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1. 发明专利

JP2007047334A Imaging lens system, image reader, imaging device, and display apparatus 审中-公开
标题翻译：成像镜头系统，图像读取器，成像装置和显示装置
公开(公告)号：JP2007047334A
公开(公告)日：2007-02-22
申请号：JP2005230148
申请日：2005-08-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI
IPC分类号： G02B13/24 , G02B13/22 , H04N1/028
摘要： PROBLEM TO BE SOLVED: To make a front diaphragm compatible with a telecentric lens system on the reducing conjugation side.
SOLUTION: The imaging lens system composed of: (1) a diaphragm r1; (2) a first group having a negative lens L1 whose curvature on the diaphragm r1 side face is great and a positive lens L2 whose curvature on the diaphragm r1 side face is less than that of the negative lens L1; (3) a second group having a positive lens L3; and (4) a third group having a positive lens L4 and a negative lens L5 in that order such that the face on the most reducing conjugation side face is convex with respect to the diaphragm r1, in this order from the magnifying conjugation side.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：使前隔膜与减速共轭侧的远心透镜系统兼容。
解决方案：成像透镜系统包括：（1）膜片r1; （2）第一组，其具有在膜片r1侧面上的曲率大的负透镜L1和在膜片r1侧面上的曲率小于负透镜L1的曲率的正透镜L2; （3）具有正透镜L3的第二组; 和（4）具有正透镜L4和负透镜L5的第三组，使得最大减少共轭侧面上的面相对于膜片r1以从放大共轭侧开始的顺序为凸。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2004109767A Image display device, image forming optical device, and image forming optical system for image display device 审中-公开
标题翻译：图像显示装置，图像形成光学装置和用于图像显示装置的图像形成光学系统
公开(公告)号：JP2004109767A
公开(公告)日：2004-04-08
申请号：JP2002274724
申请日：2002-09-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI
IPC分类号： G02B13/00 , G02B13/08 , G02B13/18 , G02B26/00 , G02B27/18 , G02F1/00 , G02F1/13 , G02F1/1335 , G03B21/00 , G03B21/14 , H04N5/74 , H04N9/31 , H04N17/00
CPC分类号： H04N9/3129 , H04N5/7416 , H04N9/315
摘要： PROBLEM TO BE SOLVED: To provide an image forming optical system suitable for image-forming light from an "optical modulation element for which fine optical modulation parts are one-dimensionally arrayed" on a display surface. SOLUTION: In the image forming optical system 20, the optical modulation element 10 for which the fine optical modulation parts are one-dimensionally arrayed is defined as an object and a luminous flux from the optical modulation element 10 is guided as object light and image-formed one-dimensionally on an image surface 60. Two or more anamorphic surfaces having radius curvatures different in a V direction which is the array direction of the optical modulation part and in an H direction orthogonal to the V direction on an object surface are provided and image forming surfaces in the V direction and in the H direction match with each other. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种适合于在显示表面上从“光学调制部件被精细排列的光调制元件”成像光的图像形成光学系统。解决方案：在成像光学系统20中，将精细光调制部分一维排列的光调制元件10定义为物体，并且来自光调制元件10的光通量被引导为物体光并且在图像表面60上一维成像。在V方向上具有半径曲率的两个或更多个变形表面是光学调制部分的阵列方向和与物体表面上的V方向垂直的H方向并且V方向和H方向上的图像形成表面彼此匹配。版权所有（C）2004，JPO

3. 发明专利

JP2011018055A Optical scanner and image forming apparatus 有权
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2011018055A
公开(公告)日：2011-01-27
申请号：JP2010179714
申请日：2010-08-10
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI YOSHIAKI , SUZUKI SEIZO , KAWAMURA ATSUSHI , ATSUMI HIROMICHI , SAKAI KOJI , ITABASHI AKIHISA
IPC分类号： G02B26/10 , B41J2/44 , G02B13/00 , G02B13/18 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner that can reduce changes of beam diameter due to temperature change and pitch deflection of a sub-scanning beam pitch of multiple beams.SOLUTION: The optical scanner includes: a first optical system 21 having a coupling lens 2, that couples a light flux from a light source 1; a second optical system 22, that includes a lens 3 having a positive power in a sub scanning direction and forms the light flux into a line image extending in the main scanning direction on a deflector 4; and a third optical system 23, that condenses the light flux deflected by a deflector 4 as an optical beam spot on a surface to be scanned 9a and includes a first scanning lens 5 having positive power in the main scanning direction and a second scanning lens 6, having positive power in the sub scanning direction. The lateral magnification |βm| in the main scanning direction of the whole optical system is set larger than the lateral magnification |βs| in the sub-scanning direction. Ribs 20A and 20B satisfy the relation "the temperature T1 in the vicinity of the first scanning lens 5> the temperature T2 in the vicinity of the second scanning lens 6".
摘要翻译：要解决的问题：提供一种能够减少由于多个光束的副扫描光束间距的温度变化和音调偏转引起的光束直径变化的光学扫描器。解决方案：光学扫描器包括：第一光学系统21，具有耦合透镜2，其耦合来自光源1的光通量; 第二光学系统22，其包括在副扫描方向上具有正功率的透镜3，并将光束形成在偏转器4上沿主扫描方向延伸的线图像; 以及第三光学系统23，其将由偏转器4偏转的光束作为光束斑聚焦在待扫描的表面9a上，并且包括在主扫描方向上具有正电力的第一扫描透镜5和第二扫描透镜6 在副扫描方向上具有正的功率。横向放大|βm| 在整个光学系统的主扫描方向上设定为大于横向倍率|βs| 在副扫描方向。肋20A和20B满足“第一扫描透镜5附近的温度T1”，第二扫描透镜6“附近的温度T2”的关系。

4. 发明专利

JP2007058163A Light source apparatus, optical modulation apparatus, display apparatus, light condensing lighting system and projection type color display apparatus 审中-公开
标题翻译：光源装置，光学调制装置，显示装置，光聚焦照明系统和投影类型彩色显示装置
公开(公告)号：JP2007058163A
公开(公告)日：2007-03-08
申请号：JP2006027132
申请日：2006-02-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI , TATSUNO HIBIKI
IPC分类号： G03B21/14 , G02F1/13 , G02F1/13357 , G03B21/00
CPC分类号： G02B19/0066 , G02B19/0014 , G02B19/009
摘要： PROBLEM TO BE SOLVED: To provide a light source apparatus, an optical modulation apparatus, a display apparatus, a light condensing lighting system and a projection type color display apparatus, capable of effectively condensing and illuminating light irradiated from a light source relative to a predetermined range with smaller irregularity, as well as attaining miniaturization and a thinner size. SOLUTION: The light source apparatus comprises: an array light source 11 in which a plurality of emission light sources is arranged; a divergence characteristic control means 12 disposed corresponding to the array light source and configured to control a divergence characteristic of each of the emission light sources of the array light source; and a focusing optical element 141 configured to control a directivity of light emitted from each of the emission light sources of the array light source, wherein the array light source 11, the divergence characteristic control means 12, and the focusing optical element are arranged in this order in a direction of light emission from the array light source, and wherein following formula is satisfied: 0.067 COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供能够有效地冷凝和照射从光源相对照射的光的光源装置，光调制装置，显示装置，聚光照明系统和投影型彩色显示装置到达具有较小不规则性的预定范围，以及实现小型化和更薄的尺寸。解决方案：光源装置包括：阵列光源11，其中布置有多个发射光源; 一个发散特性控制装置12，其对应于该阵列光源设置并被配置成控制阵列光源的每个发射光源的发散特性; 以及配置为控制从阵列光源的每个发射光源发射的光的方向性的聚焦光学元件141，其中阵列光源11，发散特性控制装置12和聚焦光学元件布置在该并且其中满足以下公式：0.067 <= 1 / f <1.1其中阵列光源的有效对角线长度为l，聚焦光学元件的焦距为 F。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007047335A Illuminator, optical modulation device and projection type display device 审中-公开
标题翻译：照明器，光学调制装置和投影型显示装置
公开(公告)号：JP2007047335A
公开(公告)日：2007-02-22
申请号：JP2005230149
申请日：2005-08-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI , TATSUNO HIBIKI
IPC分类号： G03B21/00 , G02B19/00 , G02B27/09 , H01L33/02 , H01L33/58 , H04N9/31
摘要： PROBLEM TO BE SOLVED: To provide an illuminator which is miniaturized and thinned, and an optical modulation device and a projection type display device which are equipped with the illuminator. SOLUTION: The illuminator is equipped with: a light emitting element array 1 having non-uniform light distribution characteristic; a coupling lens 2 arranged corresponding to each of the respective light emitting elements of the light emitting element array 1; a first lens array 3; a second lens array 4; and a surface to be illuminated 5. An optical device 6 for reducing uneven light quantity distribution of the surface to be illuminated 5 caused by the light distribution characteristic of the light emitting element is arranged between the coupling lens 2 and the first lens array 3 or near the coupling lens 2 and the first lens array 3. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种小型化和薄型化的照明装置，以及配备有照明装置的光调制装置和投影型显示装置。
解决方案：照明器配备有：具有不均匀的光分布特性的发光元件阵列1; 对应于发光元件阵列1的各个发光元件布置的耦合透镜2; 第一透镜阵列3; 第二透镜阵列4; 以及要被照明的表面5.用于减少由发光元件的光分布特性引起的被照射表面5的不均匀光量分布的光学装置6布置在耦合透镜2和第一透镜阵列3之间，或靠近耦合透镜2和第一透镜阵列3.版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2004109782A Optical scanning device and image forming apparatus 审中-公开
公开(公告)号：JP2004109782A
公开(公告)日：2004-04-08
申请号：JP2002274912
申请日：2002-09-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IZUMI YASUTAKA , KAWAMURA ATSUSHI
IPC分类号： G02B26/10 , G02B26/12 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanning device for improving optical characteristics, obtaining the images of prescribed quality even when the tolerance of the deflection reflection surface accuracy dispersion of a polygon mirror is loosened and suppressing the manufacture cost of the polygon mirror by adjusting a beam waist position by a variable focus optical element for each deflection reflection surface of the polygon mirror, and to provide an image forming apparatus using the optical scanning device. SOLUTION: The optical scanning device is provided with a light source 41 for emitting a luminous flux, the polygon mirror 32 for deflecting the luminous flux from the light source 41, and scanning optical systems 33 and 34 for converting the deflected luminous flux on a surface to be scanned. The device is provided with a sensor 37 for detecting the surface of the polygon mirror 32 and the variable focus optical element 42 arranged between the light source 41 and the polygon mirror 32 and operated corresponding to the surface information of the polygon mirror 32 detected by the sensor 37. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2005092015A Line picture scanning type picture display device and method of correcting distortion of displayed picture 有权
标题翻译：线图像扫描类型图像显示装置和校正显示图像的失真的方法
公开(公告)号：JP2005092015A
公开(公告)日：2005-04-07
申请号：JP2003327751
申请日：2003-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI
IPC分类号： G02B26/08 , G02B13/00 , G02B13/18 , G02B13/22 , G02B26/10 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To simplify and miniaturize a scanning optical system in a line picture scanning type picture display device and to display an appropriate two-dimensional picture on a picture display. SOLUTION: The line picture scanning type picture display device uses the array of optical modulation elements in an optical modulation means 10 and 20 having a lot of fine optical modulation elements arranged in one dimension as an object, forms a one-dimensional line picture in a predetermined V-direction by transmitting luminous fluxes emitted from respective optical modulation elements as object light with an imaging optical system 30, deflects and scans the luminous flux emitted from the imaging optical system 30 in H-direction perpendicular to the V-direction with a deflection means 40, corrects mainly the curvature of the picture of the deflected luminous flux with the scanning optical system 50, and flattens the picture plane of the displayed picture, the scanning optical system 50 has small refractive power which is enough to correct mainly the curvature of the picture, is composed of N (1≤N≤2) lenses arranged near the deflection means, and has control means 72 and 74 of number of used optical modulation elements, which vary and control the number of optical modulation elements A used in the optical modulation means according to the position of the displayed picture in H-direction. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了简化和小型化在线图像扫描型图像显示装置中的扫描光学系统并且在图像显示器上显示适当的二维图像。线图像扫描型图像显示装置使用具有以一维布置的大量精细光调制元件作为对象的光调制装置10和20中的光调制元件阵列，形成一维线通过用成像光学系统30发射从各个光调制元件发射的光束作为对象光，在预定的V方向上的图像偏转并扫描从成像光学系统30发射的光束在垂直于V方向的H方向上利用偏转装置40，用扫描光学系统50主要校正偏转的光束的图像的曲率，并使所显示的图像的图像平坦化，扫描光学系统50具有小的折射力，其足以主要校正图像的曲率由设置在偏转装置附近的N（1≤N≤2）个透镜构成，并且具有控制装置72和74 使用的光调制元件的数量，其根据所显示的图像在H方向上的位置来改变和控制在光调制装置中使用的光调制元件A的数量。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003005111A Optical scanner and image forming device 审中-公开
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2003005111A
公开(公告)日：2003-01-08
申请号：JP2001183752
申请日：2001-06-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI , SUZUKI SEIZO , ATSUMI HIROMICHI
IPC分类号： B41J2/44 , G02B1/00 , G02B1/04 , G02B13/00 , G02B26/10 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner by which characteristics fluctuation caused by temperature fluctuation is reduced by positively using the wavelength fluctuation of an LD light source due to the temperature fluctuation and also to provide an image forming device which is provided with the optical scanner and with which the characteristics fluctuation caused by the temperature fluctuation is reduced and an excellent image quality is obtained by preventing the increase of a light spot diameter on an image surface.
SOLUTION: A second optical system possesses a resin lens 3 of negative power. When the dispersive power ν
concave of the d-line of the resin lens 3 and temperature dispersive power τ
concave satisfy the expressions of ν
concave ≤40 and τ
concave ≤250, respectively and when the focal distances of the resin lens 3 at two levels of temperature T1 and T2 are f1 and f2, the expression of (f2-f2)/f1=-1/τ
concave (T2-T1=30) is satisfied. A third optical system possesses a resin lens, and the characteristics fluctuation caused by the temperature fluctuation is reduced by the wavelength fluctuation of a laser light source 1 due to the temperature fluctuation and the temperature change of the first optical system, the second optical system and their supporting members.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种通过积极地利用由于温度波动引起的LD光源的波长波动来降低由温度波动引起的特性波动的光学扫描仪，并且还提供一种图像形成装置，其设置有光学扫描仪，通过防止图像表面上的光点直径的增加，降低由温度波动引起的特性波动并且获得优异的图像质量。解决方案：第二光学系统具有负功率的树脂透镜3。当树脂透镜3的d线的色散功率vccave和温度色散函数τconcave分别满足νconcave<= 40和τconcave<= 250的表达式，并且当树脂透镜3的两个温度水平的焦距 T1和T2是f1和f2，满足（f2-f2）/ f1 = -1 /τconcave（T2-T1 = 30）的表达式。第三光学系统具有树脂透镜，并且由于温度波动和第一光学系统，第二光学系统和第二光学系统的温度变化引起的由温度波动引起的特性波动被激光光源1的波长波动减小他们的支持成员。

9. 发明专利

JP2007193349A Optical scanner and image formation apparatus 有权
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2007193349A
公开(公告)日：2007-08-02
申请号：JP2007038238
申请日：2007-02-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HAYASHI YOSHIAKI , SUZUKI SEIZO , KAWAMURA ATSUSHI , ATSUMI HIROMICHI , SAKAI KOJI , ITABASHI AKIHISA
IPC分类号： G02B26/10 , B41J2/44 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner that can reduce changes of beam diameter due to a temperature change and a pitch deflection of a vertical scanning beam pitch of multi-beam. SOLUTION: The optical scanner includes: a first optical system 21 having a coupling lens 2 which couples a light flux from a light source 1; a second optical system 22 which is formed of a lens 3 having a positive power in a vertical scanning direction and forms the light flux into a line image extending in the horizontal scanning direction on a deflector 4; and a third optical system 23 which condenses the light flux deflected with the deflector 4 on a surface to be scanned 9a as an optical beam spot and includes a first scanning lens 5 having a positive power in the horizontal scanning direction, and a second scanning lens 6 having a positive power in the vertical scanning direction. Lateral magnification ¾βm¾ in the horizontal scanning direction of the whole optical system is set larger than the lateral magnification ¾βs¾ in the vertical scanning direction. Ribs 20A and 20B satisfies the condition of: "temperature T1 near the first scanning lens 5" > "temperature T2 near the second scanning lens 6". COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够减少由于多光束的垂直扫描光束间距的温度变化和音调偏转引起的光束直径变化的光学扫描器。光学扫描器包括：具有耦合来自光源1的光通量的耦合透镜2的第一光学系统21; 第二光学系统22，其由在垂直扫描方向上具有正功率的透镜3形成，并将光束形成为在偏转器4上沿水平扫描方向延伸的行图像; 以及第三光学系统23，其将偏转器4偏转的光束在待扫描的表面9a上会聚为光束点，并且包括在水平扫描方向上具有正的功率的第一扫描透镜5和第二扫描透镜 6在垂直扫描方向上具有正的功率。在整个光学系统的水平扫描方向上的横向放大倍率¾βm¾被设定为大于垂直扫描方向上的横向放大率¾βs¾。肋20A和20B满足“第一扫描透镜5附近的温度T1”>“靠近第二扫描透镜6的温度T2”的条件。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2004361651A Telecentric lens system and scanning optical system/image display device and image photographing device 审中-公开
公开(公告)号：JP2004361651A
公开(公告)日：2004-12-24
申请号：JP2003159782
申请日：2003-06-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAMURA ATSUSHI
IPC分类号： G02B26/08 , G02B13/18 , G02B13/22 , G02B26/10 , G02B27/18
CPC分类号： G02B13/22
摘要： PROBLEM TO BE SOLVED: To realize a telecentric lens system suitable for an image display device and an image photographing device using a line type device.
SOLUTION: The lens system focuses the image of an object having a long slit form in one direction with variable power, the pupil is set at the enlarging side of the whole system, a front group and a rear group are arranged from the enlarging side to the contracting side, the front group is composed of three or more lenses including at least one concave lens and has positive refractive power, the rear group is composed of one or two positive lenses and has positive refractive power, and the focal length of the whole system: f, FNO. of the whole system: F, the focal length of the front group: ff, the distance on the optical axis from the pupil to the lens face on the mostly enlarging side: d0 satisfy the conditions: (1) 2 0.8.
COPYRIGHT: (C)2005,JPO&NCIPI

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