US 11,693,206 B2
Lens apparatus and image pickup apparatus
Go Shibasaki, Tochigi (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 23, 2020, as Appl. No. 17/79,303.
Claims priority of application No. 2019-199108 (JP), filed on Oct. 31, 2019.
Prior Publication US 2021/0132324 A1, May 6, 2021
Int. Cl. G02B 7/02 (2021.01); H04N 5/225 (2006.01); G02B 7/04 (2021.01); H04N 23/55 (2023.01)
CPC G02B 7/026 (2013.01) [G02B 7/04 (2013.01); H04N 23/55 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A lens apparatus comprising:
a first barrel member including a first helicoid screw on an inner surface included therein;
a second barrel member including a second helicoid screw to be screwed together with the first helicoid screw on an outer surface, the second barrel member being movable along a direction of an axis of the first barrel member;
an urging member configured to urge the second helicoid screw against the first helicoid screw in a direction of a diameter of the first barrel member; and
a third barrel member including an outer surface which has a diameter smaller than a diameter of the second helicoid screw,
wherein the urging member is held by the second barrel member inside the second barrel member, and is in contact with the outer surface of the third barrel member.