Electromagnetic type lens driving device
A lens driving device, electromagnetic technology, applied in the direction of electromechanical devices, installation, electrical components, etc., can solve the problems such as the inability of products to be light and thin, and the inability to further reduce the volume of zoom lenses.
Active Publication Date: 2013-11-06
TDK TAIWAN
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Problems solved by technology
[0004] With the rapid development of science and technology, traditional special-purpose photography devices not only continuously improve the image quality but also move towards the goal of lightness, thinness, shortness, and smallness, so as to be suitable for new products in the diversified information age, and use step-by-step The zoom lens driven by the motor mechanically has the disadvantage that the size cannot be further reduced, which is one of the factors that affect the overall product cannot be thinned
Method used
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[0029] In order to describe the electromagnetic lens driving device proposed by the present invention more clearly, the following will be described in detail with the accompanying drawings.
[0030] see figure 2 , image 3 , Figure 4A , Figure 4B As shown, wherein, the electromagnetic lens driving device 1 defines a central axis 5, and the electromagnetic lens driving device 1 includes: an upper cover 11, a housing 12, a lens module 13, and a positioning structure 14 , an electromagnetic driving module 15 , a sensing module 16 , a circuit board 17 , and a housing 18 . The central axis 5 includes two axis directions: a front 51 and a rear 52 .
[0031] The upper cover 11 is a hollow ring-shaped cover body, and the housing 12 is a hollow seat body. When the upper cover 11 and the housing 12 are combined with each other, they essentially constitute a central housing with an accommodating space 122 inside. The shell structure is hollow, and a plurality of accommodating gro...
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An electromagnetic type lens driving device comprises an upper cover, a shell, a lens module, a positioning structure and an electromagnetic driving module, wherein the upper cover is provided with a hollow cover body which is combined on the shell, and an accommodating space is formed at the inner part of the shell; the lens module is arranged in the accommodating space; the positioning structure is connected between the lens module and the shell, can be used for limiting the lens module in the accommodating space and can also be used for producing a frictional force; and the electromagnetic driving module is arranged in the accommodating space and is corresponding to the lens module. By relying on a magnetic repelling force or an attractive force produced by the electromagnetic driving module, the lens module can be driven to move along a central axis in the accommodating space and can be kept being positioned without moving after power outage through the frictional force of the positioning structure, so the effect of power conservation is achieved.
Description
technical field [0001] The present invention relates to an electromagnetic lens driving device, in particular to an electromagnetic driving module to drive a lens module to move in a casing, and utilize a positioning structure to position the lens module in the casing when the power is off. position in the body. Background technique [0002] see figure 1 as shown, figure 1 It is a three-dimensional exploded schematic diagram of an existing focusing lens. The mechanical transmission type focusing mechanism 9 used in the existing focusing lens uses a high-cost precision driving element 91 as a power source for driving the bearing seat 93 provided with the lens group 92 (for example: a stepping motor, an ultrasonic motor, a press electric actuators....etc) and quite a few transmission elements. It not only makes the mechanical structure complex, but also has the disadvantages of cumbersome and difficult assembly steps, large volume and high cost. At the same time, it also h...
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IPC IPC(8): G02B7/04H02K33/18
Inventor 胡朝彰吴富源黄诗婷
Owner TDK TAIWAN