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All-solid-state variable-focus piezoelectric driving type micro lens based on SEBS film

A piezoelectric drive, micro-lens technology, applied in lenses, optics, instruments, etc., can solve problems such as liquid leakage, inability to zoom zoom range, etc., and achieve the effect of solving liquid leakage, wide zoom range, and low power consumption

Inactive Publication Date: 2020-04-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an all-solid-state variable-focus piezoelectric-driven microlens based on SEBS film, which has small volume, simple structure, low power consumption, no electromagnetic interference, wide zoom range, and improves the traditional microlens that cannot zoom or zoom range Minimizing this defect also solves the problems of liquid leakage and electromagnetic interference in the current variable focus liquid lens

Method used

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  • All-solid-state variable-focus piezoelectric driving type micro lens based on SEBS film
  • All-solid-state variable-focus piezoelectric driving type micro lens based on SEBS film
  • All-solid-state variable-focus piezoelectric driving type micro lens based on SEBS film

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Embodiment 1

[0051] An all-solid-state variable-focus piezoelectric-driven microlens based on SEBS film. Its glass film 2 is silica glass with a thickness of 50 um, and the rubber is made of Kraton G1657. The glass film 2 is harder than the SEBS film and less likely to be deformed; the supporting glass 4 is ordinary glass.

[0052] The piezoelectric actuator is made of piezoelectric ceramic body PZT-5H (lead zirconate titanate), and the process is as follows:

[0053] a. Take out the piezoelectric ceramic powder, add polyvinyl alcohol binder with a concentration of 3%-5%, mix well, granulate and pass through an 80-mesh sieve, take out the powder and put it into the mold, under the pressure of 100-200MPa Down molding to obtain a circular green body of the required size, that is, the piezoelectric actuator green body;

[0054] b. Burn the above-mentioned circular green body to remove the binder organic matter contained therein, while keeping the green body at a certain mechanical strength; ...

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Abstract

The invention relates to the technical field of optics and the field of MEMS, in particular to an all-solid-state variable-focus piezoelectric driving type micro lens based on an SEBS film, which is structurally characterized in that the SEBS film is placed between two glass layers with different thicknesses; and the two annular piezoelectric actuators are respectively bonded on the upper bottom surface and the lower bottom surface of the glass film. When a voltage is applied to the piezoelectric actuator, the piezoelectric actuator forces the glass film to bend, so that a lens structure is integrally formed, and the glass film has different bending curvatures due to different voltages, so that the focal length of the micro lens is changed. The piezoelectric drive type micro lens is a typical micron-sized MEMS integrated product, and has the advantages of small size, low power consumption, no magnetic interference, wide zoom range, quick response and the like.

Description

technical field [0001] The invention relates to the field of optical technology components and the field of MEMS, in particular to an all-solid-state variable-focus piezoelectric-driven microlens based on SEBS film. Background technique [0002] In recent years, with the development of information technology, the performance research of camera based on microlens has become a research hotspot in the current information field. The traditional camera system controls the focal length of the lens to be constant, and uses a voice coil motor to adjust the relative position between the lenses to achieve zooming, so that the overall optical structure occupies a large space. Therefore, traditional microlenses have disadvantages such as complex structure, severe mechanical wear, high energy consumption, electromagnetic interference, and long response time, and are not conducive to miniaturization. At present, experts and scholars at home and abroad have begun to explore microlenses th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/00G02B3/00
CPCG02B3/0081G02B26/00
Inventor 吴玉程王开鹰李刚李廷鱼张文磊余志超孙旭宇杨翠
Owner TAIYUAN UNIV OF TECH
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