Microlens array of curved surface and preparation method thereof

A microlens array and microlens technology, applied in other household appliances, coupling of optical waveguides, optical elements, etc., can solve problems such as the difficulty of directly applying microlens arrays, achieve simple, reliable and feasible process, low cost, and reliable structure control effect

Inactive Publication Date: 2009-01-14
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of microlens arrays on curved surfaces is a technical difficulty. The conventional preparation methods of microlens arrays are all planar preparation processes, and it is difficult to directly apply them to the preparation of microlens arrays on curved surfaces.

Method used

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  • Microlens array of curved surface and preparation method thereof

Examples

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Embodiment 1

[0016] Embodiment 1: the polymethyl methacrylate (PMMA) fiber surface that is 1000 μ m in diameter is coated with a layer of nickel metal layer with a thickness of 100 μ m by electroplating, then after it is assembled into an ordered structure, it is filled with PMMA by melting method to form metal - Polymer composite structure, cut into 1000 μm slices along the direction perpendicular to the fiber axis, place it on a curved substrate and heat it to 150°C to form a microlens array with a curved surface.

Embodiment 2

[0017] Example 2: The surface of a polystyrene (PS) fiber with a diameter of 250 μm is coated with a copper metal layer with a thickness of 5 μm by electroless plating, and then it is assembled into an ordered structure and filled with polystyrene (PS) by polymerization. ) to form a metal-polymer composite structure, cut into 200 μm thin slices along the direction perpendicular to the fiber axis, place it on a curved substrate and heat it to 150°C to form a microlens array with a curved surface.

Embodiment 3

[0018] Example 3: The surface of a PS fiber with a diameter of 200 μm is coated with a layer of copper metal layer with a thickness of 5 μm by electroless plating, and then assembled into an ordered structure and then filled with polymer PS by a solution filling method to form a metal-polymer composite structure, cut into 100 μm thin slices along the direction perpendicular to the fiber axis, and placed them in CHCl 3 On the curved substrate under the atmosphere for 1h, the microlens array with curved surface can be formed.

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Abstract

The invention discloses a curved face surface micro-lens array and a corresponding preparation method. The structure of the micro-lens array is to arrange the micro-lens arrays on the curved face and the micro-lens arrays are mutually isolated. The preparation method includes the following steps: (1) a surface of a polymer fiber I with a diameter of 10 to 1000 Mu m is coated by a layer of an organic, inorganic or metal film with a thickness of 500nm to 100 Mu m; (2) the coated polymer fiber I is assembled into a sequential structure and then a polymer II is filled to get a composite structure; (3) the composite structure is cut into sheets of 5 to 1000 Mu m and then the sheets are placed onto a bended underlay to convert the sheets into the micro-lens array with the curved face. The invention is provided with novel structure and simple preparation and can be widely applied to the optical, photoelectric and information fields, etc.

Description

technical field [0001] The invention relates to a microlens array on a curved surface and a preparation method thereof, and belongs to the technical field of material microstructure and preparation thereof. Background technique [0002] Microlens arrays are important elements in modern optics. Microlens arrays can correct light beams, optical connections, and imaging, so they have been widely used in display, information processing, microlithography and other fields. The microlens array on the curved surface has special applications, such as optical detection of large field of view, judgment and recognition of high-speed objects, etc. At present, the preparation of microlens arrays on curved surfaces is a technical difficulty. The conventional preparation methods of microlens arrays are planar preparation processes, and it is difficult to directly apply them to the preparation of microlens arrays on curved surfaces. Therefore, it is necessary to obtain microlens arrays wit...

Claims

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Application Information

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IPC IPC(8): G02B6/255B29D11/00
Inventor 祝名伟陈延峰陆延青王振林沈海嵩
Owner NANJING UNIV
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