A kind of variable focus optical lens system and its preparation

An optical lens, a variable technology, applied in the fields of electromechanical and soft machines, materials, and optics, it can solve the problems of being difficult to obtain industrial applications and not found, and achieve the effect of light weight, fast response speed, and high commercial production.

Inactive Publication Date: 2016-11-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For many years, bionic optical systems have been the focus of research, but because people have not found elastic conductors with superior force, electricity, and optics, research in this area has been difficult to obtain industrial applications.

Method used

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  • A kind of variable focus optical lens system and its preparation
  • A kind of variable focus optical lens system and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, adding polymer monomer acrylamide (AAm) into deionized water, fully stirring and dissolving, and preparing a polymer monomer solution with a mass fraction of 1%;

[0038] Step 2, adding metal salt sodium chloride (LiCl) with a concentration of 0.5 mol / L relative to the solvent into the polymer monomer solution, and adding a crosslinking agent N, N- Methylenebisacrylamide, thermal initiator ammonium persulfate with a molecular weight of 228.201g / mol, catalyst N,N,N',N'-tetramethylethylenediamine with a molecular weight of 116.20g / mol, mixed well to obtain a mixed liquid. The mass fraction of the crosslinking agent relative to the macromolecular monomer is 0.001%, the mass fraction of the thermal initiator relative to the macromolecular monomer is 0.001%, and the volume fraction of the catalyst relative to the solvent is 0.001%.

[0039] Step 3: Pour the above mixed solution into spherical segment-shaped glass or plexiglass molds and glass plate or plexiglass pla...

Embodiment 2

[0044] In step 1, 1-butyl-3-methylimidazolium methyl sulfate is selected as the ionic liquid, and 4-15 wt% of hydroxyethyl methacrylate relative to the ionic liquid is added to the ionic liquid.

[0045] Step 2, continue to add 3-5wt% polyethylene glycol dimethacrylate relative to hydroxyethyl methacrylate monomer and 1-2wt% 2-hydroxyl-2 - methylpropiophenone, and stir to mix well.

[0046] Step 3: Pour the above-mentioned mixed solution into a spherical-segment-shaped glass or plexiglass mold and a glass plate or plexiglass plate mold with a silica gel gasket, and place it in an ultraviolet crosslinking instrument for 3 hours to prepare a product with specific Shaped conductive ion gel, the modulus of the ionic liquid gel prepared in this example is 2.0-8.0kPa, and the strain can reach 4-10 times.

[0047] In step 4, the dielectric elastomer film PDMS is biaxially pre-stretched and fixed around it.

[0048] Step 5, aligning and pasting the spherical segment-shaped and sheet...

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PUM

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Abstract

Provided is a variable-focus optical lens system, comprising transparent elastic or flexible ion conductors, and a transparent or partly transparent dielectric elastomer film. The ion conductors and the dielectric elastomer film are combined according to sequence of the ion conductor / the dielectric elastomer film / the ion conductor, so as to form a sandwich structure. The invention also provides a corresponding preparation method. The variable-focus optical lens system is characterized by light weight, good performance, wide material selection, simple preparation process, and convenient business integration. The system is very fast in electric field response speed (theoretical response time is 1-10 ms), and large in operating temperature interval (-100 DEG C to 300 DEG C). The system has excellent mechanical, optical, and electric performance, uses all-solid-state design, and prevents defects of image distortion caused by gravity brought about by a liquid state imaging system, and potential leakage and short circuit risks, and has optical zooming capability superior to human eyes.

Description

technical field [0001] The invention relates to the technical fields of materials, optics, electromechanics and soft machines, in particular to a variable-focus optical lens system and its preparation. Background technique [0002] Adjustable (zoom) optical lenses are widely used. Take the SLR camera as an example. Existing lenses are huge, bulky and expensive. Therefore, adjustable (zoom) optical elements (such as lenses) that do not rely on mechanical rotation mechanisms have always been concerned by technology and industry, especially in mobile devices (such as mobile phones, card cameras, etc.) and medical equipment ( Variable focus optics on space-compact devices such as endoscopes. [0003] Existing technical materials almost focus on the design of the zoom optical system on the solution that the liquid-filled (or liquid) optical unit changes the curvature or refractive index under external excitation (stimulus) to achieve zooming. This type of scheme has defects su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/14G02B26/02
CPCG02B3/14G02B26/005
Inventor 陈咏梅陈宝鸿周进雄
Owner XI AN JIAOTONG UNIV
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