公开(公告)号：US5805939A

公开(公告)日：1998-09-08

申请号：US464941

申请日：1995-06-05

申请人： Toshihiro Hamamura ,  Akira Shiraishi ,  Takeshi Yamawaki ,  Hiroyuki Okada

发明人： Toshihiro Hamamura ,  Akira Shiraishi ,  Takeshi Yamawaki ,  Hiroyuki Okada

IPC分类号： G02B7/32 ,  G03B13/36

CPC分类号： G02B7/32

摘要： A camera has a variable focal length lens and a viewfinder system whose magnification is variable in accordance with the focal length of the lens. A line array sensor generates an electrical signal in accordance with the intensity of the received light. A distance measuring optical system, which transmits light from a photographic object to the sensing elements of the sensor, has an optical axis which is different from the optical axis to the viewfinder system. A designator designates a particular sensing area, corresponding to the focal length of the lens, over the sensing elements of the sensor. A first distance data generator generates first distance data based on electrical signals generated by the sensing elements within the designated sensing area, and a second distance data generator generates second distance data based on electrical signals generated by the sensing elements outside of the designated sensing area. A discriminator discriminates whether the first distance data generator is operable. A selector selects the first distance data generator when it has been discriminated to be operable, and the second distance data generator when the first distance data generator is discriminated to be inoperable. A focusing device places the lens in an in-focus state based on the selected first or second distance data.

摘要翻译： 相机具有可变焦距透镜和取景器系统，其放大率根据透镜的焦距而变化。 线阵列传感器根据所接收的光的强度产生电信号。 将来自摄影对象的光透射到传感器的感测元件的距离测量光学系统具有与光轴与取景器系统不同的光轴。 指示符指示与传感器的感测元件对应的透镜焦距的特定感测区域。 第一距离数据发生器基于由指定感测区域内的感测元件产生的电信号产生第一距离数据，并且第二距离数据发生器基于由感测元件在指定感测区域外部产生的电信号产生第二距离数据。 鉴别器鉴别第一距离数据发生器是否可操作。 当识别出可以操作的选择器时，选择器选择第一距离数据发生器，并且当第一距离数据发生器被识别为不可操作时，选择器选择第一距离数据发生器。 聚焦装置基于所选择的第一或第二距离数据将透镜置于对焦状态。

公开(公告)号：US5721977A

公开(公告)日：1998-02-24

申请号：US784996

申请日：1997-01-17

申请人： Takeshi Yamawaki ,  Kenji Nakamura ,  Akira Shiraishi ,  Kazumi Kageyama

发明人： Takeshi Yamawaki ,  Kenji Nakamura ,  Akira Shiraishi ,  Kazumi Kageyama

IPC分类号： G02B7/34 ,  G03B13/36

CPC分类号： G02B7/34

摘要： A distance measuring apparatus includes a pair of line sensors. An image of an object is projected on the line sensor through a lens. The distance up to an object is measured according to the object image in the line sensor. The line sensor includes a plurality of pixels (CCD). The time period for respective pixels to complete charge accumulation with the pixel first completing charge accumulation as the pixel of quantizing reference becomes the data for the respective pixels. In the present invention, the range of pixels used for quantizing reference is altered according to variation in the focal length of the lens. The operation of distance measurement is terminated when charge accumulation for all the pixels within the range of the integration completion determination ends. The range of integration completion determination is altered according to the focal length, the measured brightness value and the shooting mode.

摘要翻译： 距离测量装置包括一对线传感器。 物体的图像通过透镜投影在线传感器上。 根据线传感器中的物体图像来测量到物体的距离。 线传感器包括多个像素（CCD）。 各像素完成电荷累积的时间周期作为量化参考的像素的像素首先完成电荷累积变为各个像素的数据。 在本发明中，用于量化参考的像素的范围根据透镜的焦距的变化而改变。 当积分完成确定范围内的所有像素的电荷累积结束时，距离测量的操作终止。 根据焦距，测量的亮度值和拍摄模式改变积分完成确定的范围。

公开(公告)号：US20100295918A1

公开(公告)日：2010-11-25

申请号：US12785450

申请日：2010-05-22

申请人： Takeshi Yamawaki

发明人： Takeshi Yamawaki

IPC分类号： B41J2/435 ,  G02B26/08

CPC分类号： B41J2/473 ,  G02B26/123

摘要： The optical scanning apparatus has at least two scanning units S1 and S2 which are arranged so as to oppose each other with a deflecting unit interposed therebetween. The scanning units include incident optical systems La and Lb that guide light beams emitted from light source units 1a and 1b to the deflecting unit 4, and imaging optical systems Ma and Mb that cause the light beams for scanning deflected on a deflecting surface of the deflecting unit to form images on surfaces 8a and 8b to be scanned. The two scanning units are configured such that the main scanning planes thereof including an optical reference axis C0 have different heights from a bottom surface 4c of the deflecting unit in the direction of the rotational axis of the deflecting unit.

摘要翻译： 光学扫描装置具有至少两个扫描单元S1和S2，这两个扫描单元S1和S2被布置为彼此相对，并且偏转单元插入其间。 扫描单元包括入射光学系统La和Lb，其将从光源单元1a和1b发射的光束引导到偏转单元4，以及使导致光束扫描的光学系统Ma和Mb在偏转的偏转表面上偏转 单元以在要扫描的表面8a和8b上形成图像。 两个扫描单元被构造成使得其包括光学参考轴线C0的主扫描平面在偏转单元的旋转轴线的方向上具有与偏转单元的底表面4c不同的高度。

公开(公告)号：US06930812B2

公开(公告)日：2005-08-16

申请号：US10255692

申请日：2002-09-27

申请人： Takeshi Yamawaki

发明人： Takeshi Yamawaki

IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B6/42 ,  G02B26/10 ,  G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： H04N1/113 ,  B41J2/473 ,  G02B6/4249 ,  G02B26/123

摘要： A multi-beam light scanning optical system includes n (n≧2) light source means having m (m≧2) light emitting points; beam synthesizing means for synthesizing n×m light beams emitted by the light source means; deflecting means for deflecting n×m light beams from the beam synthesizing means; an imaging optical system for imaging the n×m light beams from the deflecting means on a surface to be scanned, wherein the surface to be scanned is scanned in a main scan direction with n×m light beams by a deflection scanning operation of the deflecting means; an aperture stop provided between the beam synthesizing means and the deflecting means, wherein principal rays of the n×m light beams are intersected at a position of the aperture stop, and the light beams which are adjacent to each other in a sub-scan direction on the surface to be scanned are the beams emitted from different ones of the light source means.

摘要翻译： 多光束光扫描光学系统包括具有m（m> = 2）个发光点的n（n> = 2）个光源装置; 光束合成装置，用于合成由光源装置发射的n×m个光束; 用于偏转来自光束合成装置的n×m光束的偏转装置; 成像光学系统，用于对要扫描的表面上的偏转装置的n×m个光束进行成像，其中通过偏转装置的偏转扫描操作，用n×m个光束在主扫描方向上扫描被扫描的表面; 设置在光束合成装置和偏转装置之间的孔径光阑，其中nxm光束的主光线在孔径光阑的位置处相交，并且在子扫描方向上彼此相邻的光束 要扫描的表面是从不同的光源装置发射的光束。

公开(公告)号：US06282165B1

公开(公告)日：2001-08-28

申请号：US09585611

申请日：2000-06-02

申请人： Osamu Koyama ,  Takeshi Yamawaki

发明人： Osamu Koyama ,  Takeshi Yamawaki

IPC分类号： G11B718

CPC分类号： G11B7/1381 ,  G11B11/10515 ,  G11B11/10543 ,  G11B11/10545

摘要： An optical recording/reproducing apparatus includes an irradiation optical system for irradiating a light beam from a light source onto a predetermined track of an optical recording medium having a plurality of neighboring tracks as a fine light spot so as to perform recording/reproduction of information or reproduction of information, and a detection optical system for detecting a returned light beam from the optical recording medium. A mask is arranged in a far field region sufficiently separated from a focal plane of the detection optical system, for masking marginal rays, in a direction perpendicular to the track, of the returned light beam, so that information reproduced from a track adjacent to the predetermined track upon reproduction of information on the predetermined track is reduced.

摘要翻译： 一种光学记录/再现装置包括：一个照射光学系统，用于将来自光源的光束照射到具有多个相邻轨道的光学记录介质的预定轨道上作为精细光点，以执行信息的记录/再现;或者 信息的再现以及用于检测来自光记录介质的返回光束的检测光学系统。 掩模布置在与检测光学系统的焦平面充分分离的远场区域中，用于掩蔽与所述轨迹垂直的方向上的边缘光线，从而从与所述检测光学系统相邻的轨道再现的信息 减少了在预定轨道上再现信息时的预定轨迹。

公开(公告)号：US06141302A

公开(公告)日：2000-10-31

申请号：US954875

申请日：1997-10-21

申请人： Osamu Koyama ,  Takeshi Yamawaki

发明人： Osamu Koyama ,  Takeshi Yamawaki

IPC分类号： G11B11/10 ,  G11B7/135 ,  G11B11/105 ,  G11B7/095

CPC分类号： G11B7/1381 ,  G11B11/10515 ,  G11B11/10543 ,  G11B11/10545

摘要： An optical recording/reproducing apparatus includes an irradiation optical system for irradiating a light beam from a light source onto a predetermined track of an optical recording medium having a plurality of neighboring tracks as a fine light spot so as to perform recording/reproduction of information or reproduction of information, and a detection optical system for detecting a returned light beam from the optical recording medium. A mask is arranged in a far field region sufficiently separated from a focal plane of the detection optical system, for masking marginal rays, in a direction perpendicular to the track, of the returned light beam, so that information reproduced from a track adjacent to the predetermined track upon reproduction of information on the predetermined track is reduced.

公开(公告)号：US6141118A

公开(公告)日：2000-10-31

申请号：US872043

申请日：1997-06-10

申请人： Takeshi Yamawaki ,  Kazuyuki Kondo ,  Hiroshi Sato ,  Kazumi Kimura

发明人： Takeshi Yamawaki ,  Kazuyuki Kondo ,  Hiroshi Sato ,  Kazumi Kimura

IPC分类号： B41J2/47 ,  G02B26/12 ,  H04N1/40

CPC分类号： G02B26/125 ,  B41J2/471

摘要： An optical scanning device corrects a scanning line curvature and prevents image quality degradation, while spatially separating a plurality of light beams at oblique angles of incidence despite its compact magnifying optical scanning device construction. The optical scanning device directs, to the deflection surface of an optical deflector via a cylindrical lens, the plurality of light beams emitted by a light source having a plurality of light emission sections, guides, via an f.theta. lens system to a surface being scanned, the plurality of light beams deflected by the optical deflector so that the plurality of light beams scan the surface being scanned. The f.theta. lens system has a plurality of rotationally asymmetrical lenses, the optical axes of which are substantially parallel with the light beams incident on the respective lenses, and each of the generatrices that connect the vertices of a radius curvature on a lens surface in the sub scanning direction of the rotationally asymmetrical lenses is curved in a sub scan direction.

摘要翻译： 光学扫描装置校正扫描线曲率并防止图像质量下降，而空间上以倾斜入射角分离多个光束，尽管其具有紧凑的放大光学扫描装置结构。 光学扫描装置经由柱面透镜引导到具有多个发光部分的光源发射的多个光束，经由fθ透镜系统引导到正被扫描的表面的光学偏转器的偏转表面 由光偏转器偏转的多个光束使得多个光束扫描被扫描的表面。 fθ透镜系统具有多个旋转非对称透镜，其光轴基本上与入射在相应透镜上的光束平行，并且每个母线将透镜表面上的半径曲率的顶点连接在 旋转不对称透镜的副扫描方向在副扫描方向上弯曲。

公开(公告)号：US6046835A

公开(公告)日：2000-04-04

申请号：US999130

申请日：1997-12-29

申请人： Takeshi Yamawaki ,  Hiroshi Sato ,  Kazumi Kimura

发明人： Takeshi Yamawaki ,  Hiroshi Sato ,  Kazumi Kimura

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B13/18 ,  G02B26/12 ,  G02B26/08

CPC分类号： B41J2/473 ,  G02B26/123 ,  H04N1/1135 ,  H04N1/1912 ,  H04N2201/0082

摘要： In a scanning optical apparatus, a light beam emitted by a light source is caused to be obliquely incident on a deflection surface of an optical deflector in a sub scanning section through an optical device to form an image of the light beam deflectively reflected by the optical deflector on a surface to be scanned by an imaging optical system. A lateral magnification of the imaging optical system in a sub scanning direction is caused to change in accordance with a distance away from the on-axis to an off-axis along the main scanning direction.

摘要翻译： 在扫描光学装置中，通过光学装置使由光源发射的光束倾斜地入射在副扫描部分中的偏光板的偏转表面上，以形成被光学偏转反射的光束的图像 偏转器在被成像光学系统扫描的表面上。 使得成像光学系统在副扫描方向上的横向放大倍数根据沿着主扫描方向离开轴上离离轴的距离而变化。

公开(公告)号：US08130254B2

公开(公告)日：2012-03-06

申请号：US12785450

申请日：2010-05-22

申请人： Takeshi Yamawaki

发明人： Takeshi Yamawaki

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： B41J2/473 ,  G02B26/123

摘要： The optical scanning apparatus has at least two scanning units S1 and S2 which are arranged so as to oppose each other with a deflecting unit interposed therebetween. The scanning units include incident optical systems La and Lb that guide light beams emitted from light source units 1a and 1b to the deflecting unit 4, and imaging optical systems Ma and Mb that cause the light beams for scanning deflected on a deflecting surface of the deflecting unit to form images on surfaces 8a and 8b to be scanned. The two scanning units are configured such that the main scanning planes thereof including an optical reference axis C0 have different heights from a bottom surface 4c of the deflecting unit in the direction of the rotational axis of the deflecting unit.

摘要翻译： 光学扫描装置具有至少两个扫描单元S1和S2，这两个扫描单元S1和S2被布置为彼此相对，并且偏转单元插入其间。 扫描单元包括入射光学系统La和Lb，其将从光源单元1a和1b发射的光束引导到偏转单元4，以及使导致光束扫描的光学系统Ma和Mb在偏转的偏转表面上偏转 单元以在要扫描的表面8a和8b上形成图像。 两个扫描单元被构造成使得其包括光学参考轴线C0的主扫描平面在偏转单元的旋转轴线的方向上具有与偏转单元的底表面4c不同的高度。

公开(公告)号：US07557974B2

公开(公告)日：2009-07-07

申请号：US12243124

申请日：2008-10-01

申请人： Yuichi Tomioka ,  Takeshi Yamawaki

发明人： Yuichi Tomioka ,  Takeshi Yamawaki

IPC分类号： G02B26/08

CPC分类号： G02B26/125 ,  G02B13/0005

摘要： A compact optical scanning apparatus capable of desirably correcting an f characteristic, a field curvature, and other aberrations, and an image forming apparatus using the same, which includes an incident optical system (LA) for guiding a beam from a light source (1) to a deflector (4) and an imaging optical system (LB) for guiding the beam to a scanning surface (7), wherein a scanning field angle region where 1

摘要翻译： 一种能够期望地校正f特性，场曲率和其它像差的紧凑型光学扫描装置及其使用方法的图像形成装置，其包括用于引导来自光源（1）的光束的入射光学系统（LA） 涉及用于将光束引导到扫描表面（7）的偏转器（4）和成像光学系统（LB），其中在有效扫描场角区域内存在满足1 <3和2 <3的扫描场角区域， 其中在主扫描横截面中并且对于扫描场角1,2表示入射到包括在成像光学系统中并位于最靠近扫描表面的光学元件的光束的主射线与成像光轴之间的角度 光学系统，3是来自光学元件的光束的主光线与光轴之间的角度。