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1. 发明授权

US11131838B2 Optical system, and imaging apparatus and projecting apparatus having the same 有权
公开(公告)号：US11131838B2
公开(公告)日：2021-09-28
申请号：US16116737
申请日：2018-08-29
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara , Masatsugu Nakano
IPC分类号： G02B9/00 , G02B17/00 , G02B3/08 , G02B17/08 , G02B13/00 , H04N7/18 , B60Q9/00 , B60T7/22 , B60T8/17 , G02B13/18 , H04N5/225
摘要： An optical system 10 includes, in order from an enlargement side, a front group 1, an aperture diaphragm 3, and a rear group 2, the front group 1 including a refractive surface 11a convex toward the enlargement side, the rear group 2 including a concave reflective surface 12b, and Conditional Expressions of 0.7≤|Rl|/Ll≤1.5 and 2≤|Rm|/Lm≤7 are satisfied, where a curvature radius of the refractive surface 11a is Rl (mm), a distance between the refractive surface 11a and the aperture diaphragm 3 is Ll (mm), a curvature radius of the reflective surface 12b is Rm (mm), and a distance between the aperture diaphragm 3 and the reflective surface 12b is Lm (mm).

2. 发明申请

US20190011684A1 OPTICAL SYSTEM, AND IMAGING APPARATUS AND PROJECTING APPARATUS HAVING THE SAME 审中-公开
公开(公告)号：US20190011684A1
公开(公告)日：2019-01-10
申请号：US16116737
申请日：2018-08-29
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara , Masatsugu Nakano
IPC分类号： G02B17/08 , G02B13/18 , H04N7/18 , H04N5/225 , B60Q9/00 , B60T7/22 , B60T8/17
摘要： An optical system 10 includes, in order from an enlargement side, a front group 1, an aperture diaphragm 3, and a rear group 2, the front group 1 including a refractive surface 11a convex toward the enlargement side, the rear group 2 including a concave reflective surface 12b, and Conditional Expressions of 0.7≤|Rl|/Ll≤1.5 and 2≤|Rm|/Lm≤7 are satisfied, where a curvature radius of the refractive surface 11a is Rl (mm), a distance between the refractive surface 11a and the aperture diaphragm 3 is Ll (mm), a curvature radius of the reflective surface 12b is Rm (mm), and a distance between the aperture diaphragm 3 and the reflective surface 12b is Lm (mm).

3. 发明授权

US09417429B2 Image pick-up apparatus 有权
标题翻译：摄像装置
公开(公告)号：US09417429B2
公开(公告)日：2016-08-16
申请号：US14742572
申请日：2015-06-17
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara
IPC分类号： G02B9/08 , G02B13/18 , G11B7/135 , G02B9/60 , G02B6/06 , G02B27/00 , H04N5/357 , G02B13/06 , G02B13/00 , G02B9/62 , G02B5/00 , G11B7/1374
CPC分类号： G02B9/60 , G02B5/005 , G02B6/06 , G02B9/62 , G02B13/0045 , G02B13/06 , G02B13/18 , G02B27/0025 , G11B7/1374 , H04N5/2254 , H04N5/3572 , H04N5/3696
摘要： An image pick-up apparatus includes an imaging optical system including a plurality of lenses and a diaphragm arranged between the lenses, the imaging optical system forming an image on an image surface; and an image sensor that detects the image formed on the image surface. The imaging optical system includes a front lens group on an object side with respect to the diaphragm, and a rear lens group on the image surface side with respect to the diaphragm. A lens surface having the highest power in the front lens group and a lens surface having the highest power in the rear lens group are concentric surfaces. The front lens group includes a plano-concave lens whose light-exiting-side surface has a concave surface and whose light-incident-side surface has power φr that satisfies the following expression: - 0.05 ≤ ϕ ⁢ ⁢ r ϕ ⁢ ⁢ o ≤ 0.05 where φo is the power of the entire imaging optical system.
摘要翻译：一种图像拾取装置包括：成像光学系统，包括多个透镜;以及光阑，布置在所述透镜之间，所述成像光学系统在图像表面上形成图像; 以及图像传感器，其检测形成在图像表面上的图像。成像光学系统包括相对于隔膜的物体侧的前透镜组和相对于隔膜的图像表面侧上的后透镜组。在前透镜组中具有最高功率的透镜表面和在后透镜组中具有最高功率的透镜表面是同心表面。前透镜组包括光出射侧表面具有凹面并且其光入射侧表面具有满足以下表达式的功率φr的平凹透镜： - 0.05≤φ⁢rφ⁢o o 0.05，其中φo是整个成像光学系统的功率。

4. 发明申请

US20150341560A1 IMAGE CAPTURING APPARATUS 有权
标题翻译：图像捕获设备
公开(公告)号：US20150341560A1
公开(公告)日：2015-11-26
申请号：US14758209
申请日：2013-12-19
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara
IPC分类号： H04N5/232 , G06T7/20 , G06T7/40 , G06T7/00
CPC分类号： H04N5/23248 , G01C3/08 , G06T7/11 , G06T7/187 , G06T7/215 , G06T7/571 , G06T7/90 , G06T2207/10004 , G06T2207/10016 , G06T2207/10024 , G06T2207/10028 , G06T2207/10148 , G06T2207/20201 , G06T2207/20224 , H04N5/23212 , H04N5/23264
摘要： To reduce the difference among a plurality of images acquired due to an object shake or hand shake. An image capturing apparatus 10 includes an imaging optical system 11 and an image sensor 14 that acquires an image of light coming from the imaging optical system 11. The imaging optical system 11 has an aperture stop 12 including a first aperture and a second aperture. The image sensor 11 has first pixels and second pixels. The central axis of the first aperture and the central axis of the second aperture are aligned with each other. The first aperture has a first optical filter that codes light passing therethrough with a first code. The first pixels receive first coded light coded with the first code. The second pixels do not receive the first coded light and receive light other than the first coded light.
摘要翻译：为了减少由于物体抖动或手抖动而获取的多个图像之间的差异。摄像装置10包括摄像光学系统11和拍摄来自成像光学系统11的光的图像的图像传感器14.成像光学系统11具有包括第一孔和第二孔的孔径光阑12。图像传感器11具有第一像素和第二像素。第一孔的中心轴线和第二孔的中心轴线彼此对准。第一光圈具有第一光学滤光器，用第一代码对穿过其中的光进行编码。第一像素接收用第一码编码的第一编码光。第二像素不接收第一编码光并接收第一编码光以外的光。

5. 发明授权

US11422376B2 Display apparatus and head mounted display 有权
公开(公告)号：US11422376B2
公开(公告)日：2022-08-23
申请号：US16890805
申请日：2020-06-02
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara
IPC分类号： G02B27/01 , F21V8/00
摘要： A display apparatus includes a guide element, and an incident optical system causing light from a display element to enter the guide element. The guide element includes a first light guide part guiding the light from the incident optical system in a first direction and a second light guide part guiding the light from the first light guide part in a second direction intersecting with the first direction. The first light guide part has mirrors disposed along the first direction and guiding the light to the second light guide part by reflection. The mirrors include a first mirror and a second mirror. Each of the first and second mirrors has a first reflection region and a second reflection region having a higher reflectance than the first reflection region. Light having transmitted through the first reflection region of the first mirror enters the second reflection region of the second mirror.

6. 发明申请

US20220187596A1 OPTICAL SYSTEM AND DISPLAY APPARATUS 有权
公开(公告)号：US20220187596A1
公开(公告)日：2022-06-16
申请号：US17548999
申请日：2021-12-13
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Yamamoto , Keiichiro Ishihara
IPC分类号： G02B27/00 , G02B27/01
摘要： An optical system guides a light beam from a display element to an exit pupil. The optical system includes a first optical element including a transmission surface, a reflection-transmission surface, and a reflection surface, and a negative lens including a concave surface on an exit pupil side. The light beam from the display element heads toward the exit pupil via the transmission surface, the reflection-transmission surface, the reflection surface, the reflection-transmission surface, and the negative lens in this order. A predetermined condition is satisfied.

7. 发明授权

US11209648B2 Projection optical system and display apparatus having the same 有权
公开(公告)号：US11209648B2
公开(公告)日：2021-12-28
申请号：US16934284
申请日：2020-07-21
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Yamamoto , Keiichiro Ishihara
IPC分类号： G02B27/00 , G02B27/01
摘要： An optical system guides a light beam from a display element, the optical system comprising a plurality of lenses and an optical element. The optical element includes an entrance surface which the light beam from the plurality of lenses enters, a reflection surface configured to reflect the light beam, and an emission surface from which the light beam is emitted toward an exit pupil. The light beam from the display element enters the optical element via the plurality of lenses, is reflected a plurality of times inside the optical element, and heads for the exit pupil. A predetermined condition is satisfied.

8. 发明授权

US10582123B2 Imaging apparatus 有权
公开(公告)号：US10582123B2
公开(公告)日：2020-03-03
申请号：US16047201
申请日：2018-07-27
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara
IPC分类号： H04N5/232 , H04N9/04 , G06T3/40 , G06T5/00 , G06T5/50 , H04N5/225 , H04N5/369 , H01L27/146 , H04N5/349
摘要： An imaging apparatus includes a plurality of imaging optical systems, and an imaging device having a plurality of imaging regions, each corresponding to one of the plurality of imaging optical systems. The plurality of imaging optical systems are arranged such that (2M+1)×(2N+1) imaging optical systems are arranged two-dimensionally in a horizontal direction and a vertical direction, where M and N are integers of 1 or more. A difference between a shift amount of the reference imaging optical system and a shift amount of an imaging optical system other than the reference imaging optical system is 2×Km/(2M+1) pixels in a horizontal direction and 2×Kn/(2N+1) pixels in a vertical direction, where Km is an integer satisfying −M≤Km≤M, and Kn is an integer satisfying −N≤Kn≤N.

9. 发明申请

US20190045115A1 IMAGING APPARATUS 审中-公开
公开(公告)号：US20190045115A1
公开(公告)日：2019-02-07
申请号：US16047201
申请日：2018-07-27
申请人： CANON KABUSHIKI KAISHA
发明人： Keiichiro Ishihara
IPC分类号： H04N5/232 , H04N9/04 , G06T3/40 , G06T5/00 , G06T5/50 , H04N5/225
CPC分类号： H04N5/23232 , G06T3/4015 , G06T3/4053 , G06T5/003 , G06T5/50 , H01L27/14618 , H01L27/14621 , H04N5/2254 , H04N5/349 , H04N5/3696 , H04N9/0455 , H04N9/04557
摘要： An imaging apparatus includes: a plurality of imaging optical systems arranged two-dimensionally; and an imaging device having a plurality of imaging regions each including a plurality of pixels, each of the imaging regions corresponding to one of the plurality of imaging optical systems, wherein at least a part of the plurality of imaging optical systems are arranged shifted with respect to a center of the corresponding imaging region by a shift amount different from that of another one of the plurality of imaging optical systems.

10. 发明授权

US09576370B2 Distance measurement apparatus, imaging apparatus, distance measurement method and program 有权
标题翻译：距离测量装置，成像装置，距离测量方法和程序
公开(公告)号：US09576370B2
公开(公告)日：2017-02-21
申请号：US14617972
申请日：2015-02-10
申请人： CANON KABUSHIKI KAISHA
发明人： Satoru Komatsu , Keiichiro Ishihara
IPC分类号： G06K9/00 , G06T7/00
CPC分类号： G06T7/593 , G06T2207/10024
摘要： A distance measurement method for calculating distance information from a first image and a second image that are image-captured with different image-capturing parameters. A setting step sets a first local region located in the first image including a distance calculation target pixel, and a second local region located in the second image corresponding to the first local region. An extraction step extracts a plurality of shift regions, which are regions of which a shift amount from the second local region is within a predetermined range. A correlation value is calculated between the first local region and each of the plurality of shift regions. A decision step determines a correlation value used for calculating distance information, based on the plurality of correlation values calculated in the first calculation step. The distance information on the distance calculation target pixel is calculated, based on the correlation value determined in the decision step.
摘要翻译：一种距离测量方法，用于从具有不同图像捕获参数的图像捕获的第一图像和第二图像计算距离信息。设置步骤设置位于包括距离计算目标像素的第一图像中的第一局部区域和位于对应于第一局部区域的第二图像中的第二局部区域。提取步骤提取作为来自第二局部区域的偏移量在预定范围内的区域的多个移位区域。在第一局部区域和多个移位区域中的每一个之间计算相关值。基于在第一计算步骤中计算的多个相关值，决定步骤确定用于计算距离信息的相关值。基于在判定步骤中确定的相关值来计算距离计算对象像素的距离信息。

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