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公开(公告)号：US11632528B2
公开(公告)日：2023-04-18
申请号：US17244119
申请日：2021-04-29
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu , Takeharu Omata
Abstract: An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of a projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; a control unit; and a projection lens attached to the housing, the projection lens having a holder, a detection unit that detects a rotation state of the holder, and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. The locking mechanism unit does not bring rotation of the holder into the locked state when a rotation state of the holder is other than a specific state. The specific state is a rotation state in which the locking mechanism unit is capable of bringing rotation of the holder into the locked state. When rotation of the holder is not brought into the locked state, the control unit disables an operation relating to the locked state or an operation of turning off the power supply.
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公开(公告)号：US11480856B2
公开(公告)日：2022-10-25
申请号：US17244459
申请日：2021-04-29
Applicant: FUJIFILM Corporation
Inventor： Tetsuo Kamigaki , Hitoshi Shimizu , Yasuto Kuroda , Hironobu Kayano
Abstract: There is provided a projection lens that is mounted on a housing of a projection device including an electro-optical element. The projection lens includes a first holding frame through which light emitted from the housing passes, a second reflective part that refracts an optical axis of light emitted from the first holding frame and includes a pair of side surfaces facing each other, and a second holding frame that holds the second reflective part and includes a pair of first holes provided at positions corresponding to the pair of side surfaces; and each of the pair of side surfaces has a gap between itself and the second holding frame.
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公开(公告)号：US11429017B2
公开(公告)日：2022-08-30
申请号：US17243761
申请日：2021-04-29
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu , Takeharu Omata
Abstract: An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of the projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; and a projection lens attached to the housing, the projection lens having a holder and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. Rotation of the holder is in the locked state when the power supply has been turned on. With the first aspect, since the power is turned on in a state in which the projection lens is not rotatable, the locked state can be safely unlocked by user's intention and the holder can be rotated.
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Patent Agency Ranking
公开(公告)号：US11320729B2
公开(公告)日：2022-05-03
申请号：US17142021
申请日：2021-01-05
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu
Abstract: A projection apparatus having a light modulation element includes a main body; an optical unit that is rotatably supported by the main body and includes a projection optical system for projecting the spatially modulated light onto the projection surface, a first rotation member rotatably supported to the main body and a second rotation member rotatably supported to the first rotation member; a first sensor; a second sensor; a controller; and a regulation mechanism, and the regulation mechanism includes a moving member that is movable between a regulation position for regulating the rotation and a regulation release position for releasing the regulating of the rotation, and fixes the moving member at the regulation position in a case where the controller determines that the first rotation member and the second rotation member are in the predetermined specific rotation state.
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公开(公告)号：US09992458B2
公开(公告)日：2018-06-05
申请号：US15695700
申请日：2017-09-05
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu
CPC classification number: H04N9/31 , G02B7/021 , G02B7/023 , G02B7/028 , G02B9/60 , G02B26/008 , G03B21/142 , G03B21/147 , G03B21/16 , G03B21/2093 , H04N5/74 , H04N9/3114
Abstract: A projection lens has a lens barrel holding a lens. In a case where an image forming panel is disposed to be shifted with respect to an optical axis of the projection lens, in a second part on a side to which the image forming panel is shifted with respect to the optical axis of the projection lens, there is a great increase in temperature, and in a first part on the opposite side, there is a small increase in temperature. A lens barrel heating optical section has a first mirror, condensing lenses, and a second mirror. The lens barrel heating optical section emits the redundant light, which is reflected by the color wheel, toward the first part of the lens barrel. By heating the first part through redundant light, temperature distribution in the circumferential direction becomes uniform, and deterioration in performance of the projected image is suppressed.
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公开(公告)号：US12111314B2
公开(公告)日：2024-10-08
申请号：US17720774
申请日：2022-04-14
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Yoshihiro Seto , Hitoshi Shimizu , Takahiro Miyato
IPC: G01N33/543 , G01N21/51 , G01N21/59
CPC classification number: G01N33/54373 , G01N21/51 , G01N21/59
Abstract: A test device includes a specimen having a circular cross section that accommodates a test target, a specimen holding part that holds a plurality of the specimens in a row, light emitting elements in which light is incident on two adjacent specimens among the plurality of specimens, a first light guide path 46 that guides light emitted by the light emitting elements, and a second light guide path that is formed to have a smaller diameter than a diameter of the first light guide path and that guides the light emitted by the light emitting elements from the first light guide path to the specimen.
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公开(公告)号：US10042138B2
公开(公告)日：2018-08-07
申请号：US15696815
申请日：2017-09-06
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu
Abstract: A projection lens has lens holding frames that hold lenses. In a case where an image forming panel is disposed to be shifted with respect to an optical axis of the projection lens, an increase in temperature of a first part on a side to which the image forming panel is shifted with respect to the optical axis L, is greater than that of a second part on the opposite side. A hollow structure, which makes the first part 36f and the second part 36g communicate with each other, has a porous layer and is filled with a heat storage medium. By circulating the heat storage medium through the inside of the hollow structure, the first part is cooled, and the second part is heated. Therefore, temperature distribution in the circumferential direction of the lens barrel becomes uniform, and deterioration in performance of the projected image is suppressed.
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公开(公告)号：US09904153B2
公开(公告)日：2018-02-27
申请号：US15632839
申请日：2017-06-26
Applicant: FUJIFILM Corporation
Inventor： Hitoshi Shimizu
CPC classification number: G03B21/142 , G02B13/04 , G02B13/16
Abstract: A projection unit has a zoom adjustment unit, an image-plane correction unit, a first drive unit, and a solenoid-actuator. The zoom adjustment unit enlarges or reduces a projected-image by moving a first lens group in a K direction. The image-plane correction unit performs image-plane correction on the projected-image by moving a second lens group in the K direction. The first drive unit includes a switching-gear, drives the zoom adjustment unit in a state in which the switching-gear is connected to the zoom adjustment unit, and drives the image-plane correction unit in a state in which the switching-gear is connected to the image-plane correction unit. In a case of driving one of the zoom adjustment unit and the image-plane correction unit, the solenoid-actuator switches the switching-gear from the other of the zoom adjustment unit and the image-plane correction unit to one of the zoom adjustment unit and the image-plane correction unit.
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