Mobile terminal

• US 10,095,085 B2
• Filed: 01/24/2017
• Issued: 10/09/2018
• Est. Priority Date: 06/10/2016
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jongpil, Lee, Yongho, Oh, Gunseek
• Primary Examiner(s): Haskins, Twyler
• Assistant Examiner(s): BHUIYAN, FAYEZ A
• Application Number:
  US15/414,429
• Publication Number:
  US 20170357144A1
• Time in Patent Office: 623 Days
• CPC Class Codes: G03B 11/00 Filters or other obturators specially adapted for photographic purposes
• CPC Class Codes: G03B 17/12 with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• CPC Class Codes: G03B 2205/0069 using electromagnetic actuators, e.g. voice coils
• CPC Class Codes: G03B 9/06 Two or more co-operating pivoted blades, e.g. iris type shutters functioning as diaphragms by limiting extent of opening movement G03B9/08
• CPC Class Codes: H04M 1/0264 for a camera module assembly
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Abstract

A mobile terminal includes: a terminal body; and a camera module provided at one side of the terminal body, wherein the camera module includes: a first lens assembly; a second lens assembly provided below the first lens assembly; a diaphragm disposed between the first and second lens assemblies, and having its aperture changed; and an actuator disposed close to the first lens assembly, and configured to reciprocate the first lens assembly, wherein the diaphragm includes: a first blade having a through hole therein; a second blade having a through hole therein, and configured to change an aperture of the diaphragm by a relative motion with respect to the first blade; a link member coupled to end parts of the first and second blades, and configured to move the first and second blades by being rotated; and a motor coupled to one side of the link member, and configured to rotate the link member.

Claims

1. A mobile terminal, comprising:

a terminal body; and

a camera module located at one side of the terminal body,

wherein the camera module includes;

a first lens assembly;

a second lens assembly located below the first lens assembly;

a diaphragm located between the first lens assembly and the second lens assembly, and being shaped to have an aperture; and

an actuator configured to provide reciprocal movement of the first lens assembly relative to the second lens assembly,

wherein the diaphragm includes;

a first blade shaped to define a hole;

a second blade shaped to define a hole and being configured to change the aperture of the diaphragm according to relative motion with respect to the first blade;

a link member coupled to respective end parts of the first blade and the second blade, and configured to move the first blade and the second blade according to rotation of the link member; and

a motor coupled to one side of the link member and being configured to cause the rotation of the link member,

wherein the actuator includes;

a bobbin shaped to define a region within which the first lens assembly is located;

a housing formed to enclose side surfaces of the bobbin;

one or more magnetic members provided between the bobbin and the housing;

a coil located proximate to the one or more magnetic members, and being configured to generate an electromagnetic force between the coil and the one or more magnetic members;

an upper spring formed on an upper surface of the housing;

a lower spring formed on a lower surface of the housing; and

a supporting member configured to connect the upper spring with the lower spring.

2. The mobile terminal of claim 1, wherein the supporting member is positioned to pass through the hole of the first blade and the hole of the second blade, and slits are formed at the first and second blades for preventing interference between the supporting member and the first and second blades.

3. The mobile terminal of claim 1, wherein the supporting member is positioned at a plurality of regions of the upper and lower springs, and is formed using one or more wires.

4. The mobile terminal of claim 1, wherein the upper spring includes:

a corner part formed at a bent part; and

an edge part formed along an edge of the bobbin.

5. The mobile terminal of claim 4, wherein the edge part is formed of a metallic material and is bent.

6. The mobile terminal of claim 1, wherein the diaphragm further includes:

a fixed member for contacting at least one end of the first and second blades; and

a bush formed to pass through a hole formed at one end of the first blade or the second blade.

7. The mobile terminal of claim 1, wherein the diaphragm is sized to receive the first lens assembly and the actuator is sized to receive the diaphragm, and

wherein the actuator drives the first lens assembly and the diaphragm.

8. The mobile terminal of claim 1, wherein the camera module further includes:

an infrared ray cut filter (IRCF) located below the second lens assembly and configured to shield infrared rays; and

an image sensor located below the IRCF, and configured to convert an optical signal incident through the first and second lens assemblies into an image signal.

9. The mobile terminal of claim 1, wherein the first and second lens assemblies, the diaphragm, and the actuator are accommodated in the case.

10. A mobile terminal, comprising:

a terminal body; and

a camera module located at one side of the terminal body,

wherein the camera module includes;

a first lens assembly;

a second lens assembly located below the first lens assembly;

a diaphragm located between the first lens assembly and the second lens assembly, and being shaped to have an aperture; and

an actuator configured to provide reciprocal movement of the first lens assembly relative to the second lens assembly,

wherein the diaphragm includes;

a first blade shaped to define a hole;

a second blade shaped to define a hole and being configured to change the aperture of the diaphragm according to relative motion with respect to the first blade;

a link member coupled to respective end parts of the first blade and the second blade, and configured to move the first blade and the second blade according to rotation of the link member; and

a motor coupled to one side of the link member and being configured to cause the rotation of the link member,

wherein the diaphragm is sized to receive the first lens assembly and the actuator is sized to receive the diaphragm, and

wherein the actuator drives the first lens assembly and the diaphragm, and

wherein the actuator includes;

a carrier shaped to define a hole, and being formed to define an inner space by a side wall;

a second magnetic member located on the side wall of the carrier;

a housing sized to receive the carrier by a side wall, and shaped to define a hole at a region corresponding to the second magnetic member;

a second coil located at an inner region of the hole of the housing and facing the second magnetic member, and configured to generate an electromagnetic force; and

a printed circuit board configured to supply power to the second coil.

11. The mobile terminal of claim 10, wherein the carrier and the diaphragm move together with the first lens assembly according to an electromagnetic force generated by the second magnetic member and the second coil,

wherein first and second guide grooves are respectively formed on an outer side wall of the carrier and an inner side wall of the housing, in a thickness direction, and

wherein when the carrier moves, balls slide in the first and second guide grooves.