# US 2024/0201471 A1 · Image capturing optical lens system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0201471 A1 - Document ID: US20240201471A1 - Status: Published application - Kind: A1 - Application number: 18/408,679 - Filed: 2024-01-10 - Published: 2024-06-20 - Earliest claimed: 2012-10-22 - Assignees: Largan Precision Co., Ltd. - Applicants: Largan Precision Co., Ltd. - Inventors: Hsiang-Chi TANG; Tsung-Han TSAI; Hsin-Hsuan HUANG - Web page: https://patentgrep.com/patent/US20240201471A1 ## CPC - G02B 13/0045: {having five or more lenses} - G02B 9/62: having six components only - G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} - G02B 27/0025: {for optical correction, e.g. distorsion, aberration} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An image capturing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element with refractive power has a concave image-side surface. The fourth lens element has refractive power, and at least one surface thereof is aspheric. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, and the surfaces thereof are aspheric. The sixth lens element with refractive power has a convex object-side surface, and an image-side surface changing from concave at a paraxial region thereof to convex at a peripheral region thereof, and the surfaces are aspheric. ## Claims ### Claim 1 An image capturing optical lens system comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element; wherein each of the six lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side; wherein the object-side surface of the second lens element is convex in a paraxial region thereof; an absolute value of a focal length of the sixth lens element is larger than an absolute value of a focal length of the third lens element; an axial distance between the fourth lens element and the fifth lens element is larger than an axial distance between the third lens element and the fourth lens element; an absolute value of a curvature radius of the image-side surface of the first lens element is larger than an absolute value of a curvature radius of the object-side surface of the sixth lens element; wherein an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a curvature radius of the object-side surface of the first lens element is R1, the curvature radius of the image-side surface of the first lens element is R2, a curvature radius of the object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, and the following relationships are satisfied: 0.2 < V ⁢ 5 / V ⁢ 6 < 0.7 ; - 3. < ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0 ; and - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) < 0. ### Claim 2 (depends on 1) The image capturing optical lens system of claim 1, wherein there is an air gap between each of adjacent lens elements of the six lens elements, both of the object-side surface and the image-side surface of the sixth lens element are aspheric. ### Claim 3 (depends on 1) The image capturing optical lens system of claim 1, wherein the first lens element with positive refractive power has the object-side surface being convex in a paraxial region thereof. ### Claim 4 (depends on 1) The image capturing optical lens system of claim 1, wherein the object-side surface of the sixth lens element is convex in a paraxial region thereof. ### Claim 5 (depends on 1) The image capturing optical lens system of claim 1, wherein the image-side surface of the sixth lens element is concave in a paraxial region thereof. ### Claim 6 (depends on 1) The image capturing optical lens system of claim 1, wherein the curvature radius of the object-side surface of the first lens element is R1, the curvature radius of the image-side surface of the first lens element is R2, and the following relationship is satisfied: - 1.51 ≤ ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0. ### Claim 7 (depends on 1) The image capturing optical lens system of claim 1, wherein focal lengths of the fourth lens element and the fifth lens element have different signs. ### Claim 8 (depends on 1) The image capturing optical lens system of claim 1, wherein a central thickness of the fourth lens element is larger than a central thickness of the second lens element. ### Claim 9 (depends on 1) The image capturing optical lens system of claim 1, wherein the absolute value of the focal length of the sixth lens element is larger than an absolute value of a focal length of the fifth lens element. ### Claim 10 (depends on 1) The image capturing optical lens system of claim 1, wherein the first lens element has positive refractive power and the fifth lens element has negative refractive power. ### Claim 11 An image capturing optical lens system comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element; wherein each of the six lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side; wherein the first lens element has positive refractive power; the object-side surface of the second lens element is convex in a paraxial region thereof; an absolute value of a focal length of the sixth lens element is larger than an absolute value of a focal length of the third lens element; focal lengths of the fourth lens element and the fifth lens element have different signs; a central thickness of the first lens element is larger than a central thickness of the fifth lens element; the central thickness of the fifth lens element is larger than a central thickness of the second lens element; wherein an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of the image-side surface of the first lens element is R2, a curvature radius of the object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, and the following relationships are satisfied: 0.2 < V ⁢ 5 / V ⁢ 6 < 0.7 ; - 3. < ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0 ; and - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) < 0. ### Claim 12 (depends on 11) The image capturing optical lens system of claim 11, wherein the curvature radius of the object-side surface of the first lens element is R1, the curvature radius of the image-side surface of the first lens element is R2, and the following relationship is satisfied: - 1.51 ≤ ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0. ### Claim 13 (depends on 11) The image capturing optical lens system of claim 11, wherein the curvature radius of the object-side surface of the fifth lens element is R9, the curvature radius of the image-side surface of the fifth lens element is R10, and the following relationship is satisfied: - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) ≤ - 0.16 . ### Claim 14 (depends on 11) The image capturing optical lens system of claim 11, further comprising: an aperture stop, closer to the object side of the image capturing optical lens system than the third lens element. ### Claim 15 (depends on 11) The image capturing optical lens system of claim 11, wherein the absolute value of the focal length of the sixth lens element is larger than an absolute value of the focal length of the fifth lens element. ### Claim 16 (depends on 11) The image capturing optical lens system of claim 11, wherein an axial distance between the fourth lens element and the fifth lens element is larger than an axial distance between the third lens element and the fourth lens element. ### Claim 17 (depends on 11) The image capturing optical lens system of claim 11, wherein the fifth lens element has negative refractive power. ### Claim 18 An image capturing optical lens system comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element; wherein each of the six lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side; wherein curvature radii of the object-side surface and the image-side surface of the fourth lens element have different signs; an axial distance between the second lens element and the third lens element is larger than an axial distance between the third lens element and the fourth lens element; wherein an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of the image-side surface of the first lens element is R2, a curvature radius of the object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, and the following relationships are satisfied: 0.2 < V ⁢ 5 / V ⁢ 6 ≤ 0.423 ; - 3. < ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0 ; and - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) < 0. ### Claim 19 (depends on 18) The image capturing optical lens system of claim 18, wherein at least one of the object-side surface and the image-side surface of each of at least three of the six lens elements is aspheric, the object-side surface of the second lens element is convex in a paraxial region thereof. ### Claim 20 (depends on 18) The image capturing optical lens system of claim 18, wherein the curvature radius of the object-side surface of the fifth lens element is R9, the curvature radius of the image-side surface of the fifth lens element is R10, and the following relationship is satisfied: - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) ≤ - 0.16 . ### Claim 21 (depends on 18) The image capturing optical lens system of claim 18, wherein an absolute value of a focal length of the sixth lens element is larger than an absolute value of a focal length of the third lens element. ### Claim 22 (depends on 18) The image capturing optical lens system of claim 18, wherein focal lengths of the fourth lens element and the fifth lens element have different signs, curvature radii of the object-side surface and the image-side surface of the sixth lens element have the same sign. ### Claim 23 (depends on 18) The image capturing optical lens system of claim 18, wherein an absolute value of a focal length of the sixth lens element is larger than an absolute value of a focal length of the fifth lens element, a central thickness of the third lens element is larger than a central thickness of the second lens element. ### Claim 24 (depends on 18) The image capturing optical lens system of claim 18, wherein the first lens element has positive refractive power and the fifth lens element has negative refractive power. ### Claim 25 An image capturing optical lens system comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element; wherein each of the six lens elements has an object-side surface facing towards the object side and an image-side surface facing towards the image side; wherein the object-side surface of the fourth lens element is concave in a paraxial region thereof; a central thickness of the fourth lens element is larger than a central thickness of the second lens element; an axial distance between the first lens element and the second lens element is larger than an axial distance between the fourth lens element and the fifth lens element; an absolute value of a curvature radius of the image-side surface of the second lens element is larger than an absolute value of a curvature radius of the object-side surface of the third lens element; wherein an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of the image-side surface of the first lens element is R2, a curvature radius of the object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, and the following relationships are satisfied: 0.2 < V ⁢ 5 / V ⁢ 6 < 0.7 ; - 3. < ( R ⁢ 1 + R ⁢ 2 ) / ( R ⁢ 1 - R ⁢ 2 ) < 0 ; and - 0.5 < ( R ⁢ 9 - R ⁢ 10 ) / ( R ⁢ 9 + R ⁢ 10 ) < 0. ### Claim 26 (depends on 25) The image capturing optical lens system of claim 25, wherein the first lens element with positive refractive power has the object-side surface being convex in a paraxial region thereof, and there is an air gap between each of adjacent lens elements of the six lens elements. ### Claim 27 (depends on 25) The image capturing optical lens system of claim 25, wherein an absolute value of a curvature radius of the object-side surface of the sixth lens element is larger than an absolute value of a curvature radius of the object-side surface of the fourth lens element. ### Claim 28 (depends on 25) The image capturing optical lens system of claim 25, wherein an absolute value of a focal length of the fifth lens element is larger than an absolute value of a focal length of the fourth lens element. ### Claim 29 (depends on 25) The image capturing optical lens system of claim 25, wherein the first lens element has positive refractive power and the fifth lens element has negative refractive power.