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Liquid crystal conical lens, driving method thereof and imaging device based on liquid crystal conical lens

A technology of conical lens and liquid crystal, applied in the field of conical lens, can solve the problems of complex structure of liquid crystal conical lens, and achieve the effect of simple structure and convenient adjustment

Pending Publication Date: 2022-02-01
成都微晶景泰科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a liquid crystal axicon, its driving method and an imaging device based on the liquid crystal axicon, to solve the problem of complex structure of the liquid crystal axicon in the prior art

Method used

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  • Liquid crystal conical lens, driving method thereof and imaging device based on liquid crystal conical lens
  • Liquid crystal conical lens, driving method thereof and imaging device based on liquid crystal conical lens
  • Liquid crystal conical lens, driving method thereof and imaging device based on liquid crystal conical lens

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Embodiment 1

[0038] Such as figure 1 As shown, the present embodiment provides a liquid crystal axicon, which includes a circular transparent electrode 11, a circular hole electrode 12, a first transparent substrate 21, a liquid crystal layer 30, a first transparent electrode 13 and a second transparent electrode 12 arranged in sequence. Transparent substrate 22, the circular transparent electrode 11 and the circular hole electrode 12 are located on the side of the first transparent substrate 21 facing away from the liquid crystal layer 30, the center of the circular transparent electrode 11 and the circular hole electrode 12 The projections of the centers of the circular holes on the same reference plane coincide, and the reference plane is a plane perpendicular to the central axis of the circular hole electrode 12 .

[0039]The circular transparent electrode 11 can be in the shape of a small disc, and the electrode can be a circular ITO electrode, IZO electrode, FTO electrode, AZO electr...

Embodiment 2

[0047] Such as image 3 As shown, the present embodiment provides another liquid crystal axicon, which includes a circular transparent electrode 11, a circular hole electrode 12, and a first transparent substrate 21, a liquid crystal layer 30, and a first transparent electrode arranged in sequence. 13 and a second transparent substrate 22, the circular transparent electrode 11 and the circular hole electrode 12 are located on the side of the first transparent substrate 21 facing away from the liquid crystal layer 30, the center of the circular transparent electrode 11 and The projections of the center of the circular hole of the circular hole electrode 12 on the same reference plane coincide, and the reference plane is a plane perpendicular to the central axis of the circular hole of the circular hole electrode 12 . The liquid crystal axicon also includes a third transparent substrate 23, the third transparent substrate 23 is located on the side of the hole electrode 12 facing...

Embodiment 3

[0057] Such as Figure 5 As shown, the present embodiment provides another liquid crystal axicon, which includes a circular transparent electrode 11, a circular hole electrode 12, and a first transparent substrate 21, a liquid crystal layer 30, and a first transparent electrode arranged in sequence. 13 and a second transparent substrate 22, the circular transparent electrode 11 and the circular hole electrode 12 are located on the side of the first transparent substrate 21 facing away from the liquid crystal layer 30, the center of the circular transparent electrode 11 and The projections of the center of the circular hole of the circular hole electrode 12 on the same reference plane coincide, and the reference plane is a plane perpendicular to the central axis of the circular hole of the circular hole electrode 12 . In order to apply the second driving voltage to the circular electrodes, in this embodiment, the liquid crystal axicon further includes an electrode lead-out line...

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Abstract

The invention belongs to the technical field of conical lenses, and particularly relates to a liquid crystal conical lens, a driving method thereof and an imaging device based on the liquid crystal conical lens. The liquid crystal conical lens comprises a circular transparent electrode, a circular hole electrode, and a first transparent substrate, a liquid crystal layer, a first transparent electrode and a second transparent substrate which are sequentially arranged, wherein the circular transparent electrode and the circular hole electrode are located on the side, back on to the liquid crystal layer, of the first transparent substrate, the projection of the center of the circular transparent electrode and the projection of the center of a circular hole of the circular hole electrode on the same reference plane coincide, and the reference plane is a plane perpendicular to the central axis of the circular hole of the circular hole electrode. The liquid crystal conical lens is simple in structure and convenient to manufacture.

Description

technical field [0001] The invention belongs to the technical field of axicon, and in particular relates to a liquid crystal axicon, a driving method thereof, and an imaging device based on the liquid crystal axicon. Background technique [0002] The non-diffracting Bessel (Beasel) beam has a small central main spot size, a long collimation distance without divergence, and has the unique advantages of beam reconstruction through obstacles. In recent years, axicons have attracted much attention due to their favorable Bessel beam properties. For traditional axicons, the spot size of the Bessel beam generated by it is fixed. If the size of the Bessel beam generated is to be changed, the system components need to be replaced, so its application adaptability is low. Meanwhile, some active optical devices, such as spatial light modulators (SLMs) and tunable acoustic gradient lenses, can generate Bessel beams with variable spot parameters. However, SLM is expensive, and the desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/29G02F1/1343G02F1/133
CPCG02F1/29G02F1/134309G02F1/13306
Inventor 刘志强王滨
Owner 成都微晶景泰科技有限公司
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