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公开(公告)号：US11921407B2
公开(公告)日：2024-03-05
申请号：US17579706
申请日：2022-01-20
发明人： Naoto Takehana , Hirofumi Okubo , Kosho Kamijo
CPC分类号： G03B21/142 , G02B7/023 , G02B27/62 , G03B21/145
摘要： A fixing device that fixes, to a light emitting device that emits light, a lens barrel included in a projection optical device and holding a plurality of lenses includes a first tube member, a contact section provided on an outer side of the first tube member and in contact with a holding section included in the light emitting device, and a pressing mechanism provided to be opposed to the contact section and configured to press the holding section toward the contact section when the fixing device is attached to the light emitting device.
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公开(公告)号：US20170205699A1
公开(公告)日：2017-07-20
申请号：US15407608
申请日：2017-01-17
发明人： Hirofumi Okubo , Kazunori Maeta , Akira Nemura
CPC分类号： G03B21/2073 , G01B11/26 , G01B11/272 , G02B7/00 , G02B26/06 , G02B27/283 , G03B21/204 , G03B2205/0053 , H04N9/3105 , H04N9/3158 , H04N9/3167 , H04N9/3194
摘要： A position detection device includes: a sensor that includes a light emission unit and a light reception unit receiving light emitted from the light emission unit; a driving unit; a gear (transmission gear) that is disposed at a position facing the sensor and is rotated by power from the driving unit; and a control unit that drives the driving unit based on an amount of light received by the light reception unit and detected by the sensor.
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3.发明授权公开(公告)号：US12072615B2
公开(公告)日：2024-08-27
申请号：US17563216
申请日：2021-12-28
发明人： Hirofumi Okubo , Naoto Takehana , Kosho Kamijo
CPC分类号： G03B21/145 , G03B21/28 , G02B7/021 , G02B17/08
摘要： A projection optical apparatus is removably installed in a light emitting apparatus and projects light emitted from the light emitting apparatus. The projection optical apparatus includes a plurality of lenses, a lens barrel holding the plurality of lenses, and a first grip extending outward from the exterior of the lens barrel.
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公开(公告)号：US11415868B2
公开(公告)日：2022-08-16
申请号：US16906540
申请日：2020-06-19
发明人： Hirofumi Okubo
摘要： A projection optical apparatus includes a first lens group, a first lens barrel holding the first lens group, a first optical path deflector disposed at a demagnifying side of the first lens group, a resin frame holding the first optical path deflector and including a first opening in which the first lens barrel is fitted, and a first reinforcing member disposed around an outer circumference of the first opening.
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公开(公告)号：US11019313B2
公开(公告)日：2021-05-25
申请号：US16909090
申请日：2020-06-23
发明人： Hirofumi Okubo
摘要： A projection optical apparatus includes a first lens group including a first optical axis, a first optical path deflector, a second optical path deflector, a second lens group including a second optical axis, a first lens barrel, a second lens barrel and a frame. The frame includes a frame main body and a cover frame. The frame main body includes a lens barrel attachment part including first and second openings, and first and second side parts facing each other and extending in a direction along a plane containing the first optical axis and a third optical axis between the first optical path deflector and the second optical path deflector. The cover frame is disposed at an opposite side to a lens barrel attachment part side with respect to the first and second optical path deflectors, and includes an outer circumferential part fixed to the the first and second side parts.
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公开(公告)号：US10942327B2
公开(公告)日：2021-03-09
申请号：US16360299
申请日：2019-03-21
发明人： Hirofumi Okubo
摘要： A centering pin pushes an inclining surface provided as part of a side section of a lens frame that accommodates a centering target lens that is a centering target lens group to allow the centering target lens to move in a centering direction. In this process, an end surface of the lens frame is always urged against a reference surface that positions the lens frame attached to an attachment section of a lens barrel in the optical axis direction.
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公开(公告)号：US09933695B2
公开(公告)日：2018-04-03
申请号：US15407608
申请日：2017-01-17
发明人： Hirofumi Okubo , Kazunori Maeta , Akira Nemura
IPC分类号： G03B21/14 , G01B11/00 , G03B21/20 , G02B26/06 , H04N9/31 , G01B11/26 , G01B11/27 , G02B7/00 , G02B27/28
CPC分类号： G03B21/2073 , G01B11/26 , G01B11/272 , G02B7/00 , G02B26/06 , G02B27/283 , G03B21/204 , G03B2205/0053 , H04N9/3105 , H04N9/3158 , H04N9/3167 , H04N9/3194
摘要： A position detection device includes: a sensor that includes a light emission unit and a light reception unit receiving light emitted from the light emission unit; a driving unit; a gear (transmission gear) that is disposed at a position facing the sensor and is rotated by power from the driving unit; and a control unit that drives the driving unit based on an amount of light received by the light reception unit and detected by the sensor.
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