公开(公告)号：US20180088342A1

公开(公告)日：2018-03-29

申请号：US15696739

申请日：2017-09-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/09 ,  G02B6/02 ,  G02B6/12 ,  G02B27/10 ,  G02B27/14 ,  F21V8/00

CPC classification number: G02B27/0977 ,  G02B6/0031 ,  G02B6/02066 ,  G02B6/12004 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/0905 ,  G02B27/1093 ,  G02B27/148

Abstract: A beam diameter expanding device includes a first optical element and a second optical element. The first optical element expands a beam diameter of a light beam entering through a first incident face by expanding in a first direction, and emits the expanded light beam from a first emission face. The second optical element expands a beam diameter of the light beam that entered through a second incident face in a state expanded in beam diameter in the first direction by the first optical element, by expanding in a second direction, and emits the expanded light beam from a second emission face. A width of the first incident face in the second direction (the direction of beam diameter expansion by the second optical element) is narrower than a width of the second incident face in the first direction (the direction of beam diameter expansion by the first optical element).

公开(公告)号：US20180067325A1

公开(公告)日：2018-03-08

申请号：US15557064

申请日：2016-02-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Masatoshi YONEKUBO ,  Osamu YOKOYAMA ,  Takashi TAKEDA ,  Mitsutaka IDE ,  Daisuke ISHIDA

IPC: G02B27/02 ,  G02B27/01 ,  G02B5/18 ,  G02B5/32 ,  H04N5/64

Abstract: The image display device includes an image generating unit that emits first image light, a pupil expanding element that expands a diameter of a light flux included in the first image light from the image generating unit to obtain second image light, a first light condensing optical system that condenses the second image light and forms an intermediate image, and a second light condensing optical system that condenses light from the intermediate image and generates a virtual image on eye of a viewer, in a plane including at least the image generating unit, the pupil expanding element, and the eye of the viewer, a maximum emission angle of the first image light is smaller than a maximum viewing angle of the virtual image, and the diameter of the light flux included in the second image light is greater than that of a light flux included in the virtual image.

公开(公告)号：US20150273869A1

公开(公告)日：2015-10-01

申请号：US14666932

申请日：2015-03-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Hideyuki KATAOKA ,  Hiroyuki KOBAYASHI

IPC: B41J11/00 ,  H01L31/02 ,  H01L31/0232

CPC classification number: H01L31/02016 ,  B41J11/0095 ,  H01L31/02327

Abstract: A positioning method of a photoelectric conversion device (an imaging device) includes irradiating an optical member with light and receiving light which passes through an opening of a light shielding member and the optical member with the photoelectric conversion device. The photoelectric conversion device is moved in a direction orthogonal to an optical axis of the optical member and a first position at which the photoelectric conversion device detects a side of an opening and a second position at which the photoelectric conversion device detects another side opposing the side are acquired. A position of the photoelectric conversion device at which a center of the opening and a center position of the photoelectric conversion device are aligned based on the first position and the second position is determined. The photoelectric conversion device is fixed at the determined position.

Abstract translation: 光电转换装置（成像装置）的定位方法包括用光照射光学部件，并且通过光电转换装置接收穿过遮光部件的开口和光学部件的光。 光电转换元件在与光学元件的光轴正交的方向和光电转换元件检测到开口侧的第一位置以及光电转换元件检测与侧面相反的另一侧的第二位置移动 被收购 基于第一位置和第二位置确定光电转换装置的开口中心和光电转换装置的中心位置对准的位置。 光电转换装置固定在确定的位置。

公开(公告)号：US20250060593A1

公开(公告)日：2025-02-20

申请号：US18801865

申请日：2024-08-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01

Abstract: A virtual image display device that includes a display element, a first lens on which the image light from the display element is incident, a first prism on which the image light passing through the first lens is incident, a second prism joined to the first prism, an oblique mirror portion provided at a joint between the first prism and the second prism, a plano-convex second lens disposed facing an outer surface of the first prism, a transmission mirror formed at a convex surface of the second lens, a first quarter-wave plate disposed between the outer surface of the first prism and the second lens, a compensation lens including a concave surface, a condensing reflection mirror disposed in the second prism, and a second quarter-wave plate disposed between the inner surface of the second prism and the condensing reflection mirror.

公开(公告)号：US20240192497A1

公开(公告)日：2024-06-13

申请号：US18530224

申请日：2023-12-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B2027/0178

Abstract: A virtual image display device includes an image display device including a pixel display region for displaying an image and a light transmitting region for causing an external to be visually recognizable, a light shielding member being arranged on an external side of the image display device and being configured to suppress incidence of external light on the pixel display region, a polarizing plate being arranged on a face side of the image display device and being configured to limit transmitted light to a predetermined polarization direction, an image selection conversion member being arranged on a face side of the polarizing plate and including a wavelength plate for selectively changing a polarization direction of image light according to the pixel display region, and a polarization separation lens element being arranged on a face side of the image selection conversion member.

公开(公告)号：US20240192496A1

公开(公告)日：2024-06-13

申请号：US18528807

申请日：2023-12-05

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01 ,  G02B5/00 ,  G02B27/09

CPC classification number: G02B27/0172 ,  G02B5/003 ,  G02B27/0961 ,  G02B2027/0192

Abstract: A virtual image display device includes an image display device including a pixel display region for displaying an image and a light transmitting region for causing external scenes to be visually recognizable, an optical array being arranged on a face side of the image display device, including a plurality of micro optical elements provided corresponding to respective pixels, and being configured to form an image with image light emitted from the image display device, and a light shielding member being arranged on an external side of the image display device and being configured to suppress incidence of external light on the pixel display region.

公开(公告)号：US20240142707A1

公开(公告)日：2024-05-02

申请号：US18494765

申请日：2023-10-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Katsutoshi INOMOTO ,  Mitsutaka IDE ,  Masayuki TAKAGI ,  Takashi TAJIRI

IPC: G02B6/34 ,  G02B27/01

CPC classification number: G02B6/34 ,  G02B27/0172 ,  G02B2027/0178

Abstract: A virtual image display device includes a display panel being a display element configured to emit image light, a light-guiding member including a first total reflection surface and a second total reflection surface, a first diffraction element being provided on a light incidence side in association with the light-guiding member, a second diffraction element being provided on a light emission side in association with the light-guiding member, and a stray light suppression filter being provided on an external side of an image extraction part provided with the second diffraction element and being configured to limit passage of diffracted light from the second diffraction element.

公开(公告)号：US20230111577A1

公开(公告)日：2023-04-13

申请号：US17960825

申请日：2022-10-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshiyuki NOGUCHI ,  Toshiaki MIYAO ,  Mitsutaka IDE

IPC: G02B27/01

Abstract: An optical unit and a virtual image display device, that is, an HMD include a plurality of optical members, and the plurality of optical members have, at non-coupling portion, measurement reference members that serve as references for arrangement, respectively, and the plurality of measurement reference members of the plurality of optical members are arranged in a unified direction.

公开(公告)号：US20220317452A1

公开(公告)日：2022-10-06

申请号：US17708510

申请日：2022-03-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01 ,  G02B5/30 ,  G02B27/28

Abstract: An optical module includes a display element that emits image light of P-polarized light, an optical member including an incident portion on which the image light emitted is incident and an emission portion that emits the image light, a first wavelength plate that is disposed on the optical path between the display element and the optical member and that makes the image light of the P-polarized light into image light of circular polarized light, a second wavelength plate that is flat, that disposed between the incident portion and the emission portion of the optical member, and that makes the image light of the circular polarized light into image light of S-polarized light and make the image light of the S-polarized light into image light of P-polarized light, and a combiner that reflects the image light emitted from the optical member.

公开(公告)号：US20220172667A1

公开(公告)日：2022-06-02

申请号：US17537348

申请日：2021-11-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Masayuki TAKAGI ,  Mitsutaka IDE ,  Tokito YAMAGUCHI

IPC: G09G3/20

Abstract: A display module includes a display element, a light-guiding optical device, and a control unit configured to perform distortion correction including correction of a chromatic aberration of magnification. The light-guiding optical device is constituted of an optical system having non-axisymmetry in an up-and-down direction with respect to the imaging light entering the light-guiding optical device, and includes a first optical member having positive refractivity, a second optical member having positive refractivity, and a first reflection surface configured to reflect the imaging light toward a pupil position. The refractivity of the first optical member is greater than the refractivity of the second optical member. An abbe number of a constituent material of the first optical member is greater than an abbe number of a constituent material of the second optical member. The control unit performs distortion correction by a different distortion correction amount for each color light.