Variable-focus liquid crystal lens of arc-shaped columnar cavity and electrode

Abstract

The invention discloses a variable-focus liquid crystal lens of an arc-shaped columnar cavity and an electrode. The variable-focus liquid crystal lens mainly comprises a protective shell, a driving module, an upper electrode, a lower electrode, a liquid crystal orientation layer and a liquid crystal, wherein the upper electrode, the lower electrode, the liquid crystal orientation layer and the liquid crystal are arranged in the protective shell. After the liquid crystal is poured, liquid crystal molecules can be uniformly distributed according to an uniform arc-shaped columnar filling space, and then the liquid crystal molecules are oriented and arranged according to a direction required by experimental research through an orientation effect so that the liquid crystal molecules have a certain deflection angle when an external electric field is not applied. Therefore, when larger-range zooming is required subsequently, the liquid crystal molecules need to be rotated by a larger angle through an external voltage; and the angle is increased on the basis of the existing liquid crystal molecules with a certain deflection angle so that a voltage of an applied external electric field canbe relatively reduced, which means that through using a parallel plate zoom liquid crystal lens, the voltage required to be applied when horizontal liquid crystal molecules rotate for the same degreeis greater than that required to be applied in the invention.

Description

technical field [0001] The invention relates to the field of liquid crystal lenses, in particular to a variable focal length liquid crystal lens with an arc-shaped columnar cavity structure and an arc-shaped columnar electrode laid along the arc-shaped columnar cavity. Background technique [0002] With the continuous development of science and technology and the continuous deepening of research, people's work research and many fields of daily life have more and higher requirements for lenses, especially focal length adjustable lenses. [0003] As we all know, the focal length of the traditional lens is single and fixed, so the traditional zoom system is composed of a plurality of single focal length lenses with different focal lengths, and mechanical focusing is required. Such a zoom system has many disadvantages, such as complex structure, cumbersome operation and high operation requirements, complicated production process and high cost, and what is even more unsatisfactor...

AI Technical Summary

Problems solved by technology

[0005] However, since some key technical problems of liquid crystal lenses have not been resolved, their further application is also limited.

Nowadays, many researchers have encountered and been improving the problems of excessive driving voltage of zoom liquid crystal lens, insufficient focusing range and insufficient response speed.

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