JPH054644B2 - - Google Patents
Info
- Publication number
- JPH054644B2 JPH054644B2 JP12402890A JP12402890A JPH054644B2 JP H054644 B2 JPH054644 B2 JP H054644B2 JP 12402890 A JP12402890 A JP 12402890A JP 12402890 A JP12402890 A JP 12402890A JP H054644 B2 JPH054644 B2 JP H054644B2
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- sub
- housing
- support shaft
- attached
- 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 - Fee Related
Links
Landscapes
- Telescopes (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は望遠鏡の副反射鏡移動機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a sub-reflector moving mechanism of a telescope.
＜従来の技術及び発明が解決しようとする課題＞
従来の望遠鏡の副反射鏡移動機構としては、例
えば第５図及び第６図に示されるようなものがあ
る。１が大型反射天体望遠鏡で、この大型反射天
体望遠鏡１の鏡筒２内に主反射鏡３と副反射鏡４
とが組み合わされた状態で収納支持されている。
つまり、主反射鏡３で反射された光束は集光され
て副反射鏡４に当たり、副反射鏡４では更にその
光束を主反射鏡３の中央孔３ａに通るように反射
して、光軸Ａ上の焦点位置ｆにピントを結ぶ。こ
こで、焦点位置ｆのある鏡筒２の接眼取付部５を
ラツク機構等で移動させることにより、焦点位置
ｆの調整を行うことができるが、この接眼取付部
５には重量の重い分光器等の観測機器が組付けら
れていると共に副反射鏡４を移動させる場合より
も３〜４倍長い移動距離を必要とするため、この
方法は好ましくない。そこで、副反射鏡４の方を
光軸Ａに沿つて移動させることとなるが、(ii)）移
動量が1/3或いは1/4で済む代わりに、その分３倍
〜４倍の高精度が要求され、(iii)）副反射鏡４の光
軸Ａに対する高精度な傾き調整も要求され、(iv)）
副反射鏡４を移動させるための機構が光速と干渉
しないように副反射鏡４よりも小径でコンパクト
なものとしなければならない。<Prior art and problems to be solved by the invention> Examples of conventional sub-reflector moving mechanisms for telescopes include those shown in FIGS. 5 and 6, for example. 1 is a large reflecting astronomical telescope, and inside the lens barrel 2 of this large reflecting astronomical telescope 1 are a main reflector 3 and a sub-reflector 4.
are stored and supported in a combined state.
In other words, the light beam reflected by the main reflector 3 is condensed and hits the sub-reflector 4, and the sub-reflector 4 further reflects the light beam so that it passes through the center hole 3a of the main reflector 3, and the optical axis A Focus on the upper focal point f. Here, the focal position f can be adjusted by moving the eyepiece mounting part 5 of the lens barrel 2 where the focal position f is located using a rack mechanism, but this eyepiece mounting part 5 is equipped with a heavy spectrometer. This method is not preferable because observation equipment such as the above is assembled and the movement distance is required to be 3 to 4 times longer than when moving the sub-reflector 4. Therefore, the sub-reflector 4 is moved along the optical axis A, but (ii)) the amount of movement is only 1/3 or 1/4, but the height is 3 to 4 times higher. (iii)) Highly accurate tilt adjustment of the sub-reflector 4 with respect to the optical axis A is also required; (iv))
The mechanism for moving the sub-reflector 4 must be smaller in diameter and more compact than the sub-reflector 4 so as not to interfere with the speed of light.
この発明はこのような従来の技術に着目してな
されたものであり、上記の如き〜を解決する
ことができる望遠鏡の副反射鏡移動機構を提供せ
んとするものである。 The present invention has been made with attention to such conventional techniques, and it is an object of the present invention to provide a sub-reflector moving mechanism for a telescope that can solve the above-mentioned problems.
＜課題を解決するための手段＞
この発明に係る望遠鏡の副反射鏡移動機構は、
上記の目的を達成するために、副反射鏡を取付け
た支持軸をハウジングへ出し入れ自在に収納する
と共に、該ハウジングを光軸に対して傾き調整自
在に支持したものである。<Means for solving the problem> The sub-reflector moving mechanism of the telescope according to the present invention includes:
In order to achieve the above object, a support shaft to which a sub-reflector is attached is housed in a housing so that it can be taken in and out, and the housing is supported so that its tilt can be adjusted with respect to the optical axis.
＜実施例＞
以下、この発明の好適な一実施例を第１図〜第
４図に基づいて説明する。尚、従来と重複する説
明は省略する。６がハウジングで、このハウジン
グ６の側面には４枚の支持板７，８が四方に立設
してある。この支持板７，８の先端は、鏡筒２の
内側に固定されたリング体９上のブラケツト１
０，１１に取付けてある。そして、隣接する一対
２つの支持板７の先端は傾き支点となるピン１２
にて回動自在にブラケツト１０へ取付けてある
が、それら支持板７と180゜反対側の支持板８に形
成されたピン１３はブラケツト１１に形成された
長孔１４内で移動・固定自在とされている。従つ
て、このピン１３と長孔１４の調整によりハウジ
ング６の光軸Ａに対する傾き調整を行うことがで
きる。<Example> Hereinafter, a preferred example of the present invention will be described based on FIGS. 1 to 4. Note that explanations that are redundant with those of the prior art will be omitted. Reference numeral 6 denotes a housing, and four support plates 7 and 8 are erected on the sides of the housing 6 on all sides. The tips of the support plates 7 and 8 are attached to a bracket 1 on a ring body 9 fixed inside the lens barrel 2.
It is attached to 0 and 11. The tips of a pair of adjacent support plates 7 are pins 12 that serve as tilting fulcrums.
The pins 13 formed in the support plate 8 on the opposite side of the support plate 7 by 180 degrees are movable and fixed in the elongated holes 14 formed in the bracket 11. has been done. Therefore, by adjusting the pin 13 and the elongated hole 14, the inclination of the housing 6 with respect to the optical axis A can be adjusted.
そして、このハウジング６内にスライドベアリ
ング１５を介して収納されているのが支持軸１６
である。この支持軸１６の先端には金属製のケー
ス１７が取付けられており、このケース１７にガ
ラス製の副反射鏡１８が取付てある。ケース１７
の外周には押えフランジ１９が設けてあり、この
押えフランジ１９にて副反射鏡１８を支持してい
る。また、押えフランジ１９には結晶性プラスチ
ツクであるジユラコン（商品名）製の支持体２０
が取付けてあり、この支持体２０にて副反射鏡１
８の外側面を当接支持している。支持体２０にジ
ユラコン（商品名）を採用したのは、金属製のケ
ース１７とガラス製の副反射鏡１８との熱膨張に
よる〓間発生を防止するためである。すなわち、
温度が上がるとケース１７が外側へ大きく熱膨張
し、押えフランジ１９と副反射鏡１８の外側面と
の間に〓間が発生し得るが、このジユラコン（商
品名）製の支持体２０は大変に熱膨張率が高いた
めに、ケース１７の外側への膨張とは逆に、ちよ
うどケース１７の熱膨張を打ち消すように内側へ
向けて大きく熱膨張を起こすので、前記発生し得
る〓間をうめることができる。従つて、支持体２
０は低温でも高温でも高温でも常に副反射鏡１８
の外側面に当接した状態となる。従つて、副反射
鏡１８がケース１７内でガタついたりすることが
なく、副反射鏡１８の支持精度が高い。 A support shaft 16 is housed in the housing 6 via a slide bearing 15.
It is. A metal case 17 is attached to the tip of this support shaft 16, and a glass sub-reflector 18 is attached to this case 17. Case 17
A presser flange 19 is provided on the outer periphery of the mirror, and the sub-reflector 18 is supported by the presser flange 19. Further, the presser flange 19 is provided with a support 20 made of crystalline plastic, ``Dyuracon'' (trade name).
is attached, and the sub-reflector 1 is mounted on this support 20.
The outer surface of 8 is abutted and supported. The reason why Diuracon (trade name) is used for the support body 20 is to prevent the occurrence of gaps due to thermal expansion between the metal case 17 and the glass sub-reflector 18. That is,
When the temperature rises, the case 17 thermally expands outward and a gap may occur between the holding flange 19 and the outer surface of the sub-reflector 18. Since the coefficient of thermal expansion is high in can be filled. Therefore, support 2
0 is always the sub-reflector 18 whether it is low or high temperature.
It comes into contact with the outer surface of. Therefore, the sub-reflector 18 does not wobble within the case 17, and the support accuracy of the sub-reflector 18 is high.
また、支持軸１６の先端フランジ２１とケース
１７との間には、互いに向かい合う押しネジ２２
と引きネジ２３の対が四方に設けられている。す
なわち、引きネジ２３は先端がケース１７内に入
つており、ケース１７を奥側Ｘへ引き寄せる。押
しネジ２２はその先端でケース１７を手前側Ｙへ
押す。この２つのネジＸ、Ｙにより、副反射鏡１
８（ケース１７）の光軸Ａに対する傾き調整を行
うことができる。 Further, between the tip flange 21 of the support shaft 16 and the case 17, there are set screws 22 facing each other.
and pairs of pull screws 23 are provided on all sides. That is, the tip of the draw screw 23 is inserted into the case 17, and the case 17 is drawn toward the back side X. The push screw 22 pushes the case 17 toward the front side Y with its tip. With these two screws X and Y, the sub-reflector 1
8 (case 17) with respect to the optical axis A can be adjusted.
ハウジング６の奥側には、支持軸１６のネジ孔
２４へ螺合するスクリユー２５がベアリング６を
介して取付けてある。このスクリユー２５には回
転ギア２７が取付けてある、この回転ギア２７は
ハウジング６に固定されたモータ２８のモータギ
ア２９と噛合している。従つて、このモータ２８
を回転させることによりスクリユー２５が回転
し、支持軸１６を副反射鏡１８ごと奥側Ｘ、手前
側Ｙへ各々移動させることができる。尚、支持軸
１６に設けたピン３０がハウジング６に形成した
長孔３１内に係合しているため、支持軸１６自体
はスクリユー２５により回転することはない。３
２はカバーで、前記回転ギア２７やモータギア２
９を覆うためのものである。そして、前記の機構
は副反射鏡１８の径のよりも小さくてコンパクト
なので、光束の邪魔になることはない。 A screw 25 that is screwed into the screw hole 24 of the support shaft 16 is attached to the back side of the housing 6 via a bearing 6. A rotating gear 27 is attached to this screw 25, and this rotating gear 27 meshes with a motor gear 29 of a motor 28 fixed to the housing 6. Therefore, this motor 28
By rotating the screw 25, the support shaft 16 can be moved along with the sub-reflector 18 to the back side X and the front side Y, respectively. Note that since the pin 30 provided on the support shaft 16 is engaged in the elongated hole 31 formed in the housing 6, the support shaft 16 itself is not rotated by the screw 25. 3
2 is a cover, which covers the rotating gear 27 and the motor gear 2.
This is to cover 9. Since the mechanism described above is smaller and more compact than the diameter of the sub-reflector 18, it does not interfere with the light flux.
次に副反射鏡１８の傾き調整について説明す
る。まず、支持軸１６に副反射鏡１８が真つ直ぐ
に取付けられていなければならない。そのための
検査方法が第３図に示してある。すなわち、副反
射鏡１８をその中心軸Ｂを中心にして回転させ。
そして、副反射鏡１８に対して外部からレーザ光
線Ｌを照射し、その反射したレーザ光線Ｌがセン
サーＳの一点Ｐで不動ならば、副反射鏡１８は支
持軸１６に対して真つ直ぐ付いている。もし、直
つ直ぐ付いていない場合には押しネジ２２と引き
ネジ２３とで調整して直つ直ぐ（中心軸Ｂに対し
て垂直）にする。 Next, the adjustment of the inclination of the sub-reflector 18 will be explained. First, the sub-reflector 18 must be attached straight to the support shaft 16. The inspection method for this purpose is shown in FIG. That is, the sub-reflector 18 is rotated about its central axis B.
Then, if the sub-reflector 18 is irradiated with a laser beam L from the outside and the reflected laser beam L is fixed at one point P of the sensor S, the sub-reflector 18 will be aligned straight with respect to the support shaft 16. ing. If it is not attached straight, adjust it with the push screw 22 and pull screw 23 to make it straight (perpendicular to the central axis B).
そして、このようにして副反射鏡１８がまつす
ぐに取付けられた支持軸１６をハウジング６内に
収納する。そして、今度は支持軸１６の中心軸Ｂ
が望遠鏡の光軸Ａに合致しているかどうか（傾い
ていないかどうか）を調べる。もし、傾いていた
際には支持板８の先端のピン１３とブラケツト１
１の長孔１４との調整により、ハウジング６全体
の傾きを変えて修正する。このように、ハウジン
グ６全体の傾きを調整できるのが、本発明の特徴
の１つである。つまり、押しネジ２２と引きネジ
２３だけでも副反射鏡１８自体の傾きの調整は行
なえるが、この調整だけでは副反射鏡１８の中心
軸Ｂを光軸Ａと間隔をおいて平行にすることはで
きるが、中心軸Ｂを光軸Ａ上にのせて完全一致さ
せることはできない。 Then, the support shaft 16 to which the sub-reflector 18 is immediately attached is housed in the housing 6. Then, this time, the central axis B of the support shaft 16
Check whether it is aligned with the optical axis A of the telescope (or not tilted). If it is tilted, the pin 13 at the tip of the support plate 8 and the bracket 1
1, the inclination of the entire housing 6 is changed and corrected. One of the features of the present invention is that the inclination of the entire housing 6 can be adjusted in this way. In other words, the inclination of the sub-reflector 18 itself can be adjusted using only the push screw 22 and pull screw 23, but this adjustment alone cannot make the center axis B of the sub-reflector 18 parallel to the optical axis A with a distance between them. However, it is not possible to place the central axis B on the optical axis A and make them completely coincide with each other.
＜発明の効果＞
この発明に係る望遠鏡の副反射鏡移動機構は、
以上説明してきた如き内容のものであつて、副反
射鏡の高精度な傾き調整を行なえるので、副反射
鏡の奥側及び手前側への移動を正確に行うことが
きる。また、副反射鏡を移動させるための機構が
コンパクトなため、光束と干渉せず鮮明な反射像
を得ることができる。<Effects of the Invention> The telescope sub-reflector moving mechanism according to the present invention has the following features:
With the contents as described above, the tilt of the sub-reflecting mirror can be adjusted with high precision, so that the sub-reflecting mirror can be accurately moved to the back side and the front side. Furthermore, since the mechanism for moving the sub-reflector is compact, a clear reflected image can be obtained without interfering with the light flux.
第１図はこの発明の一実施例に係る副反射鏡移
動機構を示す断面図、第２図は第１図で示した副
反射鏡移動機構の斜視図、第３図は副反射鏡の傾
き検査方法を示す説明図、第４図は第３図中矢印
方向から見た支持軸の側面図、第５図は従来の
大型反射天体望遠鏡を示す側面図、そして第６図
は従来の主反射鏡と副反射鏡との組合わせ状態を
示す説明図である。
２……鏡筒、６……ハウジング、１６……支持
軸、１８……副反射鏡、Ａ……光軸。
Fig. 1 is a sectional view showing a sub-reflector moving mechanism according to an embodiment of the present invention, Fig. 2 is a perspective view of the sub-reflector moving mechanism shown in Fig. 1, and Fig. 3 is a tilt of the sub-reflector. An explanatory diagram showing the inspection method, Fig. 4 is a side view of the support shaft seen from the direction of the arrow in Fig. 3, Fig. 5 is a side view showing a conventional large reflective astronomical telescope, and Fig. 6 is a conventional main reflector. It is an explanatory view showing a combination state of a mirror and a sub-reflector. 2... Lens barrel, 6... Housing, 16... Support shaft, 18... Sub-reflector, A... Optical axis.
Claims (1)
出し入れ自在に収納すると共に、該ハウジングを
光軸に対して傾き調整自在に支持したことを特徴
とする望遠鏡の副反射鏡移動機構。1. A sub-reflector moving mechanism for a telescope, characterized in that a support shaft to which a sub-reflector is attached is housed in a housing such that it can be moved in and out of the housing, and the housing is supported such that its tilt can be adjusted with respect to an optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12402890A JPH0420914A (en) | 1990-05-16 | 1990-05-16 | Auxiliary reflection mirror moving mechanism for telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12402890A JPH0420914A (en) | 1990-05-16 | 1990-05-16 | Auxiliary reflection mirror moving mechanism for telescope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0420914A JPH0420914A (en) | 1992-01-24 |
| JPH054644B2 true JPH054644B2 (en) | 1993-01-20 |
Family
ID=14875248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12402890A Granted JPH0420914A (en) | 1990-05-16 | 1990-05-16 | Auxiliary reflection mirror moving mechanism for telescope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420914A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9711363D0 (en) * | 1997-06-02 | 1997-07-30 | Pilkington Perkin Elmer Ltd | Optical system |
| JP5872062B2 (en) * | 2012-11-13 | 2016-03-01 | 三菱電機株式会社 | Directional axis estimation device |
-
1990
- 1990-05-16 JP JP12402890A patent/JPH0420914A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0420914A (en) | 1992-01-24 |
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