公开(公告)号：US20160202485A1

公开(公告)日：2016-07-14

申请号：US14989306

申请日：2016-01-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02B27/01 ,  G02B26/10

CPC classification number: G02B27/0172 ,  G02B26/10 ,  G02B2027/0118 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: An image display apparatus includes a light source configured to emit image light, a scanning mirror configured to reflect the image light from the light source, and a reflective diffraction optical element configured to change a direction of the image light from the scanning mirror to a different direction in addition to regular reflection, and the scanning mirror is arranged at a position and a height as different from an observing point as possible, and a direction of extension of an interference fringe of the reflective diffraction optical element intersects incident light from the light source.

Abstract translation: 图像显示装置包括被配置为发射图像光的光源，被配置为反射来自光源的图像光的扫描反射镜和被配置为将来自扫描镜的图像光的方向改变为不同的反射衍射光学元件 除了正常反射以外，扫描镜配置在与观察点不同的位置和高度，反射衍射光学元件的干涉条纹的延伸方向与来自光源的入射光相交 。

公开(公告)号：US20230194758A1

公开(公告)日：2023-06-22

申请号：US18085994

申请日：2022-12-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02B1/00 ,  G03B21/14 ,  G03B21/28 ,  G03F7/00

CPC classification number: G02B1/002 ,  G03B21/142 ,  G03B21/28 ,  G03F7/0005 ,  G02F2202/30 ,  G02B27/1006

Abstract: A projector of the present disclosure includes a light source that emits laser light, a metasurface element that modulates the phase of the laser light emitted from the light source, and a light modulation element that modulates the phase-modulated laser light emitted from the metasurface element to generate projection light.

公开(公告)号：US20140340749A1

公开(公告)日：2014-11-20

申请号：US14120347

申请日：2014-05-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA ,  Masatoshi YONEKUBO ,  Osamu YOKOYAMA

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B5/30 ,  G02B27/0101 ,  G02B27/017 ,  G02B2027/0118 ,  G02B2027/0178

Abstract: In a display apparatus, image light emitted from an image forming device is incident on an image light incidence portion of a light guide member after being diffracted by a second diffractive optical element, and emitted from an image light emission portion after moving forward in the light guide member. The image light emitted from the image light emission portion is diffracted by a first diffractive optical element and reaches the eyes of an observer. On a position where unnecessary external light is made incident on the light guide member, an external light noise reduction element which has a polarizing member and the like is provided. For this reason, even when the unnecessary external light is made incident on the light guide member, it is possible to inhibit the unnecessary external light from reaching the eye of the observer.

Abstract translation: 在显示装置中，从图像形成装置发射的图像光在被第二衍射光学元件衍射之后入射到导光部件的图像光入射部分，并且在光线向前移动之后从图像发光部分发射 导游会员 从图像发光部发射的图像光被第一衍射光学元件衍射并到达观察者的眼睛。 在不必要的外部光入射到导光构件上的位置设置有具有偏光构件等的外部光噪声降低元件。 因此，即使不必要的外部光入射到导光部件上，也可以抑制不必要的外部光到达观察者的眼睛。

公开(公告)号：US20230314847A1

公开(公告)日：2023-10-05

申请号：US18128387

申请日：2023-03-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02F1/01 ,  G02B27/01

CPC classification number: G02F1/0102 ,  G02B27/0172 ,  G02B2027/0178 ,  G02F2202/30

Abstract: A phase modulation element including a substrate and a plurality of first columnar portions constituting a first metasurface, in which each of the plurality of first columnar portions includes a first surface that is closest to the substrate, and a second surface that is farthest from the substrate, and an area of the second surface is smaller than an area of the first surface in plan view from a direction perpendicular to the substrate.

公开(公告)号：US20220311978A1

公开(公告)日：2022-09-29

申请号：US17706763

申请日：2022-03-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: H04N9/31

Abstract: A light source device includes a light source configured to emit excitation light, a phosphor which the excitation light enters, the phosphor being configured to emit fluorescence different in wavelength from the excitation light, a plurality of first nanoantennas provided to the phosphor, and a plurality of second nanoantennas provided to the phosphor. Each of the first nanoantennas is formed of metal. Each of the second nanoantennas is formed of a material higher in melting point than the metal. An arrangement area of the plurality of second nanoantennas overlaps an irradiation area with the excitation light in a plan view viewed from a normal direction of the phosphor. An electric field enhancement of the fluorescence is achieved by each of the first nanoantennas and each of the second nanoantennas.

公开(公告)号：US20230102400A1

公开(公告)日：2023-03-30

申请号：US17955870

申请日：2022-09-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02B3/00 ,  G02B3/02 ,  G02B1/00 ,  G02B5/18 ,  G03B21/14

Abstract: A metalens (wavefront control element) according to the present disclosure is a wavefront control element that controls a wavefront of incident light, and includes a plurality of metasurface regions. The plurality of metasurface regions are arranged in an array.

公开(公告)号：US20210247616A1

公开(公告)日：2021-08-12

申请号：US17245053

申请日：2021-04-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02B27/01 ,  G02B27/42

Abstract: In an optical system of a display device, an image light projecting device emits image light toward a first side in a first direction. A reflective element of a first light-guiding system emits the image light emitted from the image light projecting device toward a second side in the first direction. A first diffraction element having a reflectivity emits the image light emitted from the reflective element toward the first side in the first direction. A second diffraction element having a reflectivity emits the image light emitted from the first diffraction element toward the second side in the first direction and causes the image light to be incident on an eye of an observer. An optical path from the first diffraction element to the second diffraction element is provided in a second light-guiding system.

公开(公告)号：US20210099681A1

公开(公告)日：2021-04-01

申请号：US17037204

申请日：2020-09-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: H04N9/31 ,  G02B5/02

Abstract: A phase modulation element of the present disclosure includes a substrate, and a plurality of columnar structures formed from a dielectric material provided at a first surface of the substrate, wherein the plurality of columnar structures have a refractive index and a pitch that produce a waveguide effect for incident light including a first light component and a second light component, the first surface of the substrate includes a first region provided with a plurality of first columnar structures that modulate phase for the first light component, and a second region provided with a plurality of second columnar structures that modulate phase for the second light component having parameters different from parameters of the first light component.

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.

公开(公告)号：US20210096386A1

公开(公告)日：2021-04-01

申请号：US17032304

申请日：2020-09-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Fumika YAMADA

IPC: G02B27/48 ,  G02B26/08 ,  G02B27/00 ,  F21V8/00 ,  G02B27/01

Abstract: A display apparatus includes an image light generating unit that includes a laser light source unit and a MEMS mirror configured to reflect laser light emitted from the laser light source unit, and that is configured to generate image light, an exit pupil expander configured to expand a luminous flux diameter of the image light from the image light generating unit, a light-guiding plate, a first surface relief-type diffraction grating provided at a light incidence portion of the light-guiding plate and on which the image light passing through the exit pupil expander is incident and enters the light-guiding plate, and a second surface relief-type diffraction grating provided at a light emission portion of the light-guiding plate and through which the image light propagating inside the light-guiding plate exits, in which the image light generating unit includes a speckle noise reduction section configured to reduce speckle noise in the image light.