JP7076963B2 - 医用画像診断装置 - Google Patents
医用画像診断装置 Download PDFInfo
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Description
本実施形態に係る医用画像診断装置10によれば、医用撮像機構を装備する架台11に形成されたボア53内を移動可能な移動体61に設けられ、映写機100からの映像がボア53への天板131の挿入側とは反対側から投影されるスクリーン63と、移動体61に設けられスクリーン63に投影された映像を反射する反射板67を支持するフレーム65と、を有し、反射板67は、ボア53内における天板131の移動方向を反射板67に投影した1次元方向PDに沿って複数のプリズム671を配列した構造(1次元的なマルチプリズム構造)を有する。
本実施形態との相違は、反射板67において反射された映像を拡大する拡大機能を、反射板67に付加することにある。本応用例における複数のプリズム671は、反射板67の基材673において、反射板67の裏面側に設けられる。拡大機能は、反射板67の基材673において、反射板67の表面側に光学的なパワーまたはフレネルレンズを設けることで実現される。ここで、光学的なパワーとはレンズの焦点距離の逆数に相当し、本応用例では、天板131側を凸部とするレンズにおける「度(ジオプトリー:diopter)」に対応する。以下、反射板67における拡大機能に関する構造について説明する。
本実施形態の応用例に係る医用画像診断装置10によれば、反射板67において、スクリーン63に投影された映像に関する光が反射板67に入射する入射面に凸レンズを形成し、この入射面に対向する対向面に複数のプリズム671を形成することができる。また、本応用例によれば、反射板67において、スクリーン63に投影された映像に関する光が反射板67に入射する入射面にフレネルレンズを形成し、この入射面に対向する対向面には複数のプリズム671を形成することができる。
Claims (10)
- ボアが形成され、医用撮像機構を装備する架台と、
前記ボア内を移動可能な移動体と、
前記移動体に設けられ、曲面形状を有し、映写機からの映像が前記ボアへの天板の挿入側とは反対側から投影されるスクリーンと、
前記スクリーンの凸面側に投影され、前記スクリーンの凹面側に映し出された映像を直接入射し、入射した光を反射する反射部と、
前記移動体に設けられ、前記反射部を支持するフレームと、
を具備し、
前記反射部は、複数のプリズムを輪帯ではなく1次元方向に沿って配列した構造を有し、
前記複数のプリズムは、前記光を前記複数のプリズムの表面で反射させる、
医用画像診断装置。 - 前記1次元方向は、前記ボア内における前記天板の移動方向を前記反射部に投影させた方向である、
請求項1に記載の医用画像診断装置。 - 前記複数のプリズム各々は、
前記1次元方向とは異なる方向に沿って延伸し、
前記反射部における前記1次元方向に湾曲する、
請求項1または2に記載の医用画像診断装置。 - 前記1次元方向への湾曲の程度は、前記複数のプリズムにおいてそれぞれ異なる、
請求項3に記載の医用画像診断装置。 - 前記複数のプリズム各々において、水平面に対するプリズム面の傾斜角度は、前記水平面に対する前記反射部の傾斜角度より大きい、
請求項1乃至4のうちいずれか一項に記載の医用画像診断装置。 - 前記プリズム面の傾斜角度は、前記複数のプリズムにおいてそれぞれ異なる、
請求項5に記載の医用画像診断装置。 - 前記複数のプリズムのうち隣接する2つのプリズムの間隔はそれぞれ異なる、
請求項1乃至6のうちいずれか一項に記載の医用画像診断装置。 - 前記間隔は、0.5mm以下である、
請求項7に記載の医用画像診断装置。 - 前記複数のプリズムは、前記反射部において、前記映像に関する光が前記反射部に入射する入射面側に設けられる、
請求項1乃至8のうちいずれか一項に記載の医用画像診断装置。 - 前記複数のプリズムは、プリズムミラーにより構成される、
請求項1乃至9のうちいずれか一項に記載の医用画像診断装置。
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US16/045,209 US11918396B2 (en) | 2017-08-01 | 2018-07-25 | Medical imaging apparatus |
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EP3816646A1 (en) * | 2019-10-28 | 2021-05-05 | Koninklijke Philips N.V. | Monitoring system with a camera and non-metallic mirror for magnetic resonance examination system |
CN116322502A (zh) * | 2020-09-27 | 2023-06-23 | 中加健康工程研究院(合肥)有限公司 | 成像插件设备 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008064911A (ja) | 2006-09-06 | 2008-03-21 | Kuraray Co Ltd | 投写型表示装置及びプリズムミラー |
JP2016202514A (ja) | 2015-04-21 | 2016-12-08 | 株式会社東芝 | 表示装置、および医用画像診断装置 |
JP2017026866A (ja) | 2015-07-24 | 2017-02-02 | 株式会社東芝 | 表示装置 |
JP2017080298A (ja) | 2015-10-30 | 2017-05-18 | 東芝メディカルシステムズ株式会社 | 医用画像診断装置及び磁気共鳴イメージング装置 |
JP2017093949A (ja) | 2015-11-27 | 2017-06-01 | 東芝メディカルシステムズ株式会社 | 磁気共鳴イメージング装置 |
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US11918396B2 (en) | 2024-03-05 |
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