US 12,135,438 B1
Augmented optical image stabilization using ferromagnetic materials
Yizhi Xiong, Foster City, CA (US); Honghong Peng, Mountain View, CA (US); and Lidu Huang, Danville, CA (US)
Assigned to META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed by META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed on Jan. 19, 2022, as Appl. No. 17/579,130.
Application 17/579,130 is a continuation of application No. 17/307,751, filed on May 4, 2021, abandoned.
Application 17/579,130 is a continuation of application No. 17/307,758, filed on May 4, 2021, abandoned.
Claims priority of provisional application 63/150,513, filed on Feb. 17, 2021.
Claims priority of provisional application 63/115,542, filed on Nov. 18, 2020.
Int. Cl. G02B 27/64 (2006.01); G03B 5/02 (2021.01); G03B 17/12 (2021.01)
CPC G02B 27/646 (2013.01) [G03B 5/02 (2013.01); G03B 17/12 (2013.01); G03B 2205/0069 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A stabilization assembly comprising:
a lens barrel configured to carry a lens that is positioned along an optical axis;
a magnetic assembly including a plurality of magnets that produce a magnetic field;
one or more stabilizing coils coupled to a printed circuit board below the plurality of magnets;
an outer shell including an aperture through which the lens barrel can actuate, the outer shell at least partially enclosing the one or more stabilizing coils; and
a piece of ferromagnetic material that is coupled to a surface of the outer shell, the piece of ferromagnetic material positioned to augment the magnetic field,
wherein current supplied to the one or more stabilizing coils interacts with the augmented magnetic field to cause the magnetic assembly together with the lens barrel to translate in a direction perpendicular to the optical axis.