CN-224203495-U - Optical lens capable of detecting focusing movement position in real time and imaging device

CN224203495UCN 224203495 UCN224203495 UCN 224203495UCN-224203495-U

Abstract

The utility model discloses an optical lens capable of detecting a focusing movement position in real time and an imaging device, and relates to the technical field of optical lenses, wherein the optical lens capable of detecting the focusing movement position in real time comprises a lens barrel, a movement group, a driving structure and a detection structure, and the lens barrel is provided with a cavity; the detection structure comprises an induction sensor component and a trigger body for triggering the induction sensor component, the trigger body is arranged in the moving group, and the induction sensor component is correspondingly arranged in the lens barrel so that the induction sensor component records the relative movement position of the trigger body in the moving process of the moving group. The scheme detects the position in the moving process of the moving group through the detection structure, and achieves the control of the real-time position of the optical lens.

Inventors

WANG CANJUN
LI ZHONGJIE
RAO QINHE

Assignees

中山联合光电科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250408

Claims (9)

1. An optical lens capable of detecting a focusing movement position in real time, comprising: The lens barrel is provided with a cavity; The moving group is movably arranged in the cavity along the length direction of the lens barrel; A driving structure connected with the moving group for driving the moving group to move, and The detection structure comprises an induction sensor assembly and a trigger body for triggering the induction sensor assembly, wherein the trigger body is arranged on the moving group, and the induction sensor assembly is correspondingly arranged on the lens barrel, so that the induction sensor assembly records the relative moving position of the trigger body in the moving process of the moving group; the driving structure includes: A focusing ring sleeved outside the lens barrel and connected with the moving group in a transmission way so as to drive the moving group to move along the length direction of the lens barrel when the focusing ring rotates, and And the driving piece is in driving connection with the focusing ring and is used for driving the focusing ring to rotate.
2. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 1, wherein a guide rod extending along a radial direction of the lens barrel is provided on the movement group, and the guide rod protrudes from the lens barrel; The focusing ring is provided with a first guide groove, the length direction of the first guide groove and the optical axis direction of the moving group form an included angle, and the side wall of the first guide groove in the width direction is propped against the peripheral side of the guide rod.
3. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 2, wherein the lens barrel is provided with a second guide groove corresponding to the guide rod, the second guide groove extending in the optical axis direction for guiding the guide rod to move in the optical axis direction.
4. The optical lens for detecting a focus moving position in real time as claimed in claim 3, wherein a size of said first guide groove in an optical axis direction is smaller than a size of said second guide groove in the optical axis direction.
5. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 3, wherein the first guide groove is provided with buffer parts at both sides in a length direction thereof.
6. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 1, wherein the focusing ring is provided with a first gear; The driving member includes: A second gear engaged with the first gear; A step motor for driving the second gear to rotate, and The mounting bracket is arranged outside the lens barrel and used for mounting the stepping motor.
7. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 6, wherein the mounting bracket is covered on the first gear to limit a rotation range of the first gear.
8. The optical lens capable of detecting a focusing movement position in real time as claimed in claim 1, wherein the sensor assembly comprises a PCB circuit board soldered with a TMR chip, the trigger body comprises a sensing magnet, and the PCB circuit board soldered with the TMR chip is capable of detecting a relative position of the sensing magnet in real time.
9. An imaging apparatus comprising the optical lens capable of detecting a focus moving position in real time as claimed in any one of claims 1 to 8.

Description

Optical lens capable of detecting focusing movement position in real time and imaging device Technical Field The utility model relates to the technical field of optical lenses, in particular to an optical lens capable of detecting a focusing movement position in real time and an imaging device. Background The zoom lens is widely applied to a plurality of fields such as security monitoring, consumer electronics, automobiles, medical treatment and the like by virtue of the characteristic of flexibly adjusting focal length and rapidly adapting to different scenes. The existing zoom lens is usually zoomed through a voice coil motor or a stepping motor, however, because the existing driving mode is not accurate enough, especially after the lens is used for a long time, the moving group cannot accurately reach the position of a specific required focal length, and how to design an optical lens capable of accurately controlling the position of the lens is a problem to be solved in the present day. Disclosure of utility model The utility model mainly aims to provide an optical lens capable of detecting a focusing movement position in real time and an imaging device, and aims to solve the problem that the existing optical lens cannot accurately control the lens position. In order to achieve the above object, the present utility model provides an optical lens capable of detecting a focusing movement position in real time, comprising: The lens barrel is provided with a cavity; The moving group is movably arranged in the cavity along the length direction of the lens barrel; A driving structure connected with the moving group for driving the moving group to move, and The detection structure comprises an induction sensor component and a trigger body used for triggering the induction sensor component, wherein the trigger body is arranged on the moving group, and the induction sensor component is correspondingly arranged on the lens barrel so as to record the relative moving position of the trigger body in the moving group moving process. In one embodiment, the driving structure includes: A focusing ring sleeved outside the lens barrel and connected with the moving group in a transmission way so as to drive the moving group to move along the length direction of the lens barrel when the focusing ring rotates, and And the driving piece is in driving connection with the focusing ring and is used for driving the focusing ring to rotate. In one embodiment, the moving group is provided with a guide rod extending along the radial direction of the lens barrel, and the guide rod extends out of the lens barrel; The focusing ring is provided with a first guide groove, the length direction of the first guide groove and the optical axis direction form an included angle, and the side wall of the first guide groove in the width direction abuts against the peripheral side of the guide rod. In an embodiment, the lens barrel is provided with a second guide groove corresponding to the guide rod, and the second guide groove extends along the optical axis direction and is used for guiding the guide rod to move along the optical axis direction. In one embodiment, the first guide groove has a smaller dimension in the optical axis direction than the second guide groove. In one embodiment, buffer parts are disposed on two sides of the first guide groove in the length direction. In one embodiment, the focusing ring is provided with a first gear; The driving member includes: A second gear engaged with the first gear; A step motor for driving the second gear to rotate, and The mounting bracket is arranged outside the lens barrel and used for mounting the stepping motor. In an embodiment, the mounting bracket is covered on the first gear to limit the rotation range of the first gear. In one embodiment, the sensing sensor assembly comprises a PCB circuit board welded with a TMR chip, the trigger body comprises a sensing magnet, and the PCB circuit board welded with the TMR chip can detect the relative position of the sensing magnet in real time. The utility model also provides an imaging device, which comprises the optical lens capable of detecting the focusing movement position in real time, and the optical lens capable of detecting the focusing movement position in real time comprises: The lens barrel is provided with a cavity; The moving group is movably arranged in the cavity along the length direction of the lens barrel; A driving structure connected with the moving group for driving the moving group to move, and The detection structure comprises an induction sensor component and a trigger body used for triggering the induction sensor component, wherein the trigger body is arranged on the moving group, and the induction sensor component is correspondingly arranged on the lens barrel so as to record the relative moving position of the trigger body in the moving group moving process. According to the technical scheme, the movable group is movably arr