明区域,其特征在于,第一透镜阵列120的光入射表面位于比第二焦点更靠近椭圆面反射镜的位置处, 使得来自准直透镜的照明光束的光量分布在整个光入射面上。 这使得能够实现简化制造处理和降低第一透镜阵列的制造成本,而不会降低作为照明区域的电光调制单元的图像形成区域上的面内光强度分布特性。