公开(公告)号：US20210063747A1

公开(公告)日：2021-03-04

申请号：US17001700

申请日：2020-08-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Atsushi SAITO ,  Hiroyuki TATSUGI ,  Toshiyuki NOGUCHI

IPC: G02B27/01 ,  G03H1/02

Abstract: A method for manufacturing an optical element according to the present disclosure includes, a first step of, after affixing a hologram forming material to a glass substrate having a marking portion, performing interference exposure on the hologram forming material, thereby forming a hologram layer at the glass substrate, and a second step of affixing the hologram layer peeled off from the glass substrate to a plastic substrate having a first alignment mark, wherein in the second step, the first alignment mark on the plastic substrate, and a second alignment mark formed at a position corresponding to the marking portion in the hologram layer during the interference exposure are used to implement positioning of the plastic substrate and the hologram layer.

公开(公告)号：US20190094451A1

公开(公告)日：2019-03-28

申请号：US16143985

申请日：2018-09-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Shohei YOSHIDA ,  Atsushi SAITO ,  Hiroyuki TATSUGI ,  Masatoshi YONEKUBO

IPC: F21V8/00 ,  H04N13/344 ,  G02B27/09

CPC classification number: G02B6/0055 ,  G02B27/01 ,  G02B27/0172 ,  G02B27/095 ,  G02B27/0977 ,  G02B2027/0121 ,  G02B2027/0178 ,  H04N13/344

Abstract: A light-guiding device used in a display device includes a plurality of first half mirrors between a first light-guiding body and a second light-guiding body. Each of the first half mirrors is formed on a first surface extending along a first direction of the first surface and a second surface extending along a second direction in the first light-guiding body. The first light-guiding body includes a third surface overlapping the second surface in a direction along a third direction in which two first surfaces located on both sides of the second surface do not overlap each other between the first surface and the second surface. The third surface extends in a direction different from the first direction.

公开(公告)号：US20200285064A1

公开(公告)日：2020-09-10

申请号：US16811050

申请日：2020-03-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Takashi TAKEDA ,  Akio FUKASE ,  Hiroyuki TATSUGI

IPC: G02B27/14 ,  G02B27/01 ,  G02B27/10

Abstract: A display module of the present disclosure includes a display module main body and a housing. The display module main body includes a first, a second display element, and a prism. The housing includes a first, and a second frame. The first frame holds the first display element in a state in which the prism is positioned between a first and a second plate portion, and in which a third plate portion is in contact with the first display element and faces a first surface, and the second frame holds the second display element in a state in which the prism is positioned between a fourth and a fifth plate portion, and in which a sixth plate portion is in contact with the second display element and faces a second surface.

公开(公告)号：US20200004034A1

公开(公告)日：2020-01-02

申请号：US16456043

申请日：2019-06-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Masatoshi YONEKUBO ,  Hiroyuki TATSUGI ,  Hidemitsu SORIMACHI

IPC: G02B27/14 ,  G02B5/04

Abstract: An optical module according to the present disclosure includes a cross dichroic prism, a first display panel, a second display panel, a third display panel, a first adhesive layer configured to bond the first display panel to the cross dichroic prism, a second adhesive layer configured to bond the second display panel to the cross dichroic prism, and a third adhesive layer configured to bond the third display panel to the cross dichroic prism. At least one of the first adhesive layer, the second adhesive layer, and the third adhesive layer includes a spacer member.

公开(公告)号：US20220099979A1

公开(公告)日：2022-03-31

申请号：US17487826

申请日：2021-09-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroyuki TATSUGI

IPC: G02B27/01 ,  G02B27/42

Abstract: A diffraction optical member includes a first substrate having moisture permeability, a first dielectric film provided at one surface of the first substrate, a hologram element provided at the first dielectric film, a second substrate provided facing the hologram element, and an adhesive member configured to adhere the first substrate to the second substrate to form an accommodation space that accommodates the hologram element.

公开(公告)号：US20190265483A1

公开(公告)日：2019-08-29

申请号：US16287764

申请日：2019-02-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroyuki TATSUGI ,  Toshiyuki NOGUCHI ,  Atsushi SAITO

IPC: G02B27/01 ,  G02B27/42

Abstract: A diffractive optical element according to the invention includes a holographic element configured to deflect incident light, a first substrate provided on one surface side of the holographic element, a first dielectric film provided between the first substrate and the holographic element, a second dielectric film provided on another surface side of the holographic element, and a third dielectric film provided on a side surface side of the holographic element.