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CN-120103574-B - Optical imaging lens

CN120103574BCN 120103574 BCN120103574 BCN 120103574BCN-120103574-B

Abstract

The application discloses an optical imaging lens, which comprises a lens barrel, a six-piece lens group and a spacer group, wherein the six-piece lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with negative focal power, the six-piece lens group and the spacer group are arranged in the lens barrel, the six-piece lens group comprises a fifth spacer which is arranged on the image side surface of the fifth lens and is in contact with the image side surface of the fifth lens, the maximum field angle FOV of the optical imaging lens is smaller than or equal to 100 degrees and smaller than or equal to 150 degrees, the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer are smaller than 1.40< |f6/D5m| <2.30, the outer diameter D0s of the object side end surface of the lens barrel, the outer diameter D0m of the image side end surface of the lens barrel, the radius R11 of the object side surface of the sixth lens and the radius R11 of the sixth lens are smaller than or equal to 20.0-20 m of the radius R < 0.12-R < 0.11 >.0.

Inventors

  • REN YALIN
  • WANG XIN
  • Ke Zailin
  • DAI YINING
  • ZHAO LIEFENG

Assignees

  • 浙江舜宇光学有限公司

Dates

Publication Date
20260512
Application Date
20231206

Claims (13)

  1. 1. Optical imaging lens, its characterized in that includes: the six-piece lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with negative focal power, which are sequentially arranged from an object side to an image side along an optical axis, wherein the image side surface of the first lens is a concave surface, the object side surface of the second lens is a concave surface, the image side surface is a convex surface, the object side surface and the image side surface of the third lens are convex surfaces, the object side surface of the fourth lens is a convex surface, the image side surface is a concave surface, the object side surface and the image side surface of the fifth lens are convex surfaces, and the object side surface of the sixth lens is a convex surface; A spacer group including a fifth spacer disposed on and in contact with an image side surface of the fifth lens; A lens barrel in which the six-piece lens group and the spacer group are disposed; Wherein the number of lenses with focal power in the optical imaging lens is six; The maximum field angle FOV of the optical imaging lens is more than or equal to 100.00 degrees and less than or equal to 150.00 degrees; the effective focal length f6 of the sixth lens and the outer diameter D5m of the image side surface of the fifth spacer satisfy 1.40< |f6/D5 m|2.25, and The outer diameter D0s of the object side end surface of the lens barrel, the outer diameter D0m of the image side end surface of the lens barrel, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens meet the conditions that the ratio of D0s-D0m to R11-R12 is less than or equal to 2.28 and less than or equal to 9.52.
  2. 2. The optical imaging lens of claim 1, wherein said spacer group further comprises a first spacer disposed on and in contact with an image side of said first lens, The inner diameter D0s of the object side end surface of the lens barrel, the inner diameter D0m of the image side end surface of the lens barrel and the total effective focal length f of the optical imaging lens meet that (D0 s-D0 m)/f is less than or equal to 2.20 and less than or equal to 4.89, the inner diameter D1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer and the effective focal length f1 of the first lens meet that (D1 s-D1 s)/f 1< -0.70.
  3. 3. The optical imaging lens of claim 2, wherein an outer diameter D1s of the object side surface of the first spacer, an effective focal length f1 of the first lens, an outer diameter D5s of the object side surface of the fifth spacer, and an effective focal length f5 of the fifth lens satisfy 0< |d1s/f1| -d5s/f5| <2.15.
  4. 4. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, Wherein an inner diameter D1s of the object side surface of the first spacer, an outer diameter D1s of the object side surface of the first spacer, a spacing EP12 of the first spacer and the second spacer along the optical axis, and a relative F-number Fno of the optical imaging lens satisfy 1.8< (D1 s-D1 s)/EP 12 x Fno <9.00.
  5. 5. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, The interval EP12 of the first spacer and the second spacer along the optical axis, the combined focal length f12 of the first lens and the second lens, the Abbe number V1 of the first lens and the Abbe number V2 of the second lens meet the condition that-3.80 < (V1-V2) multiplied by EP12/f12 is less than or equal to-2.36.
  6. 6. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, The distance EP01 between the object side end face of the lens barrel and the first spacer along the optical axis and the distance EP12 between the first spacer and the second spacer along the optical axis satisfy that EP01/EP12 is more than or equal to 1.09 and less than or equal to 2.20.
  7. 7. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, Wherein the inner diameter D1s of the object side surface of the first spacer, the outer diameter D2s of the object side surface of the second spacer, the air interval T12 of the first lens and the second lens on the optical axis and the center thickness CT2 of the second lens on the optical axis meet that 3.10< D1s/T12× (D2 s/CT 2) is less than or equal to 5.75.
  8. 8. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, Wherein an inner diameter D1s of the object side surface of the first spacer, an outer diameter D2s of the object side surface of the second spacer, a center thickness CT1 of the first lens on the optical axis, and a radius of curvature R2 of the image side surface of the first lens satisfy 0.15< D1s x CT 1/(D2 s x R2) <0.60.
  9. 9. The optical imaging lens of claim 2, wherein said spacer group further comprises a second spacer disposed on and in contact with an image side of said second lens, The combined focal length f12 of the first lens and the second lens, the combined focal length f23 of the second lens and the third lens, the inner diameter d1s of the object side surface of the first spacer and the inner diameter d2s of the object side surface of the second spacer are equal to or less than-9.57 and equal to or less than f12/d1s+f23/d2s and equal to or less than-5.93.
  10. 10. The optical imaging lens of claim 1, wherein the spacer group further comprises a second spacer disposed on and in contact with an image side of the second lens and a third spacer disposed on and in contact with an image side of the third lens, Wherein the center thickness CT1 of the first lens on the optical axis, the air interval T12 of the first lens and the second lens on the optical axis, the center thickness CT2 of the second lens on the optical axis and the interval EP23 of the second spacer and the third spacer along the optical axis satisfy that 6.00 is less than or equal to (CT1+T12+CT2)/EP 23 is less than or equal to 14.14.
  11. 11. The optical imaging lens of claim 1, wherein the spacer group further comprises a third spacer disposed on and in contact with an image side of the third lens and a fourth spacer disposed on and in contact with an image side of the fourth lens, Wherein a spacing EP34 of the third spacer and the fourth spacer along the optical axis, a center thickness CT4 of the fourth lens on the optical axis, an inner diameter d4s of an object side surface of the fourth spacer and an inner diameter d5s of an object side surface of the fifth spacer satisfy that 0.76≤EP 34/CT4× (d 4s/d5 s) <2.60.
  12. 12. The optical imaging lens of claim 11, wherein said spacer group further comprises a first spacer disposed on and in contact with an image side of said first lens and a second spacer disposed on and in contact with an image side of said second lens, The outer diameter D1m of the image side surface of the first spacer and the outer diameter D2m of the image side surface of the second spacer meet that D1m/D2m is more than or equal to 0.90 and less than or equal to 2.50, the length L of the lens barrel in the direction of the optical axis, the total effective focal length f of the optical imaging lens, the interval EP34 of the third spacer and the fourth spacer along the optical axis and the interval EP45 of the fourth spacer and the fifth spacer along the optical axis meet that L/f+EP34/EP45 is more than or equal to 5.98 and less than or equal to 7.80.
  13. 13. The optical imaging lens according to any one of claims 1 to 12, wherein an outer diameter D0m of an image side end surface of the lens barrel and an outer diameter D5s of an object side surface of the fifth spacer satisfy 1.38≤d0 m/D5 s≤2.14.

Description

Optical imaging lens Technical Field The application relates to the field of optical devices, in particular to a six-piece optical imaging lens. Background With the technical innovation of electronic devices, more and more new requirements are put on the imaging function of the electronic devices, for example, the imaging lens of the electronic device is designed as a wide-angle lens, so as to obtain a larger imaging range. Currently, six-piece imaging lenses have become mainstream, in order to achieve a large field angle of the six-piece imaging lens, the first lens generally has a larger outer diameter, which results in the outer diameter of the first lens being larger than that of the other lenses, and the central axis of the first lens is easily deviated from that of the other lenses during assembly, thereby affecting the imaging quality of the optical imaging lens. Disclosure of Invention The present application provides an optical imaging lens that at least solves or partially solves at least one problem, or other problems, present in the prior art. An aspect of the present application provides an optical imaging lens including a barrel, and a six-piece lens group and a spacer group disposed in the barrel; the six-piece lens group includes a first lens having negative power, a second lens having positive power, a third lens having positive power, a fourth lens having negative power, a fifth lens having positive power, and a sixth lens having negative power, which are sequentially arranged from an object side to an image side along an optical axis, the image side of the first lens being concave, the object side of the second lens being concave, the image side being convex, the object side and the image side of the third lens being convex, the object side of the fourth lens being convex, the image side being concave, the object side and the image side of the fifth lens being convex, the object side of the sixth lens being convex, the image side being concave, the spacer group including a fifth spacer disposed on the image side of the fifth lens and in contact with the image side of the fifth lens, wherein a maximum field angle FOV of the optical imaging lens is 100 DEG or less than 150 DEG, an effective focal length f6 of the sixth lens and an outer diameter D5m of the image side of the fifth spacer satisfy 1.40|6/D5 m and a radius D5/m and a radius D5/R0 and a radius D0/R11-R11/R11 and an outer diameter D11/R11. According to one exemplary embodiment of the present application, the spacer group further includes a first spacer disposed on and in contact with the image side surface of the first lens, wherein an inner diameter D0s of the object side end surface of the lens barrel, an inner diameter D0m of the image side end surface of the lens barrel, and a total effective focal length f of the optical imaging lens satisfy 2.00< (D0 s-D0 m)/f <5.00, an inner diameter D1s of the object side surface of the first spacer, an outer diameter D1s of the object side surface of the first spacer, and an effective focal length f1 of the first lens satisfy-2.80 < (D1 s-D1 s)/f 1< -0.70. According to an exemplary embodiment of the present application, the outer diameter D1s of the object side surface of the first spacer, the effective focal length f1 of the first lens, the outer diameter D5s of the object side surface of the fifth spacer, and the effective focal length f5 of the fifth lens satisfy 0< |D1s/f1| -D5s/f5| <2.15. According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed at and in contact with the image side surface of the second lens, wherein an inner diameter D1s of the object side surface of the first spacer, an outer diameter D1s of the object side surface of the first spacer, a spacing EP12 of the first spacer and the second spacer along the optical axis, and a relative F number FNo of the optical imaging lens satisfy 1.8< (D1 s-D1 s)/EP 12X FNo <9.00. According to an exemplary embodiment of the present application, the spacer group further comprises a second spacer disposed at and in contact with the image side surface of the second lens, wherein a spacing EP12 of the first and second spacers along the optical axis, a combined focal length f12 of the first and second lenses, an Abbe number V1 of the first lens, and an Abbe number V2 of the second lens satisfy-3.80 < (V1-V2). Times.EP 12/f12< -2.30. According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed at and in contact with the image side surface of the second lens, wherein a spacing EP01 of the object side end surface of the lens barrel and the first spacer along the optical axis and a spacing EP12 of the first spacer and the second spacer along the optical axis satisfy 1.00< EP01/EP12<2.20. According to an exemplary embodiment of the present application, the spacer group further includes a second spacer disposed at a