IP Library › Granted Patent US 12,265,234
Granted Patent B2
US 12,265,234 · App. 18/927,879 · Granted Apr 1, 2025

Thin dual-aperture zoom digital camera

Inventors: Gal Shabtay (Tel Aviv, IL); Ephraim Goldenberg (Tel Aviv, IL)
Assignee: Corephotonics Ltd.
G02B27/646G02B1/041G02B9/60G02B13/0045G02B13/009G02B13/02G02B27/0025H04N23/16H04N23/45H04N23/57H04N23/69G02B5/005G02B9/00G02B9/12G02B9/62G02B9/64G02B13/00G02B13/002G02B13/004G02B13/18H04N2101/00H04N2201/00Y10T29/4913
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Quick Facts
Patent No.
US 12,265,234
App. No.
18/927,879
Granted
Apr 1, 2025
Kind
B2
Abstract

A dual-aperture zoom camera comprising a Wide camera with a respective Wide lens and a Tele camera with a respective Tele lens, the Wide and Tele cameras mounted directly on a single printed circuit board, wherein the Wide and Tele lenses have respective effective focal lengths EFL w and EFL T and respective total track lengths TTL w and TTL T and wherein TTL w /EFL w >1.1 and TTL T /EFL T <1.0. Optionally, the dual-aperture zoom camera may further comprise an optical OIS controller configured to provide a compensation lens movement according to a user-defined zoom factor (ZF) and a camera tilt (CT) through LMV=CT*EFL ZF , where EFL ZF is a zoom-factor dependent effective focal length.

Claims (25)

1. A dual-aperture zoom camera, comprising:

a Wide camera with a respective Wide lens and a Tele camera with a respective Tele lens, wherein the Wide and Tele lenses have respective effective focal lengths EFL w and EFL T and respective total track lengths TTL w and TTL T , wherein TTL w /EFL w >1.1 and TTL T /EFL T <1.0, wherein EFL T /EFL w =e, and wherein e is in the range 1.3-2.0; and

a lens movement mechanism including two actuators and configured to provide a lens movement (LMV) according to a camera tilt (CT) input, wherein a first actuator controls a first lens movement LMV1 of the Wide lens, and wherein a second actuator controls a second LMV2 of the Tele lens.

2. The dual-aperture zoom camera of claim 1 , wherein the Wide and Tele cameras are mounted directly on a single printed circuit board.

3. The dual-aperture zoom camera of claim 2 , wherein the two actuators are flexibly connected to the single printed circuit board.

4. The dual-aperture zoom camera of claim 1 , wherein LMV1 is determined by EFL w , and wherein LMV2 is determined by EFL T .

5. The dual-aperture zoom camera of claim 1 , wherein LMV1=CT×EFL w , and wherein LMV2=CT×EFL T .

6. The dual-aperture zoom camera of claim 1 , wherein the lens movement mechanism is configured to perform optical image stabilization (OIS).

7. The dual-aperture zoom camera of claim 1 , wherein the Wide camera and the Tele camera are separated by a distance d, and wherein d≤1 mm for enabling a smooth zoom transition between the Wide camera and the Tele camera and vice versa.

8. The dual-aperture zoom camera of claim 1 , wherein the Tele lens has a F number smaller than 3.2.

9. The dual-aperture zoom camera of claim 1 , wherein the Tele lens includes a plurality of refractive lens elements arranged along an optical axis separated from one another by gaps between the lens elements and including, in order from an object side to an image side, a first group comprising a first lens element having a positive refractive power and a second lens element separated by a first air gap, and a second group comprising a first lens element and a second lens element separated by a second air gap, wherein the first group and the second group are separated by a third air gap, wherein a largest of the first, second, and third air gaps between the lens elements d MAX is the third air gap, wherein d MAX is larger than 2.25 times the first and second air gaps between the lens elements.

10. The camera system of claim 9 , wherein a smallest of the first, second, and third air gaps is d MIN , and wherein a ratio d MIN /d MAX <0.2.

11. The dual-aperture zoom camera of claim 1 , wherein the Tele lens includes a plurality of refractive lens elements, and wherein at least one surface of at least one of the plurality of refractive lens elements is aspheric.

12. The dual-aperture zoom camera of claim 1 , wherein the Tele lens satisfies a ratio TTL T /EFL T smaller than 1.0.

13. The dual-aperture zoom camera of claim 1 , wherein a ratio TTL T /TTL w is in the range 1.0-1.25.

14. The dual-aperture zoom camera of claim 1 , wherein the Tele lens includes a plurality of refractive lens elements, and wherein a center thickness of each lens element is equal to or larger than 0.2 mm.

15. The dual-aperture zoom camera of claim 1 , wherein EFL w is in the range of 2.5 mm-6 mm.

16. The dual-aperture zoom camera of claim 1 , wherein EFL T is in the range of 5 mm-12 mm.

17. The dual-aperture zoom camera of claim 1 , wherein the dual-aperture zoom camera has a camera height of equal to or less than 7 mm.

18. The dual-aperture zoom camera of claim 1 , wherein the dual-aperture zoom camera has a camera length in the range of 13 mm-25 mm.

19. The dual-aperture zoom camera of claim 1 , wherein the dual-aperture zoom camera has a camera width in the range of 6 mm-12 mm.

20. The dual-aperture zoom camera of claim 1 , wherein the Tele lens comprises a first lens element with positive refractive power having a convex object-side surface, a second lens element with negative refractive power having a thickness d 2 on an optical axis and separated from the first lens element by a first air gap, a third lens element with negative refractive power and separated from the second lens element by a second air gap, a fourth lens element having a positive refractive power and separated from the third lens element by a third air gap, and a fifth lens element having a negative refractive power, separated from the fourth lens element by a fourth air gap, the fifth lens element having a thickness d 5 on the optical axis.

21. The dual-aperture zoom camera of claim 20 , wherein the focal length of the first lens element f1 is smaller than TTL T /2, the first, third and fifth lens elements have each an Abbe number greater than 50, the second and fourth lens elements have each an Abbe number smaller than 30, the first air gap is smaller than d 2 /2, the third air gap is greater than TTL T /5 and the fourth air gap is smaller than 1.5d 5 .

22. The dual-aperture zoom camera of claim 1 , wherein the dual-aperture zoom camera is included in a mobile device.

23. The dual-aperture zoom camera of claim 1 , wherein the mobile device is a smartphone.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2024
From: SHABTAY, GAL; GOLDENBERG, EPHRAIM
To: COREPHOTONICS LTD.
Reel/Frame 069031/0788 →
Continuity (10)
Continuation 18507055 · Nov 12, 2023
Continuation 18180304 · Mar 8, 2023
Continuation 17665498 · Feb 5, 2022
Continuation 16812289 · Mar 7, 2020
Continuation 16299450 · Mar 12, 2019
Continuation 15456506 · Mar 11, 2017
Continuation 14973753 · Dec 18, 2015
Continuation 14373500
Provisional Application 61842987 · Jul 4, 2013
Related Publication 20250044606A1 · Feb 6, 2025
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