公开(公告)号：US20180113293A1

公开(公告)日：2018-04-26

申请号：US15784725

申请日：2017-10-16

Applicant: OLYMPUS CORPORATION

Inventor： Kenichiro ABE ,  Hirokazu KONISHI ,  Masahiro SAKAKURA ,  Takashi KASAHARA ,  Yuso FUJITA

IPC: G02B21/02 ,  G02B9/18

CPC classification number: G02B21/025 ,  G02B9/18 ,  G02B21/02

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≤dol/hol≤0.1   (1) 0.005≤hmin/hl≤0.72   (2) 10 mm≤L≤100 mm   (3) 0.1≤L/f≤31   (4) when do1is 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.

公开(公告)号：US20130222920A1

公开(公告)日：2013-08-29

申请号：US13771967

申请日：2013-02-20

Applicant: Olympus Corporation

Inventor： Yuso FUJITA

IPC: G02B21/02

CPC classification number: G02B21/02

Abstract: A microscope objective lens includes, in an order starting from an object side, a first lens group having a positive power, a second lens group having a positive power, a third lens group having a negative power, and a fourth lens group having a positive power. The second lens group is configured to move in an optical axis direction between the first lens group and the third lens group so as to correct a variation in an aberration caused by a thickness of a cover glass. The following conditions are satisfied: 0.65

Abstract translation: 显微镜物镜按照从物体侧开始的顺序包括具有正光焦度的第一透镜组，具有正光焦度的第二透镜组，具有负光焦度的第三透镜组和具有负光焦度的第四透镜组 功率。 第二透镜组被构造成在第一透镜组和第三透镜组之间沿光轴方向移动，以校正由玻璃罩的厚度引起的像差的变化。 满足以下条件：0.65