US 12,393,001 B2
Lens for filming
Kazuhiro Oe, Nagano (JP)
Assigned to Nittoh Inc., Nagano (JP)
Appl. No. 17/311,732
Filed by Nittoh Inc., Nagano (JP)
PCT Filed Dec. 16, 2019, PCT No. PCT/JP2019/049130
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2020/137650, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-240746 (JP), filed on Dec. 25, 2018.
Prior Publication US 2022/0026688 A1, Jan. 27, 2022
Int. Cl. G02B 13/02 (2006.01); G02B 9/64 (2006.01); H04N 23/55 (2023.01)
CPC G02B 13/02 (2013.01) [G02B 9/64 (2013.01); H04N 23/55 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A lens for filming, comprising:
a plurality of movable lens groups arranged apart from each other in the direction of an optical axis, and which move in the direction of the optical axis for focusing,
wherein a fixed lens group, which does not move, is provided between at least one pair of movable lens groups adjacent to each other among the plurality of movable lens groups, and all the movable lens groups and the fixed lens groups are arranged toward the subject side of a position of a stop of the lens for filming, wherein a movable lens group arranged closest to a subject side among the plurality of movable lens groups has negative power.