# US 2021/0239886 A1 · Dual camera module comprising liquid lenses > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0239886 A1 - Document ID: US20210239886A1 - Status: Published application - Kind: A1 - Application number: 17/052,898 - Filed: 2019-05-03 - Published: 2021-08-05 - Earliest claimed: 2018-05-04 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Ji Young JUNG - Web page: https://patentgrep.com/patent/US20210239886A1 ## CPC - G02B 3/14: of variable focal length - G02B 7/08: adapted to co-operate with a remote control mechanism - G02B 13/0075: {having an element with variable optical properties} - G02B 27/646: {compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68)} - G03B 13/36: Autofocus systems - G03B 30/00: Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles - G02B 7/021: {for more than one lens} - G02B 7/022: {lens and mount having complementary engagement means, e.g. screw/thread} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract The dual camera module according to an embodiment comprises: a first lens assembly comprising a first liquid lens; and a second lens assembly comprising a second liquid lens, the first and second liquid lenses each comprising a cavity, conductive and non-conductive liquids disposed in the cavity, first and second electrodes, and an insulating layer disposed so as to cover at least a part of the first electrode along an inner surface defining the cavity, wherein the insulating layer of the first liquid lens and that of the second liquid lens may have different thicknesses. ## Claims ### Claim at position 1 1-10. (canceled) ### Claim 11 A dual camera module, comprising: a first lens assembly comprising a first liquid lens; and a second lens assembly comprising a second liquid lens, wherein each of the first liquid lens and the second liquid lens comprises: a cavity; a conductive liquid and a non-conductive liquid disposed in the cavity; a first electrode; a second electrode; and an insulation layer disposed along an inner surface forming the cavity so as to cover at least a portion of the first electrode, and wherein the insulation layer of the first liquid lens and the insulation layer of the second liquid lens have thicknesses different from each other. ### Claim 12 (depends on 11) The dual camera module according to claim 11, further comprising a control circuit configured to simultaneously apply a same driving voltage to the first lens assembly and the second lens assembly. ### Claim 13 (depends on 12) The dual camera module according to claim 12, wherein the first lens assembly and the second lens assembly have different focal lengths different from each other, when the same driving voltage is applied thereto. ### Claim 14 (depends on 11) The dual camera module according to claim 11, wherein, when the insulation layer of the first liquid lens has a thickness smaller than a thickness of the insulation layer of the second liquid lens, the first liquid lens has a focal length shorter than a focal length of the second liquid lens at a same driving voltage. ### Claim 15 (depends on 14) The dual camera module according to claim 14, wherein the first lens assembly operates as a wide-angle lens, and wherein the second lens assembly operates as a narrow-angle lens. ### Claim 16 (depends on 11) The dual camera module according to claim 11, wherein the insulation layer of each of the first liquid lens and the second liquid lens has a thickness of 1 μm to 6 μm. ### Claim 17 (depends on 16) The dual camera module according to claim 16, wherein the insulation layer of each of the first liquid lens and the second liquid lens has a thickness of 4 μm or less. ### Claim 18 (depends on 11) The dual camera module according to claim 11, wherein the first lens assembly and the second lens assembly are disposed on a same board. ### Claim 19 (depends on 15) The dual camera module according to claim 15, wherein the first lens assembly and the second lens assembly have focal points that are identical to each other with respect to a distance to an object corresponding to a specific driving voltage band. ### Claim 20 (depends on 15) The dual camera module according to claim 15, wherein the first lens assembly comprises at least a first lens unit and a second lens unit, and wherein at least one of the first lens unit and the second lens unit compensates for a diopter difference between the first liquid lens and the second liquid lens at a driving voltage at which a diopter of the second lens assembly is 0. ### Claim 21 (depends on 11) The dual camera module according to claim 11, wherein the cavity in the first liquid lens and the cavity in the second liquid lens have a same size as each other. ### Claim 22 (depends on 11) The dual camera module according to claim 11, wherein the cavity in the first liquid lens and the cavity in the second liquid lens have sizes different from each other. ### Claim 23 A dual camera module, comprising: a first lens assembly comprising a first liquid lens; a second lens assembly comprising a second liquid lens; and a control circuit configured to simultaneously apply a same driving voltage to the first lens assembly and the second lens assembly, wherein the first liquid lens and the second liquid lens have different diopters different from each other, when the same driving voltage is applied thereto. ### Claim 24 (depends on 23) The dual camera module according to claim 23, wherein each of the first liquid lens and the second liquid lens comprises: a cavity; a conductive liquid and a non-conductive liquid disposed in the cavity; a first electrode; a second electrode; and an insulation layer disposed along an inner surface forming the cavity so as to cover at least a portion of the first electrode, and wherein the insulation layer of the first liquid lens and the insulation layer of the second liquid lens have thicknesses different from each other. ### Claim 25 (depends on 23) The dual camera module according to claim 23, wherein, when the insulation layer of the first liquid lens has a thickness smaller than a thickness of the insulation layer of the second liquid lens, the first liquid lens has a focal length shorter than a focal length of the second liquid lens at a same driving voltage. ### Claim 26 (depends on 25) The dual camera module according to claim 25, wherein the first lens assembly operates as a wide-angle lens, and wherein the second lens assembly operates as a narrow-angle lens. ### Claim 27 (depends on 15) The dual camera module according to claim 15, wherein the first lens assembly and the second lens assembly have focal points that are identical to each other with respect to a distance to an object corresponding to a specific driving voltage band. ### Claim 28 (depends on 26) The dual camera module according to claim 26, wherein the first lens assembly comprises at least a first lens unit and a second lens unit, and wherein at least one of the first lens unit and the second lens unit compensates for a diopter difference between the first liquid lens and the second liquid lens at a driving voltage at which a diopter of the second lens assembly is 0. ### Claim 29 (depends on 23) The dual camera module according to claim 23, wherein the insulation layer of each of the first liquid lens and the second liquid lens has a thickness of 1 μm to 6 μm. ### Claim 30 (depends on 29) The dual camera module according to claim 29, wherein the insulation layer of each of the first liquid lens and the second liquid lens has a thickness of 4 μm or less.