公开(公告)号：US20230111091A1

公开(公告)日：2023-04-13

申请号：US17961383

申请日：2022-10-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshiaki MIYAO ,  Toshiyuki NOGUCHI ,  Mitsutaka IDE

IPC: G02B27/01

Abstract: An optical member includes a plurality of optically effective surfaces, and a plurality of measurement reference members that are associated with the plurality of optically effective surfaces and each of which serves as a reference for positioning of the plurality of optically effective surfaces. In this case, a relative positional relationship of the optically effective surfaces can be determined, and the optical performance of the optical member can be accurately evaluated.

公开(公告)号：US20230030353A1

公开(公告)日：2023-02-02

申请号：US17876762

申请日：2022-07-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

IPC: G02B27/01 ,  G02B17/06 ,  G02B5/00 ,  G02B5/30

Abstract: A virtual image display device includes a display element, which is an image light generating unit that generates an image light, a first mirror that reflects the image light, a second mirror that reflects the image light reflected by the first mirror, and a third mirror that transmits external light and that reflects part of the image light reflected by the second mirror to guide the image light to a position of an exit pupil, wherein the first mirror has an angular dependence on a reflective surface.

公开(公告)号：US20210239990A1

公开(公告)日：2021-08-05

申请号：US17162873

申请日：2021-01-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Masatoshi YONEKUBO ,  Takashi TAKEDA ,  Mitsutaka IDE

IPC: G02B27/01

Abstract: A display module includes an image light generation device configured to generate image light, a first reflection section configured to reflect the image light from the image light generation device, a first diffraction element configured to diffract the image light entering a first incident surface, a second reflection section configured to reflect the image light from the first diffraction element, and a second diffraction element configured to diffract the image light entering a second incident surface, thereby forming an exit pupil. When viewed from a normal line direction of a virtual plane including a normal line of the first incident surface and a normal line of the second incident surface, an optical axis of the image light from the image light generation device toward the first reflection section and an optical axis of the image light from the first diffraction element toward the second reflection section intersect each other.

公开(公告)号：US20210239989A1

公开(公告)日：2021-08-05

申请号：US17162186

申请日：2021-01-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Masatoshi YONEKUBO

IPC: G02B27/01

Abstract: An image light generation module includes a first display element configured to emit first image light, a second display element configured to emit second image light, a third display element configured to emit third image light, a combining prism configured to emit combined image light combined from the first image light, the second image light, and the third image light, and a first gap defining member that defines a first gap between the first display element and the combining prism, a second gap defining member that defines a second gap between the second display element and the combining prism, and a third gap defining member that defines a third gap between the third display element and the combining prism, in which at least one of the first gap, the second gap, and the third gap is different in size from another of the gaps.

公开(公告)号：US20210165216A1

公开(公告)日：2021-06-03

申请号：US17105516

申请日：2020-11-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Masayuki TAKAGI ,  Masatoshi YONEKUBO ,  Mitsutaka IDE

IPC: G02B27/01 ,  G02B5/18 ,  G02B5/04 ,  F21V8/00

Abstract: In a correction optical member for an HMD, a first optical member and a second optical member are arranged side by side. The first optical member includes a first diffraction grating disposed on a first surface and a second diffraction grating disposed on a second surface that is opposite to the first surface so as to face away from the first diffraction grating. The second optical member includes a third diffraction grating disposed on a third surface that is arranged in an extending direction of the first surface, and a fourth diffraction grating disposed on a fourth surface that is arranged in an extending direction of the second surface.

公开(公告)号：US20210063753A1

公开(公告)日：2021-03-04

申请号：US17097626

申请日：2020-11-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Akio FUKASE ,  Mitsutaka IDE ,  Toshiyuki NOGUCHI

IPC: G02B27/01 ,  G03B33/12 ,  G03H1/02

Abstract: An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.

公开(公告)号：US20200310129A1

公开(公告)日：2020-10-01

申请号：US16827755

申请日：2020-03-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Toshiyuki NOGUCHI

IPC: G02B27/01 ,  G03H1/02 ,  G02B5/18

Abstract: A display device according to the present invention includes, along an optical path of image light emitted from an image light generating device, a first optical unit having positive power, a second optical unit having positive power and including a first diffraction element of a reflective type, a third optical unit having positive power, and a fourth optical unit having positive power and including a second diffraction element of a reflective type. The second optical unit includes a first light-transmitting member having optical power and provided at a first surface of the first diffraction element, and a light shielding member provided at a second surface of the first diffraction element.

公开(公告)号：US20180088335A1

公开(公告)日：2018-03-29

申请号：US15696502

申请日：2017-09-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE

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

CPC classification number: G02B27/0172 ,  G02B26/101 ,  G02B27/0025 ,  G02B27/0977 ,  G02B2027/011 ,  G02B2027/0145 ,  G02B2027/0178

Abstract: A head mounted display device includes a scanning section that forms a scan image by scanning a light beam emitted from a light source, a light guiding optical system that guides the light beam emitted from the scanning section, and a deflection member that deflects the light beam guided by the light guiding optical system toward the eye. The light guiding optical system includes an optical correction system in which a first light path length of a light beam from the scanning section to a first end portion on a nose side of the deflection member is longer than a second light path length of a light beam from the scanning section to a second end portion on an ear side of the deflection member, and that corrects scanning distortion in the scan image which cause a virtual image to have different magnifications in a horizontal direction.

公开(公告)号：US20150273886A1

公开(公告)日：2015-10-01

申请号：US14666827

申请日：2015-03-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Mitsutaka IDE ,  Tomoya MUROTANI ,  Hiroyuki KOBAYASHI

IPC: B41J11/00

CPC classification number: B41J11/0085 ,  B41J11/0095 ,  B41J11/42 ,  B41J13/0027 ,  B41J15/00 ,  B41J15/048 ,  B41J29/17

Abstract: A printer includes a transportation unit that transports a continuous form paper, an ejecting unit that ejects ink onto the continuous form paper, a continuous form paper supporting unit that includes a supporting surface capable of supporting the continuous form paper so as to be opposite to the ejecting unit, a light-transmitting glass that is mounted at a position in the medium supporting unit which faces the continuous form paper transported by the transportation unit, an imaging unit that captures an image of the continuous form paper which passes over a front surface of the light-transmitting glass, a control unit that controls a transportation amount of the continuous form paper based on the image captured by the imaging unit, and a suction fan that generates an airflow onto the front surface of the light-transmitting glass. An antistatic film is formed on the front surface of the light-transmitting glass.

Abstract translation: 打印机包括输送连续成型纸的输送单元，将油墨喷射到连续成型纸上的排出单元，连续成型纸支撑单元，其包括支撑表面，该支撑表面能够支撑连续成形纸以与 喷射单元，安装在介质支撑单元中的面对由传送单元传送的连续成形纸的位置的透光玻璃;成像单元，其捕获经过传送单元的前表面的连续纸的图像; 透光玻璃，控制单元，其基于由成像单元捕获的图像来控制连续纸的输送量;以及吸风扇，其在透光玻璃的前表面上产生气流。 在透光玻璃的前表面上形成抗静电膜。

公开(公告)号：US20150174922A1

公开(公告)日：2015-06-25

申请号：US14638827

申请日：2015-03-04

Applicant: SEIKO EPSON CORPORATION

Inventor： Takahiro ABE ,  Mitsutaka IDE

IPC: B41J11/00

CPC classification number: B41J11/002 ,  B41J11/0095 ,  B65H23/1806 ,  B65H2513/10 ,  B65H2513/11 ,  B65H2801/15 ,  B65H2801/36 ,  G01B5/00 ,  G06K9/00 ,  G06K9/209 ,  G06K2209/19 ,  B65H2220/01 ,  B65H2220/03

Abstract: A transportation device includes a transportation unit that transports continuous paper, and an image capturing unit that has a light irradiator capable of irradiating the continuous paper which is transported by the transportation unit with light and detects a transportation amount of the continuous paper based on reflected light of the light irradiated onto the continuous paper by the light irradiator. The light irradiator is arranged so as to irradiate the continuous paper with light obliquely with respect to the detection region of the continuous paper from the width direction side of the continuous paper, which is orthogonal to the transportation direction of the continuous paper.

Abstract translation: 一种运送装置，包括输送连续纸的运送单元和具有能够用光照射由运送单元输送的连续纸的光照射装置的摄像单元，并基于反射光检测连续纸的输送量 通过光照射器照射到连续纸上的光。 光照射器配置成从与连续纸的传送方向正交的连续纸的宽度方向侧相对于连续纸的检测区域倾斜地照射连续纸。