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公开(公告)号：US20220137414A1
公开(公告)日：2022-05-05
申请号：US17512698
申请日：2021-10-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA
Abstract: A display device includes an image element, a prism mirror configured to cause imaging light emitted from the image element to be incident on a light incident surface, to reflect the imaging light by an inner reflection surface, and to emit the imaging light from a light emission surface, thereby emitting the imaging light so that the imaging light is returned in an inclined direction, a see-through mirror configured to reflect the imaging light emitted from the prism mirror toward a pupil position, and a basic aperture diaphragm configured to limit the passage of the imaging light incident on the light incident surface of the prism mirror.
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公开(公告)号：US20220128826A1
公开(公告)日：2022-04-28
申请号：US17512092
申请日：2021-10-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiyuki NOGUCHI , Takashi TAKEDA
IPC: G02B27/01
Abstract: An optical module according to the present disclosure includes a display element, a first optical member, a second optical member, a third optical member, and an adhesive joints the first optical member and the second optical member. A first optical member includes a first positioning portion that performs a positioning with respect to a second optical member and the second optical member includes a second positioning portion that performs a positioning with respect to the first optical member.
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公开(公告)号：US20210397006A1
公开(公告)日：2021-12-23
申请号：US17464308
申请日：2021-09-01
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Akira KOMATSU , Takashi TAKEDA , Toshiaki MIYAO , Tokito YAMAGUCHI
IPC: G02B27/01
Abstract: A head-mounted display includes a display device configured to display an image, a diopter adjustment device configured to adjust a diopter, and a correction processing circuit serving as an image correction device configured to correct a display image in accordance with a degree of diopter adjustment. In the adjustments made on a left side and a right side, respectively, after diopter adjustment, the display image is corrected in accordance with the degree of diopter adjustment.
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公开(公告)号：US20210302754A1
公开(公告)日：2021-09-30
申请号：US17218200
申请日：2021-03-31
Applicant: SEIKO EPSON CORPORATION
Inventor： Daiki MATSUMOTO , Masatoshi YONEKUBO , Takashi TAKEDA
Abstract: A virtual image display device is provided. Included in the virtual image display device are: an image light generating device; a projection optical system configured to project image light emitted from the image light generating device; a folding mirror configured to reflect, in an intersecting direction, the image light from the projection optical system; a semi-transmissive mirror configured to reflect a portion of the image light from the folding mirror; a concave surface mirror configured to reflect, toward the semi-transmissive mirror, the image light reflected at the semi-transmissive mirror to form an exit pupil, in which an entrance pupil is formed between the projection optical system and the semi-transmissive mirror.
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公开(公告)号：US20210239987A1
公开(公告)日：2021-08-05
申请号：US17161676
申请日：2021-01-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Masatoshi YONEKUBO , Mitsutaka IDE , Takashi TAKEDA
IPC: G02B27/01
Abstract: A display module includes an image light generation device, a light-guiding member, a first reflection surface configured to reflect the imaging light incident via the light-guiding member, a first diffraction element configured to diffract the imaging light, and a second diffraction element configured to diffract the image light and form an exit pupil. The image light is sequentially incident on a first deflection surface, a second deflection surface, a second reflection surface, a third reflection surface, a fourth reflection surface, and a third deflection surface inside the light-guiding member, and a distance from a reference position where an optical axis of the exit pupil and an emission surface intersect to the second deflection surface is longer than a distance from the reference position to the first deflection surface and longer than a distance from the reference position to the second reflection surface.
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Patent Agency Ranking
公开(公告)号：US20210063749A1
公开(公告)日：2021-03-04
申请号：US17004099
申请日：2020-08-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Masayuki TAKAGI , Toshiaki MIYAO , Tokito YAMAGUCHI
Abstract: A virtual image display apparatus includes a display element, a projection lens configured to converge image light emitted from the display element, a prism configured to cause the image light by an internal reflecting surface thereof and moreover emit the image light from an emission surface thereof while refracting the image light, and a see-through mirror configured to reflect the image light emitted from the prism toward a pupil position. The projection lens, the prism, and the see-through mirror are arranged to form an off-axis system. AT an off-axis surface of the off-axis system, an intermediate pupil is arranged between the projection lens and the internal reflecting surface, with the intermediate pupil being arranged to be farther to the incident surface sidfe of the prism than to the projection lens and the internal reflecting surface, and an intermediate image is formed between the prism and the see-through mirror.
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公开(公告)号：US20200174258A1
公开(公告)日：2020-06-04
申请号：US16699178
申请日：2019-11-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiaki MIYAO , Masayuki TAKAGI , Takashi TAKEDA , Tokito YAMAGUCHI
Abstract: A light-guiding device includes a pair of light-guiding portions, a pair of light-incident portions that causes image light to be incident on the respective pair of light-guiding portions, and a pair of light-emitting portion that causes image light guided by the respective pair of light-guiding portions to exit outside, in which a pair of optical members including the pair of light-guiding portions are coupled by a central member having light transmissivity, and in which the central member includes a light-guide blocking structure that suppresses light from being incident from one end to another end of the central member by absorbing the light.
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公开(公告)号：US20200133004A1
公开(公告)日：2020-04-30
申请号：US16666515
申请日：2019-10-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Takeshi KOSHIHARA , Masatoshi YONEKUBO , Mitsutaka IDE
Abstract: A head-mounted display apparatus according to the present disclosure includes an image generating module, a first deflecting element including a first deflecting portion configured to deflect, along a second optical axis intersecting the first optical axis, imaging light from the image generating module, and a second deflecting portion configured to deflect the imaging light along a third optical axis, a first diffraction element configured to diffract the imaging light from the second deflecting portion, and a second diffraction element configured to diffract the imaging light from the first diffraction element. A distance along the first optical axis between the image generating module and the first deflecting portion is longer than a distance along the third optical axis between the first diffraction element and the second deflecting portion.
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公开(公告)号：US20200041785A1
公开(公告)日：2020-02-06
申请号：US16533136
申请日：2019-08-06
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Akira KOMATSU , Takashi TAKEDA , Toshiaki MIYAO , Tokito YAMAGUCHI
Abstract: A virtual image display device includes an image element configured to display an image, a first lens disposed in an extraction position of image light and including at the image element side thereof a convex surface, a second lens disposed further toward the image element side than the first lens and including a concave surface bonded to the convex surface of the first lens, a half mirror provided in a bonding portion for bonding together the convex surface and the concave surface, a transmission/reflection selection member provided at a light emitting side of the first lens and configured to selectively perform transmission or reflection of the light depending on a polarization state of the light, and a light-guiding portion keeping close contact between the image element and the second lens and configured to guide the image light.
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公开(公告)号：US20200033606A1
公开(公告)日：2020-01-30
申请号：US16524241
申请日：2019-07-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Masayuki TAKAGI , Toshiaki MIYAO , Tokito YAMAGUCHI
Abstract: A virtual image display apparatus includes a display device (image forming unit), a lens configured to refract imaging light from the display device, a first mirror member configured to reflect imaging light that passed through the lens, a second mirror member being a refractive reflective optical member configured to reflect the imaging light reflected by the first mirror member, and a third mirror member of a transmissive type configured to reflect the imaging light reflected by the second mirror member toward a position of an exit pupil. The refractive reflective optical member includes, across a refractive member, a refractive surface and a mirror surface. The lens and the refractive reflective optical member are integrated as a composite member.
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