US 11,656,426 B2
Lens apparatus and imaging apparatus
Kota Asano, Utsunomiya (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 18, 2019, as Appl. No. 16/515,447.
Claims priority of application No. JP2018-136104 (JP), filed on Jul. 19, 2018; and application No. JP2018-136105 (JP), filed on Jul. 19, 2018.
Prior Publication US 2020/0026024 A1, Jan. 23, 2020
Int. Cl. G02B 7/02 (2021.01); G03B 17/14 (2021.01)
CPC G02B 7/026 (2013.01) [G03B 17/14 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A lens apparatus comprising:
a fixed member having one of a click generator and a groove part in which a groove is formed;
an operation ring having the other of the click generator and the groove part, and rotatable relative to the fixed member;
a click detector configured to detect a relative position between the click generator and the groove part, the click detector including a first light shielding plate disposed on the operation ring and having first light shielding portions, and a first light detector disposed on the fixed member; and
a rotation detector configured to detect rotation of the operation ring, the rotation detector including a second light shielding plate disposed on the operation ring and having a second light shielding portion, and a second light detector and a third light detector disposed on the fixed member,
wherein the groove part has groove portions and non-groove portions alternately arranged,
wherein the click generator is biased along an optical axis direction and is in contact with the groove part, and
wherein the click detector and the rotation detector are disposed along the optical axis direction.