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Liquid crystal varifocus lens

A liquid crystal zoom lens and liquid crystal layer technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of discontinuous separation of annular electrodes by electrode leads, deterioration of lens imaging, etc., and achieve improved imaging performance and artificial operation. The effect of small error and simple operation of production method

Active Publication Date: 2013-01-30
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the Fresnel zone pattern electrode surface, multiple annular electrodes that can be controlled by the same voltage are drawn out with one electrode lead. At present, in most technologies, such as the US Patent Publication No. US20050231677 (publication date October 20, 2005 ), the ring-shaped electrode and the electrode lead are formed in the same conductive layer, so within the electrode surface, the ring-shaped electrode is separated by the electrode lead and is discontinuous, resulting in poor imaging of the lens, and due to the electrode lead and the ring-shaped electrode In the same conductive layer, the influence of the electric field of the electrode leads on the liquid crystal layer is not shielded, which further leads to the deterioration of the imaging performance of the lens

Method used

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Embodiment 1

[0042] Embodiment 1 of the present invention provides a liquid crystal lens. In this embodiment, the conduction node includes a conductive point and a small part of non-conductive area adjacent to the conductive point. Specifically, the conduction node includes a first transparent electrode lead segment, a part of the transparent insulating layer and a part of the transparent annular belt electrode, wherein the first transparent electrode lead segment is a part of the transparent electrode lead, and is formed by the second transparent electrode The lead subsection is composed of the third transparent electrode lead subsection. The second transparent electrode lead subsection is covered by the part of the transparent insulating layer, and the third transparent electrode lead subsection is not covered by the part of the transparent insulating layer;

[0043] At the conductive point between the transparent electrode lead and the transparent ring electrode, the part of the transpa...

Embodiment 2

[0048] See Figure 2. Fig. 2(a) shows a schematic diagram of the Fresnel zone pattern electrode surface when the conduction node is a groove structure. The figure shows a Fresnel zone patterned electrode surface comprising six transparent annular zone electrode groups, and each transparent annular zone electrode group contains four transparent annular zone electrodes. That is, the electrode surface contains 24 transparent ring-shaped electrodes. The transparent ring-shaped electrode where the center of the electrode surface is located is the first transparent ring-shaped electrode E1, and from the inside to the outside, it is the i-th transparent ring-shaped electrode Ei (i=1,2,3,4,..., twenty four). Among them, the transparent ring-shaped electrodes E1 to E4 constitute the first transparent ring-shaped electrode group, the transparent ring-shaped electrodes E5 to E8 constitute the second transparent ring-shaped electrode group, ..., and the transparent ring-shaped electrodes...

Embodiment 3

[0057] In order to overcome the above disadvantages, the present invention also provides another conduction mode, that is, a conduction mode in which the conduction node is a protrusion structure, see FIG. 3 for details. Fig. 3(a) is a schematic diagram of the Fresnel zone pattern electrode surface in this embodiment. In this figure, the grouping of the transparent ring-shaped electrodes and the lead-out method of the transparent electrodes are the same as those in the second embodiment, and the only difference lies in the structure of the conductive node and the non-conductive node. For the sake of brevity, the structure of the conduction node will be described here emphatically, and the way of drawing out the lead wires of the transparent ring-shaped electrodes into groups and transparent electrodes will not be described in detail.

[0058]FIG. 3( b ) is an enlarged cross-sectional view in which the conduction node A is a protrusion structure in this embodiment. The conduct...

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Abstract

The invention discloses a liquid crystal varifocus lens. At least one of an upper planar circuit electrode surface and a lower planar circuit electrode surface is a Fresnel zone pattern electrode surface; at least one Fresnel zone pattern electrode surface contains N ring-banded electrode groups; each ring-banded electrode group comprises n ring-banded electrodes; a plurality of ring-banded electrodes at the same opposite positions in different ring-banded electrode groups form the same ring-banded electrode array; all ring-banded electrodes in at least one ring-banded electrode array are led out by an electrode lead; the electrode lead connects all ring-banded electrodes in the same ring-banded electrode array through conductive points at connection nodes; and except the conductive points, the electrode lead is arranged at a position farther away from a liquid crystal layer than the ring-banded electrodes, and the ring-banded electrodes are continuous at the electrode lead, wherein N is a natural number and n is a natural number not less than 2. The lens has good imaging performance.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a liquid crystal zoom lens. Background technique [0002] Lenses are fundamental optics that can be found everywhere in optical instruments and equipment. With the development of optical technology, the requirements for the lens are getting higher and higher. One is to require the focal length of the lens to be continuously adjustable, and the other is to provide a lens with a large focal length. [0003] Liquid crystal has large photoelectric anisotropy and is an excellent photoelectric material. At present, it has been widely used in the manufacture of various optical devices, such as liquid crystal displays, liquid crystal lenses, liquid crystal phase retarders, and liquid crystal filters. [0004] In recent years, with the development of liquid crystals, people have realized continuous zoom Fresnel lenses based on liquid crystal lenses by using liquid crystal analog lenses. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/29G02F1/1343G02F1/13
Inventor 王东岳梁永超李赣湘刘亮何基强李建华
Owner TRULY SEMICON