US 12,455,429 B2
Lens unit
Yasuo Tsuruoka, Nagano (JP); Akinori Yamamoto, Nagano (JP); Toshio Shirotori, Nagano (JP); Katsumi Umeda, Osaka (JP); Masanori Tanikawa, Osaka (JP); and Shinya Okada, Osaka (JP)
Assigned to NIDEC SANKYO CORPORATION, Nagano (JP); and PANASONIC AUTOMOTIVE SYSTEMS CO., LTD., Kanagawa (JP)
Filed by NIDEC SANKYO CORPORATION, Nagano (JP); and Panasonic Corporation, Osaka (JP)
Filed on Jul. 14, 2021, as Appl. No. 17/375,186.
Claims priority of application No. 2020-121286 (JP), filed on Jul. 15, 2020.
Prior Publication US 2022/0019050 A1, Jan. 20, 2022
Int. Cl. G02B 7/02 (2021.01)
CPC G02B 7/028 (2013.01) [G02B 7/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A lens unit comprising:
a first lens located the closest to an object side;
a second lens disposed on an image side with respect to the first lens;
a lens holder including a first housing portion that accommodates the first lens and a second housing portion that accommodates the second lens; and
a flexible printed circuit board including a heater,
wherein the first lens includes an object-side lens surface, an image-side lens surface, and an image-side flange surface that surrounds the image-side lens surface,
the first housing portion includes a regulation portion that regulates a position of the first lens in an optical axis direction,
an object side end surface of the regulation portion is a lens seating surface that positions the first lens in the optical axis direction, and
the image-side flange surface includes an inner peripheral region in which the flexible printed circuit board is disposed and an outer peripheral region with which the object side end surface of the regulation portion is brought into contact, from the object side in the optical axis direction.