IP Library › Granted Patent US 11,714,263

Granted Patent B2

US 11,714,263 · App. 17/088,665 · Granted Aug 1, 2023

Optical imaging system

Inventors: Jin Hwa Jung (Suwon-si, KR); Sot Eum Seo (Suwon-si, KR); Yong Joo Jo (Suwon-si, KR); Ga Young An (Suwon-si, KR)

Assignee: Samsung Electro-Mechanics Co., Ltd.

G02B9/64 G02B3/02 G02B13/0045

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Quick Facts

Patent No.: US 11,714,263
App. No.: 17/088,665
Granted: Aug 1, 2023
Kind: B2

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Abstract

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.

Claims (50)

1. An optical imaging system comprising:

a first lens comprising a positive refractive power, a convex object-side surface, and a concave image-side surface;

a second lens comprising a negative refractive power, a convex object-side surface, and a concave image-side surface;

a third lens comprising a refractive power, a convex object-side surface, and a concave image-side surface;

a fourth lens comprising a refractive power;

a fifth lens comprising a negative refractive power;

a sixth lens comprising a refractive power and a convex object-side surface; and

a seventh lens comprising a negative refractive power and a concave image-side surface,

wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an image side of the optical imaging system, and

wherein the optical imaging system satisfies 0.5<L12345TRavg/L7TR<0.9, where L12345TRavg is an average value of overall outer diameters of the first to fifth lenses, L7TR is an overall outer diameter of the seventh lens, and L12345TRavg and L7TR are expressed in a same unit of measurement.

2. The optical imaging system of claim 1 , wherein the third lens comprises a positive refractive power.

3. The optical imaging system of claim 1 , wherein the third lens comprises a negative refractive power.

4. The optical imaging system of claim 1 , wherein the fourth lens comprises a positive refractive power and a convex object-side surface.

5. The optical imaging system of claim 1 , wherein the sixth lens comprises a positive refractive power.

6. The optical imaging system of claim 1 , wherein the fourth lens comprises a convex object-side surface and a concave image-side surface.

7. The optical imaging system of claim 1 , wherein the fifth lens comprises a convex object-side surface and a concave image-side surface.

8. The optical imaging system of claim 1 , wherein the sixth lens comprises a convex image-side surface.

9. The optical imaging system of claim 1 , wherein the sixth lens comprises a concave image-side surface.

10. The optical imaging system of claim 1 , wherein the seventh lens comprises a concave object-side surface.

11. The optical imaging system of claim 1 , wherein a distance along the optical axis from an object-side surface of the first lens to the imaging plane is 6.0 mm or less.

12. The optical imaging system of claim 1 , wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the sixth lens.

13. The optical imaging system of claim 1 , wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the seventh lens.

14. The optical imaging system of claim 1 , further comprising a spacer disposed between the sixth and seventh lenses,

wherein the optical imaging system further satisfies 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, f is an overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.

15. The optical imaging system of claim 1 , wherein the optical imaging system further satisfies 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens.

16. The optical imaging system of claim 1 , wherein the optical imaging system further satisfies 0.5<L1234TRavg/L7TR<0.75, where L1234TRavg is an average value of overall outer diameters of the first to fourth lenses, and L1234TRavg and L7TR are expressed in a same unit of measurement.

17. The optical imaging system of claim 1 , wherein the optical imaging system further satisfies 0.5<L12345TRavg/L7TR<0.76.

18. An optical imaging system comprising:

a first lens comprising a refractive power;

a second lens comprising a refractive power, a convex object-side surface, and a concave image-side surface;

a third lens comprising a refractive power and a convex object-side surface;

a fourth lens comprising a refractive power;

a fifth lens comprising a refractive power;

a sixth lens comprising a positive refractive power and a convex object-side surface; and

a seventh lens comprising a negative refractive power and a concave image-side surface,

wherein the optical imaging system further satisfies 0.4<L1TR/L7TR<0.7, where L1TR is an overall outer diameter of the first lens and L7TR is an overall outer diameter of the seventh lens, and L1TR and L7TR are expressed in a same unit of measurement, and

19. The optical imaging system of claim 18 , wherein the first lens comprises a negative refractive power.

20. The optical imaging system of claim 18 , wherein the second lens comprises a positive refractive power.

21. The optical imaging system of claim 18 , wherein the third lens comprises a positive refractive power.

22. The optical imaging system of claim 18 , wherein the fourth lens comprises a negative refractive power.

23. The optical imaging system of claim 18 , wherein the fifth lens comprises a negative refractive power.

24. The optical imaging system of claim 18 , wherein the fourth lens comprises a convex image-side surface.

25. The optical imaging system of claim 18 , wherein the fifth lens comprises a concave object-side surface, and a convex image-side surface.

26. The optical imaging system of claim 18 , wherein the sixth lens comprises a convex image-side surface.

27. The optical imaging system of claim 18 , wherein the seventh lens comprises a convex object-side surface.

28. The optical imaging system of claim 18 , wherein a distance along the optical axis from an object-side surface of the first lens to the imaging plane is 6.0 mm or less.

29. The optical imaging system of claim 18 , wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the sixth lens.

30. The optical imaging system of claim 18 , wherein at least one inflection point is formed on either one or both of an object-side surface and an image-side surface of the seventh lens.

Priority Claims (2)

KR 10-2018-0061397 · May 29, 2018 · national

KR 10-2018-0106184 · Sep 5, 2018 · national

Continuity (2)

Continuation 16424842 · May 29, 2019

Related Publication 20210048646A1 · Feb 18, 2021

Cited By (2)

US 12,242,032 US 12,259,530