Piezo-electricity drive type optical lens

An optical lens, piezoelectric drive technology, applied in the field of optical lens, to achieve the effect of simplifying the sturdiness, simplifying the components, and easy to assemble

Inactive Publication Date: 2008-06-25
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned shortcomings of the prior art, how to provide a piezoelectric-driven optical lens to achieve the functions of large driving torque, small size, simple component

Method used

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  • Piezo-electricity drive type optical lens
  • Piezo-electricity drive type optical lens
  • Piezo-electricity drive type optical lens

Examples

Experimental program
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Effect test

Example

[0076] first embodiment

[0077] like Figure 5 As shown in FIG. 6 , the present invention provides a piezoelectric-driven optical lens, which includes a lens body 2 , a piezoelectric actuator 3 for providing driving force, and a position sensing device 4 for sensing position changes. The lens body 2 at least has a hollow seat body 21 communicating with the outside to form a light hole 211, a lens barrel 22 positioned in the hollow seat body 21 that can move axially along the axis of the light hole 211, and fixed to the lens barrel 22 and mirror group 23 corresponding to the axis of the optical hole 21. The piezoelectric actuator 3 is disposed between the hollow base body 21 and the lens barrel 22 for driving the lens barrel 22 to move axially relative to the hollow base body 21 for zooming. The position sensing device 4 is arranged in the hollow seat 21 to sense the axial position of the lens barrel 22 relative to the hollow seat 21, thereby simplifying the piezoelectric-...

Example

[0089] second embodiment

[0090] Please refer to Fig. 7, the difference between this embodiment and the first embodiment is only in the design and arrangement position of the piezoelectric actuator 3', and the hollow base 21, lens barrel 22, lens group 23, and the design of the position sensing device 4 are roughly the same, and only part of the structural design of the piezoelectric actuator 3' has been adjusted to the configuration position, so the same part will not be described repeatedly, and the component symbols will not be redefined. In order not to go into too much detail, only the differences are described below, which are hereby explained.

[0091] As shown in Figure 7, the lens body 2 also includes a wear-resistant part 26 located outside the lens barrel 22, and the piezoelectric actuator 3' is fixed on the inner surface of the hollow seat body 21, and makes the wear-resistant The part 26 is kept in contact with the piezoelectric actuator 3', that is, the wear-...

Example

[0092] third embodiment

[0093] Please refer to Fig. 8, the difference between the present embodiment and the second embodiment is only in the design and arrangement position of the piezoelectric actuator 3", and the hollow seat body 21, lens barrel 22, lens group 23, And the design of the position sensing device 4 is the same, so the same part will not be described repeatedly, and the component symbols will not be redefined, so as not to repeat it too much. Only the differences will be described below, which is hereby explained.

[0094] As shown in FIG. 8 , the lens body 2 also includes a wear-resistant part 26 located on the outside of the lens barrel 22, and the piezoelectric actuator 3" includes a wear-resistant part 26 fixed on the outside 22 of the lens barrel and is relatively far away from the wear-resistant part 26. The prestressing device 32", and the piezoelectric stator 31" fixed on the inner surface of the hollow seat body 21 and kept in contact with the wear-...

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Abstract

A piezoelectric drive type optical camera lens comprises a camera lens body, a piezoelectric actuator used to provide driving force and a position sensing device used for sensing position change, wherein, the camera lens body at least has a hollow seat body, a lens barrel capable of moving in axial direction and positioned inside the hollow seat body, and a lens group fixed on the lens barrel; the piezoelectric actuator is used to drive the lens barrel to move along axial direction relative to the hollow seat body, thereby completing telescopic zooming; while the position sensing device is used for sensing the axial position of the lens barrel relative to the hollow seat body. Therefore, the simple piezoelectric drive type optical camera lens is formed through adopting the members, and overcomes the disadvantage of complicated members of the prior art.

Description

technical field [0001] The invention relates to an optical lens, in particular to a piezoelectric driven optical lens. Background technique [0002] In recent years, the optical system used in mobile phones or cameras, due to the limitation of its own thickness, will make the structure of the optical system and actuator as simple as possible, and the volume as small as possible, so as to adapt to the development trend of low architecture of such devices. Piezoelectric actuators have the advantages of small size, large output, low power consumption, silence and high compatibility, and are used in digital cameras or camera phones to drive optical lenses to make the optical lenses zoom in Or the effect of zooming out has become one of the important technologies of optical systems or related products. [0003] my country's announcement No. 589777 invention patent discloses a multi-layer thin-disc piezoelectric actuated ultrasonic motor, which is to pass the piezoelectric materi...

Claims

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Application Information

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IPC IPC(8): G02B7/04H01L41/00
Inventor 苏汉威胡朝彰
Owner IND TECH RES INST
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