CN-224232024-U - Imaging lens driving device

Abstract

The camera lens driving device comprises a frame body, a first lens seat, a second lens seat and an actuating assembly, wherein guide rail pieces are respectively arranged on two sides of the frame body, the first lens seat and the second lens seat are respectively arranged on two sides of the guide rail pieces in a sliding mode, the actuating assembly comprises a first actuating assembly and a second actuating assembly, the first actuating assembly is arranged on the frame body and clamped on the first lens seat and the second lens seat and used for moving the first lens seat and the second lens seat, the second actuating assembly is arranged on the second lens seat and used for generating driving force, and the second actuating assembly drives the second lens seat to move relative to the first lens seat in response to the fact that the driving force is larger than the maximum static friction force of the first actuating assembly and the second lens seat.

Inventors

• LI ZHUOHONG
• ZHANG JIADONG

Assignees

• 立景创新科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250516

Claims (10)

1. 1. An imaging lens driving apparatus, comprising: a frame body, two sides of which are respectively provided with a guide rail piece; the first mirror seat is arranged on one side of the two guide rail pieces in a sliding way; a second lens seat slidably disposed on the other side of the two guide rail members, and An actuation assembly comprising: a first actuating component arranged on the frame body and clamped on the first and second lens seats for moving the first and second lens seats, and The second actuating component is arranged on the second lens seat and is used for generating a driving force for the first actuating component; And the second actuating component drives the second lens seat to move relative to the first lens seat in response to the driving force being larger than a maximum static friction force between the first actuating component and the second lens seat.
2. 2. The apparatus of claim 1, wherein the first lens holder has a first clamping member having a first clamping portion, the second lens holder has a second clamping member having a second clamping portion and a third clamping portion, and the first actuating element is clamped to the first clamping portion, the second clamping portion, and the third clamping portion.
3. 3. The apparatus of claim 2, wherein the first actuator comprises a friction rod and a piezoelectric element, the piezoelectric element is connected to one end of the friction rod, and the first clamping portion is located between the piezoelectric element and the second clamping portion.
4. 4. The apparatus of claim 3, wherein the second actuating assembly comprises a traveling wave driving member fixed to the second lens holder and having a friction member contacting the friction lever, wherein the traveling wave driving member is configured to actuate the friction member to drive the friction member to generate the driving force corresponding to a traveling wave direction on the friction lever.
5. 5. The imaging lens driving apparatus as recited in claim 3, wherein the first actuating assembly further comprises an elastic member coupled to the piezoelectric assembly, the elastic member being responsive to the piezoelectric assembly being actuated to deform accordingly.
6. 6. The apparatus of claim 2, wherein the first clamping member and the second clamping member have two clamping arms, respectively.
7. 7. The apparatus of claim 1, wherein the two guide rail members comprise a first ball set and a second ball set, the first ball set is disposed on one side of the frame, the second ball set is disposed on the other side of the frame, and the first lens base and the second lens base slide on the first ball set and the second ball set.
8. 8. The apparatus of claim 1, further comprising a controller electrically connected to the first and second actuating elements for generating a first control signal and a second control signal, wherein the first actuating element generates a first motion according to the first control signal, and the second actuating element generates a second motion according to the second control signal.
9. 9. The apparatus of claim 1, wherein the first lens holder and the second lens holder are magnetically attracted to slide on the two guide members, and the second lens holder are magnetically attracted to slide on the two guide members.
10. 10. The apparatus of claim 1, wherein the first base has a first sliding slot and a second sliding slot on two sides thereof, the first sliding slot is slidably disposed on one of the two rail members, the second sliding slot is slidably disposed on the other of the two rail members, the first sliding slot is one of a U-shape and a V-shape, and the second sliding slot is the other of the U-shape and the V-shape.

Description

Imaging lens driving device Technical Field An imaging lens driving device, in particular to an imaging lens driving device capable of zooming and focusing. Background As the size of an imaging lens is reduced, zooming or focusing is performed in a limited space, and the current imaging lens performs an automatic focusing or zooming operation by using a Voice Coil Motor (VCM). The existing voice coil motor adopts magnets and coils as driving, and the arrangement space requirement is large, so that the electronic product using the voice coil motor is difficult to design in a miniaturized volume. Disclosure of utility model In view of the above, in some embodiments, an imaging lens driving device is provided, which includes a frame, a first lens holder, a second lens holder and an actuating assembly, wherein two sides of the frame are respectively provided with two rail members, the first lens holder is slidably disposed on one side of the two rail members, the second lens holder is slidably disposed on the other side of the two rail members, the actuating assembly includes a first actuating assembly and a second actuating assembly, the first actuating assembly is disposed on the frame and clamped on the first lens holder and the second lens holder and is used for moving the first lens holder and the second lens holder, the second actuating assembly is disposed on the second lens holder and is used for generating a driving force, and the second actuating assembly drives the second lens holder to move relative to the first lens holder in response to the driving force being greater than the maximum static friction force between the first actuating assembly and the second lens holder. In some embodiments, the first lens holder has a first clamping member with a first clamping portion, the second lens holder has a second clamping member with a second clamping portion and a third clamping portion. The first actuating assembly is clamped at the first clamping part, the second clamping part and the third clamping part. In some embodiments, the first actuating assembly includes a friction rod and a piezoelectric assembly, the first piezoelectric assembly is connected to one end of the friction rod, and the first clamping portion is located between the piezoelectric assembly and the second clamping portion. In some embodiments, the second actuating assembly comprises a traveling wave driving member, the traveling wave driving member is fixed on the second lens holder and provided with a friction member, the friction member is contacted with the friction rod, and the traveling wave driving member is used for actuating the friction member to drive the friction member to generate driving force corresponding to the traveling wave direction on the friction rod. In some embodiments, the first clamping member and the second clamping member respectively have two clamping arms. In some embodiments, the first actuating assembly further includes an elastic member coupled to the first piezoelectric assembly, the elastic member being actuated in response to the first piezoelectric assembly to produce a corresponding deformation. In some embodiments, the two guide rail members include a first ball set and a second ball set, wherein the first ball set is located at one side of the frame body, and the second ball set is located at the other side of the frame body. The first lens base and the second lens base slide the first ball groups and the second ball groups. In some embodiments, the imaging lens driving apparatus further includes a controller. The controller is electrically connected with the first actuating component and the second actuating component and is used for generating a first control signal and a second control signal, the first actuating component generates first movement according to the first control signal, and the second actuating component generates second movement according to the second control signal. In some embodiments, the two sides of the first lens base and the two guide rail members are magnetically attracted to slide on the two guide rail members, and the two sides of the second lens base and the two guide rail members are magnetically attracted to slide on the two guide rail members. In some embodiments, the first mirror base has a first sliding groove and a second sliding groove on two sides, the first sliding groove is slidably disposed on one of the two rail members, the second sliding groove is slidably disposed on the other of the two rail members, the first sliding groove is one of a U-shape and a V-shape, and the second sliding groove is the other of the U-shape and the V-shape. In summary, in the zoom mode, the imaging lens driving device drives the first lens base and the second lens base to move by the friction force between the first actuating assembly and the first lens base and the second lens base. In the focusing mode, the second lens seat is driven to move relative to the first lens se