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1. 发明授权

US11327301B2 Virtual image display device 有权
公开(公告)号：US11327301B2
公开(公告)日：2022-05-10
申请号：US16533136
申请日：2019-08-06
申请人： SEIKO EPSON CORPORATION
发明人： Masayuki Takagi , Akira Komatsu , Takashi Takeda , Toshiaki Miyao , Tokito Yamaguchi
IPC分类号： G02B27/00 , G02B3/00 , G02B17/08 , G02B27/28
摘要： A virtual image display device includes an image element configured to display an image, a first lens disposed in an extraction position of image light and including at the image element side thereof a convex surface, a second lens disposed further toward the image element side than the first lens and including a concave surface bonded to the convex surface of the first lens, a half mirror provided in a bonding portion for bonding together the convex surface and the concave surface, a transmission/reflection selection member provided at a light emitting side of the first lens and configured to selectively perform transmission or reflection of the light depending on a polarization state of the light, and a light-guiding portion keeping close contact between the image element and the second lens and configured to guide the image light.

2. 发明授权

US11204500B2 Virtual image display device 有权
公开(公告)号：US11204500B2
公开(公告)日：2021-12-21
申请号：US16130641
申请日：2018-09-13
申请人： SEIKO EPSON CORPORATION
发明人： Masayuki Takagi , Akira Komatsu , Takashi Takeda , Toshiaki Miyao , Tokito Yamaguchi
IPC分类号： G02B27/01 , G02B5/30
摘要： A half mirror 21 provided in an optical path bends the optical path, and a semi-transmissive polarizing plate 23 increases the transmittance of image light GL in a direction along alignment of the eyes of an observer while the virtual image display device has a wide angle of view and is downsized, thus reducing luminance unevenness between the central region and the peripheral region in the image in the direction and allowing the observer to view a high quality image.

3. 发明授权

US10884254B2 Image display device having ocular optical system causing images to overlap in a blending area 有权
公开(公告)号：US10884254B2
公开(公告)日：2021-01-05
申请号：US16162796
申请日：2018-10-17
申请人： SEIKO EPSON CORPORATION
发明人： Tokito Yamaguchi , Masayuki Takagi , Toshiaki Miyao , Akira Komatsu , Takashi Takeda
IPC分类号： G02B27/10 , G02B27/01
摘要： An image display device includes a plurality of display elements configured to emit image light corresponding to a plurality of separate areas, and an ocular optical system configured to emit, to a position corresponding to an eye of an observer, the image light emitted from the plurality of display elements. The ocular optical system causes images to overlap with each other in a blending area including a boundary between the plurality of areas. An overlapping angle width in a direction orthogonal to the boundary of the blending area on a central visual field side is smaller than an overlapping angle width in the direction orthogonal to the boundary of the blending area on a peripheral visual field side.

4. 发明授权

US10247945B2 Virtual image display apparatus 有权
公开(公告)号：US10247945B2
公开(公告)日：2019-04-02
申请号：US15374656
申请日：2016-12-09
申请人： SEIKO EPSON CORPORATION
发明人： Masayuki Takagi , Takahiro Totani , Takashi Takeda , Akira Komatsu , Toshiaki Miyao
IPC分类号： G02B27/01 , G02B6/10 , H04N9/31 , F21V8/00 , G02B5/00
摘要： 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.

5. 发明授权

US10228567B2 Virtual image display apparatus 有权
公开(公告)号：US10228567B2
公开(公告)日：2019-03-12
申请号：US15079573
申请日：2016-03-24
申请人： SEIKO EPSON CORPORATION
发明人： Masayuki Takagi , Takahiro Totani , Takashi Takeda , Akira Komatsu , Toshiaki Miyao
IPC分类号： G02B27/01 , G02B3/00
摘要： 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.

6. 发明授权

US09958683B2 Light guide device, virtual image display apparatus, and method for manufacturing light guide device 有权
公开(公告)号：US09958683B2
公开(公告)日：2018-05-01
申请号：US15459390
申请日：2017-03-15
申请人： SEIKO EPSON CORPORATION
发明人： Masayuki Takagi , Toshiaki Miyao , Takahiro Totani , Takashi Takeda , Akira Komatsu
IPC分类号： G02B25/00 , G02B27/01 , G02B1/14 , F21V8/00
CPC分类号： G02B27/0172 , G02B1/14 , G02B6/0048 , G02B27/0006 , G02B2027/0125 , G02B2027/013 , G02B2027/0178 , G02B2027/0194
摘要： In a light guide device, a step between optical surfaces connected to each other by a connection portion can be limited (e.g., to 1 mm or smaller) so that a large stepped portion is not allowed to be formed at the connection portion in a hard coat formation process, whereby a coating liquid that flows along portions that are to form the optical surfaces forms no liquid pool or causes no liquid sagging. The light guide device can thus maintain satisfactory light guiding performance at the light guide portion.

7. 发明授权

US09784977B2 Light guide apparatus and virtual image display apparatus 有权
公开(公告)号：US09784977B2
公开(公告)日：2017-10-10
申请号：US15174034
申请日：2016-06-06
申请人： SEIKO EPSON CORPORATION
发明人： Takashi Takeda , Takahiro Totani , Masayuki Takagi , Toshiaki Miyao , Akira Komatsu
IPC分类号： G02B27/14 , G09G5/00 , G02B27/01 , G02B17/00 , F21V8/00 , G02B3/08 , G02B27/30
CPC分类号： G02B27/0172 , G02B3/08 , G02B6/00 , G02B6/0031 , G02B6/0053 , G02B6/0055 , G02B17/006 , G02B17/008 , G02B27/30 , G02B2027/0116
摘要： 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.

8. 发明授权

US09188782B2 Virtual image display device 有权
标题翻译：虚拟图像显示设备
公开(公告)号：US09188782B2
公开(公告)日：2015-11-17
申请号：US14172518
申请日：2014-02-04
申请人： SEIKO EPSON CORPORATION
发明人： Akira Komatsu , Takahiro Totani , Masayuki Takagi , Takashi Takeda , Toshiaki Miyao
IPC分类号： G09G5/00 , G02B27/01 , G02B17/08
CPC分类号： G02B27/0172 , G02B17/086 , G02B2027/0145
摘要： 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.
摘要翻译：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

9. 发明授权

US09013796B2 Virtual image display device 有权
标题翻译：虚拟图像显示设备
公开(公告)号：US09013796B2
公开(公告)日：2015-04-21
申请号：US14172293
申请日：2014-02-04
申请人： Seiko Epson Corporation
发明人： Akira Komatsu , Takahiro Totani , Takashi Takeda , Masayuki Takagi , Toshiaki Miyao
IPC分类号： G02B27/14 , G02B27/01 , G02B17/08
CPC分类号： G02B27/0172 , G02B17/0856 , G02B2027/011 , G02B2027/0118 , G02B2027/012 , G02B2027/0123 , G02B2027/0127 , G02B2027/0178
摘要： 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.
摘要翻译：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。

10. 发明授权

US11199712B2 Virtual image display device including incident side and emission side diffraction elements 有权
$Virtual image display device including incident side and emission side diffraction elements$
公开(公告)号：US11199712B2
公开(公告)日：2021-12-14
申请号：US16660891
申请日：2019-10-23
申请人： SEIKO EPSON CORPORATION
发明人： Takashi Takeda , Akira Komatsu , Masayuki Takagi , Toshiaki Miyao
IPC分类号： G02B5/18 , G02B27/01 , G02B1/11 , F21V8/00 , G02B27/00 , G02B6/34
摘要： 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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