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公开(公告)号：US10598911B2
公开(公告)日：2020-03-24
申请号：US15784725
申请日：2017-10-16
Applicant: OLYMPUS CORPORATION
Inventor： Kenichiro Abe , Hirokazu Konishi , Masahiro Sakakura , Takashi Kasahara , Yuso Fujita
Abstract: An objective includes a first lens group that has a positive refractive power and a second lens group that has a negative refractive power. The objective includes a first negative lens and satisfies 0.005≤do1/ho1≤0.1 (1) 0.005≤hmin/hl≤0.72 (2) 10 mm≤L≤100 mm (3) 0.1≤L/f≤31 (4) when do1 is a thickness of the first negative lens, ho1 is an axial marginal ray height on a lens surface on the object side of the first negative lens, hmin is a minimum value of an axial marginal ray height in the second lens group, hl is a height of an axial marginal ray on a lens surface of the objective that is situated closest to the image side, L is a length of the objective, and f is a focal length of the objective.
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公开(公告)号：US09709790B2
公开(公告)日：2017-07-18
申请号：US14508806
申请日：2014-10-07
Applicant: OLYMPUS CORPORATION
Inventor： Hirokazu Konishi
CPC classification number: G02B21/33 , G02B27/0068
Abstract: An immersion microscope objective includes, a first lens group, a second lens group, and a third lens group, wherein the first lens group has a positive refractive power and includes a first cemented lens disposed nearest to the object side in the first lens group, the second lens group includes a second cemented lens, the third lens group includes a lens component that has a positive refractive power and changes a divergent light beam incident from the second lens group to a convergent light beam, two lens components that change the convergent light beam to a divergent light beam, and a lens component that has a positive refractive power and changes the divergent light beam to a parallel light beam and emits the parallel light beam, and the following conditional expressions (1) is satisfied: 60 mm2≦d0×f×NAo≦500 mm2 (1).
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Patent Agency Ranking
公开(公告)号：US09696524B2
公开(公告)日：2017-07-04
申请号：US15001791
申请日：2016-01-20
Applicant: OLYMPUS CORPORATION
Inventor： Shinichi Mihara , Hirokazu Konishi , Toyoharu Hanzawa , Masahito Watanabe , Atsujiro Ishii , Tetsuhide Takeyama , Ayami Imamura
CPC classification number: G02B13/0065 , G02B13/0045 , G02B13/006 , G02B13/007 , G02B13/0075 , G02B13/009 , G02B15/14 , G02B15/16 , H04N5/2253 , H04N5/2254 , H04N5/23238 , H04N5/23296
Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-banding zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.
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公开(公告)号：US09274321B2
公开(公告)日：2016-03-01
申请号：US14505246
申请日：2014-10-02
Applicant: OLYMPUS CORPORATION
Inventor： Shinichi Mihara , Hirokazu Konishi , Toyoharu Hanzawa , Masahito Watanabe , Atsujiro Ishii , Tetsuhide Takeyama , Ayami Imamura
CPC classification number: G02B13/0065 , G02B13/0045 , G02B13/006 , G02B13/007 , G02B13/0075 , G02B13/009 , G02B15/14 , G02B15/16 , H04N5/2253 , H04N5/2254 , H04N5/23238 , H04N5/23296
Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.
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公开(公告)号：US11029507B2
公开(公告)日：2021-06-08
申请号：US16001575
申请日：2018-06-06
Applicant: OLYMPUS CORPORATION
Inventor： Hirokazu Konishi
Abstract: An observation device 100 includes an objective 2a, camera 3, an observation scope changing device, and a control device. The objective 2a having from 4× to 20× and including a positive lens group forms an image with light from sample S. The lens group includes a single lens L1 having a concave surface on an object side and a variable aperture diaphragm 4. The camera 3 converts the image into an image signal. The observation scope changing device performs electronic scaling on the image signal and performs an observation scope changing process. The control device controls the diaphragm 4 in accordance with the observation scope changing process. The observation device 100 satisfies a conditional expression is satisfied, 3≤|fa/fGS|≤10 where fa is a focal length of single lens L1 and fGS is a focal length of a lens group from an object plane to the diaphragm 4.
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公开(公告)号：US10324269B2
公开(公告)日：2019-06-18
申请号：US15782104
申请日：2017-10-12
Applicant: OLYMPUS CORPORATION
Inventor： Hirokazu Konishi
Abstract: An immersion objective has a numerical aperture of 1.42 or higher, and includes in order from the object side a positive first lens group, a positive second lens group, and a negative third lens group. The first lens group includes a first cemented lens that includes a plano-convex lens and a first meniscus lens, and a positive lens. The second lens group includes a plurality of cemented lenses. The third lens group includes in order from the object side a second cemented lens that includes a positive lens and a negative lens, a negative lens that has a concave surface facing the object side, and a positive lens. When H is a maximum height of an axial marginal ray, f is a focal length of the objective, and NAob is the numerical aperture, the objective satisfies a conditional expression below 3.5≤(H/f)×NAob≤5.2 (1).
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公开(公告)号：US10031322B2
公开(公告)日：2018-07-24
申请号：US15608421
申请日：2017-05-30
Applicant: OLYMPUS CORPORATION
Inventor： Shinichi Mihara , Hirokazu Konishi , Toyoharu Hanzawa , Masahito Watanabe , Atsujiro Ishii , Tetsuhide Takeyama , Ayami Imamura
CPC classification number: G02B13/0065 , G02B13/0045 , G02B13/006 , G02B13/007 , G02B13/0075 , G02B13/009 , G02B15/14 , G02B15/16 , H04N5/2253 , H04N5/2254 , H04N5/23238 , H04N5/23296
Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.
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