CN213878437U

CN213878437U - Luneberg lens with conical hole structure

Info

Publication number: CN213878437U
Application number: CN202022923463.9U
Authority: CN
Inventors: 郑洪振; 芦永超; 孙耀志
Original assignee: Guangdong Fushun Tianji Communication Co Ltd
Current assignee: Guangdong Fushun Tianji Communication Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-03
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to a luneberg lens with a conical hole structure, which comprises a sphere, wherein a plurality of conical holes are uniformly distributed on the surface of the sphere, the conical holes are blind holes, the conical tips of the conical holes are directed to the sphere center of the sphere, and 25 to 60 conical holes are distributed in the circumference of the sphere; the sphere is made of a material having a dielectric constant of 2. The luneberg lens with the conical hole structure has the characteristics of simple structure, reasonable design, high production efficiency, realization of standardized production and the like.

Description

Luneberg lens with conical hole structure

Technical Field

The utility model relates to a luneberg lens technical field, especially a take luneberg lens of taper hole structure, the utility model discloses still relate to a luneberg lens's production method.

Background

The luneberg lens technology, proposed by RKLuneberg in 1944 based on geometric optics, is used as an antenna and a scattering body, mainly for fast scanning systems, satellite communication systems, automotive anti-collision radars, radar reflectors.

Theoretically, the dielectric constant of the dielectric material for the luneberg lens should be continuously varied from 2 to 1 from the center to the outer diameter following a certain mathematical law. However, no ideal medium exists in nature, so that discrete spherical shells with layered design are often used in actual design instead.

At present, most of commercially available luneberg lenses are composed of a plurality of dielectric constant layers wrapped layer by layer, each dielectric constant layer is composed of a plurality of fine particles with metal fibers which are adhered together through viscose, when the dielectric constant layers are formed, the directions of the metal fibers in the particles cannot be kept consistent, so that the metal fibers on 2 adjacent particles in the luneberg lenses after production are easy to contact and conduct, thus the dielectric constant of the luneberg lenses is influenced, the whole luneberg lenses are designed by adhering the particles with the metal fibers through adhesives, the production process is complicated, and the density of the metal fibers in each dielectric layer is difficult to guarantee, so that standardized products are difficult to produce.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take long bo lens of taper pore structure, this long bo lens have simple structure, reasonable in design, production efficiency height, can realize advantages such as standardized production.

The technical scheme of the luneberg lens with the conical hole structure is realized as follows: a luneberg lens with a conical hole structure comprises a sphere and is characterized in that a plurality of conical holes are uniformly distributed on the surface of the sphere, the conical holes are blind holes, the conical tips of the conical holes point to the sphere center of the sphere, and 25-60 conical holes are distributed in the circumference of the sphere; the sphere is made of a material having a dielectric constant of 2.

Further, the sphere is formed by splicing and bonding a plurality of assembling pieces.

Further, the sphere has a radius R, and the height of the tapered holes is in the range of 0.7 to 0.95R.

Furthermore, the radius of the sphere is R, and R is in the range of 10 mm-200 mm.

Further, the diameter of the bottom surface of the tapered hole is in the range of 1mm to 25 mm.

Further, the ball body is made of ABS plastic.

This take luneberg lens of taper hole structure's beneficial effect: the luneberg lens with the conical hole structure is characterized in that a plurality of conical holes are uniformly distributed on the surface of the sphere, the conical tips of the conical holes point to the center of the sphere, the sphere is made of a material with a dielectric constant of 2, and the conical holes point to the center of the sphere but do not penetrate through the center of the sphere, so that the center of the sphere is a solid structure without air, and the dielectric constant of the center of the sphere can be regarded as 2; the cone tip of the cone-shaped hole is designed to point to the sphere center of the sphere, so that the aperture of the cone-shaped hole is gradually enlarged from the sphere center of the sphere to the surface of the sphere, this means that the proportion of air per unit volume closer to the outer surface of the sphere to the material in this unit volume is greater, the greater the proportion of air per unit volume, the smaller the dielectric constant in the unit volume is, the more the dielectric constant of the tapered hole structure luneberg lens continuously changes from the center of the sphere to the outer diameter of the tapered hole structure luneberg lens from 2 to 1 according to a certain mathematical rule.

The utility model also provides a production method of luneberg lens, this production method of luneberg lens have that production process is simple, production efficiency is high and can realize advantages such as standardized production.

The technical scheme of the production method of the luneberg lens is realized as follows: a production method of a Luneberg lens is characterized by comprising the following production steps:

1) modeling a sphere model of the luneberg lens with the conical hole structure in the previous scheme by adopting software;

2) in software, a plurality of parallel surfaces are adopted to divide a spherical model into a plurality of assembled part models;

3) manufacturing corresponding moulds for all the assembled part models obtained in the step 2);

4) injecting materials with the dielectric constant of 2 into all the moulds obtained in the step 3) in an injection molding mode so that the moulds produce the assembled parts with corresponding structures;

5) bonding and splicing the spliced parts obtained in the step 4) by adopting viscose glue to form the sphere of the luneberg lens with the conical hole structure in the previous scheme.

Further, the material with the dielectric constant of 2 adopted in the step 4) is ABS plastic.

The production method of the luneberg lens has the beneficial effects that: the production method of the luneberg lens can realize standard and rapid production by producing the assembled piece firstly and then bonding the assembled piece into a sphere by viscose glue, and the production method of the luneberg lens does not need to use particles with metal fibers to stick the dielectric constant layers layer by layer, and the hole body forming the conical hole by assembling on the thinner assembled piece is very convenient to demould, so that the production method of the luneberg lens has the advantages of simple production process, high production efficiency, realization of standardized production and the like.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1.

Fig. 2 is a schematic front view of the structure of embodiment 1.

Fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.

Description of reference numerals: 1-sphere; 2-tapered pores; and 3, assembling.

Detailed Description

Example 1

As shown in fig. 1, 2, and 3, the present embodiment is a luneberg lens with a tapered hole structure, including a sphere 1, wherein a plurality of tapered holes 2 are uniformly distributed on the surface of the sphere 1, the tapered holes 2 are blind holes, the tapered tips of the tapered holes 2 are directed to the center of the sphere 1, 25 to 60 tapered holes 2 are distributed in a circumference of the sphere 1, and in the present embodiment, 36 tapered holes 2 are specifically distributed in a circumference of the sphere 1; the sphere 1 is made of a material with a dielectric constant of 2, the existing ABS plastic has a dielectric constant of 2, and the sphere 1 is made of the ABS plastic. The luneberg lens with the conical hole structure is characterized in that a plurality of conical holes 2 are uniformly distributed on the surface of a sphere 1, the conical tips of the conical holes 2 point to the center of the sphere 1, the sphere 1 is made of a material with a dielectric constant of 2, and the conical holes 2 point to the center of the sphere but do not penetrate through the center of the sphere, which indicates that the center of the sphere 1 is a solid structure without air, and the dielectric constant of the center of the sphere 1 can be regarded as 2; the conical tip of the conical hole 2 is designed to be directed to the center of the sphere 1, so that the aperture of the conical hole 2 is gradually enlarged from the center of the sphere 1 to the surface of the sphere, this means that the proportion of air per unit volume closer to the outer surface of the sphere 1 to the material in this unit volume is greater, the greater the proportion of air per unit volume, the smaller the dielectric constant in the unit volume, the more the dielectric constant of the tapered hole structure luneberg lens continuously changes from the center of the sphere to the outer diameter from 2 to 1 according to a certain mathematical rule, and the tapered hole structure luneberg lens does not need to use particles with metal fibers, and only needs to form the tapered hole 2 on the sphere 1, so that the tapered hole structure luneberg lens has the advantages of simple structure, reasonable design, high production efficiency, realization of standardized production and the like.

In order to facilitate the fabrication of the luneberg lens with a large radius and a conical hole structure, as shown in fig. 1, 2, and 3, the sphere 1 is formed by splicing and bonding a plurality of pieces 3. The whole body of the assembling piece 3 is of a plate-shaped structure, the assembling piece is produced by adopting a mold in an injection molding mode, a hole body used for forming the conical hole 2 is formed in the assembling piece 3, and the mode of reassembling in the slicing production is more favorable for demolding when the thinner assembling piece 3 is formed into the hole body used for splicing and forming the conical hole 2.

In order to make the structure of the luneberg lens with the tapered hole structure more reasonable, as shown in fig. 1, fig. 2 and fig. 3, the radius of the sphere 1 is R, and the height of the tapered hole 2 is in the range of 0.7 × R to 0.95 × R; the radius of the sphere 1 is R, R is in the range of 10 mm-200 mm, and the radius R of the sphere 1 in the embodiment is specifically 15 mm; the diameter of the bottom surface of the conical hole 2 is in the range of 1mm to 25mm, the diameter of the bottom surface of the conical hole 2 in the present embodiment is specifically 2mm, and the diameter of the bottom surface of the conical hole 2 is also the opening on the surface of the sphere 1.

Example 2

The embodiment is a production method of a luneberg lens, comprising the following production steps:

1) modeling a sphere model of the luneberg lens with the tapered hole structure in example 1 by using software;

5) and (3) bonding and assembling the assembled parts obtained in the step 4) by using viscose glue to form the sphere of the luneberg lens with the conical hole structure, which is described in the embodiment 1.

The production method of the luneberg lens can realize standard and rapid production by producing the assembled piece firstly and then bonding the assembled piece into a sphere by viscose glue, and the production method of the luneberg lens does not need to use particles with metal fibers to stick the dielectric constant layers layer by layer, and the hole body forming the conical hole by assembling on the thinner assembled piece is very convenient to demould, so that the production method of the luneberg lens has the advantages of simple production process, high production efficiency, realization of standardized production and the like.

Claims

1. The utility model provides a take luneberg lens of toper pore structure, includes the spheroid, its characterized in that: the surface of the sphere is uniformly provided with a plurality of conical holes, the conical holes are blind holes, the conical tips of the conical holes point to the sphere center of the sphere, and 25-60 conical holes are distributed in the circumference of the sphere; the sphere is made of a material having a dielectric constant of 2.

2. A luneberg lens with a tapered aperture structure as claimed in claim 1, wherein: the sphere is formed by splicing and bonding a plurality of assembling pieces.

3. A luneberg lens with a tapered aperture structure as claimed in claim 1, wherein: the spheres have a radius R and the height of the conical pores is in the range of 0.7 to 0.95R.

4. A luneberg lens with a tapered aperture structure as claimed in claim 1, wherein: the radius of the sphere is R, and R is within the range of 10 mm-200 mm.

5. A luneberg lens with a tapered aperture structure as claimed in claim 1, wherein: the diameter of the bottom surface of the tapered hole is in the range of 1mm to 25 mm.

6. A luneberg lens with a tapered hole structure as claimed in claim 1 or 2, wherein: the ball body is made of ABS plastic.