US 12,443,002 B2
Optical apparatus, image stabilization device, lens barrel, and image pickup apparatus
Toru Ishimasa, Kanagawa (JP); Kohei Uemura, Tokyo (JP); Masato Shiono, Kanagawa (JP); and Kohei Uemura, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 9, 2022, as Appl. No. 17/883,730.
Claims priority of application No. 2021-135594 (JP), filed on Aug. 23, 2021.
Prior Publication US 2023/0055253 A1, Feb. 23, 2023
Int. Cl. G02B 7/02 (2021.01); G02B 27/64 (2006.01)
CPC G02B 7/021 (2013.01) [G02B 27/646 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An optical apparatus comprising:
lens groups that are arranged on an optical axis to be movable along the optical axis;
a first shaft that is arranged in parallel to the optical axis and that has a fitting part fit in a predetermined lens group among the lens groups and a first fixing part;
a support member that rotatably supports the first shaft by holding the first fixing part, and
a second shaft that is provided in the support member in parallel to the optical axis and that has a second fixing part held by the support member and a contact part that contacts the predetermined lens group to regulate a position of the predetermined lens group in a direction of the optical axis,
wherein a center axis of the first fixing part and a center axis of the fitting part are eccentric,
wherein the first shaft is supported by the support member to be rotatable around the center axis of the first fixing part,
wherein a center axis of the second fixing part and a center axis of the contact part are eccentric, and an eccentricity amount of the second shaft is more than a half of an eccentricity amount of the first shaft,
wherein the second shaft is supported by the support member to be rotatable around the center axis of the second fixing part, and
wherein the predetermined lens group is movable between an image pickup position on the optical axis and a retreat position that is separated from the optical axis by rotating around the first shaft.