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公开(公告)号：US11520126B2
公开(公告)日：2022-12-06
申请号：US16905207
申请日：2020-06-18
Inventor： Takuya Imaoka , Hideo Onishi , Kenji Ikeo , Katsu Yamada
Abstract: A projection lens system projects an image of a reduction side into a magnification side in an image projection device, a back glass being disposed on the reduction side. In the projection lens system, all of one or more negative lenses that satisfy, in a surface on the reduction side or a surface on the magnification side, condition |h/H|
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公开(公告)号：US10073238B2
公开(公告)日：2018-09-11
申请号：US14922837
申请日：2015-10-26
Inventor： Kenji Ikeo , Tsutomu Yoshikawa , Masahiro Inata , Hideo Onishi
CPC classification number: G02B7/105 , G02B7/08 , G02B7/09 , G02B7/102 , G02B27/0006
Abstract: A lens barrel: an optical system; a focusing manipulation unit capable of changing a focal position of the optical system in a normal photographing area and in a macro photographing area where the focal position can be changed for an object located at a position shorter than a shortest distance position of the normal photographing area; a photographing mode switching unit for switching between a normal photographing mode and a macro photographing mode; and an index ring having a normal scale and a macro scale, the normal scale indicating an object distance in the normal photographing mode, and the macro scale indicating the object distance in the macro photographing mode. Then, the photographing mode switching unit switches a display position of the index ring between the normal scale and the macro scale, and the focusing manipulation unit changes the focal position displayed on the index ring by rotation manipulation.
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公开(公告)号：US09389390B2
公开(公告)日：2016-07-12
申请号：US14733973
申请日：2015-06-09
Inventor： Kenji Ikeo , Masahiro Inata , Hideo Onishi , Takayuki Hayashi
Abstract: An imaging device comprises an imaging optical system with a plurality of lenses, a focusing manipulation component, an imaging state switching manipulation component, and first, second, third, and fourth restrictors. The focusing manipulation component can be turned to change the focal position formed by the imaging optical system. The imaging state switching manipulation component can be turned to move lenses and switch between the first imaging state and the second imaging state. When the imaging state switching manipulation component is turned, the range over which the focusing manipulation component can be turned is switched from a first range that is restricted by first and second restrictors, to a second range that is restricted by third and fourth restrictors and that is at least partly shifted from the first range.
Abstract translation: 成像装置包括具有多个透镜的成像光学系统，聚焦操作部件，成像状态切换操作部件以及第一，第二，第三和第四限制器。 可以转动聚焦操作部件来改变由成像光学系统形成的焦点位置。 成像状态切换操作部件可以被转动以移动透镜并在第一成像状态和第二成像状态之间切换。 当成像状态切换操作部件转动时，聚焦操作部件可以转动的范围从受第一和第二限制器限制的第一范围切换到受第三和第四限制器限制的第二范围， 至少部分地从第一范围偏移。
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公开(公告)号：US10578826B2
公开(公告)日：2020-03-03
申请号：US15678690
申请日：2017-08-16
Inventor： Atsushi Hasegawa , Kenji Ikeo
Abstract: Lens barrel includes first group lens frame unit, second group lens frame unit, lens frame, insertion hole, and depressions. First group lens frame unit holds lenses. Second group lens frame unit holds lens. Lens frame is disposed between first group lens frame unit and second group lens frame unit on an inner circumference side of first group lens frame unit through radial clearance. Insertion hole is provided on an outer peripheral surface of first group lens frame unit, and a jig of lens frame is inserted into insertion hole. Depressions are provided at a position accessible from an outside in a state where first group, second group lens frame units and lens frame are assembled, and fix lens frame to first group lens frame unit.
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Patent Agency Ranking
公开(公告)号：US10520800B2
公开(公告)日：2019-12-31
申请号：US16129886
申请日：2018-09-13
Inventor： Kenji Ikeo
Abstract: A phosphor wheel includes a first face that has a phosphor layer, a second face located on an opposite side to the first face, a first blade provided to project from one of the first face and the second face, and a passage that sends air to the second face from the first face. The first blade is provided to send air on a side of the first face to a side of the second face through the passage during rotation of the phosphor wheel.
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公开(公告)号：US09372323B2
公开(公告)日：2016-06-21
申请号：US14735163
申请日：2015-06-10
Inventor： Kenji Ikeo , Masahiro Inata , Hideo Onishi , Takayuki Hayashi
Abstract: Embodiments of a lens barrel may comprise an imaging optical system with a plurality of lenses, a cylindrical focusing manipulation component, a stationary frame, and a restrictor. The focusing manipulation component changes the focal position of the imaging optical system by turning operation around the optical axis of the imaging optical system and to set the distance up to a second imaging region that is at least partially different from a first imaging region, and to move at least some of the lenses of the imaging optical system to switch between first and second imaging states. The restrictor restricts the rotatable range of the focusing manipulation component. When the focusing manipulation component is turned, its rotatable range is switched from a first rotatable range to a second rotatable range.
Abstract translation: 镜筒的实施例可以包括具有多个透镜的成像光学系统，圆柱形聚焦操作部件，固定框架和限制器。 聚焦操作部件通过围绕成像光学系统的光轴转动操作来改变成像光学系统的焦点位置，并将距离设置为至少部分地不同于第一成像区域的第二成像区域，并且将距离设置为 移动成像光学系统的至少一些透镜以在第一和第二成像状态之间切换。 限制器限制聚焦操作部件的可旋转范围。 当聚焦操作部件转动时，其可旋转范围从第一可旋转范围切换到第二可旋转范围。
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公开(公告)号：US11513325B2
公开(公告)日：2022-11-29
申请号：US16905745
申请日：2020-06-18
Inventor： Takuya Imaoka , Hideo Onishi , Kenji Ikeo , Katsu Yamada
Abstract: A projection lens system that projects an image of a reduction side into a magnification side includes a diaphragm, a plurality of positive lenses, and a plurality of negative lenses. The plurality of positive lenses include a first positive lens closer to the magnification side than the diaphragm is and closest to the diaphragm, a second positive lens second closest to the diaphragm after the first positive lens on the magnification side, a third positive lens closer to the reduction side than the diaphragm is and closest to the diaphragm. The plurality of negative lenses include a first negative lens closer to the magnification side than the diaphragm is and closest to the diaphragm, and a second negative lens closer to the reduction side than the diaphragm is and closest to the diaphragm. The lenses have transmittances larger than threshold values, respectively.
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公开(公告)号：US20200319434A1
公开(公告)日：2020-10-08
申请号：US16905745
申请日：2020-06-18
Inventor： Takuya Imaoka , Hideo Onishi , Kenji Ikeo , Katsu Yamada
Abstract: A projection lens system that projects an image of a reduction side into a magnification side includes a diaphragm, a plurality of positive lenses, and a plurality of negative lenses. The plurality of positive lenses include a first positive lens closer to the magnification side than the diaphragm is and closest to the diaphragm, a second positive lens second closest to the diaphragm after the first positive lens on the magnification side, a third positive lens closer to the reduction side than the diaphragm is and closest to the diaphragm. The plurality of negative lenses include a first negative lens closer to the magnification side than the diaphragm is and closest to the diaphragm, and a second negative lens closer to the reduction side than the diaphragm is and closest to the diaphragm. The lenses have transmittances larger than the respective lower limit values.
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公开(公告)号：US10088739B2
公开(公告)日：2018-10-02
申请号：US15454188
申请日：2017-03-09
Inventor： Kenji Ikeo
Abstract: A cooling device is adapted to cool a DMD including a reflection surface and a support frame for supporting the outer edge of the reflection surface, and includes first and second contact portions and a water cooling pump. The first and second contact portions each have a contact surface that is brought into contact with a side surface in a direction transverse the reflection surface at the support frame. The water cooling pump is connected to the first and second contact portions so as to cool the first and second contact portions.
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