US 11,719,906 B2
Driving apparatus
Ayumu Nemoto, Tokyo (JP); Toshio Ibi, Kawasaki (JP); and Hajime Inoue, Kawasaki (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 27, 2020, as Appl. No. 16/803,580.
Application 16/803,580 is a continuation of application No. PCT/JP2018/030258, filed on Aug. 14, 2018.
Claims priority of application No. 2017-163145 (JP), filed on Aug. 28, 2017; application No. 2017-163146 (JP), filed on Aug. 28, 2017; application No. 2017-163147 (JP), filed on Aug. 28, 2017; application No. 2017-163148 (JP), filed on Aug. 28, 2017; and application No. 2018-136548 (JP), filed on Jul. 20, 2018.
Prior Publication US 2020/0192055 A1, Jun. 18, 2020
Int. Cl. G02B 7/04 (2021.01); G03B 3/10 (2021.01); G03B 5/00 (2021.01); H02N 2/10 (2006.01)
CPC G02B 7/04 (2013.01) [G03B 3/10 (2013.01); G03B 5/00 (2013.01); H02N 2/108 (2013.01); G03B 2205/0046 (2013.01); G03B 2205/0061 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A driving apparatus comprising:
a movable portion;
a fixed portion configured to hold the movable portion;
a controller configured to control a position of the movable portion relative to the fixed portion; and
a position detector including an image sensor, and configured to detect a position of the movable portion,
wherein the image sensor acquires different luminance information depending on the position of the movable portion based on surface information of the movable portion,
wherein the movable portion includes an outer part, a first inner part, and a second inner part provided inside the outer part,
wherein the first inner part has a first reflectance, and the second inner part has a second reflectance higher than the first reflectance, and
wherein the image sensor obtains a first luminance value as the luminance information by imaging the first inner part, and obtains a second luminance value as the luminance information by imaging the second inner part.