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Full-paper base micro-lens array

A micro-lens array and micro-lens technology, applied in the directions of lenses, optics, instruments, etc., can solve the problems of insoluble, no thermoplasticity of paper, unsuitable micro-structure array, etc., and achieve low cost, good solvent resistance and heat resistance. Effect

Active Publication Date: 2019-08-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because ordinary paper is opaque, it is generally believed that paper cannot be used to make microlens arrays, and paper is not thermoplastic, and it is difficult to dissolve under normal temperature and pressure. The current preparation methods for microstructure arrays are not applicable.
Therefore, no paper-based microlens array structure has yet appeared.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Place the wet pure wood cellulose fiber paper on the closely arranged concave spherical microlens array template, then cover the paper with filter membrane and multi-layer filter paper in turn, apply a pressure of about 0.1-10MPa, and wait for 2 hours After the paper is completely dried and released from the mold, a densely arranged convex spherical microlens array can be obtained, the diameter of the structural unit is 500nm, and the period is 500nm.

Embodiment 2

[0023] Place the wet pure wood cellulose fiber paper on the non-tightly arranged concave spherical microlens array template, and then cover the paper with filter membrane and multi-layer filter paper in turn, apply a pressure of about 0.1-10MPa, after 2 hours After the paper is completely dry and demolded, a non-closely arranged convex spherical microlens array can be obtained, the diameter of the structural unit is 6.5 μm, and the period is 6.5 μm.

Embodiment 3

[0025] Place the wet pure wood cellulose fiber paper on the non-closely arranged convex spherical microlens array template, and then cover the paper with filter membrane and multi-layer filter paper in turn, apply a pressure of about 0.1-10MPa, and after 2 hours After the paper is completely dry and demolded, a non-closely arranged concave spherical microlens array can be obtained, the diameter of the structural unit is 50 μm, and the period is 40 μm.

[0026] Example 3:

[0027] Place the wet pure bamboo cellulose fiber paper on the tightly arranged convex free-form surface microlens array template, and then cover the paper with filter membrane and multi-layer filter paper in sequence, apply about 0.1-10MPa pressure, after 2 Wait until the paper is completely dry, and after demolding, a microlens array with a tightly arranged concave free-form surface can be obtained. The diameter of the structural unit is 500 μm, and the period is 500 μm.

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Abstract

The invention provides a full-paper base micro-lens array, and belongs to nano / micron micro-structure materials. The full-paper base micro-lens array comprises a substrate of cellulosic fiber and a plurality of micro lenses of the cellulosic fiber, the multiple micro lenses are periodically distributed on the surface of the substrate in an arrangement mode, and the micro lenses and the substrate are of an integrated structure. The cellulosic fiber is extracted from herbaceous plants or woody plants, and any external additives do not contained. Compared with traditional glassy micro lenses andresin micro lenses, the full-paper base micro-lens array has the characteristics of low cost, flexibility, green and environmental protection and the like, and can be widely applied to aspects such asimaging, displaying and sensors.

Description

technical field [0001] The invention relates to an all-paper-based microlens array, which belongs to nano / micro microstructure materials. Background technique [0002] Microlens array refers to the arrangement and combination of a certain number of micro-nano-scale spherical or free-form lenses. It is a key component of the next-generation 3D imaging system. It has a large field of view, small aberration and distortion, high temporal resolution, and infinite depth of field. and other good optical properties. Artificial microlens arrays have important potential in various applications in imaging systems. For example, microlens arrays are suitable for extremely miniaturized imaging systems and three-dimensional light field cameras; high-quality microlens arrays can also be applied to color imaging systems, three-dimensional image acquisition systems, and fingerprint recognition systems. [0003] Microlens array materials are diverse, and traditional manufacturing materials i...

Claims

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Application Information

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IPC IPC(8): G02B3/00
CPCG02B3/0006G02B3/0056
Inventor 祝名伟吴佳扬黄大方陈延峰
Owner NANJING UNIV
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