JPH04185105A - Lens antenna - Google Patents
Lens antennaInfo
- Publication number
- JPH04185105A JPH04185105A JP2316372A JP31637290A JPH04185105A JP H04185105 A JPH04185105 A JP H04185105A JP 2316372 A JP2316372 A JP 2316372A JP 31637290 A JP31637290 A JP 31637290A JP H04185105 A JPH04185105 A JP H04185105A
- Authority
- JP
- Japan
- Prior art keywords
- matching layer
- lens
- main body
- lens main
- lens body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、レンズアンテナに関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a lens antenna.
〈従来の技術〉
従来から、衛星放送を受信するに際しては、第３図で示
すような構成を有するレンズアンテナが用いられている
。すなわち、このレンズアンテナは、いわゆる凸レンズ
形状として成形されたレンズ本体１０と、その表面を全
面的に覆って電波の表面反射を防止する整合層１１とを
備えており、レンズ本体１０は誘電体材料を含む樹脂材
料、また、整合層１１は所要の樹脂材料によって形成さ
れている。そして、これらのレンズ本体１０と整合層１
１とは、これらの界面に塗布されたエポキシ系の接着剤
１２などによって互いに接合されている。<Prior Art> Conventionally, when receiving satellite broadcasting, a lens antenna having a configuration as shown in FIG. 3 has been used. That is, this lens antenna includes a lens body 10 formed into a so-called convex lens shape, and a matching layer 11 that completely covers the surface of the lens body to prevent surface reflection of radio waves.The lens body 10 is made of a dielectric material. The matching layer 11 is formed of a desired resin material. Then, these lens bodies 10 and matching layer 1
1 and 2 are bonded to each other by an epoxy adhesive 12 or the like applied to these interfaces.
〈発明が解決しようとする課題〉
ところで、前記従来構成のレンズアンテナにおいては、
そのレンズ本体１０と整合層１１との間に誘電率の異な
る接着剤１２が介在しているため、電波損失が増えてレ
ンズアンテナの利得が低下することになり、特性劣化を
招いてしまうという不都合が生じていた。また、レンズ
本体１０及び整合層１１それぞれの有する線膨張係数が
互いに異なることから、使用時に直射日光の照射などを
繰り返して受ける（ヒートサイクル）と、両者の剥離が
起こることもあうた。<Problem to be solved by the invention> By the way, in the lens antenna of the conventional configuration,
Since the adhesive 12 with a different dielectric constant is interposed between the lens body 10 and the matching layer 11, radio wave loss increases and the gain of the lens antenna decreases, resulting in characteristic deterioration. was occurring. Further, since the linear expansion coefficients of the lens body 10 and the matching layer 11 are different from each other, peeling of the two may occur if the lens body 10 and the matching layer 11 are repeatedly exposed to direct sunlight during use (heat cycle).
本発明はかかる現状に鑑みて創案されたものであって、
利得の低下を招くことなく、レンズ本体と整合層との密
着性を高めて両者の剥離を有効に防止することができる
レンズアンテナを提供することを目的としている。The present invention was created in view of the current situation, and
It is an object of the present invention to provide a lens antenna that can enhance the adhesion between a lens body and a matching layer and effectively prevent separation of the two without causing a decrease in gain.
〈課題を解決するための手段〉
本発明に係るレンズアンテナは、このような目的を達成
するために、レンズ本体と、その一方の表面を被覆する
第１の整合層と、その他方の表面を被覆する第２の整合
層とを備えており、第１の整合層の端縁部はレンズ本体
の周縁部で折り返されて他方の表面にまで掛かっており
、かつ、第２の整合層の端縁部は第１の整合層の端縁部
を被覆して折り返されていることを特徴とするものであ
る。<Means for Solving the Problems> In order to achieve such an object, the lens antenna according to the present invention includes a lens body, a first matching layer covering one surface of the lens body, and a first matching layer covering the other surface of the lens body. The edge of the first matching layer is folded back at the peripheral edge of the lens body and extends to the other surface, and the edge of the second matching layer The edge portion is characterized in that it is folded back to cover the edge portion of the first matching layer.
〈実施例〉 以下、本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
第１図はレンズアンテナの概略構成を示す縦断面図であ
り、第２図はこのレンズアンテナにおける整合層の形成
手順を示す説明図である。そしてこの図における符号１
はレンズ本体であり、２゜３のそれぞれは第１及び第２
の整合層である。FIG. 1 is a vertical cross-sectional view showing a schematic configuration of a lens antenna, and FIG. 2 is an explanatory diagram showing a procedure for forming a matching layer in this lens antenna. And code 1 in this figure
is the lens body, and each of 2°3 is the first and second
This is a matching layer.
本実施例に係るレンズアンテナは、誘電体材料を含む樹
脂材料、例えば、ポリオレフィン系樹脂であるポリプロ
ピレンとｍ７４体セラミックとからなる複合材料を凸レ
ンズ形状に成形してなるレンズ本体１を備えている。そ
して、このレンズ本体１の一方の表面は所要の樹脂材料
をモールドしてなる第１の整合１ｉ１２によって被覆さ
れる一方、その他方の表面は同しく所要の樹脂材料をモ
ールドしてなる第２の整合層３によって被覆されている
。The lens antenna according to this embodiment includes a lens body 1 formed by molding a resin material containing a dielectric material, for example, a composite material made of polypropylene, which is a polyolefin resin, and M74 ceramic into a convex lens shape. One surface of this lens body 1 is covered with a first alignment layer 1i12 molded with a desired resin material, while the other surface is covered with a second matching layer 1i12 formed with a molded resin material. It is covered by a matching layer 3.
また、このとき、第１の整合層２の端縁部２ａはレンズ
本体１の周縁部１ａで折り返されて他方の表面にまで掛
かるようにされる一方、第２の整合層３の端縁部３ａは
折り返された第１の整合Ｎ２の端縁部２ａをさらに被覆
したうえで折り返されている。なお、ここで、整合層２
．３を同一材料によって形成すれば、両者の密着力が向
上することはいうまでもない。Also, at this time, the edge 2a of the first matching layer 2 is folded back at the peripheral edge 1a of the lens body 1 so as to extend over the other surface, while the edge 2a of the second matching layer 3 3a further covers the end edge portion 2a of the folded first alignment N2 and is then folded back. Note that here, the matching layer 2
．． It goes without saying that if both parts 3 are made of the same material, the adhesion between them will be improved.
ところで、このレンズ本体ｌの表面Ｐに整合層２を形成
する際の手順として二よ、第２図で示すように、モール
ド金型５内二こ収納されたレンズ本体１の整合層２を形
成すべき表面をコアビン６によって支持しておき、この
モールＦ金型５内に注入されて整合層２となる樹脂材料
が固化するに従ってコアビン６を引き抜く方法が実用的
である。なお、整合層３も同様にして形成されるのであ
るが、これらの整合層２，３を形成する際に他の手順を
採用してもよいことはいうまでもない。By the way, as a procedure for forming the matching layer 2 on the surface P of the lens body 1, as shown in FIG. A practical method is to support the surface to be formed by the core bin 6, and then pull out the core bin 6 as the resin material injected into the mold F mold 5 and forming the matching layer 2 solidifies. Although the matching layer 3 is formed in the same manner, it goes without saying that other procedures may be adopted when forming the matching layers 2 and 3.
さらに、本実施例では、レンズ本体１の両表面を整合層
２．３によって被覆するとしているが、これに限定され
るものではなく、必要によってはレンズ本体１の一方の
表面のみを整合層２で被覆することによってレンズアン
テナとすることも可能である。Further, in this embodiment, both surfaces of the lens body 1 are covered with the matching layer 2.3, but the invention is not limited to this, and if necessary, only one surface of the lens body 1 is covered with the matching layer 2.3. It is also possible to use it as a lens antenna by covering it with.
〈発明の効果〉
以上説明したように、本発明に係るレンズアンテナにお
いては、レンズ本体の表面それぞれを被覆する第１の整
合層の端縁部と第２の整合層の端縁部とが共に折り返さ
れることによってレンズ本体の周縁部に対して機械的に
連結されているから、これらの端縁部を介して各整合層
がレンズ本体によって強固に保持されることになる。し
たがって、従来例のような利得の低下を招く接着剤を用
いることなく、レンズ本体と整合層との密着性を高める
ことができ、両者の剥離を有効に防止することができる
という効果が得られる。<Effects of the Invention> As explained above, in the lens antenna according to the present invention, both the edge portion of the first matching layer and the edge portion of the second matching layer that cover each surface of the lens body are Since it is mechanically connected to the peripheral edge of the lens body by being folded back, each matching layer is firmly held by the lens body via these edge parts. Therefore, it is possible to improve the adhesion between the lens body and the matching layer without using an adhesive that causes a decrease in gain as in the conventional example, and it is possible to effectively prevent separation between the two. .
第１図及び第２図は本実施例に係り、第１闇はレンズア
ンテナの概略構成を示Ｖ縦断面図、第２図は整合層の形
成手順を示す説明図である。また、第３図は、従来例に
係るレンズアンテナの概略構成を示す縦断面図である。
図における符号１はレンズ本体、２は第１の整合層、２
ａはその端縁部、３は第２の整合層、３ａはその端縁部
である。FIGS. 1 and 2 relate to this embodiment; the first image is a vertical cross-sectional view showing the schematic structure of a lens antenna, and FIG. 2 is an explanatory diagram showing the procedure for forming a matching layer. Moreover, FIG. 3 is a vertical cross-sectional view showing a schematic configuration of a lens antenna according to a conventional example. In the figure, numeral 1 is the lens body, 2 is the first matching layer, 2
a is its edge, 3 is the second matching layer, and 3a is its edge.
Claims (1)
第１の整合層（２）と、その他方の表面を被覆する第２
の整合層（３）とを備えており、第１の整合層（２）の
端縁部（２ａ）はレンズ本体（１）の周縁部（１ａ）で
折り返されて他方の表面にまで掛かっており、また、第
２の整合層（３）の端縁部（３ａ）は第１の整合層（２
）の端縁部（２ａ）を被覆して折り返されていることを
特徴とするレンズアンテナ。(1) A lens body (1), a first matching layer (2) covering one surface thereof, and a second matching layer (2) covering the other surface.
The edge (2a) of the first matching layer (2) is folded back at the peripheral edge (1a) of the lens body (1) and extends to the other surface. In addition, the edge portion (3a) of the second matching layer (3) is connected to the first matching layer (2).
) A lens antenna characterized in that the end edge portion (2a) of the lens antenna is covered and folded back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2316372A JP3033184B2 (en) | 1990-11-20 | 1990-11-20 | Lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2316372A JP3033184B2 (en) | 1990-11-20 | 1990-11-20 | Lens antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04185105A true JPH04185105A (en) | 1992-07-02 |
| JP3033184B2 JP3033184B2 (en) | 2000-04-17 |
Family
ID=18076364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2316372A Expired - Fee Related JP3033184B2 (en) | 1990-11-20 | 1990-11-20 | Lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3033184B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7088309B2 (en) | 2001-07-04 | 2006-08-08 | Murata Manufacturing Co., Ltd. | Lens antenna |
| US7301504B2 (en) | 2004-07-14 | 2007-11-27 | Ems Technologies, Inc. | Mechanical scanning feed assembly for a spherical lens antenna |
| US7474271B2 (en) | 2003-12-26 | 2009-01-06 | Sharp Kabushiki Kaisha | Feedhorn, radio wave receiving converter and antenna |
| EP2666620A1 (en) * | 2012-05-23 | 2013-11-27 | Canon Kabushiki Kaisha | Plastics optical component and method for manufacturing the same |
| US8947795B2 (en) | 2012-05-23 | 2015-02-03 | Canon Kabushiki Kaisha | Plastic optical element and method of manufacturing the same |
| US8964313B2 (en) | 2010-11-24 | 2015-02-24 | Canon Kabushiki Kaisha | Plastic optical element and method of making the same |
-
1990
- 1990-11-20 JP JP2316372A patent/JP3033184B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7088309B2 (en) | 2001-07-04 | 2006-08-08 | Murata Manufacturing Co., Ltd. | Lens antenna |
| US7474271B2 (en) | 2003-12-26 | 2009-01-06 | Sharp Kabushiki Kaisha | Feedhorn, radio wave receiving converter and antenna |
| US7301504B2 (en) | 2004-07-14 | 2007-11-27 | Ems Technologies, Inc. | Mechanical scanning feed assembly for a spherical lens antenna |
| US8964313B2 (en) | 2010-11-24 | 2015-02-24 | Canon Kabushiki Kaisha | Plastic optical element and method of making the same |
| EP2666620A1 (en) * | 2012-05-23 | 2013-11-27 | Canon Kabushiki Kaisha | Plastics optical component and method for manufacturing the same |
| US8947795B2 (en) | 2012-05-23 | 2015-02-03 | Canon Kabushiki Kaisha | Plastic optical element and method of manufacturing the same |
| US9360666B2 (en) | 2012-05-23 | 2016-06-07 | Canon Kabushiki Kaisha | Plastics optical component and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3033184B2 (en) | 2000-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090218 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |