US 12,276,904 B2
Controllable aperture stop, compact camera module and electronic device
Hao Jan Chen, Taichung (TW); and Yu Chen Lai, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Jan. 25, 2024, as Appl. No. 18/423,045.
Application 18/423,045 is a continuation of application No. 17/833,959, filed on Jun. 7, 2022, granted, now 11,921,417.
Claims priority of application No. 111107076 (TW), filed on Feb. 25, 2022.
Prior Publication US 2024/0160086 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G03B 9/06 (2021.01); G03B 30/00 (2021.01)
CPC G03B 9/06 (2013.01) [G03B 30/00 (2021.01)] 19 Claims
OG exemplary drawing
 
1. A controllable aperture stop comprising:
a light pass portion comprising a plurality of movable blades, and the plurality of movable blades together surrounding a light pass aperture;
a fixed portion having a plurality of shaft structures respectively disposed corresponding to the plurality of movable blades;
a driving part comprising:
a rotatable element connected to the plurality of movable blades, and the rotatable element configured to drive the plurality of movable blades to rotate respectively relative to the plurality of shaft structures so as to adjust a size of the light pass aperture;
a first magnet disposed on the rotatable element; and
a first coil disposed corresponding to the first magnet, and the first magnet and the first coil configured to drive the rotatable element to rotate around the light pass aperture; and
a plurality of rollable elements disposed between the fixed portion and the rotatable element and arranged around the light pass aperture, so that the rotatable element can be rotated relative to the fixed portion;
wherein the fixed portion comprises a frame element, the frame element is in physical contact with the plurality of rollable elements so as to support the plurality of rollable elements and the rotatable element, the frame element comprises a metal component and a clad component, and the metal component is insert-molded with the clad component to together form the frame element;
wherein the metal component has a plurality of filled holes, the clad component is filled into the plurality of filled holes, and the plurality of filled holes and the first magnet do not overlap with each other in a direction parallel to a central axis of the light pass aperture.