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公开(公告)号：US20180284445A1
公开(公告)日：2018-10-04
申请号：US15923485
申请日：2018-03-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B6/002 , G02B6/003 , G02B2027/0118 , G02B2027/0125 , G02B2027/0145 , G02B2027/0178
Abstract: A light guide device used in a display apparatus includes a transparent light guide portion that guides light beams incident from one end side to a light-emitting portion. The light guide portion includes a plurality of partial reflection surfaces between a first surface and a second surface which are parallel to each other, the plurality of partial reflection surfaces being inclined at the same angle from a normal direction with respect to the second surface toward the one end side. In the plurality of partial reflection surfaces, an appropriate incident angle range of the partial reflection surface positioned on the one end side is set to a larger angle than that of the partial reflection surface positioned on another end side.
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公开(公告)号：US20180284443A1
公开(公告)日：2018-10-04
申请号：US15922175
申请日：2018-03-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Hayato MATSUKI , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B6/0001 , G02B6/002 , G02B6/0035 , G02B6/0045 , G02B6/4204 , G02B27/0955 , G02B2027/0125 , G02B2027/0178
Abstract: A display apparatus includes an image generation system that emits image light beams as non-parallel light beams, and a light guide system on which the image light beams emitted from the image generation system are incident without passing through a projection lens system. The light guide system includes a transparent light-incident portion that includes a light-incident surface on which the image light beams are incident and which is a curved surface, and a plurality of reflection surfaces which convert the image light beams incident from the light-incident surface into parallel light beams and are curved surfaces, and a transparent light guide portion of which one end side in a first direction is connected to the light-incident portion. In the light guide portion, the image light beams incident from the light-incident portion are reflected between a first surface and a second surface, and are guided to a light-emitting portion.
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公开(公告)号：US20180095283A1
公开(公告)日：2018-04-05
申请号：US15710008
申请日：2017-09-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Akira KOMATSU , Masayuki TAKAGI , Toshiaki MIYAO
Abstract: A virtual image display device includes a display light guiding unit, and an image forming unit that emits image light to the display light guiding unit, the display light guiding unit includes a first light guiding unit that guides image light corresponding to a first angle of view, and a second light guiding unit that guides image light corresponding to a second angle of view, among angles of view of image light emitted from the image forming unit, and the first light guiding unit and the second light guiding unit respectively include incident side diffraction elements that take the image light beams into the inside, and emission side diffraction elements that emit the image light beams to the outside.
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公开(公告)号：US20180095281A1
公开(公告)日：2018-04-05
申请号：US15696326
申请日：2017-09-06
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Mitsutaka IDE
CPC classification number: G02B27/0172 , G02B27/1006 , G02B27/1086 , G02B27/4211 , G02B2027/0116 , G02B2027/0178
Abstract: A virtual image display apparatus includes a diffraction optical member including a diffraction section that directs the orientation of image light based on diffraction toward the position of a viewer's eye and a light transmissive substrate that is disposed in the diffraction section and on the side facing the eye and supports the diffraction section, and an image forming section that outputs the image light toward the diffraction optical member, and the light transmissive substrate is a color separation correcting section that corrects color separation produced by the diffraction section.
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公开(公告)号：US20170315360A1
公开(公告)日：2017-11-02
申请号：US15522254
申请日：2015-10-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA
Abstract: A retina scanning type display apparatus includes a scanning portion, a deflection member, and a light flux diameter expanding element. An incidence angle range in a first incidence direction with respect to an eye from the deflection member is broader than an incidence angle range in a second incidence direction, and, in the light flux diameter expanding element, an expanding magnification of light flux diameter in a first expanding direction, which corresponds to the first incidence direction, is greater than an expanding magnification of light flux diameter in a second expanding direction, which corresponds to the second incidence direction. In addition, in the scanning mirror, a width in a first scanning direction, which corresponds to the first expanding direction, is narrower than a width in a second scanning direction, which corresponds to the second expanding direction.
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Patent Agency Ranking
公开(公告)号：US20170227776A1
公开(公告)日：2017-08-10
申请号：US15514627
申请日：2015-09-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Osamu YOKOYAMA , Masatoshi YONEKUBO , Takashi TAKEDA , Daisuke ISHIDA , Mitsutaka IDE , Hidemitsu SORIMACHI
CPC classification number: G02B27/0172 , G02B5/32 , G02B6/0005 , G02B26/0833 , G02B26/101 , G02B27/0025 , G02B27/0081 , G02B2027/011 , G02B2027/0145 , G02B2027/0174 , G02B2027/0178 , H04N5/64
Abstract: An image display device with which it is possible to visually recognize an image while securing the see-through property regardless of eye movements and changes in interpupillary distance, with which it is possible to display a large-size image with high quality, and which is small, has excellent wearability, and has an excellent external appearance.
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公开(公告)号：US20170219830A1
公开(公告)日：2017-08-03
申请号：US15500683
申请日：2015-08-12
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Masayuki TAKAGI , Toshiaki MIYAO , Takahiro TOTANI , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B17/006 , G02B17/086 , G02B27/0018 , G02B27/0081 , G02B27/144 , G02B2027/013 , G02B2027/0174
Abstract: A light guide device that does not cause non-uniformity in image light and external light and does not cause ghosts, and a virtual image display apparatus provided with the light guide device. The light guide device includes a parallel light guide, an incident section, and an emission section. Here, the light guide device is set such that image light rays are reflected without reflecting from a boundary surface between the parallel light guide and the reflection unit and head for an observer. Thus, the image light rays only pass through half mirrors, which are positioned in positions where the image light rays are emitted from the reflection unit of the emission section or are positioned therearound. Accordingly, it is possible to prevent luminance non-uniformity or light reduction by reducing the number of times of the image light rays to be observed pass through the half mirrors.
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公开(公告)号：US20170184854A1
公开(公告)日：2017-06-29
申请号：US15374656
申请日：2016-12-09
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Takahiro TOTANI , Takashi TAKEDA , Akira KOMATSU , Toshiaki MIYAO
CPC classification number: G02B27/0172 , G02B5/005 , G02B6/002 , G02B6/0045 , G02B6/10 , G02B2027/0112 , G02B2027/0118 , G02B2027/0121 , G02B2027/0145 , G02B2027/0178 , H04N9/3141
Abstract: In a projection system, providing a stop that forms an opening that is symmetric with respect to a first flat plane including the projection system optical axis and a first axis that extends in parallel to the first direction and intersects the projection system optical axis but asymmetric with respect to a second flat surface including the projection system optical axis and a second axis that extends in parallel to the second direction and intersects the projection system optical axis allows appropriate light adjustment at the stop even when pencils of light from the points in a video device exit at different angles along a second direction, whereby high-quality video images can be provided with the size of an optical system further reduced and therefore the size of an overall virtual image display apparatus reduced.
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公开(公告)号：US20170180685A1
公开(公告)日：2017-06-22
申请号：US15368294
申请日：2016-12-02
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Takahiro TOTANI , Takashi TAKEDA , Akira KOMATSU , Toshiaki MIYAO
IPC: H04N9/31 , G02F1/1335 , G02F1/1368 , G02B27/01
CPC classification number: H04N9/3102 , G02B27/0172 , G02B2027/0145 , G02B2027/015 , G02B2027/0178 , G02F1/1335 , G02F1/133512 , G02F1/1368 , H04N9/3155 , H04N9/3164
Abstract: In a projection system, a nonaxisymmetric aspheric surface is used as a surface that is located in a position where in a pencil of light of video image light that exits from each of two points in different corner regions in an image plane that is a light exiting plane of an image display apparatus, light components that should reach a viewer's eyes do not intersect one another, whereby the size of an optical system can be further reduced and the size of an overall apparatus can therefore be reduced with a variety of types of optical precision, such as the resolution and angle of view, maintained.
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公开(公告)号：US20160282629A1
公开(公告)日：2016-09-29
申请号：US15079573
申请日：2016-03-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Takahiro TOTANI , Takashi TAKEDA , Akira KOMATSU , Toshiaki MIYAO
IPC: G02B27/01
CPC classification number: G02B27/0179 , G02B3/0006 , G02B27/0172 , G02B2027/0118
Abstract: Principal rays of component lights output from a periphery side of respective positions of an image surface generated in an image generation unit forming an image display device are controlled in an intensity distribution control unit so that the principal rays may be inclined more largely toward a center optical axis side than principal rays of component lights output from a center side and output, control is performed so that lights are output in the strongest intensity distributions with respect to axial directions of the principal rays of the respective component lights of image lights output in the respective positions by the intensity distribution control unit, and further, the positions can be adjusted by adjustment of output angles of the respective component lights in response to an aspect ratio of the image surface.
Abstract translation: 在形成图像显示装置的图像生成单元中生成的图像表面的各个位置的周边侧输出的分量光的主光线被控制在强度分布控制单元中，使得主光线可能朝向中心光学 轴方向比从中心侧输出的分量光的主光线输出，进行控制，使得相对于在各自的输出的图像光的各个分量光的主光线的轴向方向以最强的强度分布输出光 通过强度分布控制单元的位置，并且还可以通过响应于图像表面的纵横比来调节各个分量光的输出角度来调整位置。
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