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1. 发明授权

US06954222B2 Manufacturing method of scanning optical system 有权
标题翻译：扫描光学系统的制造方法
公开(公告)号：US06954222B2
公开(公告)日：2005-10-11
申请号：US10643900
申请日：2003-08-20
申请人： Takashi Iizuka , Yutaka Takakubo
发明人： Takashi Iizuka , Yutaka Takakubo
IPC分类号： G02B26/12 , B41J27/00
CPC分类号： G02B26/125
摘要： A laser beam emitted by a light source is incident on one of reflecting surfaces of a polygon mirror. The laser beam reflected by the reflecting surface is dynamically deflected in a main scanning direction due to the revolution of the polygon mirror and enters a scanning lens. The first surface of the scanning lens is provided with anti-reflection coating only when the following condition (1) is satisfied: H/2>|2βD(D−Rz1)/Rz1| (1) where “H” denotes the width of each reflecting surface of the polygon mirror in a auxiliary scanning direction, “β” denotes the incident angle [radian] of the laser beam on the reflecting surface of the polygon mirror in the auxiliary scanning direction, “D” denotes the distance between the reflecting surface and the first surface of the scanning lens, and “Rz1” denotes the curvature radius of the first surface in an auxiliary scanning cross section.
摘要翻译：由光源发射的激光束入射到多面镜的反射面之一上。由反射面反射的激光束由于多面反射镜的旋转而在主扫描方向上动态偏转并进入扫描透镜。仅当满足以下条件（1）时，扫描透镜的第一表面设置有防反射涂层：<？在线公式描述=“在线公式”末端=“铅”→> H / 2 > | 2betaD（D-Rz 1/1）/ Rz＆lt; 1＆gt; （1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中“H”表示多面镜在辅助扫描方向上的每个反射面的宽度，“β”表示在辅助扫描方向上的多面反射镜的反射面上的激光束的入射角[弧度]表示反射面与扫描透镜的第一面之间的距离，“Rz” “表示辅助扫描横截面中的第一表面的曲率半径。

2. 发明授权

US08305449B2 Apparatus for detecting focus 有权
标题翻译：检测焦点的装置
公开(公告)号：US08305449B2
公开(公告)日：2012-11-06
申请号：US12822383
申请日：2010-06-24
申请人： Koichi Sato , Yutaka Takakubo , Kazuo Sugitani
发明人： Koichi Sato , Yutaka Takakubo , Kazuo Sugitani
IPC分类号： H04N5/33 , H04N5/228
CPC分类号： H04N5/23212 , G02B7/38 , G03B13/36 , G03B19/12
摘要： An apparatus for detecting a focus state has an optical image-forming system that forms an object image, a plurality of line sensors that is arranged on a projected area of the optical image-forming system; a plurality of monitor sensors that is arranged on the projected area along the direction of a line-sensor array, each monitor sensor being adjacent to a corresponding line sensor and monitoring an amount of light incident on the corresponding line sensor; and a signal processor that outputs image-pixel signals corresponding to the object image on the basis of electric charges accumulated in the plurality of line sensors. At least an endmost monitor sensor corresponding to an endmost line sensor is arranged on the center-facing side of the endmost line sensor.
摘要翻译：用于检测聚焦状态的设备具有形成物体图像的光学图像形成系统，布置在光学图像形成系统的投影区域上的多个线传感器; 多个监测传感器，沿着线传感器阵列的方向布置在投影区域上，每个监测传感器与相应的线传感器相邻，并监测入射在相应的线传感器上的光量; 以及信号处理器，其基于在多个线传感器中累积的电荷输出与对象图像相对应的图像像素信号。在最终线传感器的中心侧，至少配置有与最末端线传感器对应的最终监视传感器。

3. 发明授权

US07375869B2 Tandem type scanning optical system 有权
标题翻译：串联式扫描光学系统
公开(公告)号：US07375869B2
公开(公告)日：2008-05-20
申请号：US11298534
申请日：2005-12-12
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： G02B26/08
CPC分类号： H04N3/08 , G02B26/123 , G02B26/125
摘要： A scanning optical system is provided with a light source configured to emit a plurality of beams, a deflecting device configured to deflect the plurality of beams simultaneously to scan in a main scanning direction, and an imaging optical system configured to converge the plurality of beams on a plurality of target surfaces to form a plurality of beam spots scanning on the plurality of target surfaces, respectively.
摘要翻译：扫描光学系统设置有被配置为发射多个光束的光源，被配置为同时偏转多个光束以在主扫描方向上扫描的偏转装置，以及被配置为将多个光束会聚在一起的成像光学系统多个目标表面，以分别在多个目标表面上形成扫描的多个光束点。

4. 发明申请

US20060023971A1 Scanning optical system 失效
标题翻译：扫描光学系统
公开(公告)号：US20060023971A1
公开(公告)日：2006-02-02
申请号：US11188869
申请日：2005-07-26
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： G06K9/20
CPC分类号： G02B26/125 , G02B3/08
摘要： A scanning optical system comprises: a light source which emits a beam of light; a deflecting system that dynamically deflects the beam emitted by the light source with its deflecting surface; and a scan lens group including a molded resin lens, which focuses the beam dynamically deflected and scanned in a main scanning direction by the deflecting system on an image formation surface. In the scanning optical system, the molded resin lens has a diffracting lens surface which is provided with a diffractive level difference structure formed on a base curve having refractive power, and a following condition is satisfied: 18
摘要翻译：扫描光学系统包括：发射光束的光源; 偏转系统，其使由光源发射的光束及其偏转表面动态地偏转; 以及包括模制树脂透镜的扫描透镜组，其将通过偏转系统在主扫描方向上动态偏转和扫描的光束聚焦在图像形成表面上。在扫描光学系统中，模制树脂透镜具有衍射透镜表面，该衍射透镜表面设置有形成在具有屈光力的基础曲线上的衍射级差分结构，并且满足以下条件：<？in-line-formula description =“ 在线公式“end =”lead“？> 18 其中”W“表示有效扫描宽度（mm），“L”表示从偏转面到成型树脂透镜的距离（mm），“P”表示从偏转面到成像面的距离（mm）。

5. 发明授权

US06954296B2 Scanning optical system 有权
标题翻译：扫描光学系统
公开(公告)号：US06954296B2
公开(公告)日：2005-10-11
申请号：US10347282
申请日：2003-01-21
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： B41J2/44 , B41J2/47 , G02B17/08 , G02B26/10 , G02B26/12 , H04N1/036 , H04N1/113 , G02B26/08
CPC分类号： B41J2/473 , G02B26/123
摘要： A scanning optical system is provided with a light source, a polygonal mirror, and an imaging optical system that converges the at least one beam deflected by the polygonal mirror. The imaging optical system has a scanning lens, and a compensation lens. The light source is arranged so that beams emitted by the light source are incident on the polygonal mirror from the outside of the predetermined scanning range in the main scanning direction and are incident on the polygonal mirror being inclined in an auxiliary scanning direction with respect to a plane perpendicular to a rotational axis of the polygonal mirror. Further, at least one surface of the scanning lens has a first anamorphic surface, power of the first anamorphic surface in the auxiliary scanning direction is distributed asymmetrically in the main scanning direction with respect to an optical axis of said scanning lens. Further, power of each surface of the compensation lens in the auxiliary scanning direction is distributed symmetrically with respect to a center position of said each surface.
摘要翻译：扫描光学系统设置有光源，多面镜和会聚由多面镜偏转的至少一个光束的成像光学系统。成像光学系统具有扫描透镜和补偿透镜。光源被布置成使得由光源发射的光束在主扫描方向上从预定扫描范围的外侧入射到多面镜上，并且入射在多面镜上，辅助扫描方向相对于垂直于多面镜的旋转轴的平面。此外，扫描透镜的至少一个表面具有第一变形面，辅助扫描方向上的第一变形面的功率相对于扫描透镜的光轴在主扫描方向上不对称地分布。此外，辅助扫描方向上的补偿透镜的每个表面的功率相对于所述每个表面的中心位置对称地分布。

6. 发明授权

US06873466B2 Scanning optical system 失效
标题翻译：扫描光学系统
公开(公告)号：US06873466B2
公开(公告)日：2005-03-29
申请号：US10606221
申请日：2003-06-26
申请人： Yoshihiro Hama , Yutaka Takakubo , Yasushi Suzuki , Shimpei Shinozaki , Toshimitsu Saito
发明人： Yoshihiro Hama , Yutaka Takakubo , Yasushi Suzuki , Shimpei Shinozaki , Toshimitsu Saito
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , G02B27/00 , H04N1/036 , H04N1/113 , G02B27/10 , B41J27/00
CPC分类号： G02B26/125 , G02B27/0018
摘要： A scanning optical system deflects a light beam by a reflection surface of a polygon mirror toward an object surface through an image forming optical system so that the light beam scans on the object surface to form an image thereon. A light shielding member is disposed between the polygon mirror and the image forming optical system. The shielding member is an opaque plate disposed perpendicular to the optical axis of the image forming optical system. The light shielding member prevents a ghost light that is reflected by another reflection surface of the polygon mirror located adjacent to the reflection surface deflecting the light beam from entering the image forming optical system and impinging onto the object surface.
摘要翻译：扫描光学系统通过图像形成光学系统将多边形反射镜的反射面朝向物体表面偏转，使得光束在物体表面上扫描以在其上形成图像。遮光构件设置在多面镜和图像形成光学系统之间。屏蔽构件是垂直于成像光学系统的光轴布置的不透明板。遮光构件防止由偏转光束的反射面附近的多面反射镜的另一反射面反射的重影光进入图像形成光学系统并撞击物体表面。

7. 发明授权

US06831763B2 Scanning optical system 失效
标题翻译：扫描光学系统
公开(公告)号：US06831763B2
公开(公告)日：2004-12-14
申请号：US10658457
申请日：2003-09-10
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： G02B2608
CPC分类号： G02B26/123 , B41J2/473
摘要： In a scanning optical system including a polygon mirror for dynamically deflecting N laser beams corresponding to N color components and an imaging optical system for converging the laser beams into spot beams on N photosensitive drums respectively, the imaging optical system includes: a front lens group for converging the laser beams principally in a main scanning direction while deflecting the beams to deviate from its optical surface reference axis; and N rear lens groups for converging the laser beams principally in an auxiliary scanning direction respectively. The rear surface of the front lens group and front surfaces of the rear lens groups are formed as two-dimensional polynomial aspherical surfaces. Concretely, the rear surface is formed as a step-like optical surface having N discrete areas of different heights. By the system, the laser beams are separated sufficiently to match the intervals between the photosensitive drums without the need of long optical paths, without deteriorating the scanning performance, and without the need of using mirrors which cause color misregistration and increase costs.
摘要翻译：在包括用于动态偏转对应于N个颜色分量的N个激光束的多面镜的扫描光学系统和用于将激光束分别聚焦在N个感光鼓上的点光束的成像光学系统中，成像光学系统包括：前透镜组，主要在主扫描方向会聚激光束，同时偏转光束偏离其光学表面参考轴线; 和N个后透镜组，用于主要在辅助扫描方向上会聚激光束。前透镜组的后表面和后透镜组的前表面形成为二维多项式非球面。具体地，后表面形成为具有不同高度的N个离散区域的阶梯状光学表面。通过该系统，激光束被充分分离以匹配感光鼓之间的间隔，而不需要长的光路，而不会降低扫描性能，并且不需要使用引起颜色不对准和增加成本的反射镜。

8. 发明授权

US06717705B2 Scanning optical system 失效
标题翻译：扫描光学系统
公开(公告)号：US06717705B2
公开(公告)日：2004-04-06
申请号：US10294615
申请日：2002-11-15
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： G02B2608
CPC分类号： G02B26/125 , G02B26/123
摘要： A scanning optical system is provided with a light source that emits at least one beam, an anamorphic optical element that converges the at least one beam in an auxiliary scanning direction, a polygonal mirror, and an imaging optical system. The imaging optical system has a scanning lens, and a compensation lens. One surface of the scanning lens has an anamorphic aspherical surface whose curvature in the auxiliary scanning direction is determined independently from a cross-sectional shape thereof along the main scanning direction. Further, one surface of the compensation lens has an aspherical surface in which a tilt angle of a cross-sectional shape in the auxiliary scanning direction changes with a position in the main scanning direction, the aspherical surface being asymmetrical with respect to a plane perpendicular to the auxiliary scanning direction and including a central point thereof.
摘要翻译：扫描光学系统设置有发射至少一个光束的光源，使辅助扫描方向上的至少一个光束会聚的变形光学元件，多面镜和成像光学系统。成像光学系统具有扫描透镜和补偿透镜。扫描透镜的一个表面具有变形非球面，其辅助扫描方向上的曲率独立于主扫描方向的横截面形状来确定。此外，补偿透镜的一个表面具有非球面，其中辅助扫描方向上的横截面形状的倾斜角随主扫描方向的位置而变化，非球面相对于垂直于主扫描方向的平面不对称辅助扫描方向并且包括其中心点。

9. 发明授权

US08570668B2 Imaging optical system and imaging apparatus 有权
标题翻译：成像光学系统和成像设备
公开(公告)号：US08570668B2
公开(公告)日：2013-10-29
申请号：US13237238
申请日：2011-09-20
申请人： Yutaka Takakubo , Eijiroh Tada , Koichi Maruyama
发明人： Yutaka Takakubo , Eijiroh Tada , Koichi Maruyama
IPC分类号： G02B17/00
CPC分类号： G02B13/0065
摘要： An imaging optical system, which includes an imaging lens group having at least one lens, and an image side prism that bends light which has passed through the imaging lens group toward an image pickup device arranged at a predetermined position, and wherein the image side prism includes a reflection surface which reflects, toward the image pickup device, incident light proceeding from the imaging lens group and an exit surface from which light reflected from the reflection surface emerges, and wherein the image side prism has a cut surface formed by cutting off a vertex portion between the reflection surface and the exit surface such that a whole normal light incident area within which normal light is incident on the reflection surface remains, and the cut surface is a non-diffusing surface.
摘要翻译：一种成像光学系统，其包括具有至少一个透镜的成像透镜组和将已经通过成像透镜组的光朝向布置在预定位置的图像拾取装置弯曲的图像侧棱镜，并且其中所述图像侧棱镜包括反射面，朝向图像拾取装置反射从成像透镜组行进的入射光和从反射面反射的光的出射面，其中，图像侧棱镜具有通过切断形成的切割面在反射面和出射面之间的顶点部分，使得其中正常光入射到反射面上的整个正常光入射区域保留，并且切割表面是非扩散表面。

10. 发明授权

US08213785B2 Focus detection optical system 有权
标题翻译：聚焦检测光学系统
公开(公告)号：US08213785B2
公开(公告)日：2012-07-03
申请号：US12980683
申请日：2010-12-29
申请人： Yutaka Takakubo
发明人： Yutaka Takakubo
IPC分类号： G03B13/36
CPC分类号： G03B13/36 , G03B3/10 , G03B13/18
摘要： A focus detection optical system includes a condenser lens positioned behind an expected image plane of a photographing lens, an auxiliary lens positioned behind the condenser lens, and a separator lens including a pair of lenses behind the auxiliary lens. An object image formed on the expected image plane is divided into two images by the pair of lenses and reformed on a pair of areas on a sensor. The auxiliary lens is a plastic lens having a negative refractive power. The separator lens is a glass lens or a hybrid lens consisting of a glass substrate and a plastic lens having a curved surface which is layered onto the glass substrate, and the focus detection optical system satisfies the following condition (1): 0.068
摘要翻译：焦点检测光学系统包括位于拍摄镜头的期望图像平面后面的聚光透镜，位于聚光透镜后面的辅助透镜，以及在辅助透镜后面包括一对透镜的分离透镜。形成在预期图像平面上的物体图像被该对透镜分成两个图像，并在传感器上的一对区域上重新形成。辅助透镜是具有负屈光力的塑料透镜。分离透镜是由玻璃基板和具有层叠在玻璃基板上的曲面的塑料透镜构成的玻璃透镜或混合透镜，焦点检测光学系统满足以下条件（1）：0.068

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