-
公开(公告)号：US20190302429A1
公开(公告)日：2019-10-03
申请号：US16442463
申请日：2019-06-15
Inventor： Masayuki AIHARA , Shigenori YATSURI , Yoshio MATSUMURA
IPC: G02B13/18 , H04N5/225 , G01C3/10 , G02B13/00 , G01C11/06 , G06T7/55 , G02B3/02 , G01C11/30 , G01C11/02 , G01B11/24
Abstract: An imaging device having an optical system including a free-form surface lens with rotationally asymmetric shape that forms an image on an imaging surface such that a resolution of a first region in front of the predetermined region is higher than a resolution of a second region at a lateral side of the predetermined region. The free-form surface lens has a shape that forms the image such that a resolution of a portion at a predetermined first distance away from a center of the first region in a vertical direction is different from a resolution of a portion at the predetermined first distance away from the center of the first region in a horizontal direction, the vertical direction being orthogonal to the horizontal direction, in the imaging element, in which the first region and the second region are aligned.
-
公开(公告)号：US20180338095A1
公开(公告)日：2018-11-22
申请号：US15971370
申请日：2018-05-04
Inventor： Masayuki AIHARA , Yoshio MATSUMURA , Shigenori YATSURI , Hiroyuki SHOBAYASHI
CPC classification number: H04N5/2258 , G06K9/00791 , G06K9/209 , G06K2009/2045 , H04N5/2254 , H04N5/23232 , H04N5/3696
Abstract: An imaging system includes first imaging device (10a) and second imaging device (10b). First imaging device (10a) includes a first optical system having a first view angle, and a first imaging element. Second imaging device (10b) includes a second optical system having a second view angle that is wider than the first view angle, and a second imaging element. The second optical system is configured to form an image including a first region and a second region, which do not overlap each other, such that a resolution in the second region is higher than a resolution in the first region corresponding to an imaging range of the first view angle, in an imaging surface of a subject image.
-
公开(公告)号：US20210096335A1
公开(公告)日：2021-04-01
申请号：US17119545
申请日：2020-12-11
Inventor： Qinghua ZHAO , Yoshio MATSUMURA
Abstract: An imaging optical system having an image circle formed on an imaging element includes: a plurality of lens elements arranged from an object side to an image plane side, and a diaphragm arranged between the plurality of lens elements, wherein the plurality of lens elements includes a freeform lens having a freeform surface that is asymmetrical with respect to a long side direction and a short side direction which cross with each other with a diameter of the image circle in the long side direction being larger than a diameter of the image circle in the short side direction, wherein at least two freeform lenses are located on the object side of the diaphragm, wherein the imaging optical system satisfies a condition based on a summation for freeform surfaces of freeform lenses located on the object side of the diaphragm.
-
公开(公告)号：US20220214528A1
公开(公告)日：2022-07-07
申请号：US17703192
申请日：2022-03-24
Inventor： Yoshio MATSUMURA , Hiroyuki SHOBAYASHI , Takuya IMAOKA , Tomoko IIYAMA
Abstract: A lens system includes lens elements and a diaphragm. The lens elements include freeform lenses each having a freeform surface asymmetrical with respect to first and second directions. At least one freeform lens is placed on the image plane side of the diaphragm. The lens system satisfies a following conditional expression (1); 0.0075
-
公开(公告)号：US20180160052A1
公开(公告)日：2018-06-07
申请号：US15888002
申请日：2018-02-03
Inventor： Masayuki AIHARA , Shigenori YATSURI , Yoshio MATSUMURA
CPC classification number: H04N5/265 , B60R1/00 , B60R11/04 , B60R2300/10 , G02B3/02 , G02B13/18 , G06K9/00791 , H04N5/2254 , H04N5/23232 , H04N5/23238 , H04N5/247 , H04N7/18 , H04N7/183
Abstract: An imaging system includes: a first imaging apparatus including a first imaging element and a first optical system; and a generator that generates an image based on image data acquired from the first imaging element. The first optical system includes a first free-form surface lens that has a shape that allows an image to be formed on the first imaging element such that a resolution is different between a portion of a predetermined region and another portion of the predetermined region, the resolution being defined as a total number of imaging pixels that capture an image within a unit field angle on a horizontal plane.
-
Patent Agency Ranking
公开(公告)号：US20180120545A1
公开(公告)日：2018-05-03
申请号：US15854797
申请日：2017-12-27
Inventor： Masayuki AIHARA , Shigenori YATSURI , Yoshio MATSUMURA
CPC classification number: G02B13/18 , G01B11/24 , G01C3/10 , G01C11/02 , G01C11/06 , G01C11/30 , G02B3/02 , G02B13/0045 , G06T7/55 , H04N5/2254
Abstract: A distance measurement system includes: an imaging device including an imaging element where a plurality of imaging pixels are arranged in matrix, and an optical system forming an image of a predetermined region on an imaging surface of the imaging element; and a distance measurer determining a distance to a target object based on data of the image obtained from the imaging element, wherein the optical system includes a free-form surface lens having a rotationally asymmetric shape that forms the image on the imaging surface such that a resolution of a first region in front of the region is higher than that of a second region at a lateral side of the region, each of the resolutions being a ratio of the number of ones of the imaging pixels used to pick up an image included in per unit angle of view to a total number of the imaging pixels.
-
公开(公告)号：US20210096346A1
公开(公告)日：2021-04-01
申请号：US17117658
申请日：2020-12-10
Inventor： Yoshio MATSUMURA , Hiroyuki SHOBAYASHI
Abstract: An imaging optical system is an optical system having an image circle formed on an imaging element. The imaging optical system includes: a plurality of lens elements arranged from an object side to an image plane side, and a diaphragm arranged between the plurality of lens elements. The plurality of lens elements includes a freeform lens having a freeform surface that is asymmetrical between a first direction and a second direction which cross with each other. At least two freeform lenses are located on the object side of the diaphragm.
-
公开(公告)号：US20210011263A1
公开(公告)日：2021-01-14
申请号：US17029608
申请日：2020-09-23
Inventor： Yoshio MATSUMURA , Hiroyuki SHOBAYASHI
Abstract: A lens system that forms an image on an imaging element, includes: first to third lens element arranged in order; a diaphragm; and a lens element on the image surface side. At least one of the first and second lens elements has a free-curved surface, and one of the first and second lens elements has free-curved surfaces on both sides. The third lens element has free-curved surfaces on both sides. The first lens element has a convex shape, toward the object side, of a surface facing the object side. The second lens element has a convex shape, toward the object side, of a surface facing the image surface side. The third lens element has a convex shape, toward the image surface side, of a surface facing the object side. The lens element on the image surface side has, at least on the object side, a free-curved surface.
-
公开(公告)号：US20160178875A1
公开(公告)日：2016-06-23
申请号：US14972150
申请日：2015-12-17
Inventor： Yoshio MATSUMURA , Masafumi SUEYOSHI , Yusuke NIHEI
CPC classification number: H04N5/2254 , G02B13/18 , G02B15/17
Abstract: A lens system, an interchangeable lens apparatus, and a camera system each include a front group including a first focus lens group that moves with respect to an image surface in focusing from an infinity in-focus condition to a close-object in-focus condition; a rear group including a second focus lens group that moves with respect to the image surface in focusing, the front group and the rear group being located in order from an object side to an image side; a fixed lens group including at least one positive power lens element, the fixed lens group being located between the front group and the rear group and fixed with respect to the image surface in focusing; and an aperture diaphragm. The positive power lens in the fixed lens group satisfies dPgF>0.015 (dPgF is an anomalous dispersibility in a g-line and an F-line of the lens element).
Abstract translation: 透镜系统，可互换透镜装置和照相机系统各自包括前组，其包括第一聚焦透镜组，所述第一聚焦透镜组相对于图像表面在从无限远对焦状态聚焦到相对对焦的对焦条件下移动 ; 包括在聚焦时相对于图像表面移动的第二聚焦透镜组的后组，所述前组和所述后组从物体侧到图像侧依次定位; 包括至少一个正功率透镜元件的固定透镜组，所述固定透镜组位于所述前组和所述后组之间，并且在聚焦时相对于所述图像表面固定; 和孔径光阑。 固定透镜组中的正功率透镜满足dPgF> 0.015（dPgF是透镜元件的g线和F线的异常分散性）。
-
公开(公告)号：US20230393384A1
公开(公告)日：2023-12-07
申请号：US18235450
申请日：2023-08-18
Inventor： Takao YAMANAKA , Yoshio MATSUMURA
CPC classification number: G02B25/001 , G02B17/0856
Abstract: An eyepiece optical system has an optical axis for guiding a light beam between a pupil of a user and a display surface, and includes: a first lens element having, on a display side, a polarizing reflective surface reflecting or transmitting an incident light beam according to polarization of the incident light beam; and a second lens element disposed between the first lens element and the display surface, and having a partial reflection surface reflecting a part of the incident light beam and transmitting a remaining part thereof. The first lens element has, on a pupil side, an aspherical surface including a convex region having a convex shape opposite to the polarizing reflective surface with the optical axis being positioned therein. The aspherical surface satisfies 0.05
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.018 seconds)
