# US 12,181,640 B2 · Camera optical lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,640 B2 - Document ID: US12181640B2 - Status: Granted - Kind: B2 - Application number: 17/544,809 - Filed: 2021-12-07 - Published: 2023-03-23 - Granted: 2024-12-31 - Earliest claimed: 2021-09-23 - Assignees: AAC Optics (Suzhou) Co., Ltd. - Applicants: AAC Optics (Suzhou) Co., Ltd. - Inventors: Wen Sun; Jia Chen - Web page: https://patentgrep.com/patent/US12181640B2 ## CPC - G02B 13/0045: {having five or more lenses} - G02B 9/64: having more than six components - G02B 13/04: Reversed telephoto objectives - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present invention discloses a camera optical lens including, from an object side to an image side in sequence, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a refractive power, a fifth lens having a refractive power, a sixth lens having a refractive power, a seventh lens having a positive refractive power, and an eighth lens having a negative refractive power. The camera optical lens satisfies the following conditions: 0.85≤f1/f≤1.10, 1.00≤d6/d8≤3.00, 3.00≤(R11+R12)/(R11−R12)≤20.00, and d15 max/d15 min≤2.20. The camera optical lens according to the present invention has excellent optical characteristics, such as large aperture, wide angle, and ultra-thin. ## Claims ### Claim 1 A camera optical lens comprising, from an object side to an image side in sequence: a first lens with a positive refractive power having an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, a second lens with a negative refractive power having an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, a third lens with a positive refractive power having an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, a fourth lens with a refractive power having an object side surface being concave in a paraxial region and an image side surface being convex in the paraxial region, a fifth lens with a refractive power, a sixth lens with a refractive power, a seventh lens with a positive refractive power having an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and an eighth lens with a negative refractive power having an object side surface being concave in a paraxial region and an image side surface being concave in the paraxial region; wherein the camera optical lens satisfies the following conditions: 0.85≤f1/f≤1.10; 1.00≤d6/d8≤3.00; 3.00≤(R11+R12)/(R11−R12)≤20.00; and d15max/d15 min≤2.20; where, f: a focal length of the camera optical lens; f1: a focal length of the first lens; d6: an on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens; d8: an on-axis distance from the image side surface of the fourth lens to an object side surface of the fifth lens; R11: a central curvature radius of an object side surface of the sixth lens; R12: a central curvature radius of an image side surface of the sixth lens; d15max: a maximum thickness of the eighth lens parallel to an optical axis; and d15 min: a minimum thickness of the eighth lens parallel to the optical axis. ### Claim 2 (depends on 1) The camera optical lens according to claim 1 further satisfying the following condition: 3.00≤R10/R9≤20.00; where, R9: a central curvature radius of the object side surface of the fifth lens; and R10: a central curvature radius of an image side surface of the fifth lens. ### Claim 3 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: 1.00≤d14/d15≤2.50; where, d14: an on-axis distance from the image side surface of the seventh lens to the object side surface of the eighth lens; and d15: an on-axis thickness of the eighth lens. ### Claim 4 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: −4.14≤(R1+R2)/(R1−R2)≤−1.05; and 0.05≤d1/TTL≤0.17; where, R1: a central curvature radius of the object side surface of the first lens; R2: a central curvature radius of the image side surface of the first lens; d1: an on-axis thickness of the first lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 5 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: −5.44≤f2/f≤−1.32; 1.81≤(R3+R4)/(R3−R4)≤8.00; and 0.01≤d3/TTL≤0.05; where, f2: a focal length of the second lens; R3: a central curvature radius of the object side surface of the second lens; R4: a central curvature radius of the image side surface of the second lens; d3: an on-axis thickness of the second lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 6 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: 1.78≤f3/f≤8.62; −9.26≤(R5+R6)/(R5−R6)≤−2.10; and 0.02≤d5/TTL≤0.08; where, f3: a focal length of the third lens; R5: a central curvature radius of the object side surface of the third lens; R6: a central curvature radius of the image side surface of the third lens; d5: an on-axis thickness of the third lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 7 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: f4/f≤15.72; −233.20≤(R7+R8)/(R7−R8)≤8.51; and 0.02≤d7/TTL≤0.09; where, f4: a focal length of the fourth lens; d7: an on-axis thickness of the fourth lens; R7: a central curvature radius of the object side surface of the fourth lens; R8: a central curvature radius of the image side surface of the fourth lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 8 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: −8.72≤f5/f≤187.14; and 0.02≤d9/TTL≤0.06; where, f5: a focal length of the fifth lens; d9: an on-axis thickness of the fifth lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 9 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: −141.15≤f6/f≤41.01; and 0.02≤d11/TTL≤0.09; where, f6: a focal length of the sixth lens; d11: an on-axis thickness of the sixth lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 10 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: 0.88≤f7/f≤3.67; −25.59≤(R13+R14)/(R13−R14)≤−3.95; and 0.03≤d13/TTL≤0.13; where, f7: a focal length of the seventh lens; d13: an on-axis thickness of the seventh lens; R13: a central curvature radius of the object side surface of the seventh lens; R14: a central curvature radius of the image side surface of the seventh lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis. ### Claim 11 (depends on 1) The camera optical lens according to claim 1 further satisfying the following conditions: −1.98≤f8/f≤−0.61; 0.14≤(R15+R16)/(R15−R16)≤0.85; and 0.04≤d15/TTL≤0.19; where, f8: a focal length of the eighth lens; d15: an on-axis thickness of the eighth lens; R15: a central curvature radius of the object side surface of the eighth lens; R16: a central curvature radius of the image side surface of the eighth lens; and TTL: a total optical length from the object side surface of the first lens of the camera optical lens to an image surface of the camera optical lens along the optical axis.