公开(公告)号：US20180364466A1

公开(公告)日：2018-12-20

申请号：US16006543

申请日：2018-06-12

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE ,  Masaru KOBAYASHI ,  Kazuhiko YAMANOUCHI ,  Toru KANEDA ,  Masaki AKAHANE

IPC: G02B21/02 ,  G02B9/64

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 satisfies conditional expressions below. 0.2≤NAob≤1  (1) 2.9 mm≤D0×NAob≤30 mm  (2) 30 mm≤L≤70 mm  (3) 0.0001≤RMSh/λh≤0.035  (4) NAob is a numerical aperture on an object side of the objective. D0 is a distance on an optical axis between an object plane and a lens surface of the objective that is situated closest to the object side. L is a distance on the optical axis between the object plane and a lens surface of the objective that is situated closest to the image side. RMSh is an axial RMS wave aberration with respect to the h line. λh is a wavelength of the h line.

公开(公告)号：US20130100323A1

公开(公告)日：2013-04-25

申请号：US13647022

申请日：2012-10-08

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE

IPC: H04N5/232 ,  G02B3/00 ,  H04N5/335

CPC classification number: H04N5/23212 ,  G02B3/00 ,  G02B13/004 ,  G02B13/009 ,  G02B15/173 ,  H04N5/335

Abstract: An image forming optical system of four lenses includes in order from an object side, a first lens having a positive refractive power, which is a biconvex lens, a second lens having a negative refractive power, of which, an image-side surface is a concave surface, a third lens having a positive refractive power, which is meniscus-shaped with a concave surface directed toward the object side, a fourth lens having a negative refractive power, of which, an image-side surface is a concave surface, and an aperture stop which is disposed nearest to the object side. The image forming optical system satisfies predetermined conditional expressions.

Abstract translation: 四个透镜的成像光学系统包括从物体侧开始的具有正折光力的第一透镜，其是双凸透镜，具有负折光力的第二透镜，其中图像侧表面为 凹面，具有正屈光力的第三透镜，其具有朝向物体侧的凹面的弯月面形状，具有负屈光力的第四透镜，其中图像侧表面是凹面，以及 设置在最靠近物体侧的孔径光阑。 成像光学系统满足预定的条件表达式。

公开(公告)号：US20170261736A1

公开(公告)日：2017-09-14

申请号：US15449138

申请日：2017-03-03

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE

IPC: G02B21/33 ,  G02B27/00 ,  G02B21/02

CPC classification number: G02B21/33 ,  G02B21/02 ,  G02B27/0025

Abstract: An immersion objective includes a first lens group, with a positive refractive power, that converts divergent light from an object point into convergent light and a second lens group, with a negative refractive power, that is arranged closer to the image than is the first lens group. The immersion objective satisfies the conditional expression below where WD is a working distance of the immersion objective and D is a distance on an optical axis of the immersion objective from the observation target plane to the lens surface closest to the image in the immersion objective. 0.11≦WD/D≦0.7

公开(公告)号：US20130242156A1

公开(公告)日：2013-09-19

申请号：US13789969

申请日：2013-03-08

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro AMANAI ,  Kenichiro ABE ,  Takuya OTSU ,  Takashi FUJIKURA

IPC: G02B13/04

CPC classification number: G02B13/04 ,  G02B15/177

Abstract: A zoom lens includes in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power, and at the time of zooming, the first lens group is fixed, the second lens group moves, the third lens group moves, and the fourth lens group is fixed. The first lens group includes in order from the object side, a negative lens, a reflecting optical element, and a positive lens. The second lens group includes in order from the object side, an aperture stop, a positive lens, a cemented lens having a negative refractive power, and a positive lens. The cemented lens includes a positive lens and a negative lens.

Abstract translation: 变焦透镜从物体侧依次包括具有负折光力的第一透镜组，具有正折光力的第二透镜组，具有负折光力的第三透镜组，以及具有正折射率的第四透镜组 电源，并且在变焦时，第一透镜组被固定，第二透镜组移动，第三透镜​​组移动，并且第四透镜组被固定。 第一透镜组从物体侧依次包括负透镜，反射光学元件和正透镜。 第二透镜组从物体侧依次包括孔径光阑，正透镜，具有负屈光力的胶合透镜和正透镜。 胶合透镜包括正透镜和负透镜。

公开(公告)号：US20160282592A1

公开(公告)日：2016-09-29

申请号：US15177050

申请日：2016-06-08

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE ,  Takahiro AMANAI

IPC: G02B15/16 ,  H04N5/225 ,  G02B21/36 ,  G02B27/00 ,  G02B21/02 ,  G02B21/26

CPC classification number: G02B15/16 ,  G02B5/005 ,  G02B9/60 ,  G02B13/0045 ,  G02B13/18 ,  G02B15/14 ,  G02B15/163 ,  G02B15/167 ,  G02B15/20 ,  G02B21/025 ,  G02B21/26 ,  G02B21/361 ,  G02B27/0025 ,  H04N5/2254

Abstract: A variable magnification optical system is an optical system in which, a magnification ratio varies from a lower magnification end to a high magnification end, and includes at least a first lens unit having a positive refractive power, which is disposed nearest to an object, and a second lens unit having a positive refractive power, which is disposed on an image side of the first lens unit. At the time of varying magnification, a distance between the first lens unit and the second lens unit changes, and the following conditional expression (1) is satisfied: 0

公开(公告)号：US20190324259A1

公开(公告)日：2019-10-24

申请号：US16385680

申请日：2019-04-16

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE ,  Atsushi YONETANI

IPC: G02B21/36 ,  G02B7/02

Abstract: An imaging optical system includes an objective, an image-formation optical system, and an image sensor, wherein an object, the objective, the image-formation optical system, and the image sensor are arranged in this order, the objective includes: a first lens group that includes a meniscus lens component that is the closest to an image among the first lens group, the meniscus lens component having a convex surface facing the object; and a second lens group that is closer to the image than the first lens group is, and the imaging optical system satisfies the following conditional expression: 4×106≤PXn≤1×1010  (1) where PXn indicates the number of pixels included in a region on the image sensor in which an MTF specific to an e line is 40% or higher at a spatial frequency of 750×NAi [LP/mm], and NAi indicates the numerical aperture of the image side of the imaging optical system.

公开(公告)号：US20190324246A1

公开(公告)日：2019-10-24

申请号：US16284476

申请日：2019-02-25

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE

IPC: G02B21/02 ,  G02B27/00 ,  G02B9/10

Abstract: A dry objective including the first lens group having a positive refractive power that converts a divergent pencil of light from an object point into a convergent pencil of light and the second lens group having a negative refractive power. The objective includes a moving lens component that moves along an optical axis and satisfies the following conditional expressions of: 0.85≤NAob

公开(公告)号：US20190324245A1

公开(公告)日：2019-10-24

申请号：US16283793

申请日：2019-02-24

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo YONEMARU ,  Kenichiro ABE

IPC: G02B21/02 ,  G02B13/00

Abstract: A microscope objective includes: a first lens group that has a positive refractive power and includes a first cemented lens; and a second lens group, the first lens group and the second lens group having concave surfaces adjacent to and facing each other. The second lens group includes: at least one lens component that has a negative refractive power overall; a second cemented lens; and a single lens having a positive refractive power. An axial marginal light ray height is maximized at the lens surface of the microscope objective that is the closest to an image. The microscope objective satisfies the following conditional expression: −0.38≤Fs/FC2≤0.38  (1) where FC2 indicates the focal length of the second cemented lens for an e line, and Fs indicates the focal length of the single lens for the e line.

公开(公告)号：US20160116724A1

公开(公告)日：2016-04-28

申请号：US14885223

申请日：2015-10-16

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE

IPC: G02B21/02 ,  G02B13/18 ,  G02B9/64 ,  G02B21/36

CPC classification number: G02B21/02 ,  G02B13/24 ,  G02B21/33

Abstract: An objective for a microscope includes, in order from an object side, a first lens group with positive refractive power, a second lens group with positive refractive power, and a third lens group with negative refractive power. When NA represents a numerical aperture of the objective, FN represents a field number of the objective, β represents a magnification of the objective, ε represents an Airy disk diameter on an axis to a d-line of the objective, φmax represents a maximum value of an effective diameter of a lens included in the objective, and hexp represents a radius of an exit pupil of the objective, the objective satisfies the following conditional expressions: 0.8≦NA≦1.5  (1) 1000≦FN/|β|/ε≦10000  (2) 1.7≦φmax/2/hexp/NA≦4  (3)

Abstract translation: 显微镜的目的在于，从物体侧开始，具有正屈光力的第一透镜组，具有正折光力的第二透镜组，以及具有负屈光力的第三透镜组。 当NA表示物镜的数值孔径时，FN表示物镜的场号，＆bgr; 代表目标的放大倍数， 表示物镜的d线的轴线上的通气盘直径，＆phgr; max表示物镜中包含的透镜的有效直径的最大值，hexp表示物镜的出射光瞳的半径， 目标满足以下条件表达式：0.8＆nlE; NA＆nlE; 1.5（1）1000＆nlE; FN / |＆bgr; | /＆egr;＆nlE; 10000（2）1.7＆nlE;＆phgr; max / 2 / hexp /

公开(公告)号：US20190324243A1

公开(公告)日：2019-10-24

申请号：US16385836

申请日：2019-04-16

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE

IPC: G02B21/00 ,  G02B27/00 ,  G02B9/64

Abstract: An objective includes: a first lens group that includes a meniscus lens component that is the closest to an image among lens components of the first lens group, the meniscus lens component having a convex surface facing an object; and a second lens group that is closer to the image than the first lens group is, and the objective satisfies the following conditional expressions: 0≤|Δz1|/DOFe≤1.5  (1) 0≤|Δz2|/DOFe≤2  (2) where Δz1 indicates a difference between a h-line minimization position and an e-line minimization position; Δz2, a difference between a position on then optical axis at which an RMS wavefront aberration in light having a wavelength of 800 nm is minimized and the e-line minimization position; DOFe, a depth of focus for the e line.