CN-224232025-U - Imaging lens driving device

Abstract

An imaging lens driving device comprises a frame body, a first lens seat, a second lens seat and an actuating component. The two guide rail parts are respectively arranged at two sides of the frame body. The first lens seat is arranged on one side of the two guide rail members in a sliding way, and the second lens seat is arranged on the other side of the two guide rail members in a sliding way. The actuating assembly comprises a first actuating piece and a second actuating piece. The first actuating piece is arranged on one side of the frame body and clamped on the first lens seat and the second lens seat. The second actuating piece is arranged on the other side of the frame body and is clamped with the second lens seat. And responding to the fact that the static friction force of the second actuating piece to the second lens seat is larger than that of the first actuating piece to the second lens seat, and the static friction force of the first actuating piece to the second lens seat is larger than that of the second actuating piece to the second lens seat, the first actuating piece moves the first lens seat and the second lens seat, and the second actuating piece selectively moves 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: The two guide rail parts are respectively arranged at two sides of the frame body; 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 The actuating assembly comprises a first actuating piece and a second actuating piece, wherein the first actuating piece is arranged on one side of the frame body and clamped on the first lens seat and the second lens seat; And the first actuating piece moves the first lens seat and the second lens seat, and the second actuating piece selectively moves the second lens seat, wherein the static friction force of the second actuating piece on the second lens seat is larger than the static friction force of the first actuating piece on the second lens seat, and the static friction force of the first actuating piece on the second lens seat is larger than the dynamic friction force of the second actuating piece on 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 member is clamped between the first clamping portion and the second clamping portion, and the second actuating member is clamped between the third clamping portion.
3. 3. The apparatus of claim 2, wherein the first actuator comprises a first friction rod and a first piezoelectric element, the first piezoelectric element is connected to one end of the first friction rod, and the first clamping portion is located between the first piezoelectric element and the second clamping portion.
4. 4. The apparatus of claim 3, wherein the second actuator comprises a second friction rod and a second piezoelectric element, the second piezoelectric element is connected to one end of the second friction rod, and the third clamping portion is located between the second piezoelectric element and the first clamping portion.
5. 5. The imaging lens driving apparatus according to claim 4, wherein the first clamping portion, the second clamping portion and the third clamping portion each have two clamping arms.
6. 6. The imaging lens driving apparatus as claimed in claim 3, wherein the first actuating member further comprises an elastic member connected to the first piezoelectric element, the elastic member being responsive to the first piezoelectric element being actuated to generate corresponding deformation.
7. 7. The apparatus of claim 1, wherein the two guide rail members comprise a first ball group and a second ball group, the first ball group is located at one side of the frame, the second ball group is located at the other side of the frame, and the first lens base and the second lens base slide on the first ball group and the second ball group.
8. 8. The apparatus of claim 1, comprising a controller electrically connected to the first actuator and the second actuator for generating a first control signal and a second control signal, wherein the first actuator generates a first motion according to the first control signal, the second actuator generates a second motion according to the first control signal for generating a dynamic friction force on the second lens holder, and the second actuator generates a third 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 one side of the second lens holder and the second lens holder are magnetically attracted to slide on the other side of the second lens holder.
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 With the downsizing of the imaging lens, zooming or focusing is considered to be performed in a limited space, and the current imaging lens uses a Voice Coil Motor (VCM) to perform automatic focusing or zooming operation. 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 some embodiments, the imaging lens driving device includes a frame, a first lens holder, a second lens holder, and an actuating assembly. The two guide rail parts are respectively arranged at two sides of the frame body. The first lens seat is arranged on one side of the two guide rail members in a sliding way, and the second lens seat is arranged on the other side of the two guide rail members in a sliding way. The actuating assembly comprises a first actuating piece and a second actuating piece. The first actuating piece is arranged on one side of the frame body and clamped on the first lens seat and the second lens seat. The first actuating element is used for moving the first lens seat and the second lens seat when being actuated. The second actuating piece is arranged on the other side of the frame body and clamped on the second lens seat. The second actuating piece is used for moving the second lens seat when being actuated. The static friction force of the second actuating piece to the second lens seat is larger than that of the first actuating piece to the second lens seat, and the static friction force of the first actuating piece to the second lens seat is larger than that of the second actuating piece to the second lens seat. 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 piece is clamped on the first clamping part and the second clamping part, and the second actuating piece is clamped on the third clamping part. In some embodiments, the first actuator includes a first friction rod and a first piezoelectric element, the first piezoelectric element is connected to one end of the first friction rod, and the first clamping portion is located between the first piezoelectric element and the second clamping portion. In some embodiments, the second actuating member includes a second friction rod and a second piezoelectric element connected to one end of the second friction rod, and the third clamping portion is located between the second piezoelectric element and the first clamping portion. In some embodiments, the first clamping portion, the second clamping portion and the third clamping portion are respectively provided with a first elastic arm and a second elastic arm, the first elastic arm and the second elastic arm of the first clamping portion generate a first static friction force on the first friction rod, the first elastic arm and the second elastic arm of the second clamping portion generate a second static friction force on the first friction rod, and the first elastic arm and the second elastic arm of the third clamping portion generate a third static friction force on the second friction rod. The third static friction force is larger than the second static friction force, and the second static friction force is smaller than the dynamic friction force of the second actuating piece to the second lens seat. In some embodiments, the first actuator further comprises a resilient member. The elastic element is connected to the first piezoelectric element, and responds to the first piezoelectric element to be actuated to generate corresponding deformation. In some embodiments, the two guide rail members include a first ball group and a second ball group, the first ball group is located at one side of the frame body, and the second ball group 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 piece and the second actuating piece and is used for generating a first control signal and a second control signal. The first actuating piece generates first movement according to the first control signal, the second actuating piece generates second movement according to the first control signal so as to generate dynamic friction force on the second lens seat, and the second actuating piece generates third 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 magn