Aperture module and camera module including the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorYoung Hwan Kwon
Life of this patent
Estimating the term…
Abstract
An aperture module is provided. The aperture module includes a blade unit including a plurality of blades configured to form an incidence hole through which light passes, the plurality of blades being provided in (2M−1) layers in an optical axis direction, the plurality of blades disposed in each layer being provided in (2N+1) members, where M and N are natural numbers, a rotator on which the plurality of blades are rotatably seated, and an aperture driver configured to rotate the rotator and change a size of the incidence hole. In the plurality of blades, blades disposed on different layers of the (2M−1) layers overlap at least partially in the optical axis direction, and blades disposed on a same layer of the (2M−1) layers do not overlap each other in the optical axis direction.
Claims14
An aperture module, comprising:
- a blade unit comprising a plurality of blades configured to form an incidence hole through which light passes, the plurality of blades being provided in (2M−1) layers in an optical axis direction, the plurality of blades disposed in each layer being provided in (2N+1) members, where M and N are natural numbers other than 0;
- a rotator on which the plurality of blades are rotatably seated;
- a base on which the rotator is seated;
- a ball member disposed between the rotator and the base, and configured to rotatably support the rotator;
- a rolling groove that extends in a direction of rotation of the rotator, and accommodates the ball member in a rolling motion;
- and
- an aperture driver configured to rotate the rotator and change a size of the incidence hole,
- wherein in the plurality of blades, blades disposed on different layers of the (2M−1) layers overlap at least partially in the optical axis direction, while blades disposed on a same layer of the (2M−1) layers do not overlap each other in the optical axis direction, and
- wherein the ball member comprises a sub-ball member,
- wherein the rolling groove comprises a sub rolling groove provided to contact the sub-ball member in at least two points, and
- wherein a length of the sub rolling groove in a radial direction is greater than a diameter of the sub-ball member such that the sub-ball member is movable in the radial direction.
A camera module, comprising:
- a housing;
- a lens barrel provided inside the housing and having a plurality of lenses disposed therein;
- a fall detection sensor configured to measure an acceleration and generate a fall signal when a fall of the camera module is detected;
- and
- an aperture module configured to control an amount of light incident on the lenses,
- wherein the aperture module comprises:
- a blade unit comprising a plurality of blades configured to form an incidence hole through which light passes, the plurality of blades being provided in (2M−1) layers in an optical axis direction, the plurality of blades disposed in each layer being provided in (2N+1) members, where M and N are natural numbers other than 0;
- a rotator on which the plurality of blades are rotatably seated;
- an aperture driver configured to change a size of the incidence hole by rotating the rotator;
- and
- a controller configured to control the aperture driver and adjust the size of the incidence hole,
- wherein in the blade unit, blades disposed on different layers of the (2M−1) layers overlap at least partially in the optical axis direction, and blades disposed on a same layer of the (2M−1) layers do not overlap each other in the optical axis direction,
- wherein the aperture module has a fixed relative position in the optical axis direction with respect to the housing, and
- wherein the controller is configured to open the incidence hole to a maximum size when the fall signal is generated.
Dependencies are inferred from the claim text.