US 12,429,680 B2
Objective lens unit and microscope
Yuya Kimura, Kyoto (JP); Mitsuhiro Yabu, Kyoto (JP); and Yusuke Mori, Kyoto (JP)
Assigned to SCREEN Holdings Co., Ltd., Kyoto (JP)
Filed by SCREEN Holdings Co., Ltd., Kyoto (JP)
Filed on Apr. 18, 2023, as Appl. No. 18/302,173.
Claims priority of application No. 2022-071750 (JP), filed on Apr. 25, 2022.
Prior Publication US 2023/0341671 A1, Oct. 26, 2023
Int. Cl. G02B 21/24 (2006.01); G02B 7/16 (2021.01); G02B 27/00 (2006.01)
CPC G02B 21/241 (2013.01) [G02B 7/16 (2013.01); G02B 21/248 (2013.01); G02B 27/0068 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An objective lens unit comprising:
an objective lens provided with a correction ring;
a first rotary member that is mounted on the objective lens and that rotates together with the correction ring;
a second rotary member that engages with the first rotary member to rotate the first rotary member; and
a drive section that rotates the second rotary member, wherein the first rotary member has an outer peripheral surface and a first engagement portion formed in the outer peripheral surface,
the second rotary member has a second engagement portion that is to engage with the first engagement portion,
the second engagement portion is disposed at a part in a circumferential direction of the second rotary member, and
the second rotary member rotates to be positioned at an engagement position or a retraction position, the engagement position being a position where the second engagement portion engages with the first engagement portion, the retraction position being a position where the second engagement portion retracts from the first engagement portion.