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CN-224203502-U - Optical imaging system

CN224203502UCN 224203502 UCN224203502 UCN 224203502UCN-224203502-U

Abstract

The optical imaging system includes a first lens having a refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, which are disposed in order from an object side. The first lens and the second lens are bonded together, wherein 0 < f1/v1-f2/v2 <3 is satisfied, where f1 is the focal length of the first lens, v1 is the Abbe number of the first lens, f2 is the focal length of the second lens, and v2 is the Abbe number of the second lens.

Inventors

  • LI ZHIXIU
  • Xu Zaihe
  • ZHAO YONGZHU

Assignees

  • 三星电机株式会社

Dates

Publication Date
20260505
Application Date
20250528
Priority Date
20241029

Claims (16)

  1. 1. An optical imaging system, characterized in that the optical imaging system comprises: A first lens having a refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens in this order from the object side, Wherein the first lens and the second lens are bonded together, an Wherein, the ratio of the total amount of the components is 0 to less than or equal to |f1/v1-f2/v2| <3, Where f1 is the focal length of the first lens, v1 is the abbe number of the first lens, f2 is the focal length of the second lens, and v2 is the abbe number of the second lens.
  2. 2. The optical imaging system of claim 1, wherein the abbe number of the first lens is less than the abbe number of the second lens.
  3. 3. The optical imaging system of claim 1, wherein the refractive index of the first lens is higher than the refractive index of the second lens.
  4. 4. The optical imaging system of claim 1, wherein the third lens has a convex object side and a concave image side.
  5. 5. The optical imaging system of claim 1, wherein the fourth lens has a convex object side and the sixth lens has a concave image side.
  6. 6. The optical imaging system of claim 1, wherein the seventh lens has a positive refractive power and a convex object side.
  7. 7. The optical imaging system of claim 1, wherein the eighth lens has a negative refractive power and a convex object side.
  8. 8. The optical imaging system of claim 1, wherein 1< ttl/f <1.3 is satisfied, Where f is the total focal length of the optical imaging system, and TTL is the distance on the optical axis from the object side of the first lens to the imaging plane.
  9. 9. The optical imaging system according to claim 1, wherein 0.5< ttl/(2 x IMG HT) <0.8 is satisfied, Wherein IMG HT is half the diagonal length of the imaging plane, and TTL is the distance along the optical axis from the object side of the first lens to the imaging plane.
  10. 10. An optical imaging system, characterized in that the optical imaging system comprises: A first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens disposed in order from the object side, Wherein the first lens and the second lens are bonded together, an Wherein either or both of v1-v2<0 and 0< n1-n2 are satisfied, Where v1 is the abbe number of the first lens, v2 is the abbe number of the second lens, n1 is the refractive index of the first lens, and n2 is the refractive index of the second lens.
  11. 11. The optical imaging system of claim 10, wherein 0< f2/f <2, Where f is the total focal length of the optical imaging system and f2 is the focal length of the second lens.
  12. 12. The optical imaging system of claim 10, wherein-5 < f3/f < -1, Where f is the total focal length of the optical imaging system, and f3 is the focal length of the third lens.
  13. 13. The optical imaging system of claim 10, wherein-10 < f4/f/100<1, Where f is the total focal length of the optical imaging system, and f4 is the focal length of the fourth lens.
  14. 14. The optical imaging system of claim 10, wherein-5 < f5/f/100<1, Where f is the total focal length of the optical imaging system, and f5 is the focal length of the fifth lens.
  15. 15. The optical imaging system of claim 10, wherein 0< f7/f <2 is satisfied, where f is a total focal length of the optical imaging system, and f7 is a focal length of the seventh lens.
  16. 16. The optical imaging system of claim 10, wherein-2 < f8/f <0, Where f is the total focal length of the optical imaging system, and f8 is the focal length of the eighth lens.

Description

Optical imaging system Cross Reference to Related Applications The present application claims the benefit of priority from korean patent application No. 10-2024-0149375 filed in the korean intellectual property office on day 10 and 29 of 2024, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field The present disclosure relates to optical imaging systems. Background The portable terminal may be equipped with a camera having a high resolution including an optical imaging system including a plurality of lenses to achieve video calling and image capturing. In order to achieve clearer image quality, an image sensor having high pixels (for example, 1300 ten thousand to 2 hundred million pixels) may be employed in a camera for a portable terminal. In addition, as portable terminals become smaller, thinner cameras for the portable terminals may be required. The above information is presented as background information only to aid in the understanding of the present disclosure. No determination is made, nor an assertion is made, as to whether any of the above may be used as prior art with respect to the present disclosure. Disclosure of utility model This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. In one general aspect, an optical imaging system includes a first lens having a refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, which are disposed in order from an object side. The first lens and the second lens are bonded together, wherein 0 < f1/v1-f2/v2 <3 is satisfied, where f1 is the focal length of the first lens, v1 is the Abbe number of the first lens, f2 is the focal length of the second lens, and v2 is the Abbe number of the second lens. The abbe number of the first lens may be smaller than the abbe number of the second lens. The refractive index of the first lens may be higher than the refractive index of the second lens. The third lens may have a convex object side and a concave image side. The fourth lens may have a convex object side and the sixth lens may have a concave image side. The seventh lens may have a positive refractive power and a convex object side. The eighth lens may have a negative refractive power and a convex object side. The optical imaging system may satisfy 1< TTL/f <1.3, where f is a total focal length of the optical imaging system, and TTL is a distance on the optical axis from the object side surface to the imaging surface of the first lens. The optical imaging system may satisfy 0.5< TTL/(2×img HT) <0.8, where IMG HT is half the diagonal length of the imaging plane, and TTL is the distance along the optical axis from the object side surface of the first lens to the imaging plane. In another general aspect, an optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens disposed in order from an object side, wherein the first lens and the second lens are cemented together, and wherein either or both of v1-v2<0 and 0< n1-n2 are satisfied, wherein v1 is an abbe number of the first lens, v2 is an abbe number of the second lens, n1 is a refractive index of the first lens, and n2 is a refractive index of the second lens. The optical imaging system may satisfy 0< f2/f <2, where f is the total focal length of the optical imaging system, and f2 is the focal length of the second lens. The optical imaging system may satisfy-5 < f3/f < -1, where f is a total focal length of the optical imaging system, and f3 is a focal length of the third lens. The optical imaging system may satisfy-10 < f4/f/100<1, where f is the total focal length of the optical imaging system, and f4 is the focal length of the fourth lens. The optical imaging system may satisfy-5 < f5/f/100<1, where f is the total focal length of the optical imaging system, and f5 is the focal length of the fifth lens. The optical imaging system may satisfy 0< f7/f <2, where f is the total focal length of the optical imaging system, and f7 is the focal length of the seventh lens. The optical imaging system may satisfy-2 < f8/f <0, where f is a total focal length of the optical imaging system, and f8 is a focal length of the eighth lens. Other features and aspects will be apparent from the accompanying drawings and from the detailed description that follows. Drawings Fig. 1A is a configuration diagram of an optical imaging system according to a first embodiment of the present disclosure. Fig. 1B is a diagram showing aberration characteristics of the optical imaging syste