Zoom liquid crystal lens

A liquid crystal lens and liquid crystal layer technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of high operating voltage, increased thickness and cost, and insufficient adjustable focal length range, and achieve the effect of reducing thickness and manufacturing cost.

Inactive Publication Date: 2010-03-17
E PIN OPTICAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of electrodes with different configurations between the upper and lower layers of liquid crystal molecules, the electric field is different. Although a gradual refractive index can be formed, it also forms an edge attenuation phenomenon, resulting in poor imaging quality, or high operating voltage and poor focusing efficiency. High, focusing efficiency and polarization are dependent, and the range of adjustable focal length is not large enough, so there are still many limitations in use; and in order to solve the above problems, the existing technology often needs to be combined with other traditional lenses to form a composite lens , to compensate the zoom speed and imaging quality, but it also relatively increases the overall thickness and cost, and still cannot effectively solve the problem of zoom switching speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] refer to figure 2 , 3 As shown, it is the basic structure of an embodiment of a zoom liquid crystal lens composed of a single-layer liquid crystal lens unit in the present invention. The single-layer zoom liquid crystal lens 1 of this embodiment, counting from the side of the object, includes: one surface is provided with a surface alignment The glass substrate 10 of the electrode 20 (hereinafter referred to as the single-sided electrode glass substrate 10b), the spacer (spacer) 40, and the liquid crystal layer 30 and the single-sided electrode glass filled in the chamber formed by the single-sided electrode glass substrate 10b and the spacer 40 Substrate 10b; wherein, the spacer 40 can be a ring-shaped sheet or several stacked ones; wherein, a surface alignment electrode 20 is attached to the surface of the glass substrate 10, and the surface alignment electrode 20 is formed on the glass substrate 10 A metal film is coated, such as aluminum, silver, or gold, and the ...

no. 2 example

[0053] refer to Figure 9As shown, it is the basic structure of an embodiment of the double-layer zoom liquid crystal lens composed of double-layer liquid crystal lens units of the present invention. The double-layer zoom liquid crystal lens 2 of the present embodiment, counting from the object side, includes: a single-sided electrode glass substrate 10b, a spacer 40 and a first layer of liquid crystal layer 30, a double-sided electrode glass substrate 10a, a spacer 40 and a second layer The liquid crystal layer 30 and the single-sided electrode glass substrate 10b; wherein, between the single-sided electrode glass substrate 10b and the double-sided electrode glass substrate 10a, the thicknesses of the two liquid crystal layers 30 are respectively defined by the spacer 40 . When the incident light refracts for the first time through the first layer of liquid crystal layer 30 of the zoom liquid crystal lens 2, and then enters the second layer of liquid crystal layer 30 of the l...

no. 3 example

[0061] refer to Figure 10 As shown, it is the basic structure of the embodiment of the three-layer zoom liquid crystal lens 3 composed of three-layer liquid crystal lens units in the present invention. The three-layer zoom liquid crystal lens 3 of the present embodiment, counting from the side of the object, includes: a single-sided electrode glass substrate 10b, a spacer 40 and a first layer of liquid crystal layer 30, a double-sided electrode glass substrate 10a, a spacer 40 and a second layer Liquid crystal layer 30, double-sided electrode glass substrate 10a, spacer 40, third layer liquid crystal layer 30, and single-sided electrode glass substrate 10b; between the single-sided electrode glass substrate 10b and the double-sided electrode glass substrate 10a, with The spacers 40 respectively define the thicknesses of the three liquid crystal layers 30 . When the incident light passes through the first layer of liquid crystal layer 30 of the three-layer zoom liquid crystal...

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Abstract

The invention provides a zoom liquid crystal lens, which comprises a single-layer or multi-layer liquid crystal lens unit. The liquid crystal lens unit utilizes at least two pieces of glass substratesin a scheduled thickness; an aluminium film, a silver film or other translucent metal films are arranged on one side or double sides of each glass substrate respectively in an etching mode to form asurface alignment electrode which can be controlled independently; and then the glass substrates are arranged in parallel at intervals, so that a layer of accommodating space in a predetermined thickness is arranged between two adjacent glass substrates to seal liquid crystals so as to form a layer of liquid crystal lens unit. The arrangement direction and the optical properties such as the refractive index and the like of liquid crystal molecules in each liquid crystal lens unit are independently controlled by voltage so as to improve the imaging quality, accelerate zoom switching, improve the convenience of assembling the zoom liquid crystal lens and reduce the overall lens thickness and the manufacturing cost.

Description

technical field [0001] The invention relates to a liquid crystal lens, in particular to a zoom liquid crystal lens. Background technique [0002] Cameras, mobile phone cameras, or stereoscopic image processing devices often use zoom lenses to enlarge or reduce images to form images. A traditional zoom lens is provided with multiple lens groups. By moving the lens groups along the direction of the optical axis to change the distance between each other, the overall focal length is changed, but the imaging distance is not affected. However, this kind of lens requires a long moving distance of the mirror group, and the distance is nonlinear, so it is very difficult in structural design and control accuracy, and the cost is high and difficult to reduce. In addition, a liquid lens (liquid lens) or a liquid crystal lens (liquid crystal lens, LC lens for short) is used to improve the moving distance of the lens group and reduce the size of the camera. The principle of the liquid l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/29G02F1/1337
Inventor 林肇政
Owner E PIN OPTICAL IND
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