JP2534709B2 - Cassegrain type antenna - Google Patents
Cassegrain type antennaInfo
- Publication number
- JP2534709B2 JP2534709B2 JP62132765A JP13276587A JP2534709B2 JP 2534709 B2 JP2534709 B2 JP 2534709B2 JP 62132765 A JP62132765 A JP 62132765A JP 13276587 A JP13276587 A JP 13276587A JP 2534709 B2 JP2534709 B2 JP 2534709B2
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- sub
- mirror
- type antenna
- cassegrain type
- 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.)
- Expired - Lifetime
Links
Landscapes
- Aerials With Secondary Devices (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、カセグレン形アンテナに関し、特に副反射
鏡の位置決め調整を容易かつ迅速に行ない得るカセグレ
ン形アンテナに関する。Description: TECHNICAL FIELD The present invention relates to a Cassegrain type antenna, and more particularly to a Cassegrain type antenna in which positioning adjustment of a sub-reflector can be performed easily and quickly.
（従来の技術） 第３図は従来のカセグレン形アンテナの副反射鏡の位
置決め方法を説明するための側面図、第４図及び第５図
は互いに異なる従来の他の副反射鏡の位置決め方法を説
明するための断面図である。(Prior Art) FIG. 3 is a side view for explaining a method for positioning a sub-reflecting mirror of a conventional Cassegrain type antenna, and FIGS. 4 and 5 show another conventional method for positioning a sub-reflecting mirror different from each other. It is sectional drawing for demonstrating.
以上に従来のカセグレン形アンテナにおける副反射鏡
２の位置決め調整方法について述べる。The positioning adjustment method of the sub-reflecting mirror 2 in the conventional Cassegrain type antenna is described above.
第３図に示す従来の副反射鏡の位置決め方法の場合、
副反射鏡２の鏡軸に目盛りを刻んだ鏡11を取付け、主反
射鏡の鏡軸上にセットした工学視準器12で副反射鏡２の
鏡11を視準して傾き，偏芯，を調整し，高さは鋼製巻尺
で計測する。In the case of the conventional sub-reflecting mirror positioning method shown in FIG. 3,
The scale 11 is attached to the mirror axis of the sub-reflecting mirror 2, and the engineering collimator 12 set on the mirror axis of the main reflecting mirror collimates the mirror 11 of the sub-reflecting mirror 2 to tilt, decenter, And measure the height with a steel tape measure.
第４図に示す位置決め方法の場合、主反射鏡の鏡軸上
にセットした位置決め治具13を副反射鏡２の鏡面側から
背面側に貫通させて位置を決める。第５図に示す位置決
め方法の場合、主反射鏡の鏡軸上にセットした位置決め
治具14を副反射鏡２の鏡面中央に挿通し、その高さと、
偏芯については位置決め治具14により決め、その傾きに
ついては、ダイヤルゲージ15を副反射鏡２の鏡面上で位
置決め治具14を中心として回転させ、このダイヤルゲー
ジ15の読みが同じになるよう副反射鏡２を調整する。In the case of the positioning method shown in FIG. 4, the positioning jig 13 set on the mirror axis of the main reflecting mirror is penetrated from the mirror surface side to the back surface side of the sub reflecting mirror 2 to determine the position. In the case of the positioning method shown in FIG. 5, the positioning jig 14 set on the mirror axis of the main reflecting mirror is inserted into the center of the mirror surface of the sub-reflecting mirror 2, and its height and
The eccentricity is determined by the positioning jig 14, and the inclination is rotated by rotating the dial gauge 15 on the mirror surface of the sub-reflecting mirror 2 about the positioning jig 14 so that the dial gauge 15 has the same reading. Adjust the reflector 2.
（発明が解決しようとする問題点） 前述したように第３図に示す従来のカセグレン形アン
テナにおける副反射鏡２の位置決め調整方法の場合、光
学視準器12と鏡11を使用する方法であって、光学視準器
12に鏡11の目盛りを写し、視準器の基準線と合致させる
調整方法であり、視準器12の操作に熟練を要し、調整は
特定の人にかぎられていた。また、副反射鏡２の鏡軸上
に鏡11を取り付けたとしても鏡11が鏡面の中心穴に固定
してあるから、精度的に問題があった。また第４図に示
す調整方法の場合、傾き，高さ，偏芯の位置決めが同時
にできるので優れた調整方法であるが、アンテナが大型
になるとそれに応じて位置決め治具13も大きくなり、重
量も重くなるので取扱いが非常に困難である。(Problems to be Solved by the Invention) As described above, in the case of the positioning adjustment method of the sub-reflecting mirror 2 in the conventional Cassegrain type antenna shown in FIG. 3, it is a method of using the optical collimator 12 and the mirror 11. Optical collimator
This is an adjustment method in which the scale of the mirror 11 is copied on the 12 to match the reference line of the collimator, and it requires skill to operate the collimator 12, and the adjustment was limited to a specific person. Even if the mirror 11 is mounted on the mirror axis of the sub-reflecting mirror 2, there is a problem in accuracy because the mirror 11 is fixed in the center hole of the mirror surface. The adjustment method shown in FIG. 4 is an excellent adjustment method because the tilt, height, and eccentricity can be positioned at the same time. However, as the antenna becomes larger, the positioning jig 13 becomes larger and the weight also increases. It becomes heavy and very difficult to handle.
第５図に示す調整方法には、傾きの調整をすれば足
り、高い精度で調整出来るが、ダイヤルゲージ15を副反
射鏡２の鏡面上を位置決め治具14を中心として回転させ
ながら何度もくり返し調整しないと精度が出しにくいか
ら、多くの調整時間を必要とし、更に大型アンテナにお
いては位置決め治具14が大型化して取扱いが困難になる
等の問題があった。In the adjustment method shown in FIG. 5, it is sufficient to adjust the inclination, and the adjustment can be performed with high accuracy. However, while rotating the dial gauge 15 on the mirror surface of the sub-reflecting mirror 2 about the positioning jig 14, the dial gauge 15 can be adjusted many times. Since it is difficult to obtain accuracy unless repeated adjustments are made, a lot of adjustment time is required, and in the case of a large antenna, the positioning jig 14 becomes large and handling becomes difficult.
本発明は、このような問題点を解決し、副反射鏡の位
置決め調整が容易で調整時間が短かくて足りるととも
に、大型のアンテナにも適用できるカセグレン形アンテ
ナを提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a Cassegrain antenna that can be easily adjusted for positioning the sub-reflecting mirror and requires a short adjustment time, and can be applied to a large antenna.
（問題点を解決するための手段） 前述の問題点を解決するために本発明が提供する手段
は、主反射鏡と、この主反射鏡の中央に設けてある放射
器と、この放射器に対向する副反射鏡と、この副反射鏡
を支持する支持体とを備え、当該副反射鏡が前記支持体
に調節自在に取り付けてあり、当該副反射鏡と前記主反
射鏡とが同軸上に位置しているカセグレン形アンテナに
おいて、前記副反射鏡の中心を軸方向に貫く筒体が前記
副反射鏡に取り付けてあり、レーザ光を受けた部分に色
が現われる透過性のターゲットが前記筒体の両端部にそ
れぞれ取り付けてあることを特徴とする。(Means for Solving the Problems) Means provided by the present invention for solving the above-mentioned problems include a main reflecting mirror, a radiator provided in the center of the main reflecting mirror, and An opposing sub-reflecting mirror and a support for supporting the sub-reflecting mirror are provided, the sub-reflecting mirror is adjustably attached to the support, and the sub-reflecting mirror and the main reflecting mirror are coaxial with each other. In the Cassegrain-shaped antenna located, a cylinder penetrating the center of the sub-reflecting mirror in the axial direction is attached to the sub-reflecting mirror, and the transparent target whose color appears at the portion receiving the laser beam is the cylinder. It is characterized in that it is attached to both ends of each.
（実施例） 次に、本発明について図面を参照して説明する。(Example) Next, this invention is demonstrated with reference to drawings.
第１図は本発明の一実施例のカセグレン形アンテナを
示す側面図、第２図は第１図のカセグレン形アンテナの
副反射器を示す拡大断面図である。FIG. 1 is a side view showing a Cassegrain type antenna according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view showing a sub-reflector of the Cassegrain type antenna of FIG.
図中、21は主反射鏡、22は副反射鏡、25は筒体、26,2
7はターゲット、28はレーザセオドライト、29は取付金
具、30は支持体である。In the figure, 21 is a main reflecting mirror, 22 is a sub-reflecting mirror, 25 is a cylindrical body, and 26,2.
7 is a target, 28 is a laser theodolite, 29 is a mounting bracket, and 30 is a support.
本実施例のカセグレン形アンテナは、主反射鏡21と、
この主反射鏡21の中央に設けてある放射器と、この放射
器に対向する副反射鏡22と、この副反射鏡22を支持する
支持体30とを備え、副反射鏡22が支持体30に調節自在に
取り付けてあり、第１図に示すように、副反射鏡22と主
反射鏡21とが同軸上に位置している。The Cassegrain type antenna of this embodiment includes a main reflecting mirror 21 and
The main reflector 21 has a radiator provided at the center thereof, a sub-reflector 22 facing the radiator, and a support 30 for supporting the sub-reflector 22, and the sub-reflector 22 supports the support 30. The sub-reflecting mirror 22 and the main reflecting mirror 21 are located coaxially with each other, as shown in FIG.
副反射鏡22には、第２図に示すように、副反射鏡22の
中心を軸方向に貫く筒体25が固定してある。この筒体25
の両端部には、透過性のターゲット26,27がそれぞれ取
り付けてある。各ターゲット26,27にはそれぞれ中心目
盛が刻んである。このターゲット26,27にレーザ光が当
ると、当った部分に赤等の色が現われる。As shown in FIG. 2, a cylindrical body 25 is fixed to the sub-reflecting mirror 22 so as to penetrate the center of the sub-reflecting mirror 22 in the axial direction. This cylinder 25
The transparent targets 26 and 27 are attached to both ends of each. Each target 26, 27 is engraved with a center scale. When the laser light hits the targets 26, 27, a color such as red appears on the hit parts.
本実施例のカセグレン形アンテナの副反射鏡22を調整
するには、まず副反射鏡22を支持体30に仮止めしてお
き、鋼製巻尺で副反射鏡22の高さを調整する。次に、軸
線上にセットしておいたレーザセオドライト28からレー
ザ光を反射し、そのレーザ光をターゲット26,27に照射
する。レーザ光を受けた部分は赤くなるので、ターゲッ
ト26,27上の各赤い点が重なり合うように副反射鏡22を
調整する。最後に、副反射鏡22の位置決めが完了したと
き取付金具29で副反射鏡22を支持体30に固定する。In order to adjust the sub-reflecting mirror 22 of the Cassegrain type antenna of the present embodiment, first, the sub-reflecting mirror 22 is temporarily fixed to the support 30, and the height of the sub-reflecting mirror 22 is adjusted with a steel tape measure. Next, the laser light is reflected from the laser theodolite 28 set on the axis, and the laser light is applied to the targets 26 and 27. Since the portion that receives the laser light turns red, the sub-reflecting mirror 22 is adjusted so that the red points on the targets 26 and 27 overlap. Finally, when the positioning of the sub-reflecting mirror 22 is completed, the sub-reflecting mirror 22 is fixed to the support 30 by the mounting bracket 29.
本実施例のカセグレン形アンテナによれば、副反射鏡
22の中心を軸方向に貫く筒体25が副反射鏡22に取り受け
てあり、レーザ光を受けた部分に赤色が現われる透過性
のターゲット26,27が筒体25の両端部にそれぞれ取り付
けてあるので、軸線上にセットしたレーザセオドライト
28をターゲット26,27に照射することにより、副反射鏡2
2の傾きや偏芯等の調整を容易かつ迅速に行なうことが
できる。According to the Cassegrain type antenna of this embodiment, the sub-reflecting mirror
A cylindrical body 25 penetrating the center of the 22 in the axial direction is received by the sub-reflecting mirror 22, and transparent targets 26 and 27 in which red color appears in the portion receiving the laser light are attached to both ends of the cylindrical body 25, respectively. So there is a laser theodolite set on the axis
By irradiating the targets 26 and 27 with 28, the sub-reflecting mirror 2
The inclination and eccentricity of 2 can be adjusted easily and quickly.
（発明の効果） 以上説明したように本考案のカセグレン形アンテナ
は、副反射鏡の傾きや偏芯等の調整を容易かつ迅速に行
なうことができる。(Effects of the Invention) As described above, the Cassegrain antenna of the present invention can easily and quickly adjust the tilt and decentering of the sub-reflecting mirror.
第１図は本発明の一実施例のカセグレン形アンテナを示
す側面図、第２図は第１図のカセグレン形アンテナの副
反射器を示す拡大断面図、第３図は従来のカセグレン形
アンテナの副反射鏡の位置決め方法を説明するための側
面図、第４図及び第５図は互いに異なる従来の他の副反
射鏡の位置決め方法を説明するための断面図である。 11……鏡、12……光学視準器、13,14……位置決め治
具、15……ダイヤルゲージ、21……主反射鏡、2,22……
副反射鏡、25……筒体、26,27……ターゲット、28……
レーザセオドライト、9,29……取付金具、10,30……支
持体。1 is a side view showing a Cassegrain type antenna according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view showing a sub-reflector of the Cassegrain type antenna shown in FIG. 1, and FIG. 3 is a conventional Cassegrain type antenna. FIG. 4 is a side view for explaining a positioning method of a sub-reflecting mirror, and FIGS. 4 and 5 are cross-sectional views for explaining another conventional positioning method for another sub-reflecting mirror. 11 …… Mirror, 12 …… Optical collimator, 13,14 …… Positioning jig, 15 …… Dial gauge, 21 …… Main reflector, 2,22 ……
Sub-reflector, 25 …… Cylinder, 26,27 …… Target, 28 ……
Laser theodolite, 9,29 ... Mounting bracket, 10,30 ... Support.
Claims (1)
ある放射器と、この放射器に対向する副反射鏡と、この
副反射鏡を支持する支持体とを備え、当該副反射鏡が前
記支持体に調節自在に取り付けてあり、当該副反射鏡と
前記主反射鏡とが同軸上に位置しているカセグレン形ア
ンテナにおいて、前記副反射鏡の中心を軸方向に貫く筒
体が前記副反射鏡に取り付けてあり、レーザ光を受けた
部分に色が現われる透過性のターゲットが前記筒体の両
端部にそれぞれ取り付けてあることを特徴とするカセグ
レン形アンテナ。1. A main reflecting mirror, a radiator provided at the center of the main reflecting mirror, a sub-reflecting mirror facing the radiator, and a support for supporting the sub-reflecting mirror. A Cassegrain-shaped antenna in which a reflecting mirror is adjustably attached to the support, and the sub-reflecting mirror and the main reflecting mirror are positioned coaxially, and a cylindrical body that axially penetrates the center of the sub-reflecting mirror. Is attached to the sub-reflecting mirror, and transmissive targets whose colors appear in the portions receiving the laser light are attached to both ends of the cylindrical body, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132765A JP2534709B2 (en) | 1987-05-28 | 1987-05-28 | Cassegrain type antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62132765A JP2534709B2 (en) | 1987-05-28 | 1987-05-28 | Cassegrain type antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63296504A JPS63296504A (en) | 1988-12-02 |
| JP2534709B2 true JP2534709B2 (en) | 1996-09-18 |
Family
ID=15089031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62132765A Expired - Lifetime JP2534709B2 (en) | 1987-05-28 | 1987-05-28 | Cassegrain type antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2534709B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4499495B2 (en) * | 2004-07-01 | 2010-07-07 | 財団法人光科学技術研究振興財団 | Pulse light transmission apparatus and pulse light transmission adjustment method |
-
1987
- 1987-05-28 JP JP62132765A patent/JP2534709B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63296504A (en) | 1988-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |