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Microlens array with small aberration

A microlens array and aberration technology, applied in the field of microlens arrays, can solve problems such as large aberrations, and achieve the effects of low production cost and simple structure

Inactive Publication Date: 2011-10-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But above-mentioned liquid lens unit only comprises one deck oil and water, promptly has only a single spherical mirror, in order to realize shorter focal length, usually need make the single spherical surface that oil and water contact surface form have less radius, and less radius then will produce large aberrations

Method used

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  • Microlens array with small aberration

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Embodiment Construction

[0013] figure 1 Shown is a cross-sectional structure diagram of a preferred solution of the microlens array of the present invention, and the microlens array is mainly composed of a polymer lens 1 and a liquid lens. The polymer lens 1 has a fixed focal length, and can use UV-curable liquid crystal diacrylate monomers (the UV-curable LC diacrylate monomers) to form a film lens with a gradient refractive index (Reference 1: 'Flat polymeric microlens array', Optics Communications 261 (2006) 296-299), the liquid crystal molecules will deflect according to the strength of the applied electric field. In addition, because the liquid crystal molecules have birefringence characteristics, the refractive index of light is different at different deflection angles. When the applied electric field has a rotationally symmetrical structure , it can be formed with figure 1 Gradient-index thin-film lens shown in . The liquid lens has a variable focal length. The first substrate 3 is a transpa...

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Abstract

The invention discloses a microlens array with smaller aberration, the microlens array is composed of a polymer lens (1) and a liquid lens, the polymer lens (1) is positioned on the upper side or the lower side of the liquid lens; the liquid lens comprises a first substrate (3), a mesh-shaped electrode (2), a drainage layer (5), a mesh-shaped partition (4), a nonpolarity oil (6), an electrolyte water (7), a transparent electrode (8) and a second substrate (9), the focal distance of the polymer lens (1) of the invention is fixed, the focal distance of the liquid lens can be adjusted, the integral diopter of the lens unit is the sum of the polymer lens (1) and the liquid lens, thereby implementing the larger diopter, meanwhile, the liquid lens has larger curvature radius and smaller aberration.

Description

technical field [0001] The invention relates to a microlens array, in particular to a microlens array with less aberration. Background technique [0002] The applicant disclosed a variety of liquid lens arrays based on electrowetting in patent applications 200710133932.3, 200810018937.6, 200810024528.7, 200710022982.4, 200810100750.0, 200810100754.9. The above-mentioned liquid lens arrays are ultra-thin, bendable, and realize three-dimensional display. Each liquid lens unit in the lens array is composed of oil and water, and the external voltage can adjust the radius of curvature of the oil and water contact surface, thereby realizing the change of the focal length of the liquid lens. But above-mentioned liquid lens unit only comprises one deck oil and water, promptly has only a single spherical mirror, in order to realize shorter focal length, usually need make the single spherical surface that oil and water contact surface form have less radius, and less radius then Large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/14G02B26/02G02F1/13
Inventor 夏军尹涵春
Owner SOUTHEAST UNIV
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