Preparation method of plane lens

Abstract

The present invention discloses a preparation method of a plane lens. The method comprises: employing high refraction index nanofluid materials to dropwise add onto loose and porous monolithic gel body materials with low refraction index and high damage threshold, and allowing the refraction index of the monolithic gel body materials to be gradually changed (diffusing from middle portion to transverse direction and vertical direction or diffusing from an edge layer) after the nanofluid materials are permeated through diffusion of the nanofluid materials in the monolithic gel body materials and through adoption of the nanofluid material physical property and the monolithic gel body material porous structure to prepare a plane lens. The preparation method of the plane lens is simple in process, and can control forming of the refraction index of the lens through selection of the nanofluid materials and the monolithic gel body materials, the formed lens has higher transmittance than a lens based on glass materials, a lens with a continuously and gradually changed refraction index prepared by the method can omit the tedious preparation process of a traditional glass-based lens and does not need processes such as grinding, polishing and the like so as to save the production cost, and is an ideal lens with a continuously and gradually changed refraction index.

Description

technical field

[0001] The invention relates to a preparation method of a plane lens, in particular to a method of dropping a high refractive index nanofluid material solution onto a gel block material, and through the diffusion of the nanofluid material in the gel block material, using physical characteristics and pore structure, and a method for preparing a planar lens by making the refractive index of the gel block material infiltrated by the nanofluid material continuously and gradually change. Background technique

[0002] Gradient refractive index lens refers to an optical lens whose internal refractive index changes continuously along a certain direction. There are three types of gradient refractive index distribution: radial gradient refractive index, axial gradient refractive index, and spherical gradient refractive index. Radial gradient index lenses are the most widely used and most concerned, in which the refractive index decreases continuously along the radial d...

Examples

Embodiment 1

[0029] A method for preparing a planar lens, comprising the following process: adding 1 mL of a nanofluid material solution with a mass concentration of 0.1% dropwise to a surface area of ​​1 mm in thickness and receiving a nanofluid material of 1 cm 2 On the gel block material, the refractive index of the gel block material permeated by the nano fluid material is gradually changed through the diffusion of the nano fluid material in the gel block material, and a flat lens is formed after drying.

Embodiment 2

[0031] A preparation method of a plane lens, comprising the following process: adding 10 mL of a nanofluid material solution with a mass concentration of 1% to a thickness of 5 mm and a surface area of ​​10 cm for receiving the nanofluid material 2 On the gel block material, the refractive index of the gel block material permeated by the nano fluid material is gradually changed through the diffusion of the nano fluid material in the gel block material, and a flat lens is formed after drying.

Embodiment 3

[0033] A preparation method of a planar lens, comprising the following process: adding 100mL of a crystalline Si nanoparticle solution with a mass concentration of 5% to a surface area of ​​10mm in thickness and receiving a nanofluid material of 100cm 2 On the porous silica gel block, through the diffusion of crystalline Si nanoparticles in the porous silica gel block, the refractive index of the porous silica gel block material after the crystalline Si nanoparticle infiltration is gradually changed, and dried Finally, a plane lens is formed; the pore diameter of the porous silica gel block is 20 nm.

technical field

[0001] The invention relates to a preparation method of a plane lens, in particular to a method of dropping a high refractive index nanofluid material solution onto a gel block material, and through the diffusion of the nanofluid material in the gel block material, using physical characteristics and pore structure, and a method for preparing a planar lens by making the refractive index of the gel block material infiltrated by the nanofluid material continuously and gradually change. Background technique

[0002] Gradient refractive index lens refers to an optical lens whose internal refractive index changes continuously along a certain direction. There are three types of gradient refractive index distribution: radial gradient refractive index, axial gradient refractive index, and spherical gradient refractive index. Radial gradient index lenses are the most widely used and most concerned, in which the refractive index decreases continuously along the radial d...

Examples

Embodiment 1

[0029] A method for preparing a planar lens, comprising the following process: adding 1 mL of a nanofluid material solution with a mass concentration of 0.1% dropwise to a surface area of ​​1 mm in thickness and receiving a nanofluid material of 1 cm 2 On the gel block material, the refractive index of the gel block material permeated by the nano fluid material is gradually changed through the diffusion of the nano fluid material in the gel block material, and a flat lens is formed after drying.

Embodiment 2

[0031] A preparation method of a plane lens, comprising the following process: adding 10 mL of a nanofluid material solution with a mass concentration of 1% to a thickness of 5 mm and a surface area of ​​10 cm for receiving the nanofluid material 2 On the gel block material, the refractive index of the gel block material permeated by the nano fluid material is gradually changed through the diffusion of the nano fluid material in the gel block material, and a flat lens is formed after drying.

Embodiment 3

[0033] A preparation method of a planar lens, comprising the following process: adding 100mL of a crystalline Si nanoparticle solution with a mass concentration of 5% to a surface area of ​​10mm in thickness and receiving a nanofluid material of 100cm 2 On the porous silica gel block, through the diffusion of crystalline Si nanoparticles in the porous silica gel block, the refractive index of the porous silica gel block material after the crystalline Si nanoparticle infiltration is gradually changed, and dried Finally, a plane lens is formed; the pore diameter of the porous silica gel block is 20 nm.

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