Liquid crystal element, deflection element, liquid crystal module, and electronic device
US-10095081-B2 · Oct 9, 2018 · US
Optical device, imaging device, focus driving method, and method for moving lens center
US11237451B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11237451-B2 |
| Application number | US-202016988648-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2020 |
| Priority date | Aug 9, 2019 |
| Publication date | Feb 1, 2022 |
| Grant date | Feb 1, 2022 |
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Abstract
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An optical device includes a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, and a second electrode layer being arranged in turn along a light transmission direction; wherein the first electrode layer comprises a first electrode, a second electrode, and a first impedance membrane arranged between the first electrode and the second electrode, and the first electrode and the second electrode are respectively arranged on opposite ends of the first impedance membrane; the second electrode layer has a structure similar to that of the first electrode layer. The four electrodes form a light transmission hole being shaped as a parallelogram. The present invention solves the problem that the focal length of the liquid crystal lens cannot be accurately adjusted due to the instability of the impedance of the impedance membrane of the present liquid crystal lens.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for moving a lens center of an optical device, wherein the optical device comprises a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, and a second electrode layer being arranged in turn along a light transmission direction; the first electrode layer comprises a first electrode, a second electrode, and a first impedance membrane arranged between the first electrode and the second electrode, and the first electrode and the electrode are respectively on opposite ends of the first impedance; the second electrode layer comprises a third electrode, a fourth electrode, and a second impedance membrane arranged between the third electrode and the fourth electrode, and the third electrode and the fourth electrode are respectively arranged on opposite ends of the second impedance membrane; the first electrode, the second electrode, the third electrode, and the fourth electrode form a light transmission hole being shaped as a parallelogram; and the method for moving a lens center of an optical device comprises: applying alternating voltages to the first electrode, the second electrode, the third electrode, and the fourth electrode, wherein the lens center of the optical is in a first position, and a coordinate of the lens center of the optical device is: ( 2 V 1 [ V 1 - V 2 cos ( φ 1 - φ 2 ) ] V 1 2 + V 2 2 - 2 V 1 V 2 cos ( φ 1 - φ 2 ) · L 1 2 , 2 V 3 [ V 3 - V 4 cos ( φ 3 - φ 4 ) ] V 3 2 + V 4 2 - 2 V 3 V
Assignees
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Classifications
Variable focal length devices · CPC title
Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title
- G02F1/29Primary
for the control of the position or the direction of light beams, i.e. deflection · CPC title
having a particular pattern · CPC title
- G02F1/134309Primary
characterised by their geometrical arrangement · CPC title
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- What does patent US11237451B2 cover?
- An optical device includes a first electrode layer, a first alignment layer, a liquid crystal layer, a second alignment layer, and a second electrode layer being arranged in turn along a light transmission direction; wherein the first electrode layer comprises a first electrode, a second electrode, and a first impedance membrane arranged between the first electrode and the second electrode, and…
- Who is the assignee on this patent?
- Univ Electronic Sci & Tech China
- What technology area does this patent fall under?
- Primary CPC classification G02F1/29. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 01 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).