CN-117769680-B - Hybrid zoom drive actuator

CN117769680BCN 117769680 BCN117769680 BCN 117769680BCN-117769680-B

Abstract

The hybrid zoom driving actuator according to the present invention is characterized by comprising a first carrier on which a first lens is mounted, a second carrier on which the second lens is mounted on the upper or lower part of the first carrier with reference to the optical axis direction, a case accommodating the first carrier and the second carrier, a first driving unit for moving the first carrier in the optical axis direction, a driving magnet mounted on the second carrier, a driving coil facing the driving magnet and providing a driving force so that the second carrier moves in the optical axis direction, a hall sensor for sensing the position of the second carrier, and a first circuit board on which the driving coil and the hall sensor are mounted.

Inventors

YAN JICHENG
JIANG YINZHU
ZHAO XIANYI
LI ZAISHAN

Assignees

磁化电子公司

Dates

Publication Date: 20260512
Application Date: 20220704
Priority Date: 20210817

Claims (7)

1. A hybrid zoom driving actuator, comprising: a first carrier on which a first lens is mounted; a second carrier disposed on an upper portion or a lower portion of the first carrier with reference to an optical axis direction, the second carrier being mounted with a second lens; a housing that accommodates the first carrier and the second carrier; a first driving unit that moves the first carrier in an optical axis direction; A driving magnet mounted on the second carrier; a driving coil facing the driving magnet and providing driving force in such a manner that the second carrier moves in the optical axis direction; a Hall sensor for sensing the position of the second carrier, and A first circuit board, the driving coil and the Hall sensor are arranged on the first circuit board, The second carrier comprises: A second mounter on which the second lens is mounted, and A second support portion provided on one of left and right sides of the second mounter and having a shape extending from the second mounter with reference to an optical axis direction, the driving magnet being mounted on the second support portion, The first carrier includes: A first mounter on which the first lens is mounted; a first support part provided with the first circuit board on the outer side and including a first accommodation part for providing a movement space of the second support part, the first support part being arranged on one of the left side and the right side of the first mounter, and A first guide provided on the opposite side of the first supporting portion in the left or right side of the first mounter, The first support portion or the first guide is physically connected to the first driving portion.
2. The hybrid zoom driving actuator of claim 1, wherein, The first circuit board is disposed on the first carrier so as to move in the optical axis direction together with the first carrier.
3. The hybrid zoom-drive actuator of claim 2, wherein, Further comprising a driver that controls the drive coil to apply power of a magnitude and a direction corresponding to the signal value of the hall sensor, When the first carrier moves, the driver controls the movement of the second carrier in a manner corresponding to the movement direction and the size of the first carrier.
4. The hybrid zoom driving actuator of claim 1, wherein, The second carrier is arranged in a movement space provided by the first carrier, The first carrier includes a stopper structure that sets a movement range of the second carrier.
5. The hybrid zoom driving actuator of claim 1, wherein, The first support portion has a shape extending from the first mounter with reference to an optical axis direction, and has a shape extending in a direction opposite to an extending direction of the second support portion.
6. The hybrid zoom driving actuator of claim 1, wherein, The second carrier further includes a second guide provided on the opposite side of the second support portion in the left or right side of the second mounter, The first guide of the first carrier includes a second receiving portion providing a moving space of the second guide.
7. The hybrid zoom driving actuator of claim 6, wherein, The first carrier includes: A first guide rail formed on the first support part and facing the first groove rail formed on the second support part, and A second guide rail formed at the first guide member and facing a second groove rail formed at the second guide member, One of the first support portion or the first guide member, which is not connected to the first driving portion, includes a groove rail facing a guide rail formed at the housing, The device further comprises balls which are respectively arranged between the guide rail and the groove rail, between the first guide rail and the first groove rail and between the second guide rail and the second groove rail.

Description

Hybrid zoom drive actuator Technical Field The present invention relates to a zoom driving actuator, and more particularly, to a hybrid zoom driving actuator capable of further stably improving driving performance determined according to an extended moving distance of a lens using a binarized driving source. Background With the development of hardware technology for image processing and the increase of user demands for image photographing and the like, functions of Auto Focus (AF), optical Image Stabilization (OIS) and the like have been implemented in camera modules and the like mounted in mobile terminals such as mobile phones, smart phones and the like, as well as in independent camera devices. Further, recently, an actuator for a Zoom lens capable of variously changing the size of an object or the like by a Zoom-in function (Zoom-in) and a Zoom-out function or the like, and an actuator for realizing the Zoom function more variously by an auto focus function (AF) and a positional relationship of a plurality of lenses (lens assemblies) applied in combination have been disclosed. In the case of such an actuator for a zoom lens, since the moving distance (also referred to as stroke) of the zoom lens moving in the optical axis direction is extended or expanded compared with a normal lens, it is preferable to design to sufficiently secure the driving force and improve the time response characteristic. However, in the case of the actuator of the related art, since the independent movement space of each of the plurality of carriers is designed to be secured, the space utilization is reduced accordingly, and the size of the actuator itself is increased accordingly, so that it can be said that it is difficult to apply the actuator to an application device such as a smart phone, in which thickness, volume, and the like become important problems. Further, in the case of the actuator of the related art, the driving parts that drive the respective carriers are also individually provided as many as the carriers, and the respective driving parts utilize magnetic force or electromagnetic force between the coil and the magnet, so that magnetic field interference or the like may be generated between the driving parts that are required to realize independent driving. Therefore, in the case of the actuator of the related art, in order to prevent such magnetic field interference or the like, the respective driving portions need to be arranged apart, and therefore, there is also a decrease in space utilization. In addition, in the case where magnetic force or the like between the coil and the magnet is used as the driving force of the carrier, in order to increase the driving force, it is necessary to increase the size of the coil and the magnet, and in order to relatively improve the space utilization, a more complicated and precise structure is required to avoid magnetic field interference or the like, so that it can be said that the efficiency of the manufacturing or assembling process or the like is also lowered. Disclosure of Invention Technical problem to be solved The present invention has been made to solve the above-described problems in the background, and an object of the present invention is to provide a hybrid zoom driving actuator capable of more effectively improving the accuracy of driving force increase and driving performance of zooming or AF, and also more effectively realizing space utilization of the actuator. Other objects and advantages of the present invention will be understood by the following description and will become more apparent by the embodiments of the present invention. The object and advantages of the present invention can be realized by the structures and combinations thereof recited in the appended claims. Means for solving the problems The hybrid zoom driving actuator according to an embodiment of the present invention for achieving the above object may include a first carrier on which a first lens is mounted, a second carrier on which a second lens is mounted on an upper or lower portion of the first carrier with reference to an optical axis direction, a housing accommodating the first carrier and the second carrier, a first driving section for moving the first carrier in the optical axis direction, a driving magnet mounted on the second carrier, a driving coil facing the driving magnet for providing a driving force so that the second carrier moves in the optical axis direction, a hall sensor for sensing a position of the second carrier, and a first circuit board on which the driving coil and the hall sensor are mounted. Wherein the first circuit board of the present invention is preferably configured to be disposed on the first carrier so as to move in the optical axis direction together with the first carrier. Preferably, the actuator of the present invention may further include a driver that controls the drive coil so as to apply electric power of a magnitude and a direction correspo