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Zoom control method and device, storage medium and zoom system

A technology of control method and control device, which is applied in nonlinear optics, instruments, optics, etc., can solve problems affecting imaging capabilities and achieve good imaging effects

Inactive Publication Date: 2021-05-07
NANCHANG VIRTUAL REALITY RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the object of the present invention is to provide a zoom control method, device, storage medium and zoom system to solve the technical problem that the zoom control method of the existing liquid crystal lens will affect the imaging capability

Method used

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  • Zoom control method and device, storage medium and zoom system
  • Zoom control method and device, storage medium and zoom system
  • Zoom control method and device, storage medium and zoom system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] see Image 6 , shows the zoom control method in the first embodiment of the present invention, which is applied to the zoom control device, and the zoom control device is used for zoom control of the liquid crystal lens, and the liquid crystal lens includes several central electrodes and several edge electrodes, so The center electrode is located in the central area of ​​the liquid crystal lens, and the edge electrodes are located in the edge area of ​​the liquid crystal lens. The method specifically includes steps S01-S02.

[0064] Step S01, receiving a zoom signal.

[0065] Wherein, the zoom signal includes a target focal length, and the target focal length is a required focal length after zooming. When the target focal length is greater than the set focal length, it is determined that the focal length of the liquid crystal lens needs to be increased; when the target focal length is less than the set focal length, it is determined that the focal length of the liquid ...

Embodiment 2

[0080] see Figure 12 , shows the zoom control method in the second embodiment of the present invention, which is used for zoom control of the liquid crystal lens, the liquid crystal lens includes several central electrodes and several edge electrodes, and the central electrode is located in the central area of ​​the liquid crystal lens , the edge electrode is located in the edge area of ​​the liquid crystal lens, and the method specifically includes step S11-step S14.

[0081] Step S11, receiving a zoom signal;

[0082] Step S12, acquiring a target focal length in the zoom signal, and the target focal length is a desired focal length after zooming.

[0083] Step S13 , obtaining the driving voltage corresponding to the target focal length from the preset focal length and voltage mapping table to obtain the target driving voltage.

[0084] Step S14 , adjusting the voltage difference between the edge electrodes and the common electrode to the target driving voltage, and contro...

Embodiment 3

[0092] Another aspect of the present invention also provides a zoom control device, please refer to Figure 15 , shows the zoom control device in the third embodiment of the present invention, which is used for zoom control of the liquid crystal lens, the liquid crystal lens includes several central electrodes and several edge electrodes, and the central electrode is located in the central area of ​​the liquid crystal lens , the edge electrode is located in the edge area of ​​the liquid crystal lens, and the zoom control device specifically includes:

[0093] A signal receiving module, configured to receive a zoom signal;

[0094] A zoom control module, configured to adjust the voltage difference between the edge electrodes and the common electrode according to the zoom signal, and control the voltage difference between the center electrode and the common electrode to remain constant, in response to the zoom signal.

[0095] Further, in some optional embodiments of the presen...

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Abstract

The invention provides a zoom control method and device, a storage medium and a zoom system. The method comprises the following steps: receiving a zoom signal; and adjusting the voltage difference between an edge electrode and a common electrode according to the zoom signal, and controlling the voltage difference between a central electrode and the common electrode to be kept unchanged so as to respond to the zoom signal. The purpose of adjusting the focal length of the liquid crystal lens by adjusting the curvature radius of the liquid crystal lens is also achieved by controlling the pressure difference between the central electrode and the common electrode to be kept unchanged and adjusting the pressure difference between the edge electrode and the common electrode; meanwhile, the zoom control mode can ensure that an optical path difference distribution curve of the liquid crystal lens can be well matched with a standard curve under any focal length, the phenomenon that the imaging capacity is gradually worsened along with increase of the focal length does not exist, a better imaging effect is achieved, and the focal length can be continuously adjusted within a larger range.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a zoom control method, device, storage medium and zoom system. Background technique [0002] At present, the near-eye display device that forms a stereoscopic vision based on the left and right eyes receiving two slightly different images, because the human eye lens adjusts its convexity to make the object clearly imaged on the retina, the focusing distance Convergence distances are not exactly equal, resulting in conflicts in the adjustment of visual vergence, which often cause discomfort such as dizziness for users. [0003] In order to solve the above problems, a variable-focus liquid crystal lens is usually arranged in the near-eye display device, so as to alleviate the conflict of visual vergence adjustment through the variable-focus liquid crystal lens technology, thereby improving user discomfort such as dizziness. Usually, in order to improve focusing or imaging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/29G02F1/1343
CPCG02F1/134309G02F1/29
Inventor 向贤明李建军
Owner NANCHANG VIRTUAL REALITY RES INST CO LTD