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公开(公告)号：US20220137406A1
公开(公告)日：2022-05-05
申请号：US17513623
申请日：2021-10-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Tokito YAMAGUCHI , Mitsutaka IDE
Abstract: An optical unit includes a projection lens, a prism configured to guide the image light from the projection lens, and a mirror member configured to reflect, toward a pupil position, the image light from the prism, wherein the prism includes a first surface where the image light from the projection lens is incident while being transmitted, a second surface at which the image light that passed through the first surface is reflected, and a third surface at which the image light that passed through the second surface is reflected toward the second surface, and the image light reflected at the third surface is emitted while being transmitted through the second surface.
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公开(公告)号：US20210063752A1
公开(公告)日：2021-03-04
申请号：US17004891
申请日：2020-08-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Masayuki TAKAGI , Toshiaki MIYAO , Tokito YAMAGUCHI , Mitsutaka IDE
IPC: G02B27/01
Abstract: A virtual image display apparatus includes a display element, an optical element configured to pass therethrough image light emitted from the display element, a reflecting mirror configured to reflect the image light emitted from the optical element, a see-through hologram mirror of a see-through type configured to reflect the image light, emitted from the reflecting mirror, to a pupil position, and a linear diffraction element of a transmissive type arranged on an optical path from the optical element to the hologram mirror. The optical element, the reflecting mirror, and the see-through hologram mirror are arranged to form an off-axis system, and the linear diffraction element compensates wavelength dispersion caused by the see-through hologram mirror at an off-axis surface of the off-axis system.
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公开(公告)号：US20200310131A1
公开(公告)日：2020-10-01
申请号：US16827873
申请日：2020-03-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Mitsutaka IDE , Masatoshi YONEKUBO
Abstract: A display device according to the present disclosure includes a first optical unit having positive power, a second optical unit including a first diffraction element and having positive power, a third optical unit having positive power, and a fourth optical unit including a second diffraction element and having positive power, and the first to fourth optical units are provided along an optical path of imaging light emitted from an imaging light generating device. The second optical unit further includes a first member provided at one surface side of the first diffraction element, and a second member provided on a side of the first member opposite to a side where the first diffraction element is located, the first member is transmissive and has an elastic modulus of 50 GPa or greater, and the second member is transmissive and has optical power.
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公开(公告)号：US20190293940A1
公开(公告)日：2019-09-26
申请号：US16357669
申请日：2019-03-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Mitsutaka IDE , Akira KOMATSU , Masayuki TAKAGI , Toshiaki MIYAO , Tokito YAMAGUCHI
IPC: G02B27/01
Abstract: Image formation is performed by using a synthesis optical system, and in a first dichroic film and a second dichroic film that are the synthesis surfaces in the synthesis optical system, a direction in which the cross axis that is the intersecting axis extends corresponds to a direction of alignment of eyes of an observer.
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公开(公告)号：US20190049735A1
公开(公告)日：2019-02-14
申请号：US16165221
申请日：2018-10-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA , Masatoshi YONEKUBO , Takashi TAKEDA , Daisuke ISHIDA , Mitsutaka IDE , Hidemitsu SORIMACHI
Abstract: An image display device with which it is possible to visually recognize an image while securing the see-through property regardless of eye movements and changes in interpupillary distance, with which it is possible to display a large-size image with high quality, and which is small, has excellent wearability, and has an excellent external appearance.
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Patent Agency Ranking
公开(公告)号：US20170106675A1
公开(公告)日：2017-04-20
申请号：US15129233
申请日：2015-03-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Tomoya MUROTANI , Mitsutaka IDE , Hiroyuki KOBAYASHI , Hideyuki KATAOKA
IPC: B41J13/00
CPC classification number: B41J13/0009 , B41J11/0085 , B41J11/009 , B41J11/0095 , B41J11/06 , B65H26/02 , B65H2301/51214 , B65H2404/143 , B65H2404/61 , B65H2515/112 , B65H2553/414 , B65H2701/172 , B65H2701/173 , B65H2701/174 , B65H2801/15 , B65H2220/03
Abstract: A printer includes a transport unit that transports continuous paper (P), a medium support unit (20) in which a support surface (20a) that is capable of supporting continuous paper (P) that is transported by a transport unit, and first concave sections (24A and 24B), which are indented from the support surface (20a), are formed, and an image capture unit, which is disposed on a lower side of the support surface (20a), and which captures an image of a lower surface of the continuous paper (P).
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公开(公告)号：US20150165796A1
公开(公告)日：2015-06-18
申请号：US14634202
申请日：2015-02-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Takahiro ABE , Mitsutaka IDE
IPC: B41J13/00
CPC classification number: B41J13/0009 , B41J11/0095 , B41J11/42 , B41J15/04 , B65H7/00 , B65H7/02 , G01N21/86 , H04N1/00838 , H04N1/0476 , H04N1/1215 , H04N1/23
Abstract: A transportation device includes: a transportation section that transports a continuous paper; and an imaging unit that detects a transportation amount of the continuous paper which is transported by the transportation section. The imaging unit includes a lens barrel; a light irradiation unit disposed in the lens barrel and capable of radiating light on the continuous paper; a condensing lens which is disposed in a position farther than the light irradiation section with respect to the continuous paper in the lens barrel and condenses a reflected light when the light is radiated from the light irradiation section to the continuous paper; and an imaging element which is disposed in a position farther than the condensing lens with respect to the continuous paper P in the lens barrel and captures an image by receiving the reflected light condensed by the condensing lens.
Abstract translation: 运输装置包括：输送连续纸的运输部; 以及摄像单元，其检测由所述运送部输送的连续纸的输送量。 成像单元包括镜筒; 光照射单元，其设置在所述镜筒中并能够在所述连续纸上照射光; 聚光透镜相对于透镜镜筒中的连续纸设置在比光照射部分更远的位置，并且当光从光照射部分辐射到连续纸时会聚合反射光; 以及成像元件，其相对于透镜镜筒中的连续纸P设置在比聚光透镜更远的位置，并且通过接收由聚光透镜聚光的反射光捕捉图像。
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公开(公告)号：US20250138321A1
公开(公告)日：2025-05-01
申请号：US18923708
申请日：2024-10-23
Applicant: SEIKO EPSON CORPORATION
Inventor： Katsutoshi INOMOTO , Mitsutaka IDE , Takashi TAKEDA
Abstract: A virtual-image display device or an optical unit includes a first display device configured to output image light of circularly polarized light; a first reflection member having a flat surface and configured to reflect the image light to a diagonal direction; and a second reflection member having a positive power and configured to reflect, toward the first reflection member, the image light reflected at the first reflection member. The first reflection member includes a first optical function layer that is one of a cholesteric liquid crystal layer and a transmissive reflection layer. The second reflection member includes a second optical function layer that is the other one of the cholesteric liquid crystal layer and the transmissive reflection layer.
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公开(公告)号：US20240061208A1
公开(公告)日：2024-02-22
申请号：US18451825
申请日：2023-08-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Hitoshi OTA , Yuiga HAMADE , Mitsutaka IDE
IPC: G02B7/14
CPC classification number: G02B7/14
Abstract: An optical display device includes an image display element configured to emit image light, a deflection member configured to deflect the image light emitted from the image display element, an optical device including a lens barrel for accommodating a lens group including an objective lens and an eyepiece, and a moving mechanism provided at the lens barrel of the optical device and configured to hold a state in which at least the deflection member is moved in a direction intersecting an optical axis of the lens group.
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公开(公告)号：US20230314812A1
公开(公告)日：2023-10-05
申请号：US18192185
申请日：2023-03-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Mitsutaka IDE
CPC classification number: G02B27/0172 , G02B5/3025 , G02B2027/0178
Abstract: A display device includes: a first self-light-emitting panel; a second self-light-emitting panel; a cross dichroic prism configured to cause first image light and second image light to exit as image light of combined light, the first image light exiting from the first self-light-emitting panel and entering, the second image light exiting from the second self-light-emitting panel and entering; a first polarizing plate provided at an exit side of the first self-light-emitting panel; a second polarizing plate provided at an exit side of the second self-light-emitting panel; and a light-guiding optical system including a polarizing mirror and configured to deflect the image light of the combined light. Polarizing axes of the first polarizing plate and the second polarizing plate and a polarizing axis of the polarizing mirror are perpendicular to or parallel to an intersecting axis of the cross dichroic prism.
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