A kind of zooming method of zoom glasses based on liquid crystal lens

A liquid crystal lens and glasses technology, which is applied in the field of zooming, can solve the problems of unsightly appearance, distance between bifocal lenses, and prism jumping, etc., and achieve the effects of avoiding excessive correction, beautiful appearance, and improving optical performance

Active Publication Date: 2019-04-19
PUTIAN CITY ZHUHUO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aim is to realize automatic adjustment of the two focal lengths of spectacle lenses, to solve the problems of obvious intervals between different areas of bifocal lenses in the prior art, the appearance is not beautiful, and the phenomenon of prism jumping, etc., and to realize an automatic zooming method for glasses

Method used

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  • A kind of zooming method of zoom glasses based on liquid crystal lens
  • A kind of zooming method of zoom glasses based on liquid crystal lens
  • A kind of zooming method of zoom glasses based on liquid crystal lens

Examples

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Effect test

example 1

[0062] Example 1, such as Figure 7 As shown, the user needs to be equipped with myopia glasses with a normal diopter of 200 degrees and a second diopter of 150 degrees, that is, the first diopter is -2D, the second diopter is -1.5D, and the double diopter difference is -0.5D. In the figure, from bottom to top are the first lens substrate 101 , the liquid crystal layer 104 , and the second lens substrate 107 . Wherein, the lower surface of the first lens substrate 101 also uses polishing to fine-tune the lens diopter, and the radius of curvature of the upper and lower interfaces of the second lens substrate 107 is the same, and the diopter is 0.

[0063] The optical structure of the liquid crystal layer 104 is in the form of a concave-convex mirror, α=-1, and β=1; after the liquid crystal material is selected, the birefringence of the liquid crystal and the difference between the birefringence of the liquid crystal are determined, assuming that the first refractive index of ...

example 2

[0068] Example 2, such as Figure 8 As shown, the user needs to be equipped with reading glasses with a normal diopter of 100 degrees and a second diopter of 50 degrees, that is, the first diopter is +1D, the second diopter is +0.5D, and the double diopter difference is 0.5D. In the figure, from bottom to top are the first lens substrate 101 , the liquid crystal layer 104 , and the second lens substrate 107 . Wherein, the lower surface of the first lens substrate 101 also uses polishing to fine-tune the lens diopter, and the radius of curvature of the upper and lower interfaces of the second lens substrate 107 is the same, and the diopter is 0.

[0069] The optical structure of liquid crystal layer 104 selects the double-convex mirror form for use, α=1, β=1; Adopt because after the liquid crystal material is selected, the birefringence of liquid crystal and the difference of birefringence have just determined, suppose, the first refraction of liquid crystal The index is 1.8...

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Abstract

The invention discloses a zooming method of zooming glasses based on liquid crystal lens, and relates to the field of glasses. A pair of double-diopter glasses comprises a glasses body, double-diopterlenses, a driving module, a distance measuring module and a main controller. The zooming method comprises the following steps: firstly, the distance measuring module collects distance measuring dataof a watched object in real time, and sends the distance measuring data to the main controller; then, the distance measuring data is compared with a distance measuring threshold value; lens driving voltage is generated; lens diopter is controlled. The voltage is applied to an electrode; liquid crystals are controlled to rotate; a refractive index is switched; the goal of controlling the lens diopter is achieved. The lenses of the glasses provided by the invention achieve the effects of no interval in different regions, and attractive appearance, and the problems of prism jumping phenomenon andthe like do not exist. Through the distance measuring module, the watched scenery is subjected to distance measurement; the switching of the lens diopter is controlled; the operation by a user is notneeded; the use convenience and speed are respectively improved and accelerated.

Description

technical field [0001] The invention relates to the field of glasses, in particular to a zooming method of zoom glasses based on a liquid crystal lens. Background technique [0002] In the case of vision correction, it is often necessary to have two corrections in one pair of glasses. For example, when old people or presbyopic users read newspapers, they need to use presbyopic glasses (convex lenses) to watch them, and when looking at distant objects, they need to use flat mirrors to watch them. For another example, in adolescents with pseudomyopia, glasses with two degrees are also needed to avoid deepening myopia and correct vision. Users can adjust the degree of glasses by themselves to meet the needs of different scenarios. [0003] In the prior art, there is a bifocal lens (or bifocal lens), which grinds two different refractive powers on the same lens to become a lens in two regions, such as figure 2 shown. Its disadvantages are: it divides one lens into two areas, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/08G02F1/29
CPCG02C7/085G02F1/29G02F1/294
Inventor 李梅英
Owner PUTIAN CITY ZHUHUO INFORMATION TECH CO LTD
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