公开(公告)号：US20250031517A1

公开(公告)日：2025-01-23

申请号：US18909039

申请日：2024-10-08

Applicant: SEIKO EPSON CORPORATION

Inventor： Osamu YOKOYAMA ,  Takeshi Koshihara ,  Mitsutaka IDE

IPC: H10K50/858 ,  H10K59/35 ,  H10K59/38

Abstract: A display device of the present disclosure includes a substrate, a lens layer including a lens, a light-transmitting layer that contacts a lens surface of the lens, and has translucency, a pixel electrode disposed between the substrate and the lens layer, and a color filter disposed between the pixel electrode and the lens layer. The lens is disposed so as to correspond to the pixel electrode. A refractive index of a constituent material for the lens is lower than a refractive index of a constituent material for the light-transmitting layer.

公开(公告)号：US20220011589A1

公开(公告)日：2022-01-13

申请号：US17484734

申请日：2021-09-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/42 ,  G02B27/01

Abstract: A display device of the present disclosure includes, along an optical path of imaging light emitted from an imaging light generation device, a first optical portion having a positive power, a second optical portion including a first diffraction element and having a positive power, a third optical portion having a positive power, and a fourth optical portion including a second diffraction element and having a positive power. In the optical path, the first diffraction element and the second diffraction element diffract the imaging light at least along a primary diffraction plane and a secondary diffraction plane orthogonal to the primary diffraction plane, and a deflection force of the imaging light in the primary diffraction plane is greater than a deflection force of the imaging light in the secondary diffraction plane.

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.

公开(公告)号：US20210231958A1

公开(公告)日：2021-07-29

申请号：US17226271

申请日：2021-04-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Masatoshi YONEKUBO

IPC: G02B27/01 ,  G02B27/42 ,  G02B13/00

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.

公开(公告)号：US20210165226A1

公开(公告)日：2021-06-03

申请号：US17105482

申请日：2020-11-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Masatoshi YONEKUBO

IPC: G02B27/01 ,  G02B26/08

Abstract: An image display device includes an image light generation device configured to generate image light, and a deflection member configured to deflect the image light to form an exit pupil, in which the image light generation device includes a first light source unit configured to emit first light, a second light source unit configured to emit second light within a same frequency band as the first light and having a wavelength band different from a wavelength band of the first light, and a combining optical member configured to at least partially superimpose the first light and the second light, the deflection member includes a first diffraction member corresponding to the wavelength band of the first light and a second diffraction member corresponding to the wavelength band of the second light, and the first diffraction member and the second diffraction member overlap when viewed from the exit pupil.

公开(公告)号：US20210149209A1

公开(公告)日：2021-05-20

申请号：US17160788

申请日：2021-01-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Masatoshi YONEKUBO

IPC: G02B27/42 ,  G02B27/01 ,  G02B5/18 ,  G02B27/00

Abstract: In an optical system, a first optical section having positive power, a second optical section provided with a first diffractive element and having positive power, a third optical section having positive power, and a fourth optical section provided with a second diffractive element and having positive power are disposed along a light path of image light emitted from an image light generation device. A first intermediate image of the image light is formed between the first optical section and the third optical section, a pupil is formed in the vicinity of the third optical section, a second intermediate image of the image light is formed between the third optical section and the fourth optical section, and the fourth optical section collimates the image light to form an exit pupil. The first diffractive element and the second diffractive element are in a conjugate relation or a roughly conjugate relation.

公开(公告)号：US20210063750A1

公开(公告)日：2021-03-04

申请号：US17004311

申请日：2020-08-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01 ,  G02B5/30

Abstract: A head-mounted display according to the present disclosure includes an imaging light generating device that emits imaging light, and a half mirror that reflects the imaging light and transmits external light. The imaging light is incident on the half mirror as light of a predetermined polarization state, and, with respect to the light of the predetermined polarization state, reflectance of a first polarization by the half mirror is lower than reflectance of a second polarization by the half mirror.

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

IPC: G02B27/01 ,  G09G5/02

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.

公开(公告)号：US20190094546A1

公开(公告)日：2019-03-28

申请号：US16142188

申请日：2018-09-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01 ,  G02B27/42

Abstract: In an optical system of a display device, a second reflection element, a first diffraction element, a first reflection element, and a second diffraction element are disposed along a traveling direction of image light emitted from an image light projecting device. A reflection surface of the first reflection element is a concave surface being a free-curved surface and being recessed in a central portion with respect to a peripheral portion, and an intermediate image is formed between the first reflection element and the second diffraction element. A reflection surface of the second reflection element is a concave surface being a free-curved surface and being recessed in a central portion with respect to a peripheral portion, and an intermediate image is formed between the second reflection element and the first diffraction element. Therefore, an intermediate lens for forming an intermediate image is not provided.

公开(公告)号：US20180207963A1

公开(公告)日：2018-07-26

申请号：US15923243

申请日：2018-03-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomoya MUROTANI ,  Mitsutaka IDE ,  Hiroyuki KOBAYASHI ,  Hideyuki KATAOKA

IPC: B41J13/00 ,  B41J11/00

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, a medium support unit in which a support surface that is capable of supporting continuous paper that is transported by a transport unit, and first concave sections, which are indented from the support surface, are formed, and an image capture unit, which is disposed on a lower side of the support surface, and which captures an image of a lower surface of the continuous paper.