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1. 发明授权

US11480860B2 Illuminator and projection-type display apparatus 有权
公开(公告)号：US11480860B2
公开(公告)日：2022-10-25
申请号：US16910145
申请日：2020-06-24
申请人： SEIKO EPSON CORPORATION
发明人： Hiroaki Miya , Akihiro Kashiwagi , Tomohiro Takagi , Yoichi Nakagomi
IPC分类号： G03B21/20 , G02B3/00 , H04N9/31
摘要： An illuminator includes a first light source, a second light source, a first lens on which light emitted from the first and second light sources is incident, a second lens disposed in a downstream of the first lens, and a half wave plate. The first lens, the second lens and the half wave plate are arranged along a first axis. The first light source and the second light source are arranged along a plane perpendicular to the first axis. The half wave plate is disposed in the optical axis between the first lens and the second lens, the half wave plate being disposed in a position close to the second lens.

2. 发明授权

US11343478B2 Method of controlling a display system including a plurality of projectors and control device 有权
公开(公告)号：US11343478B2
公开(公告)日：2022-05-24
申请号：US17084754
申请日：2020-10-30
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi , Hiroyuki Ichieda , Shiki Furui
IPC分类号： H04N9/31
摘要： A method of controlling a display system including the steps of projecting, by a plurality of group-belonging projectors, an image in one display area corresponding to one projector group to thereby display one composite image corresponding to the one projector group out of a plurality of composite images corresponding one-to-one to a plurality of projector groups in the one display area, estimating, by a control device, brightness of the plurality of composite images, identifying, by the control device, a dark image which is the darkest and a first adjustment target image different from the dark image from the plurality of composite images based on a result of the brightness estimation, and controlling, by the control device, at least one projector in the projector group corresponding to the first adjustment target image to thereby approximate brightness of the first adjustment target image to brightness of the dark image.

3. 发明授权

US10768517B2 Light source device and projector 有权
公开(公告)号：US10768517B2
公开(公告)日：2020-09-08
申请号：US15556239
申请日：2016-02-18
申请人： SEIKO EPSON CORPORATION
发明人： Koichi Akiyama , Akihiro Kashiwagi , Chigusa Takagi
IPC分类号： G03B21/20 , H04N9/31 , G03B21/28 , G03B21/00
摘要： A light source device includes: a light emission element; a condensing optical system on which a first component of light emitted from the light emission element is incident; an optical element on which the first component transmitted through the condensing optical system is incident; and a pickup optical system on which the first component having travelled via the optical element is incident. At least one of the condensing optical system and the pickup optical system includes a first lens formed of quartz.

4. 发明授权

US09291313B2 Wavelength conversion element, light source device, and projector 有权
标题翻译：波长转换元件，光源设备和投影机
公开(公告)号：US09291313B2
公开(公告)日：2016-03-22
申请号：US13758499
申请日：2013-02-04
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi , Shigeo Nojima , Akira Miyamae
IPC分类号： G03B21/14 , F21K99/00 , H05B33/00 , G03B21/20 , H05B33/10 , H05B33/14
CPC分类号： F21K9/56 , G03B21/14 , G03B21/204 , H05B33/00 , H05B33/10 , H05B33/14 , Y10T428/269
摘要： A wavelength conversion element includes a phosphor layer that includes phosphors and a binder. The thickness of a phosphor region obtained by multiplying the thickness of the phosphor layer by the volume concentration of the phosphor is equal to or larger than 15 μm.
摘要翻译：波长转换元件包括含有荧光体和粘合剂的荧光体层。通过将荧光体层的厚度乘以荧光体的体积浓度而获得的荧光体区域的厚度等于或大于15μm。

5. 发明授权

US11258996B2 Method of controlling display system and control device 有权
公开(公告)号：US11258996B2
公开(公告)日：2022-02-22
申请号：US17084725
申请日：2020-10-30
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi , Hiroyuki Ichieda , Shiki Furui
IPC分类号： G03B21/14 , H04N9/31 , G03B21/00
摘要： A method of controlling a display system including the steps of projecting, by one of the first projectors, a first image in one area, projecting, by one of the second projectors, a second image in the one area, estimating, by the control device, brightness of the plurality of first images and brightness of the plurality of second images, identifying, by the control device, a first dark image as the darkest image and a first adjustment target image, and identifying a second dark image as the darkest image and a second adjustment target image, and controlling, by the control device, a projector to thereby approximate the brightness of the first adjustment target image to the brightness of the first dark image, and controlling a projector to thereby approximate the brightness of the second adjustment target image to the brightness of the second dark image.

6. 发明授权

US09500941B2 Illumination device and projector 有权
标题翻译：照明装置和投影机
公开(公告)号：US09500941B2
公开(公告)日：2016-11-22
申请号：US14684817
申请日：2015-04-13
申请人： SEIKO EPSON CORPORATION
发明人： Koichi Akiyama , Akihiro Kashiwagi
IPC分类号： G03B21/20 , G02B27/48 , G02B27/28
CPC分类号： G03B21/208 , G02B27/283 , G02B27/48 , G03B21/2033 , G03B21/204 , G03B21/2066 , G03B21/2073
摘要： An illumination device includes a light source device adapted to emit a third light beam including a first component in a first polarization state, a polarization separation element to which the third light beam is input, a retardation element, and a diffusely reflecting element having a concavo-convex structure including a plurality of curved surfaces. The first component having passed through the retardation element via the polarization separation element, is then reflected by the diffusely reflecting element, then passed through the retardation element again, and then enters the polarization separation element. Thus, the fourth component in the second polarization state out of the first component is emitted from the illumination device via the polarization separation element.
摘要翻译：照明装置包括适于发射包括第一偏振态的第一分量的第三光束的光源装置，输入第三光束的偏振分离元件，延迟元件和具有凹面的漫反射元件包括多个弯曲表面的凸结构。通过偏振分离元件通过延迟元件的第一分量然后被漫反射元件反射，然后再次通过延迟元件，然后进入偏振分离元件。因此，第一分量中的第二偏振状态的第四分量经由偏振分离元件从照明装置发射。

7. 发明授权

US09860497B2 Illumination device and projector 有权
公开(公告)号：US09860497B2
公开(公告)日：2018-01-02
申请号：US15040641
申请日：2016-02-10
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi
IPC分类号： G03B21/20 , H04N9/31 , G02B5/02
CPC分类号： H04N9/3152 , G02B5/02 , G02B5/0205 , G02B5/0278 , G03B21/208 , H04N9/3161 , H04N9/3164
摘要： An illumination device includes a diffusion element and a light source device that emits a beam bundle including a first unit beam bundle to be incident on the diffusion element along a first direction and a second unit beam bundle to be incident on the diffusion element along a second direction. An angle formed by the first unit beam bundle with an optical axis of the beam bundle is greater than an angle formed by the second unit beam bundle with the optical axis, and the illumination device satisfies I2

8. 发明授权

US11640774B2 Display method for display system, display method for display apparatus, and display system 有权
公开(公告)号：US11640774B2
公开(公告)日：2023-05-02
申请号：US17879483
申请日：2022-08-02
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi , Makoto Shimazaki , Hirotaka Mochizuki
IPC分类号： G09G3/00 , G09G3/20
摘要： A display method includes, determining a first target value by correcting a first luminance value representing luminance at a first position in a first image based on a second luminance value representing luminance at a second position in the first image, displaying, by the display apparatus, on the display surface a first corrected image generated by correcting the first image in such a way that a luminance at the first position in the first image becomes the first target value, displaying, by the display apparatus, on the display surface a third corrected image generated by using a changed first target value obtained by changing the first target value based on a second target value based on a fourth luminance value representing luminance at a fourth position in the second image, when the second target value is smaller than the first target value.

9. 发明授权

US10474022B2 Illuminator and projector 有权
公开(公告)号：US10474022B2
公开(公告)日：2019-11-12
申请号：US16043704
申请日：2018-07-24
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi
IPC分类号： G03B21/20 , G03B21/28 , G03B33/12 , G02B27/10 , G02B5/02 , G02B27/14 , G02B3/00 , G02B27/09 , G02B27/28
摘要： An illuminator includes a light source apparatus that outputs first light containing a first polarized light component, an afocal system that includes a first lens and a second lens so arranged that optical axis directions thereof coincide with each other and reduces the light flux diameter of the first light, a polarization adjusting element that converts the first light, while transmitting the first light, into second light containing the first polarized light component and a second polarized light component the polarization direction of which is perpendicular to the polarization direction of the first polarized light component, and a polarization separation element that separates the second light into light formed of the first polarized light component and light formed of the second polarized light component. The polarization adjusting element is located between the first lens and the second lens.

10. 发明授权

US09206959B2 Wavelength conversion element, light source device, and projector 有权
标题翻译：波长转换元件，光源设备和投影机
公开(公告)号：US09206959B2
公开(公告)日：2015-12-08
申请号：US13758385
申请日：2013-02-04
申请人： SEIKO EPSON CORPORATION
发明人： Akihiro Kashiwagi , Shigeo Nojima , Akira Miyamae , Akira Egawa
IPC分类号： G03B21/20 , H04N9/31 , F21V9/16 , H05B33/14
CPC分类号： F21V9/30 , G03B21/204 , H04N9/3111 , H04N9/3158 , H05B33/14
摘要： A wavelength conversion element includes a substrate, and a fluorescent material layer disposed on the substrate. The volume concentration of the fluorescent material in the fluorescent material layer is equal to or higher than 15 vol %.
摘要翻译：波长转换元件包括基板和设置在基板上的荧光材料层。荧光体层的荧光体的体积浓度为15体积％以上。

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