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公开(公告)号：US20190137763A1
公开(公告)日：2019-05-09
申请号：US16134367
申请日：2018-09-18
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Masayuki TAKAGI , Toshiaki MIYAO , Takahiro TOTANI , Takashi TAKEDA
Abstract: There are provided 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：US20190004317A1
公开(公告)日：2019-01-03
申请号：US16011816
申请日：2018-06-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Masayuki TAKAGI , Toshiaki MIYAO , Takashi TAKEDA
CPC classification number: G02B27/0172 , G02B6/00 , G02B6/002 , G02B6/0055 , G02B2027/0116 , G02B2027/0178
Abstract: A virtual image display apparatus includes an image projection apparatus that emits image light, and a display optical system that forms a virtual image according to the image light from a liquid crystal device (image forming device). The display optical system is configured by at least two members having different refractive indices and bends the image light a plurality of times between mediums having different refractive indices in a predetermined direction. A cumulative value of an index for chromatic dispersion with respect to the predetermined direction on a refractive surface of each bent portion is smaller than or equal to a predetermined reference value.
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公开(公告)号：US20180288375A1
公开(公告)日：2018-10-04
申请号：US15964867
申请日：2018-04-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Takahiro TOTANI , Takashi TAKEDA , Akira KOMATSU , Toshiaki MIYAO
IPC: H04N9/31 , G02F1/1335 , G02B27/01 , G02F1/1368
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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14.发明申请公开(公告)号：US20170257620A1
公开(公告)日：2017-09-07
申请号：US15433139
申请日：2017-02-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Masayuki TAKAGI , Toshiaki MIYAO , Akira KOMATSU , Takahiro TOTANI
CPC classification number: H04N13/344 , G02B27/017 , G02B2027/0123 , G02B2027/0134 , G09G5/10 , G09G2310/0232 , H04N13/139 , H04N13/383 , H04N13/398 , H04N2213/001
Abstract: First and second display devices have first and second common display areas in which image display with common content to left and right eyes is performed. At least one of the first and second display devices has an extended display area. A display control unit generates a signal including common image information for the first and second common display areas and extension image information for the extended display area.
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公开(公告)号：US20170184853A1
公开(公告)日：2017-06-29
申请号：US15369144
申请日：2016-12-05
Applicant: SEIKO EPSON CORPORATION
Inventor： Masayuki TAKAGI , Takahiro TOTANI , Toshiaki MIYAO , Takashi TAKEDA , Akira KOMATSU
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B2027/0118 , G02B2027/013 , G02B2027/0178
Abstract: An apparatus has a see-through configuration that guides picture lights by a light guide device and superimposes lights from the outside world and the picture lights for visual recognition. The light guide device has a light guide prevention structure (light transmission prevention structure) provided in a narrow width shape part having a narrower shape than a surrounding part, and thereby, prevents unintended reflection or the like of lights due to the lights from the outside world and suppresses light guide of the lights toward an observer side.
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Patent Agency Ranking
公开(公告)号：US20170052375A1
公开(公告)日：2017-02-23
申请号：US15174034
申请日：2016-06-06
Applicant: SEIKO EPSON CORPORATION
Inventor： Takashi TAKEDA , Takahiro TOTANI , Masayuki TAKAGI , Toshiaki MIYAO , Akira KOMATSU
CPC classification number: G02B27/0172 , G02B3/08 , G02B6/00 , G02B6/0031 , G02B6/0053 , G02B6/0055 , G02B17/006 , G02B17/008 , G02B27/30 , G02B2027/0116
Abstract: Providing an image extraction section with a plurality of video light reflection surfaces that are Fresnel-shaped reflection surfaces allows reduction in the thickness of a light guide apparatus and hence the thickness and size of a virtual image display apparatus. In particular, providing a dispersion elimination section for eliminating wavelength dispersion in correspondence with the image extraction section suppresses image deterioration resulting from dispersion (chromatic aberrations) on a wavelength band basis.
Abstract translation: 提供具有多个菲涅耳反射面的视频光反射面的图像提取部，能够减小导光装置的厚度，从而能够减小虚像显示装置的厚度和尺寸。 特别地，提供一种消除与图像提取部分相对应的波长色散的色散消除部分，抑制基于波段的色散（色差）导致的图像劣化。
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公开(公告)号：US20160178909A1
公开(公告)日：2016-06-23
申请号：US14910139
申请日：2014-08-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Takahiro TOTANI , Masayuki TAKAGI , Takashi TAKEDA , Toshiaki MIYAO
CPC classification number: G02B27/0172 , G02B13/16 , G02B13/18 , G02B17/0848 , G02B17/086 , G02B27/0012 , G02B2027/011 , G02B2027/0123 , G02B2027/013 , G02B2027/0145 , G02B2027/0178
Abstract: A light guide member (10) includes three surfaces of a second surface (S12), a fourth surface (S14), and a fifth surface (S15) as two or more non-axisymmetric curved surfaces, and a projection lens (30) includes a lens surface (31a) as a non-axisymmetric aspheric surface. With this, on the light guide member side, even when there is a shape constraint that the first surface (S11) or the third surface (S13) which is a surface contributing to light guide is a flat surface, and correction of asymmetric aberration is limited, it becomes possible to perform sufficient aberration correction as the whole of an optical system including the projection lens. Therefore, the virtual image display apparatus can have a wide viewing angle and high performance, and can be made small and lightweight.
Abstract translation: 导光构件（10）包括作为两个或更多个非轴对称曲面的第二表面（S12），第四表面（S14）和第五表面（S15）的三个表面，并且投影透镜（30）包括 作为非轴对称非球面的透镜表面（31a）。 由此，在导光体侧，即使存在作为有助于导光体的表面的第一面（S11）或第三面（S13）为平坦面的形状约束，并且对称像差的校正为 作为包括投影透镜的光学系统的整体，可以进行足够的像差校正。 因此，虚像显示装置可以具有宽视角和高性能，并且可以做得小而轻。
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公开(公告)号：US20150160460A1
公开(公告)日：2015-06-11
申请号：US14555975
申请日：2014-11-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Takahiro TOTANI , Masayuki TAKAGI , Takashi TAKEDA , Toshiaki MIYAO
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B17/0856 , G02B2027/0116
Abstract: In an optical system having an extremely simple configuration configured by first and second prisms which are prisms in a flat shape and a reflecting surface provided in these prisms, in the first prism which is disposed on a side close to the eyes, that is, on a side apart from a video display element (video element) at a certain distance, a correction lens surface for correcting a chromatic aberration of video light is provided. Accordingly, a virtual image display apparatus is small and light, and has a high performance with a reduced chromatic aberration of magnification.
Abstract translation: 在具有由平面形状的棱镜和设置在这些棱镜中的反射面的第一和第二棱镜构成的非常简单的构造的光学系统中，在靠近眼睛的一侧设置的第一棱镜中，即， 提供了一定距离的视频显示元件（视频元件）的一侧，提供了用于校正视频光的色差的校正透镜表面。 因此，虚像显示装置小而轻，并且具有降低的色像差的高性能。
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公开(公告)号：US20140226215A1
公开(公告)日：2014-08-14
申请号：US14172293
申请日：2014-02-04
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Takahiro TOTANI , Takashi TAKEDA , Masayuki TAKAGI , Toshiaki MIYAO
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B17/0856 , G02B2027/011 , G02B2027/0118 , G02B2027/012 , G02B2027/0123 , G02B2027/0127 , G02B2027/0178
Abstract: An intermediate image is formed inside the prism by a projection lens or the like, and since an image light that is totally reflected at three or more surfaces; a third surface firstly, a first surface firstly, at a third surface secondly, at a first surface secondly, and the second surface in this order, transmits the first surface and then arrives at an observer's eyes, the thickness of the prism can be reduced and the size and weight of the entire optical system can be reduced, and it is possible to realize a display of high performance and brightness with a wide angle of view. Since the external light can be observed after passing through the first surface and the third surface, and the visibility at that time becomes substantially zero, it is possible to reduce the defocus or distortion of the external light when observing the external light.
Abstract translation: 通过投影透镜等在棱镜内形成中间图像，并且由于在三个或更多表面处被全反射的图像光; 第一表面，第一表面，第一表面，第二表面，第二表面，第二表面，第二表面，依次透射第一表面，然后到达观察者的眼睛，棱镜的厚度可以减小 并且可以减小整个光学系统的尺寸和重量，并且可以以宽视角实现高性能和亮度的显示。 由于可以在通过第一表面和第三表面之后观察外部光，并且此时的可见度变得基本为零，所以可以在观察外部光时减少外部光的散焦或变形。
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公开(公告)号：US20140225813A1
公开(公告)日：2014-08-14
申请号：US14172518
申请日：2014-02-04
Applicant: SEIKO EPSON CORPORATION
Inventor： Akira KOMATSU , Takahiro TOTANI , Masayuki TAKAGI , Takashi TAKEDA , Toshiaki MIYAO
IPC: G02B27/01
CPC classification number: G02B27/0172 , G02B17/086 , G02B2027/0145
Abstract: An intermediate image is formed inside the prism by a projection lens or the like, and since an image light that is totally reflected at three or more surfaces; at a third surface firstly, at a first surface firstly, at a third surface secondly, at the first surface secondly, and at the second surface in the order specified, transmits the first surface, and then arrives at an observer's eye, the size and weight of the prism can be reduced and it is possible to realize a display of high performance and brightness with a wide angle of view. In addition, since the external light can be observed after passing through the first surface and the third surface, and the visibility at that time becomes substantially zero, it is possible to reduce the defocus or distortion of the external light when observing the see-through external light.
Abstract translation: 通过投影透镜等在棱镜内形成中间图像，并且由于在三个或更多表面处被全反射的图像光; 首先在第一表面，第一表面，第三表面，第二表面，第二表面，第二表面，第二表面，以指定的顺序，透射第一表面，然后到达观察者的眼睛，尺寸和 可以减小棱镜的重量，并且可以以广视角实现高性能和亮度的显示。 此外，由于可以在穿过第一表面和第三表面之后观察外部光，并且此时的可见度变得基本为零，所以可以在观察透视时减少外部光的散焦或变形 外部光线
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