JPH07119891B2 - Actuator for mirror support - Google Patents
Actuator for mirror supportInfo
- Publication number
- JPH07119891B2 JPH07119891B2 JP1083161A JP8316189A JPH07119891B2 JP H07119891 B2 JPH07119891 B2 JP H07119891B2 JP 1083161 A JP1083161 A JP 1083161A JP 8316189 A JP8316189 A JP 8316189A JP H07119891 B2 JPH07119891 B2 JP H07119891B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- slide mechanism
- universal joint
- cell
- spring
- 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)
- Mounting And Adjusting Of Optical Elements (AREA)
- Vibration Prevention Devices (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は光学望遠鏡用薄型ミラーを支持し、この薄型
ミラーの裏面側から最適な荷重で支持することにより、
薄型ミラーの鏡面を所定の形状に保つミラーサポート用
アクチユエータに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention supports a thin mirror for an optical telescope, and by supporting the thin mirror from the back side with an optimum load,
The present invention relates to an actuator for mirror support that keeps the mirror surface of a thin mirror in a predetermined shape.
第５図は従来のミラーサポート用アクチユエータの原理
を示すもので、図において、１はミラー、２はミラー１
下方に設けられたミラーセル、３はミラー１裏面の穴付
近に設けられたロードセル、４はミラー１の裏面穴内を
直進案内するスライド機構、５はスライド機構４内に取
付けられた自在継手、７は自在継手５に回転結合された
支持棒、６は支持棒７のミラーセル２付近に取付けられ
た自在継手、８は自在継手６に回転結合され、ミラーセ
ル２内を直進案内するスライド機構、９はスライド機構
８に結合されたばね、10はばね９に結合され、他端をミ
ラーセル２に取付けられた送り機構、11は支持棒７のス
ライド機構４と送り側に取付けられたカウンタウエイト
である。FIG. 5 shows the principle of a conventional mirror support actuator, in which 1 is a mirror and 2 is a mirror 1.
A mirror cell provided below, 3 is a load cell provided in the vicinity of the hole on the rear surface of the mirror 1, 4 is a slide mechanism for guiding straightly in the hole on the rear surface of the mirror 1, 5 is a universal joint mounted in the slide mechanism 4, and 7 is A support rod rotatably coupled to the universal joint 5, 6 is a universal joint mounted near the mirror cell 2 of the support rod 7, 8 is a slide mechanism rotatably coupled to the universal joint 6, and guides straightly in the mirror cell 2, and 9 is a slide. A spring coupled to the mechanism 8, 10 is coupled to the spring 9, and the other end is a feed mechanism attached to the mirror cell 2, and 11 is a slide mechanism 4 of the support rod 7 and a counterweight attached to the feed side.
次に動作について説明する。ミラー１はその裏面の穴内
に装着されたスライド機構４や自在継手５や支持棒７で
支持されている。ミラー１の自重のうち、ミラー１の鏡
軸に垂直な方向の成分は以下のようにして最適支持状態
を保たれる。第６図にミラー１の鏡軸と垂直な方向の最
適な支持力の大きさをミラー１の姿勢角に対して表した
ものを示す。ミラー１の自重のうち、ミラー１の鏡軸と
垂直な方向の成分はスライド機構４、自在継手５を介し
て支持棒７に伝わり、自在継手６を回転中心とするモー
メント力を生じさせる。カウンタウエイト11の自重を調
整することにより、自在継手６を回転中心とし、上記モ
ーメント力と方向が逆で、大きさが等しいモーメント力
を負荷することができ、その結果ミラー１の自重のう
ち、ミラー１の鏡軸と垂直な方向の成分と方向が逆で、
大きさが等しい力をミラー１に負荷する。ミラー１の姿
勢が変化した場合、ミラー１の鏡軸と垂直な方向の力
は、ミラー１の自重、カウンタウエイト11の自重とも姿
勢角の余弦倍となるため、上記のモーメント力の釣り合
いは保たれ、よつて常にミラー１の鏡軸と垂直な方向の
力の釣り合いは保たれる。次にミラー１の自重のうち、
ミラー１の鏡軸方向の成分は次のようにして最適支持状
態を保たれる。第７図にミラー１の鏡軸方向の最適な支
持力の大きさをミラー１の姿勢角に対して表したものを
示す。ミラー１の自重のうち、ミラー１の鏡軸方向の成
分は、ロードセル３、自在継手５、支持棒７、自在継手
６、スライド機構８、ばね９、送り機構10を介してミラ
ーセル２に伝わる。その力の大きさは、ロードセル３に
て検出される。Next, the operation will be described. The mirror 1 is supported by a slide mechanism 4, a universal joint 5 and a support rod 7 mounted in the holes on the back surface of the mirror 1. The component of the self-weight of the mirror 1 in the direction perpendicular to the mirror axis of the mirror 1 is maintained in the optimum supporting state as follows. FIG. 6 shows the optimum magnitude of supporting force in the direction perpendicular to the mirror axis of the mirror 1 with respect to the attitude angle of the mirror 1. A component of the self-weight of the mirror 1 in a direction perpendicular to the mirror axis of the mirror 1 is transmitted to the support rod 7 via the slide mechanism 4 and the universal joint 5 to generate a moment force about the universal joint 6 as a rotation center. By adjusting the own weight of the counterweight 11, it is possible to apply a moment force having a direction opposite to that of the moment force and having the same magnitude with the universal joint 6 as the center of rotation. As a result, among the own weight of the mirror 1, The direction of the component perpendicular to the mirror axis of mirror 1 is opposite,
A force of equal magnitude is applied to the mirror 1. When the posture of the mirror 1 is changed, the force of the mirror 1 in the direction perpendicular to the mirror axis becomes the cosine times of the posture angle for both the self-weight of the mirror 1 and the self-weight of the counterweight 11, so the balance of the moment force is maintained. Therefore, the force balance in the direction perpendicular to the mirror axis of the mirror 1 is always maintained. Next, of the weight of the mirror 1,
The component in the mirror axis direction of the mirror 1 is kept in the optimum supporting state as follows. FIG. 7 shows the magnitude of the optimum supporting force of the mirror 1 in the mirror axis direction with respect to the posture angle of the mirror 1. A component of the mirror 1 in its own weight in the mirror axis direction of the mirror 1 is transmitted to the mirror cell 2 via the load cell 3, the universal joint 5, the support rod 7, the universal joint 6, the slide mechanism 8, the spring 9, and the feed mechanism 10. The magnitude of the force is detected by the load cell 3.
前述したように、ミラー１は、その姿勢により、最適な
ミラー１の鏡軸方向の成分の支持力の大きさが決まつて
おり、上述したロードセル３にて検出された支持力の大
きさが最適荷重値と異なつていると、以下に述べる動作
により、ミラー１の鏡軸方向の支持力の大きさを最適な
荷重に近づける。荷重が最適荷重より小さいとき、送り
機構10によりばね９を押し縮め、力を発生させる。ここ
で生じた力はスライド機構８、自在継手６、支持棒７、
自在継手５、スライド機構４、ロードセル３を介してミ
ラー１に伝わる。ばね９の押し縮め量を適切に選ぶこと
により、ミラー１を最適な荷重で支持することができ
る。逆に支持棒７の軸方向の荷重が最適荷重より大きい
ときは、送り機構10により、ばね９をひろげるようにす
る。As described above, the mirror 1 determines the optimum magnitude of the supporting force of the component in the mirror axis direction of the mirror 1 depending on its posture, and the magnitude of the supporting force detected by the load cell 3 described above is determined. When the value is different from the optimum load value, the magnitude of the supporting force of the mirror 1 in the mirror axis direction is brought close to the optimum load by the operation described below. When the load is smaller than the optimum load, the feed mechanism 10 compresses the spring 9 to generate a force. The force generated here is applied to the slide mechanism 8, the universal joint 6, the support rod 7,
It is transmitted to the mirror 1 via the universal joint 5, the slide mechanism 4, and the load cell 3. By appropriately selecting the amount of compression and compression of the spring 9, the mirror 1 can be supported with an optimum load. On the contrary, when the load of the support rod 7 in the axial direction is larger than the optimum load, the feed mechanism 10 can expand the spring 9.
従来のミラーサポータ用アクチユエータは以上のように
構成されているので、ミラー１に外力（例えば風による
力、あるいはミラー１の慣性力）が負荷されたとき、ミ
ラー１の鏡軸方向に微少振動が生じ、その振動を減衰さ
せる要素がこの装置に備わつていないため、振動が継続
され、望遠鏡の性能の劣化を生じさせるという問題点が
あつた。Since the conventional actuator for mirror supporter is configured as described above, when an external force (for example, a wind force or an inertial force of the mirror 1) is applied to the mirror 1, a slight vibration is generated in the mirror axis direction of the mirror 1. However, there is a problem in that the vibration is continued and the performance of the telescope is deteriorated because the device does not have an element for damping the vibration.
この発明は上記のような問題点を解消するためになされ
たもので、上記振動を早く減衰させ、望遠鏡の性能の劣
化を最小限におさえることができる装置を得ることを目
的とする。The present invention has been made to solve the above problems, and an object of the present invention is to obtain a device that can quickly attenuate the above vibrations and minimize deterioration of the performance of the telescope.
この発明に係るミラーサポート用アクチユエータは、従
来の装置のスライド機構とミラーセル間にゴム、ダンパ
などの減衰材を設けたものである。The mirror support actuator according to the present invention is provided with a damping material such as rubber or a damper between the slide mechanism and the mirror cell of the conventional device.
〔作用〕 この発明におけるミラーサポート用アクチユエータはミ
ラーに生じた微少振動を減衰材にて早く減衰させるもの
である。[Operation] The mirror support actuator according to the present invention quickly damps the minute vibration generated in the mirror by the damping material.
以下、この発明の一実施例を図について説明する。第１
図において、１はミラー、２はミラー１下方に設けられ
たミラーセル、３はミラー１裏面の穴付近に設けられた
ロードセル、４はミラー１の裏面穴内を直進案内するス
ライド機構、５はスライド機構５内に取付けられた自在
継手、７は自在継手５に回転結合された支持棒、６は支
持棒７のミラーセル２付近に取付けられた自在継手、８
は自在継手６に回転結合され、ミラーセル２内を直進案
内するスライド機構、９はスライド機構８に結合された
ばね、10はばね９に結合され、他端がミラーセル２に取
付けられた送り機構、11は支持棒７のスライド機構４と
逆側に取付けられたカウンタウエイト、12はミラーセル
２とスライド機構８の間に取付けられた防振ゴムなどの
減衰材である。第２図にこの実施例の鳥瞰図を示す。各
部の符号は第１図と同じである。An embodiment of the present invention will be described below with reference to the drawings. First
In the figure, 1 is a mirror, 2 is a mirror cell provided below the mirror 1, 3 is a load cell provided in the vicinity of a hole on the rear surface of the mirror 1, 4 is a slide mechanism for guiding straightly through the rear hole of the mirror 1, and 5 is a slide mechanism. 5 is a universal joint mounted in 5, 7 is a support rod rotationally coupled to the universal joint 5, 6 is a universal joint mounted near the mirror cell 2 of the support rod 7, 8
Is a slide mechanism that is rotationally coupled to the universal joint 6 and guides straightly inside the mirror cell 2, 9 is a spring coupled to the slide mechanism 8, 10 is a coupling mechanism coupled to the spring 9, and the other end is a feed mechanism attached to the mirror cell 2, 11 Is a counterweight attached to the opposite side of the support rod 7 from the slide mechanism 4, and 12 is a damping material such as a vibration-proof rubber attached between the mirror cell 2 and the slide mechanism 8. FIG. 2 shows a bird's-eye view of this embodiment. The reference numerals of the respective parts are the same as those in FIG.
次に動作について説明する。ミラー１の自重のうち、ミ
ラー１の鏡軸に垂直な方向の成分は、従来の装置と同
様、ミラー１の自重と釣り合うだけのカウンタウエイト
11と支持棒７のミラー１側と逆側に取付けることによ
り、最適支持状態に保たれる。一方、ミラー１の自重の
うちミラー１の鏡軸方向の成分は、従来の装置と同様、
送り機構10にてばね９を伸縮して、それによつて生じる
力をスライド機構８、自在継手６、支持棒７、自在継手
５、スライド機構４、ロードセル３を介してミラー１に
伝え、さらにこの力の大きさをロードセル３にて検出し
ながら、最適支持荷重にて支持される。ミラー１の表側
からミラー１に風が当たつて、ミラー１が鏡軸方向に、
ミラー１の固有振動数約20Hz程度で微少振動したとき、
この振動の一部はロードセル３、スライド機構４、自在
継手５、支持棒７、自在継手６、スライド機構８、ばね
９、送り機構10を介してミラーセル２に伝わる。その他
はロードセル３、スライド機構４、自在継手５、支持棒
７、自在継手６、スライド機構８、減衰材12を介してミ
ラーセル２に伝わる。しかし、この振動は減衰材12にて
十分に早く減衰される。よつて望遠鏡の性能の劣化を生
じさせることはない。Next, the operation will be described. Of the self-weight of the mirror 1, the component in the direction perpendicular to the mirror axis of the mirror 1 is a counterweight sufficient to balance the self-weight of the mirror 1, as in the conventional device.
Optimal support is maintained by attaching 11 and the support rod 7 to the side opposite to the mirror 1 side. On the other hand, of the weight of the mirror 1, the component in the mirror axis direction of the mirror 1 is the same as in the conventional device.
The feed mechanism 10 expands and contracts the spring 9, and the force generated thereby is transmitted to the mirror 1 via the slide mechanism 8, the universal joint 6, the support rod 7, the universal joint 5, the slide mechanism 4, and the load cell 3, and this The load cell 3 detects the magnitude of the force and supports the load cell 3 with an optimum support load. The wind hits the mirror 1 from the front side of the mirror 1, and the mirror 1 moves in the mirror axis direction.
When the natural frequency of the mirror 1 is about 20Hz
Part of this vibration is transmitted to the mirror cell 2 via the load cell 3, the slide mechanism 4, the universal joint 5, the support rod 7, the universal joint 6, the slide mechanism 8, the spring 9, and the feed mechanism 10. Others are transmitted to the mirror cell 2 via the load cell 3, the slide mechanism 4, the universal joint 5, the support rod 7, the universal joint 6, the slide mechanism 8 and the damping material 12. However, this vibration is damped sufficiently quickly by the damping material 12. Therefore, the performance of the telescope is not deteriorated.
なお、上記実施例では、ミラーセル２とスライド機構８
の間に防振ゴムあるいはオイルダンパ等の減衰材12を別
設したものを示したが、スライド機構８自身に減衰材を
設け、これによりスライド機構８を支持しているミラー
セル２との間で減衰効果を得るようにすることも可能で
ある。第３図において、１〜11までは第１図の実施例に
示したものと同一である。13はスライド機構８に貼り付
けられた防振ゴム等の減衰材である。ミラー１の表側か
らミラー１に風が当たつて、ミラー１が鏡軸方向にミラ
ー１の固有振動数約20Hz程度で微少振動したとき、この
振動の一部はロードセル３、スライド機構４、自在継手
５、支持棒７、自在継手６、スライド機構８、ばね９、
送り機構10を介して、その他はスライド機構８の減衰材
13を介してミラーセル２に伝わる。従つて、この振動は
スライド機構８上に貼られた減衰材13にて十分に早く減
衰されるため、望遠鏡の性能を劣化させることはない。In the above embodiment, the mirror cell 2 and the slide mechanism 8 are used.
Although a damping material 12 such as a vibration-proof rubber or an oil damper is separately provided between the sliding mechanism 8 and the mirror cell 2 supporting the sliding mechanism 8, the damping mechanism is provided on the sliding mechanism 8 itself. It is also possible to obtain a damping effect. In FIG. 3, 1 to 11 are the same as those shown in the embodiment of FIG. Reference numeral 13 is a damping material such as a vibration-proof rubber attached to the slide mechanism 8. When the wind hits the mirror 1 from the front side of the mirror 1 and the mirror 1 slightly vibrates in the axis direction of the mirror 1 at a natural frequency of about 20 Hz, a part of this vibration is caused by the load cell 3, the slide mechanism 4, and the free movement. Joint 5, support rod 7, universal joint 6, slide mechanism 8, spring 9,
Damping material for slide mechanism 8 via feed mechanism 10
It is transmitted to the mirror cell 2 via 13. Therefore, this vibration is damped sufficiently quickly by the damping material 13 attached on the slide mechanism 8, so that the performance of the telescope is not deteriorated.
第４図はさらにこの発明の他の実施例を示すもので、１
〜11は第１図のものと同様である。14は上記ばね９とス
ライド機構８との間に取付けられたゴムなどからなる減
衰材である。FIG. 4 shows another embodiment of the present invention.
11 are the same as those in FIG. Reference numeral 14 is a damping member made of rubber or the like, which is attached between the spring 9 and the slide mechanism 8.
この場合も、ミラー１の固有振動数での微少振動は、ロ
ードセル３、スライド機構４、自在継手５、支持棒７、
自在継手６、スライド機構８、減衰材14、ばね９、送り
機構10を介してミラーセル２に伝わる。しかし、この振
動は減衰材14にて十分早く減衰される。Also in this case, the minute vibration at the natural frequency of the mirror 1 is caused by the load cell 3, the slide mechanism 4, the universal joint 5, the support rod 7,
It is transmitted to the mirror cell 2 via the universal joint 6, the slide mechanism 8, the damping material 14, the spring 9, and the feed mechanism 10. However, this vibration is damped sufficiently quickly by the damping material 14.
以上のようにこの発明によれば、減衰材をミラーとミラ
ーセル間に設けたため、外力（主に風）によつて生じる
ミラーの微少振動を十分早く減衰させ、望遠鏡の性能を
劣化させることのない装置を得られる効果がある。As described above, according to the present invention, since the damping material is provided between the mirror and the mirror cell, the minute vibration of the mirror caused by the external force (mainly wind) is sufficiently damped, and the performance of the telescope is not deteriorated. There is an effect that the device can be obtained.
第１図、第２図はこの発明の一実施例によるミラーサポ
ート用アクチユエータを示す原理図及び鳥瞰図、第８図
はこの発明の他の実施例を示す鳥瞰図、第４図はこの発
明の他の実施例を示す原理図、第５図は従来のミラーサ
ポート用アクチユエータを示す原理図、第６図、第７図
は最適支持荷重を示す図である。 図中、１はミラー、２はミラーセル、３はロードセル、
４、８はスライド機構、５、６は自在継手、７は支持
棒、９はばね、10は送り機構、11はカウンタウエイト、
12、13、14は減衰材である。 なお図中同一符号は同一または相当部分を示す。1 and 2 are a principle view and a bird's-eye view showing an actuator for mirror support according to an embodiment of the present invention, FIG. 8 is a bird's-eye view showing another embodiment of the present invention, and FIG. 4 is another view of the present invention. FIG. 5 is a principle diagram showing an embodiment, FIG. 5 is a principle diagram showing a conventional mirror support actuator, and FIGS. 6 and 7 are diagrams showing optimum supporting loads. In the figure, 1 is a mirror, 2 is a mirror cell, 3 is a load cell,
4, 8 are slide mechanisms, 5, 6 are universal joints, 7 are support rods, 9 are springs, 10 are feed mechanisms, 11 are counterweights,
12, 13, 14 are damping materials. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (4)
る機構であって、ミラー裏面穴付近に取付けられたロー
ドセル、このロードセルに接合され、上記ミラー裏面穴
内を直進案内する第１のスライド機構、このスライド機
構に取付けられた第１の自在継手、この自在継手に回転
結合され、上記ミラーセル付近に第２の自在継手を有
し、この自在継手に対して上記第１の自在継手と逆側の
端部にカウンタウエイトが取付けられた支持棒、上記第
２の自在継手に回転結合され、上記ミラーセル内を直進
案内する第２のスライド機構、このスライド機構を支持
し、かつこれに力を加えるばね、このばねを伸縮させる
送り機構より構成されるミラーサポート用アクチユエー
タにおいて、上記第２のスライド機構と上記ミラーセル
との間に防振ゴム、ダンパ等の減衰材を設けたことを特
徴とするミラーサポート用アクチユエータ。1. A mechanism for supporting a mirror installed on a mirror cell, the load cell being mounted in the vicinity of a hole in the rear surface of the mirror, and a first slide mechanism joined to the load cell for guiding straightly in the hole in the rear surface of the mirror. A first universal joint attached to the slide mechanism, a second universal joint rotatably coupled to the universal joint, and a second universal joint near the mirror cell. A support rod having a counterweight attached to an end thereof, a second slide mechanism that is rotationally coupled to the second universal joint and linearly guides inside the mirror cell, and a spring that supports the slide mechanism and applies a force thereto. In a mirror support actuator including a feed mechanism that expands and contracts the spring, a vibration damping rubber is provided between the second slide mechanism and the mirror cell. Mirror support for actuator, characterized in that a damping material such as damper.
イド機構とミラーセルとの間に別設されたことを特徴と
する請求項１記載のミラーサポート用アクチユエータ。2. An actuator for mirror support according to claim 1, wherein a damping material such as a vibration-proof rubber or a damper is provided separately between the second slide mechanism and the mirror cell.
る機構であって、ミラー裏面穴付近に取付けられたロー
ドセル、このロードセルに接合され、上記ミラー裏面穴
内を直進案内する第１のスライド機構、このスライド機
構に取付けられた第１の自在継手、この自在継手に回転
結合され、上記ミラーセル付近に第２の自在継手を有
し、この自在継手に対して上記第１の自在継手と逆側の
端部にカウンタウエイトが取付けられた支持棒、上記第
２の自在継手に回転結合され、上記ミラーセル内を直進
案内する第２のスライド機構、このスライド機構を支持
し、かつこれに力を加えるばね、このばねを伸縮させる
送り機構より構成されるミラーサポート用アクチユエー
タにおいて、上記第２のスライド機構にはその内部に一
体に減衰材を設け、これにより上記第２のスライド機構
を支持しているミラーセルとの間で振動の減衰効果を得
るようにしたことを特徴とするミラーサポート用アクチ
ユエータ。3. A load cell installed on the mirror cell for supporting the mirror, the load cell being mounted in the vicinity of the rear hole of the mirror, and a first slide mechanism joined to the load cell for guiding straightly in the rear hole of the mirror. A first universal joint attached to the slide mechanism, a second universal joint rotatably coupled to the universal joint, and a second universal joint near the mirror cell. A support rod having a counterweight attached to an end thereof, a second slide mechanism that is rotationally coupled to the second universal joint and linearly guides inside the mirror cell, and a spring that supports the slide mechanism and applies a force thereto. In the mirror support actuator composed of the feed mechanism for expanding and contracting the spring, a damping material is integrally provided inside the second slide mechanism, Actuators mirror support, characterized in that to obtain the damping effect of the vibration between the mirror cell which supports the second slide mechanism by Les.
る機構であって、ミラー裏面穴付近に取付けられたロー
ドセル、このロードセルに接合され、上記ミラー裏面穴
内を直進案内する第１のスライド機構、このスライド機
構に取付けられた第１の自在継手、この自在継手に回転
結合され、上記ミラーセル付近に第２の自在継手を有
し、この自在継手に対して上記第１の自在継手と逆側の
端部にカウンタウエイトが取付けられた支持棒、上記第
２の自在継手に回転結合され、上記ミラーセル内を直進
案内する第２のスライド機構、このスライド機構を支持
し、かつこれに力を加えるばね、このばねを伸縮させる
送り機構より構成されるミラーサポート用アクチユエー
タにおいて、上記ばねと上記第２のスライド機構との間
に直列に防振ゴム、ダンパ等の減衰材を設けたことを特
徴とするミラーサポート用アクチユエータ。4. A load cell installed on the mirror cell for supporting the mirror, the load cell being mounted in the vicinity of the rear hole of the mirror, and a first slide mechanism joined to the load cell for guiding straightly in the rear hole of the mirror. A first universal joint attached to the slide mechanism, a second universal joint rotatably coupled to the universal joint, and a second universal joint near the mirror cell. A support rod having a counterweight attached to an end thereof, a second slide mechanism that is rotationally coupled to the second universal joint and linearly guides inside the mirror cell, and a spring that supports the slide mechanism and applies a force thereto. In a mirror support actuator including a feed mechanism that expands and contracts the spring, a vibration damping rubber is provided in series between the spring and the second slide mechanism. Mirror support for actuator, characterized in that a damping material such as damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083161A JPH07119891B2 (en) | 1988-05-19 | 1989-03-30 | Actuator for mirror support |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12421388 | 1988-05-19 | ||
| JP63-124213 | 1988-05-19 | ||
| JP1083161A JPH07119891B2 (en) | 1988-05-19 | 1989-03-30 | Actuator for mirror support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0271221A JPH0271221A (en) | 1990-03-09 |
| JPH07119891B2 true JPH07119891B2 (en) | 1995-12-20 |
Family
ID=26424217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1083161A Expired - Fee Related JPH07119891B2 (en) | 1988-05-19 | 1989-03-30 | Actuator for mirror support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119891B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500170A (en) | 1982-06-14 | 1985-02-19 | Ford Aerospace & Communications Corporation | Gravity and temperature compensating reflector support actuator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3444265A1 (en) * | 1984-12-05 | 1986-06-05 | Fa. Carl Zeiss, 7920 Heidenheim | SUPPORT SYSTEM FOR TELESCOPIC MIRRORS |
| JPS6397911A (en) * | 1986-10-14 | 1988-04-28 | Mitsubishi Electric Corp | Actuator for telescope |
-
1989
- 1989-03-30 JP JP1083161A patent/JPH07119891B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500170A (en) | 1982-06-14 | 1985-02-19 | Ford Aerospace & Communications Corporation | Gravity and temperature compensating reflector support actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0271221A (en) | 1990-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |