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公开(公告)号：US20190212562A1
公开(公告)日：2019-07-11
申请号：US16242552
申请日：2019-01-08
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Takashi TAKEDA , Shohei YOSHIDA
Abstract: A display device of the invention includes: an image generation part configured to generate image light; a light guide being configured to guide the image light; and an emitting part configured to cause the image light to emit from the light guide toward an exit pupil, in which the emitting part includes a plurality of half mirrors which are disposed parallel to one another at an interval, each of the plurality of half mirrors being configured to reflect a part of the image light and cause another part of the image light to pass through the half mirror, and in at least one half mirror of the plurality of half mirrors, when Bmax represents a maximum luminance, Bmin represents a minimum luminance, and a luminance ratio R (%) is defined as R=[(Bmax−Bmin)/Bmax]×100, R≤30 is satisfied.
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公开(公告)号：US20190196199A1
公开(公告)日：2019-06-27
申请号：US16229197
申请日：2018-12-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Shohei YOSHIDA , Takashi TAKEDA
Abstract: A light-guiding device according to an aspect of the invention includes an incident section configured to make light incident, a light guide configured to guide the light incident from the incident section, a bonding layer configured to bond the incident section and the light guide, and a reflection member provided on a side surface of the bonding layer.
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公开(公告)号：US20240328953A1
公开(公告)日：2024-10-03
申请号：US18621001
申请日：2024-03-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Fumika YAMADA , Yoshitaka ITO
IPC: G01N21/65
CPC classification number: G01N21/658
Abstract: An electric field enhancing element includes a substrate, a plurality of microstructures provided at the substrate and having conductivity, and a transparent layer covering the plurality of microstructures and the substrate. An enhanced electric field generated by the plurality of microstructures is at a maximum at a position on an opposite side of the plurality of microstructures from the substrate and separated from the plurality of microstructures, in a perpendicular line direction of the substrate.
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公开(公告)号：US20180284445A1
公开(公告)日：2018-10-04
申请号：US15923485
申请日：2018-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B6/002 , G02B6/003 , G02B2027/0118 , G02B2027/0125 , G02B2027/0145 , G02B2027/0178
Abstract: A light guide device used in a display apparatus includes a transparent light guide portion that guides light beams incident from one end side to a light-emitting portion. The light guide portion includes a plurality of partial reflection surfaces between a first surface and a second surface which are parallel to each other, the plurality of partial reflection surfaces being inclined at the same angle from a normal direction with respect to the second surface toward the one end side. In the plurality of partial reflection surfaces, an appropriate incident angle range of the partial reflection surface positioned on the one end side is set to a larger angle than that of the partial reflection surface positioned on another end side.
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公开(公告)号：US20180284443A1
公开(公告)日：2018-10-04
申请号：US15922175
申请日：2018-03-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B6/0001 , G02B6/002 , G02B6/0035 , G02B6/0045 , G02B6/4204 , G02B27/0955 , G02B2027/0125 , G02B2027/0178
Abstract: A display apparatus includes an image generation system that emits image light beams as non-parallel light beams, and a light guide system on which the image light beams emitted from the image generation system are incident without passing through a projection lens system. The light guide system includes a transparent light-incident portion that includes a light-incident surface on which the image light beams are incident and which is a curved surface, and a plurality of reflection surfaces which convert the image light beams incident from the light-incident surface into parallel light beams and are curved surfaces, and a transparent light guide portion of which one end side in a first direction is connected to the light-incident portion. In the light guide portion, the image light beams incident from the light-incident portion are reflected between a first surface and a second surface, and are guided to a light-emitting portion.
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Patent Agency Ranking
公开(公告)号：US20180348521A1
公开(公告)日：2018-12-06
申请号：US15990082
申请日：2018-05-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Kunihiko YANO , Koichi TAKEMURA , Shohei YOSHIDA
Abstract: A half mirror includes a silver layer and an anti-aggregation layer in contact with the silver layer. The anti-aggregation layer may be composed of ITO or IGO. Alternatively, the anti-aggregation layer may be composed of an organic molecular film having a thiol group. Alternatively, the anti-aggregation layer may be composed of an alloy including silver in an amount of 97% or more and an element X, in which the element X is any one of Au, Mg, Zn, Cu, Al, Si, Pd, Sn, Pt, Ti, and Cr.
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公开(公告)号：US20180088337A1
公开(公告)日：2018-03-29
申请号：US15703152
申请日：2017-09-13
Applicant: SEIKO EPSON CORPORATION
Inventor： Shohei YOSHIDA , Hayato MATSUKI
CPC classification number: G02B27/0172 , G02B6/002 , G02B6/003 , G02B6/0055 , G02B17/006 , G02B17/086 , G02B2027/0125 , G02B2027/0178
Abstract: An optical element includes a plurality of partially reflecting mirrors provided in parallel to each other with an interval therebetween, and a transmittance member interposed between adjacent two partially reflecting mirrors of the plurality of partially reflecting mirrors. The transmittance member has an incidence surface on which an image light and an external light are incident through a light guiding body, and an exit surface from which the image light and the external light are exited to an observer side. Each of the plurality of partially reflecting mirrors is disposed so as to be inclined with respect to the incidence surface and the exit surface, and a reflectance of light incident at a relatively small incidence angle with respect to surfaces of each partially reflecting mirror is lower than a reflectance of light incident at a relatively large incidence angle.
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公开(公告)号：US20170276957A1
公开(公告)日：2017-09-28
申请号：US15460882
申请日：2017-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Osamu YOKOYAMA
CPC classification number: G02B27/4227 , G02B5/1842 , G02B27/0172 , G02B27/4272 , G02B2027/0178
Abstract: In an optical element, a first diffraction grating, second diffraction grating, a third diffraction grating, and a fourth diffraction grating are formed in each of a first surface of a first substrate, a fourth surface of a second substrate, a fifth surface of a third substrate, and an eighth surface of a fourth substrate. Each substrate is fixed by (a first adhesive layer, second adhesive layer, and a third adhesive layer) adhesive layers including a gap material. A first filler with a refractive index equal to that of the first substrate and the second substrate is filled between the first substrate and the second substrate and a third filler formed of air or a medium with a refractive index equal to that of air is filled between the second substrate and the third substrate.
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公开(公告)号：US20170276945A1
公开(公告)日：2017-09-28
申请号：US15451812
申请日：2017-03-07
Applicant: SEIKO EPSON CORPORATION
Inventor： Shohei YOSHIDA , Hayato MATSUKI , Osamu YOKOYAMA
CPC classification number: G02B27/0172 , G02B6/002 , G02B6/0035 , G02B27/0081 , G02B27/142 , G02B27/145 , G02B2027/011 , G02B2027/012 , G02B2027/0125
Abstract: An optical element includes a plurality of partially reflecting surfaces which are provided in parallel to each other with intervals, reflect a portion of image light and external light, and transmit another portion of the image light or external light; and a light transmitting member which supports the plurality of partially reflecting surfaces, in which the light transmitting member includes an incident plane that enters the image light and the external light, and an emission plane that emits the image light and the external light, and each of the plurality of the partially reflecting surfaces is disposed so as to be inclined with respect to the incident plane and the emission plane, and has a plurality of regions having different reflectances in an inclination direction.
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公开(公告)号：US20210033756A1
公开(公告)日：2021-02-04
申请号：US16942557
申请日：2020-07-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI
Abstract: A wavelength converting element according to the present disclosure includes: a wavelength converting body including an incident surface and an exit surface and configured to perform wavelength conversion on a primary light in a first wavelength band, entered from the incident surface, thereby generating a secondary light in a second wavelength band, which differs from the first wavelength band, the wavelength converting body emitting the secondary light from the exit surface; a metallic antenna group provided in a close vicinity of the wavelength converting body and including a plurality of metallic antennas disposed so as to be spaced apart from each other at a distance of substantially an optical wavelength of the secondary light in the wavelength converting body; and a dielectric antenna group including a plurality of dielectric antennas and provided so as to face the exit surface of the wavelength converting body.
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