公开(公告)号：US20020136547A1

公开(公告)日：2002-09-26

申请号：US10101837

申请日：2002-03-21

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G03B017/00

CPC classification number: G03B17/00

Abstract: A lens assembly includes an exposure control unit having an exposure control member; a lens drive unit including a lens drive mechanism which moves a photographing lens group in an optical axis direction; center apertures which are formed in the exposure control unit and the lens drive unit, respectively, at the center portions thereof, which define a lens movement opening when the exposure control unit and the lens drive unit are connected to each other; and a lens support frame which supports the photographing lens group, the lens support frame being provided in the lens movement openings so as to move in the optical axis direction and driven via the lens drive mechanism.

Abstract translation: 一种透镜组件，包括具有曝光控制构件的曝光控制单元; 透镜驱动单元，其包括在光轴方向上移动拍摄透镜组的透镜驱动机构; 在曝光控制单元和透镜驱动单元分别在其中心部分形成有曝光控制单元和透镜驱动单元彼此连接的透镜移动开口的中心孔径; 以及透镜支撑框架，其支撑拍摄透镜组，透镜支撑框架设置在透镜移动开口中，以沿光轴方向移动并经由透镜驱动机构驱动。

公开(公告)号：US20020135903A1

公开(公告)日：2002-09-26

申请号：US10101149

申请日：2002-03-20

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G02B007/02

CPC classification number: G02B7/10

Abstract: A light intercepting member driving mechanism includes light intercepting members which are each rotatable about a rotational axis parallel with an optical axis to open and close a photographing aperture; a drive ring which engages with the light intercepting member to open and close the light intercepting member in accordance with the angular displacement of the drive ring in forward and reverse directions about a rotational axis coincident with the optical axis; a motor which rotates the drive ring in the forward and reverse directions; a position indication portion provided on the drive ring to indicate the angular position of the drive ring; and a stationary detector which detects a passing of the position indication portion when the drive ring is rotated. The opening state of the light intercepting members is detected by the stationary detector and the position indication portion.

Abstract translation: 遮光构件驱动机构包括：遮光构件，其各自围绕与光轴平行的旋转轴线旋转以打开和关闭拍摄孔; 驱动环，其与所述遮光部件接合，以根据所述驱动环在与所述光轴重合的旋转轴线的正向和反向方向上的角位移来打开和关闭所述遮光部件; 使驱动环沿前后方向旋转的马达; 设置在所述驱动环上以指示所述驱动环的角位置的位置指示部; 以及固定式检测器，其在驱动环旋转时检测位置指示部的通过。 遮光构件的打开状态由静止检测器和位置指示部检测。

公开(公告)号：US20020135898A1

公开(公告)日：2002-09-26

申请号：US10101619

申请日：2002-03-21

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Yoshihiro Yamazaki ,  Isao Okuda ,  Satoru Nakamura

IPC: G02B015/14 ,  G02B015/22 ,  G02B007/02

CPC classification number: G02B7/102

Abstract: A lens barrel includes a front lens frame supporting a front lens group; a rear lens frame supporting a rear lens group; a cam ring including first and second cam grooves which receive first and second cam followers of the front and rear lens frames; the first and second cam grooves include first and second moving sections and first and second accommodation sections, respectively; and a guiding mechanism allowing the rear lens frame to relatively rotate when the second cam follower engages in a vicinity an accommodation position of the second accommodation section, and prohibiting the rear lens frame from relatively rotating while allowing the rear lens frame to only relatively move in the optical axis direction when the second cam follower engages in a section of the second cam groove which includes the second moving section and excludes this vicinity.

Abstract translation: 镜筒包括支撑前透镜组的前透镜框; 支撑后透镜组的后透镜框; 凸轮环包括第一和第二凸轮槽，所述第一和第二凸轮槽容纳前后透镜框架的第一和第二凸轮从动件; 第一和第二凸轮槽分别包括第一和第二移动部分和第一和第二容纳部分; 以及引导机构，当所述第二凸轮从动件接合在所述第二容纳部的收纳位置附近时，所述后透镜框架能够相对旋转，并且禁止所述后透镜框架相对旋转，同时允许所述后透镜框架仅相对移动 当第二凸轮从动件接合在包括第二移动部分的第二凸轮槽的一部分中并且不包括该附近时的光轴方向。

公开(公告)号：US20020036842A1

公开(公告)日：2002-03-28

申请号：US09960520

申请日：2001-09-24

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G02B015/22 ,  G02B015/14 ,  G02B007/02

CPC classification number: C08J11/16 ,  C08J2321/00 ,  G02B7/10 ,  Y02W30/705

Abstract: A lens barrel includes front and rear sub-lens groups; front and rear sub-lens group frames for supporting the front and rear sub-lens groups, respectively; a lens frame shift mechanism for causing the front sub-lens group frame and the rear sub-lens group frame to move relative to each other to obtain the mutually close position and the mutually distant position; a first lens group positioning surface provided on the front sub-lens group frame for positioning the front sub-lens group by contacting with a portion of a rear surface of the front sub-lens group; and a second lens group positioning surface provided on the rear sub-lens group frame for positioning the front sub-lens group by contacting with a portion of a front surface of the rear sub-lens group.

Abstract translation: 镜筒包括前后副镜头组; 分别支撑前后副透镜组的前后副镜头组框架; 一个透镜框架移动机构，用于使前副子透镜组框架和后副透镜组框架相对移动以获得相互关闭位置和相互远离的位置; 第一透镜组定位表面，设置在前副透镜组框架上，用于通过与前副透镜组的后表面的一部分接触来定位前副透镜组; 以及设置在后副透镜组框架上的第二透镜组定位表面，用于通过与后副透镜组的前表面的一部分接触来定位前副透镜组。

公开(公告)号：US20010019458A1

公开(公告)日：2001-09-06

申请号：US09772872

申请日：2001-01-31

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Nobuaki Aoki ,  Yoshihiro Yamazaki ,  Satoru Nakamura

IPC: G02B015/14 ,  G02B007/02

CPC classification number: G02B7/10

Abstract: A movable lens hood mechanism of a zoom lens includes a plurality of lens groups guided linearly in a direction of an optical axis to change a focal length of the zoom lens; a first cam barrel rotatably driven to move the plurality of lens groups in the optical axis direction; a movable hood barrel having a photographic aperture positioned in front of the frontmost lens group and guided linearly in the optical axis direction; and a feed mechanism which drives the movable hood barrel forward/rearward in the optical axis direction relative to the frontmost lens group by rotation of the first cam barrel so that a space between the photographic aperture of the movable lens hood and the frontmost lens group in the optical axis direction varies in accordance with a variation of a focal length of the zoom lens.

Abstract translation: 变焦透镜的可移动透镜罩机构包括沿光轴方向线性引导的多个透镜组，以改变变焦透镜的焦距; 第一凸轮筒，其被可旋转地驱动以在所述光轴方向上移动所述多个透镜组; 可移动的罩筒，具有位于最前面的透镜组的前方并沿光轴方向直线引导的照相孔; 以及馈送机构，其通过第一凸轮筒的旋转而相对于最前面的透镜组在光轴方向上向前/向后驱动可动罩筒，使得可移动透镜罩的照相孔与最前面的透镜组之间的空间 光轴方向根据变焦透镜的焦距的变化而变化。

公开(公告)号：US20010017736A1

公开(公告)日：2001-08-30

申请号：US09774112

申请日：2001-01-31

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Nobuaki Aoki ,  Yoshihiro Yamazaki ,  Satoru Nakamura

IPC: G02B015/14 ,  G02B007/02

CPC classification number: G02B7/10

Abstract: A zoom lens includes a plurality of lens groups, and a cam barrel having a cam groove formed on an inner peripheral surface thereof. The cam barrel includes a first barrel having the cam groove on an inner peripheral surface thereof, and a second barrel which is fitted on a front part of an outer peripheral surface of the first barrel, the first barrel and second barrel being movable in the optical axis direction with a predetermined clearance provided therebetween in the optical axis direction while being rotatable together about the optical axis, so that an external force applied to the zoom lens from the outside of the zoom lens is transmitted to the first barrel via the second barrel.

Abstract translation: 变焦透镜包括多个透镜组，以及具有形成在其内周表面上的凸轮槽的凸轮筒。 凸轮筒包括在其内周表面上具有凸轮槽的第一筒和装配在第一筒的外周表面的前部上的第二筒，第一筒和第二筒可以在光学器件中移动 在光轴方向上设置有预定的间隙，同时能够围绕光轴一起旋转，使得从变焦透镜的外部施加到变焦透镜的外力经由第二筒传递到第一筒。

公开(公告)号：US20020136556A1

公开(公告)日：2002-09-26

申请号：US10101150

申请日：2002-03-20

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G03B009/00

CPC classification number: G03B9/00

Abstract: A lens shutter mechanism includes a support frame having a photographing aperture; at least three shutter sectors which open and close the photographing aperture via rotating axes which extend parallel to the optical axis; and at least three diaphragm sectors which vary an aperture diameter formed by the diaphragm sectors to restrict the diameter of the photographing aperture, independently from the shutter sectors, via rotating axes which extend parallel to the optical axis. The support frame is provided with rotational center portions spaced from each other at equi-angular intervals about the optical axis, the number of the rotational center portions being same as each of the number of the shutter sectors and the number of the diaphragm sectors. Each of the rotational center portions rotatably and coaxially supports a one of the shutter sectors and one of the diaphragm sectors.

Abstract translation: 透镜快门机构包括具有拍摄孔的支撑框架; 至少三个快门扇区，其通过平行于光轴延伸的旋转轴来打开和关闭拍摄孔; 以及至少三个隔膜扇区，其改变由隔膜扇区形成的孔直径，以通过平行于光轴延伸的旋转轴独立于活门扇区来限制拍摄孔的直径。 支撑框架设置有围绕光轴以等角度间隔彼此隔开的旋转中心部分，旋转中心部分的数量与多个快门扇区中的每一个和隔膜扇区的数量相同。 每个旋转中心部分可旋转地并同轴地支撑一个快门扇区和一个隔膜扇区。

公开(公告)号：US20020135902A1

公开(公告)日：2002-09-26

申请号：US10101963

申请日：2002-03-21

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G02B007/02

CPC classification number: G02B7/10

Abstract: A cam structure for a zoom lens barrel assembly which includes a first lens group including first and second sub-lens groups, and a second lens group; and a sub-lens group switching mechanism for moving one of the first and second sub-lens groups away from the other in a short focal length photographing range, and toward the other in a long focal length photographing range. The cam structure includes a zoom cam ring having front and rear lens group cam grooves for moving the first and second lens groups toward and away from each other. The front and rear lens group cam grooves are determined according to the following equation: CnullBnull(AnullB)nullK nullnull(1) wherein 0

Abstract translation: 一种用于变焦透镜镜筒组件的凸轮结构，其包括包括第一和第二子透镜组的第一透镜组和第二透镜组; 以及子透镜组切换机构，用于在短焦距拍摄范围内将第一和第二子透镜组中的一个远离另一个，并且在长焦距拍摄范围内朝向另一个移动。 凸轮结构包括变焦凸轮环，该变焦凸轮环具有前透镜组凸轮槽和后透镜组凸轮槽，用于使第一和第二透镜组朝向和远离彼此移动。 前后透镜组凸轮槽根据以下等式确定：<段落lvl =“0”> C = B +（AB）starfK（1）其中 0

公开(公告)号：US20020135897A1

公开(公告)日：2002-09-26

申请号：US10101618

申请日：2002-03-21

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Takamitsu Sasaki ,  Kazunori Ishizuka ,  Maiko Takashima

IPC: G02B007/02

CPC classification number: G02B7/102

Abstract: A zoom lens barrel assembly includes a first lens group including first and second sub-lens groups; a second lens group; a sub-lens group switching mechanism for moving the first or second sub-lens group away from the other in a short focal length photographing range, and toward the other in a long focal length photographing range; and a zoom cam mechanism having front and rear lens group cam grooves. The rear lens group cam groove includes first and second portions corresponding to the short and long focal length photographing ranges, respectively, the first and the second portions connected to each other via a discontinuous portion. The front lens group cam groove includes a non-linear portion which corresponds to the short focal length photographing range and provides a non-linear path, and a linear portion which corresponds to the long focal length photographing range and provides a linear path.

Abstract translation: 变焦镜头组件包括包括第一和第二子透镜组的第一透镜组; 第二透镜组; 子透镜组切换机构，用于在短焦距拍摄范围内使第一或第二子透镜组彼此远离，并且在长焦距拍摄范围内朝向另一个; 以及具有前透镜组凸轮槽和后透镜组凸轮槽的变焦凸轮机构。 后透镜组凸轮槽分别包括对应于短焦距拍摄范围的第一和第二部分，第一和第二部分分别经由不连续部分彼此连接。 前透镜组凸轮槽包括对应于短焦距拍摄范围并提供非线性路径的非线性部分和对应于长焦距拍摄范围并提供线性路径的直线部分。

公开(公告)号：US20020135887A1

公开(公告)日：2002-09-26

申请号：US10101836

申请日：2002-03-21

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Hiroshi Nomura ,  Yoshihiro Yamazaki ,  Isao Okuda ,  Satoru Nakamura

IPC: G02B015/14 ,  G02B015/22 ,  G02B007/02

CPC classification number: G02B7/10

Abstract: A lens barrel includes first and second lens groups guided in an optical axis direction without rotating about the optical axis, first and second support frames which support the first and second lens groups and include first and second cam followers, respectively; and a cam ring which is rotatable about the optical axis and includes a cam groove. The cam groove is formed as a continuous groove and includes first and second groove portions via which the first and second cam followers are guided to move the first and second lens groups, respectively. One of the first cam follower and the second cam follower enters one of the first groove portion and the second groove portion after passing through the other of the first groove portion and the second groove portion in a preparation stage of the lens barrel.

Abstract translation: 透镜镜筒包括在光轴方向上被引导而不围绕光轴旋转的第一透镜组和第二透镜组，分别支撑第一和第二透镜组并包括第一和第二凸轮从动件的第一和第二支撑框架; 以及可围绕光轴旋转并包括凸轮槽的凸轮环。 凸轮槽形成为连续的凹槽，并且包括第一和第二凹槽部分，第一和第二凸轮从动件通过该第一和第二凹槽部分分别被引导以移动第一和第二透镜组。 第一凸轮从动件和第二凸轮从动件中的一个在透镜筒的准备阶段中穿过第一凹槽部分和第二凹槽部分中的另一个之后进入第一凹槽部分和第二凹槽部分中的一个。