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11. 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。

12. 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。

13. 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。

14. 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。

15. 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。

16. 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

17. 发明申请

US20120075726A1 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：US20120075726A1
公开(公告)日：2012-03-29
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： G02B17/08
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。

18. 发明申请

US20110170847A1 FOCUS DETECTION OPTICAL SYSTEM 有权
标题翻译：聚焦检测光学系统
公开(公告)号：US20110170847A1
公开(公告)日：2011-07-14
申请号：US12980683
申请日：2010-12-29
申请人： Yutaka TAKAKUBO
发明人： Yutaka TAKAKUBO
IPC分类号： G03B13/00
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

19. 发明申请

US20070002446A1 DIFFRACTIVE LENS AND SCANNING LENS FORMED WITH DIFFRACTIVE LENS 有权
标题翻译： DIFFRACTIVE LENS AND SCANNING LENS FORMED DIFFRACTIVE LENS
公开(公告)号：US20070002446A1
公开(公告)日：2007-01-04
申请号：US11427521
申请日：2006-06-29
申请人： Shuichi TAKEUCHI , Yutaka TAKAKUBO
发明人： Shuichi TAKEUCHI , Yutaka TAKAKUBO
IPC分类号： G02B5/18
CPC分类号： G02B5/1814 , G02B3/08 , G02B26/125
摘要： A scanning lens for an imaging optical system converges a beam emitted by a light source and deflected by a deflector on a target surface to form a beam spot scanning in a main scanning direction thereon. The scanning lens includes a plastic lens formed by injection molding, which has a diffractive lens structure on at least one surface thereof. The diffractive Wens structure has a plurality of annular zones arranged concentrically about a rotational axis. Each annular zone has a diffracting surface that diffracts the light beam passing therethrough. The diffractive lens structure has stepped surfaces each connecting adjoining diffracting surfaces In a plane including the rotational axis and parallel with the main scanning direction, the stepped surfaces are inclined with respect to the rotational axis so that stress working between a metallic molding for the plastic lens and each of the stepped surfaces in demolding is reduced.
摘要翻译：用于成像光学系统的扫描透镜会聚由光源发射并由偏转器偏转在目标表面上的光束，以在其上沿主扫描方向形成光束点扫描。扫描透镜包括通过注射成型形成的塑料透镜，其在至少一个表面上具有衍射透镜结构。衍射Wens结构具有围绕旋转轴线同心布置的多个环形区域。每个环形区域具有衍射通过其的光束的衍射表面。衍射透镜结构具有各自连接相邻的衍射面的阶梯面，在包含旋转轴线且与主扫描方向平行的平面中，阶梯面相对于旋转轴线倾斜，使得塑料透镜用金属成形体并且脱模中的每个台阶表面减小。

20. 发明授权

US08395854B2 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：US08395854B2
公开(公告)日：2013-03-12
申请号：US13217623
申请日：2011-08-25
申请人： Yutaka Takakubo , Eijiroh Tada
发明人： Yutaka Takakubo , Eijiroh Tada
IPC分类号： G02B17/00
CPC分类号： G02B13/0065 , G02B13/0045
摘要： An imaging optical system, including an imaging lens group, an image side prism having an entrance surface a reflection surface and an exit surface from which light exits toward an image pickup device, and a first shielding member shielding at least a part of a region on the entrance surface, wherein the region on the entrance surface is located from an edge line of an apex between the entrance surface and the exit surface to a position corresponding to a height h from the edge line, and when L represents a length of the exit surface, α represents an angle formed between the reflection surface and the exit surface, n represents a refractive index of a surrounding area of the image side prism, and n′ represents a refractive index of the image side prism, the height h satisfies a following condition: h=L×cos {α+sin−1(n/n′)}.
摘要翻译：一种成像光学系统，包括成像透镜组，具有入射表面的反射表面的图像侧棱镜和光朝向图像拾取装置射出的出射表面，以及屏蔽至少一部分区域的第一屏蔽构件入射面，其中入射面上的区域从入射面和出射面的顶点的边缘线位于与边缘线对应的高度h的位置，并且当L表示出口的长度时表面，α表示在反射面和出射面之间形成的角度，n表示像侧棱镜的周围区域的折射率，n'表示像侧棱镜的折射率，高度h满足以下条件：h = L×cos {α+ sin-1（n / n'）}。

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