Multi-aperture cameras with at least one two state zoom camera

Patent metadata

Field	Value
Publication number	US-11611706-B2
Application number	US-202217954432-A
Country	US
Kind code	B2
Filing date	Sep 28, 2022
Priority date	Jan 3, 2019
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

Multi-cameras and in particular dual-cameras comprising a Wide camera comprising a Wide lens and a Wide image sensor, the Wide lens having a Wide effective focal length EFL W and a folded Tele camera comprising a Tele lens with a first optical axis, a Tele image sensor and an OPFE, wherein the Tele lens includes, from an object side to an image side, a first lens element group G1, a second lens element group G2 and a third lens element group G3, wherein at least two of the lens element groups are movable relative to the image sensor along the first optical axis to bring the Tele lens to two zoom states, wherein an effective focal length (EFL) of the Tele lens is changed from EFL T,min in one zoom state to EFL T,max in the other zoom state, wherein EFL Tmin >1.5×EFL W and wherein EFL Tmax >1.5×EFL Tmin .

First claim

What is claimed is:

1. A dual-camera, comprising:
a Wide camera comprising a Wide lens with a Wide effective focal length (EFL W ); and
a folded Tele camera comprising a Tele lens with an optical axis and with an effective focal length (EFL T ), and an optical path folding element (OPFE), wherein the Tele lens includes, from an object side to an image side, a first lens element group (G1), a second lens element group (G2) and a third lens element group (G3),
wherein G2 is movable along the optical axis relative to G1 and G3 to bring the Tele lens to two, first and second zoom states,
wherein EFLT is changed from a value EFLT min in the first zoom state to a value EFLT max in the second zoom state,
wherein EFLT min >1.5×EFL W , and
wherein EFLT max >1.5×EFL Tmin .

2. The dual-camera of claim 1 , wherein EFL Tmin is in the range of 10-20 mm and wherein EFL Tmax is in the range of 20-40 mm.

3. The dual-camera of claim 2 , wherein EFL Tmin =15 mm and EFL Tmax =30 mm.

4. The dual-camera of claim 2 , wherein EFL Tmin =13 mm and EFL Tmax =26 mm.

5. The dual-camera of claim 2 , included in a mobile device.

6. The dual-camera of claim 5 , wherein the mobile device is a smartphone.

7. The dual-camera of claim 1 , wherein EFL Tmin is larger than EFL W by 2 times or more.

8. The dual-camera of claim 7 , included in a mobile device.

9. The dual-camera of claim 8 , wherein the mobile device is a smartphone.

10. The dual-camera of claim 1 , wherein actuation for the movement of G2 is performed in close loop control.

11. The dual-camera of claim 10 , wherein actuation for the movement of G1 and G3 is performed in open loop control.

12. The dual-camera of claim 10 , included in a mobile device.

13. The dual-camera of claim 12 , wherein the mobile device is a smartphone.

14. The dual-camera of claim 1 , wherein the movement of G1, G2 and G3 is created using voice coil motor mechanisms.

15. The dual-camera of claim 1 , wherein the movement of G1, G2 and G3 is guided along the optical axis by a ball guided mechanism that creates a linear rail.

16. The dual-camera of claim 15 , wherein the ball guided mechanism includes at least one groove on a G2 lens carrier, at least one groove on a G1+G3 lens carrier, and a plurality of balls positioned between the at least one groove on the G2 lens carrier and at least one groove on the G1+G3 lens carrier.

17. The dual-camera of claim 16 , wherein EFL Tmax /EFL Tmin >1.9.

18. The dual-camera of claim 1 , included in a mobile device.

19. The dual-camera of claim 18 , wherein the mobile device is a smartphone.

Assignees

• Corephotonics Ltd

Inventors

• Shabtay Gal
• Goldenberg Ephraim
• Rudnick Roy
• Dror Michael
• Bachar Gil
• Bronstein Emil
• Yedid Itay

Classifications

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/80

  Camera processing pipelines; Components thereof · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/54

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title