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Focal length adjustable lens based on dielectric elastomer driver and preparation method thereof

A dielectric elastomer, adjustable technology, applied in lenses, instruments, optics, etc., can solve the problems of the area of ​​the flexible electrode 5 becoming larger and inconsistent, the inability to ensure the same size of the groove, and the poor zoom imaging effect, etc., to achieve zooming. The imaging effect is good, the dielectric constant is improved, and the response speed is fast.

Active Publication Date: 2021-06-08
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still the following problems: First, the lens driver of this patent is prepared by bonding the first dielectric elastomer film and the second dielectric elastomer film, that is, it adopts two layers of dielectric elastomer film bonding In the finished lens driver, when the flexible electrode is powered on, the area of ​​the flexible electrode 5 on the first dielectric elastomer film 1 and the area of ​​the flexible electrode 5 on the second dielectric elastomer film 2 become inconsistent.
Secondly, the grooves on the first dielectric elastomer film and the second dielectric elastomer film are obtained by manual suction of a soft plastic water bottle. First, the volume of the two grooves cannot be guaranteed to be the same, and second, it is laborious and inefficient.
Both of the above two factors will lead to the problems of poor zoom imaging effect, unclear imaging and deformation of the zoom cavity lens produced by it.

Method used

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  • Focal length adjustable lens based on dielectric elastomer driver and preparation method thereof
  • Focal length adjustable lens based on dielectric elastomer driver and preparation method thereof
  • Focal length adjustable lens based on dielectric elastomer driver and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like figure 1 , 2 , 3, 4, 5, 6, 7, and 8, a focus-adjustable lens based on a dielectric elastomer driver includes a lens body 11, and the dielectric elastomer driver includes a The dielectric elastomer annular film 1 that adjusts the focal length of the lens by controlling the radius of curvature of the lens body 11, the flexible electrodes 2 arranged on the upper and lower surfaces of the dielectric elastomer annular film 1, and the dielectric elastomer annular film after pre-stretching The upper and lower surfaces of the membrane 1 are symmetrically arranged along the edge of the dielectric elastomer annular membrane 1 and are used for fixing and supporting the ring frame 3 . Wherein, the electrode material can be graphite powder, carbon nanotubes, and nano silver. In this embodiment, the flexible electrode adopts conductive carbon grease, and the material of the ring frame 3 is plexiglass, and the ring frame 3 is fixed on the dielectric elastomer ring by pasting. f...

Embodiment 2

[0052] A method for preparing a focal length adjustable lens based on a dielectric elastomer driver, comprising the steps of:

[0053] (1) Copper phthalocyanine particles are dispersed in n-heptane and ultrasonically treated to obtain a copper phthalocyanine-n-heptane mixture, and then the mixture is added to a two-component silicone rubber solution and stirred to obtain a silicone rubber ink, Standby; wherein, the ultrasonic treatment time is 6min, the stirring method is magnetic stirring, and the stirring time is 12min.

[0054] (2) Using electrojet printing technology, first print the lower layer of transparent silicone rubber film body, then use the silicone rubber ink obtained in step (1) to print along the circumference of the lower layer of transparent silicone rubber film body to obtain a dielectric elastomer annular film, and then move To an oven, dry and solidify to obtain a dielectric elastomer; set the temperature of the oven to 110° C., and dry for 1.5 hours until...

Embodiment 3

[0060] A method for preparing a focal length adjustable lens based on a dielectric elastomer driver, comprising the steps of:

[0061] (1) Copper phthalocyanine particles are dispersed in n-heptane and ultrasonically treated to obtain a copper phthalocyanine-n-heptane mixture, and then the mixture is added to a two-component silicone rubber solution and stirred to obtain a silicone rubber ink, Standby; wherein, the ultrasonic treatment time is 8 minutes, the stirring method is magnetic stirring, and the stirring time is 15 minutes.

[0062] (2) Using electrojet printing technology, first print the lower layer of transparent silicone rubber film body, then use the silicone rubber ink obtained in step (1) to print along the circumference of the lower layer of transparent silicone rubber film body to obtain a dielectric elastomer annular film, and then move to an oven for drying and curing to obtain a dielectric elastomer; the temperature of the oven is set to 120° C., and the dr...

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Abstract

The invention relates to the technical field of depth-of-field 3D imaging, zoom imaging, robot vision systems and the like, in particular to a focal length adjustable lens based on a dielectric elastomer driver. The focal length adjustable lens comprises a lens body, and the dielectric elastomer driver comprises a dielectric elastomer annular film, a flexible electrode and an annular frame. The lens body comprises a lower-layer transparent silicone rubber film body which is arranged at the central position of the dielectric elastomer annular film and is integrally cured and formed with the dielectric elastomer annular film, a hemispherical cavity with an upward opening is formed in the lower-layer transparent silicone rubber film body through a vacuum suction device, the hemispherical cavity is filled with a transparent liquid medium, and an upper-layer transparent silicon rubber film body for covering and sealing the transparent liquid medium is arranged above the transparent liquid medium. The invention further discloses a method for preparing the focal length adjustable lens. According to the invention, good zoom imaging effect, high electromechanical performance, fast response speed, long service life, high automation degree, high preparation efficiency, simple process and low cost can be realized.

Description

technical field [0001] The invention relates to technical fields such as depth-of-field 3D imaging, zoom imaging, and robot vision systems, and in particular to a focal length-adjustable lens based on a dielectric elastomer driver and a preparation method thereof. Background technique [0002] Soft robots are a new type of bionic continuum robots composed of soft-actuated materials. Compared with traditional rigid-body robots, soft-body robots have the characteristics of high structural softness, good environmental adaptability, strong affinity, diverse functions, and can greatly change the body shape. They have broad research and application prospects in unstructured environments. . It is a trend in the future to develop soft robots that can achieve more complex deformation and motion, and can be reprogrammed to adapt to environmental changes. [0003] For soft robots, embedded flexible actuators are one of the most important components, driven by them, soft robots can co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/14
CPCG02B3/14
Inventor 江亮王玉浩周彦粉刘占旭周邦泽李晨晨周奉磊陈韶娟
Owner QINGDAO UNIV
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