JPH0718978B2 - Reflector spider support structure - Google Patents

Reflector spider support structure

Info

Publication number
JPH0718978B2
JPH0718978B2 JP17772487A JP17772487A JPH0718978B2 JP H0718978 B2 JPH0718978 B2 JP H0718978B2 JP 17772487 A JP17772487 A JP 17772487A JP 17772487 A JP17772487 A JP 17772487A JP H0718978 B2 JPH0718978 B2 JP H0718978B2
Authority
JP
Japan
Prior art keywords
reflecting mirror
reflector
support structure
spider
spider support
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
Application number
JP17772487A
Other languages
Japanese (ja)
Other versions
JPS6420514A (en
Inventor
泉 三神
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP17772487A priority Critical patent/JPH0718978B2/en
Publication of JPS6420514A publication Critical patent/JPS6420514A/en
Publication of JPH0718978B2 publication Critical patent/JPH0718978B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は星雲やブラツクホールなどの天体を観測する
分野に用いられる望遠鏡装置、特にその反射鏡スパイダ
支持構造体に関するものである。
The present invention relates to a telescope device used in the field of observing celestial bodies such as nebulae and black holes, and more particularly to a reflector spider support structure thereof.

〔従来の技術〕[Conventional technology]

第4図は一般的な望遠鏡装置を示す斜視図であり、第5
図はその機能を説明するための概略断面図である。図に
おいて、(1)は望遠鏡を載置するための基部構造物
で、自身はAZの矢印方向に垂直軸のまわりに回転可能で
あり、そして望遠鏡をELの矢印方向に水平軸のまわりに
回転可能に担持している。(2)は主反射鏡、(2a)は
主反射鏡(2)に開けられた穴、(3)は主反射鏡
(2)を支持するミラーセル、(5)は副反射鏡、
(6)は副反射鏡(5)を支持する反射鏡スパイダ支持
構造体(以下単にスパイダと称す)、(4)はミラーセ
ル(3)に取り付けられ副反射鏡(5)およびスパイダ
(6)を保持するフレームである。(7)は観測装置、
(8)は例えば天体からの赤外線等の観測信号である。
FIG. 4 is a perspective view showing a general telescope device.
The figure is a schematic cross-sectional view for explaining its function. In the figure, (1) is a base structure for mounting the telescope, which itself can rotate about the vertical axis in the direction of the arrow AZ, and rotates the telescope about the horizontal axis in the direction of the arrow EL. Carry possible. (2) is a main reflecting mirror, (2a) is a hole formed in the main reflecting mirror (2), (3) is a mirror cell for supporting the main reflecting mirror (2), (5) is a sub-reflecting mirror,
(6) is a reflecting mirror spider support structure (hereinafter simply referred to as "spider") that supports the sub-reflecting mirror (5), and (4) is attached to the mirror cell (3) and includes the sub-reflecting mirror (5) and the spider (6). It is a frame to hold. (7) is an observation device,
(8) is an observation signal such as infrared rays from a celestial body.

次に動作について説明する。例えば観測中の天体から届
く観測信号(8)は第5図中の矢印に沿い主反射鏡
(2)に集光される。主反射鏡(2)は観測信号(8)
を副反射鏡(5)に向けて反射させる。その反射光は副
反射鏡(5)で再び反射させられ、主反射鏡(2)の中
心に開けられた穴(2a)を通過し、観測装置(7)に集
光する。第5図にて明らかなように、主反射鏡(2)お
よび副反射鏡(5)は例えばパラボラ、ハイパボラの関
係を持つように鏡面が曲面加工してあるため、例えば観
測装置(7)の上に観測信号(8)の焦点を結ぶように
構成されている。
Next, the operation will be described. For example, the observation signal (8) that arrives from the celestial body under observation is focused on the main reflecting mirror (2) along the arrow in FIG. The main reflector (2) is the observation signal (8)
Is reflected toward the sub-reflecting mirror (5). The reflected light is reflected again by the sub-reflecting mirror (5), passes through the hole (2a) formed in the center of the main reflecting mirror (2), and is focused on the observation device (7). As is clear from FIG. 5, since the main reflecting mirror (2) and the sub-reflecting mirror (5) have curved mirror surfaces so as to have a parabola-hyperbora relationship, for example, the observation device (7) It is configured to focus the observation signal (8) on the top.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記のような従来の望遠鏡装置は次のような欠点があつ
た。第6図および第8図についてそれを詳細に説明す
る。スパイダ(6)は主反射鏡(2)に対向する面(6
a)から自分の温度(ほぼ常温)の雑音赤外線(10)を
輻射し主反射鏡(2)に入射させるため、図の矢印のよ
うに、副反射鏡(5)を介して観測装置(7)にスパイ
ダ(6)の温度の信号を受信させる。一方、天体から到
来する観測信号(8)も、本図では省略するが、当然観
測装置(7)に入る。従つて、スパイダ(6)の発生す
る雑音赤外線(10)は、不用な雑音として信号のS/N比
(信号/ノイズ比)を劣化させる。この劣化率はスパイ
ダ(6)が主反射鏡(2)の鏡面部に投影するスパイダ
(6)の投影面積(6b)と主反射鏡(2)の面積の比に
て表わされる(第8図参照)。従来この面積比をできる
だけ小さくする方向での解決方法が採られてきたが、副
反射鏡(5)やスパイダ(6)の自重を支えるためには
スパイダ(6)の板厚には限界があり、大幅に雑音信号
を取り除くことはできなかつた。
The above-described conventional telescope device has the following drawbacks. It will be described in detail with reference to FIGS. 6 and 8. The spider (6) has a surface (6) facing the main reflecting mirror (2).
In order to radiate the noise infrared ray (10) of its own temperature (almost room temperature) from a) and make it enter the main reflecting mirror (2), the observation device (7) is passed through the sub-reflecting mirror (5) as shown by the arrow in the figure. ) To receive the signal of the temperature of the spider (6). On the other hand, the observation signal (8) coming from the celestial body also enters the observation device (7) although it is omitted in the figure. Therefore, the noise infrared ray (10) generated by the spider (6) deteriorates the S / N ratio (signal / noise ratio) of the signal as unnecessary noise. This deterioration rate is represented by the ratio of the area of the main reflecting mirror (2) to the projected area (6b) of the spider (6) projected by the spider (6) onto the mirror surface of the main reflecting mirror (2) (Fig. 8). reference). Conventionally, there has been adopted a solution to reduce the area ratio as much as possible, but there is a limit to the plate thickness of the spider (6) in order to support the weight of the sub-reflecting mirror (5) and the spider (6). , I couldn't get rid of the noise signal significantly.

この発明は、上記のような問題点を解決するためになさ
れたもので、スパイダ(6)の強さを変えずにスパイダ
(6)の主反射鏡(2)に対向する面(6a′)から発す
る雑音赤外線(10)を軽減したスパイダを得ることを目
的とする。
The present invention has been made to solve the above problems, and the surface (6a ') facing the main reflecting mirror (2) of the spider (6) without changing the strength of the spider (6). The purpose is to obtain a spider that reduces the noise infrared rays (10) emitted from.

また、この発明の別の発明は、スパイダ(6)の発する
雑音赤外線(10)が観測装置(7)に入るのを軽減した
スパイダを得ることを目的とする。
Another object of the present invention is to obtain a spider that reduces the noise infrared rays (10) emitted by the spider (6) from entering the observation device (7).

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係るスパイダ(6)は主反射鏡(2)に対向
する面(6a′)からの輻射を低減するようにこの面を赤
外線領域において高い反射率を持つ材料にて構成したも
のである。
The spider (6) according to the present invention is made of a material having a high reflectance in the infrared region so as to reduce the radiation from the surface (6a ') facing the main reflecting mirror (2). .

また、主反射鏡(2)に対向した面(6a′)から垂直に
出た線が主反射鏡(2)を介して空に発散するように構
成(例えば主反射鏡に対向した面が望遠鏡の光軸に垂直
な面に対しある傾きθを持つように)したものである。
In addition, the line perpendicular to the surface (6a ') facing the main reflecting mirror (2) is diverged into the sky through the main reflecting mirror (2) (for example, the surface facing the main reflecting mirror is a telescope). Of a certain inclination θ with respect to the plane perpendicular to the optical axis).

〔作用〕[Action]

この発明においては、スパイダ(6)の主反射鏡(2)
に対向した面(6a′)を赤外線領域において高い反射率
を持つ材料にて構成しているので、スパイダ(6)の出
す雑音赤外線の割合が低下する。
In the present invention, the main reflecting mirror (2) of the spider (6)
Since the surface (6a ') opposed to is made of a material having a high reflectance in the infrared region, the ratio of noise infrared rays emitted by the spider (6) is reduced.

また、この発明の別の発明においては、スパイダ(6)
のθの傾きを持つ面(6a′)から垂直に強く出た雑音赤
外線は主反射鏡(2)を介し空へ出ていくため、観測装
置(7)に入る割合が更に低下する。
Moreover, in another invention of this invention, a spider (6)
Since the noise infrared rays strongly emitted vertically from the surface (6a ') having the inclination of θ are emitted to the sky through the main reflecting mirror (2), the ratio of entering the observation device (7) is further reduced.

〔実施例〕〔Example〕

第1図および第2図はこの発明の一実施例の要部を示す
図であり、参照符号(2),(5),(6),(7)は
上記従来例に対応するものである。本発明が従来例と異
なる点を説明する方が速いので、異なる点のみ説明す
る。スパイダ(6)の主反射鏡(2)に対向した面(6
a′)が赤外線領域において高い反射率を持つ材料にて
構成されている。この実施例の場合、面(6a′)はアル
ミニウム研磨面になされている。
FIG. 1 and FIG. 2 are views showing an essential part of an embodiment of the present invention, and reference numerals (2), (5), (6) and (7) correspond to the above conventional example. . Since it is quicker to explain the differences of the present invention from the conventional example, only the differences will be described. The surface (6) facing the main reflecting mirror (2) of the spider (6)
a ') is composed of a material having a high reflectance in the infrared region. In the case of this embodiment, the surface (6a ') is an aluminum polished surface.

更にスパイダ(6)の主反射鏡(2)に対向した面(6
a′)から垂直に出た線が主反射鏡(2)を介して空に
発散するようにしてある。この実施例の場合、面(6
a′)は光軸(9)に直角な面からθ度傾けられてい
る。その他は従来例と全く同じである。
Further, the surface (6) facing the main reflecting mirror (2) of the spider (6)
The line perpendicular to a ') diverges into the sky through the main reflecting mirror (2). In this example, the surface (6
a ') is inclined by θ degrees from a plane perpendicular to the optical axis (9). Others are exactly the same as the conventional example.

次にその働きを説明する。まず、一般に物体の表面につ
いて考察すると、反射率(γ)と輻射率(ε)との関係
は、γ+ε=1であるので、スパイダの面(6a′)をア
ルミニウム鏡面にして、反射率(γ)を大きくすること
により、雑音赤外線に輻射率を減らすことができる。か
くして 観測装置への入力信号=〔観測する天体の信号(8)〕 +〔輻射率の低いスパイダの発する雑音赤外線(10)〕 となり、観測装置への雑音は低下する。
Next, its function will be explained. First, considering the surface of an object in general, the relationship between the reflectance (γ) and the emissivity (ε) is γ + ε = 1. Therefore, the surface (6a ′) of the spider is an aluminum mirror surface and the reflectance (γ ), The emissivity of noise infrared rays can be reduced. Thus, the input signal to the observation device = [signal of the celestial object to be observed (8)] + [noise infrared rays (10) emitted by a spider with a low emissivity], and the noise to the observation device is reduced.

次に、θ度の傾きを持つたスパイダ(6)の面(6a′)
について説明する。この面(6a′)から垂直に主として
出た雑音赤外線(10)は光軸(9)に平行に主反射鏡
(2)に入射せず、従つて副反射鏡(5)を介して空へ
出ていく。しかし面(6a′)の傾きにより、観測装置
(7)は観測中の空から主反射鏡(2)を介して空の温
度の信号(8′)を受ける。この状態を第1図に示して
いる。従つて、観測装置(7)は次のような信号を受け
ることになる。
Next, the surface (6a ') of the spider (6) having an inclination of θ degrees
Will be described. The noise infrared ray (10) mainly emitted vertically from this surface (6a ') does not enter the main reflecting mirror (2) in parallel with the optical axis (9), and accordingly goes to the sky through the sub reflecting mirror (5). to go out. However, due to the inclination of the surface (6a '), the observation device (7) receives the sky temperature signal (8') from the sky under observation via the main reflecting mirror (2). This state is shown in FIG. Therefore, the observation device (7) receives the following signals.

観測装置への入力信号=〔観測する天体の信号(8)〕 +〔スパイダで反射される空の温度の信号(8′)〕 +〔スパイダの面から斜めに少し出た雑音赤外線(1
0)〕 である。これに対し、従来では 観測装置への入力信号=〔観測する天体の信号(8)〕 +〔スパイダの面から垂直に主として出る雑音赤外線
(10)〕 である。
Input signal to the observation device = [Signal of the celestial object to be observed (8)] + [Signal of the temperature of the sky reflected by the spider (8 ')] + [Noise infrared rays (1
0)]. On the other hand, in the past, the input signal to the observation device = [the signal of the celestial object to be observed (8)] + [noise infrared rays (10) mainly emitted vertically from the plane of the spider].

これらを詳しく説明すると、第2図を参照して、雑音赤
外線(10)は面(6a′)から主として垂直に出るが、こ
れは光軸(9)に平行に主反射鏡(2)に入射せず、従
つて副反射鏡(5)を介して観測装置(7)に入らず空
へ出ていく。これに対し面(6a′)から斜めには雑音赤
外線は少ししか出ず、これのみが観測装置に入る。従来
の場合、第6図を参照して、面(6a)から垂直に主とし
て出た雑音赤外線(10)は光軸(9)に平行に主反射鏡
(2)に入射するので副反射鏡(5)を介して観測装置
(7)に入り、逆に面(6a)から斜めに少し出た雑音赤
外線が空に出ていく。
Explaining these in detail, referring to FIG. 2, the noise infrared ray (10) emerges from the surface (6a ′) mainly perpendicularly, and this is incident on the main reflecting mirror (2) parallel to the optical axis (9). Instead, it does not enter the observation device (7) via the sub-reflecting mirror (5) and goes out into the sky. On the other hand, a small amount of noise infrared rays are emitted obliquely from the surface (6a ') and only this enters the observation device. In the conventional case, referring to FIG. 6, since the noise infrared ray (10) mainly emitted vertically from the surface (6a) is incident on the main reflecting mirror (2) parallel to the optical axis (9), the sub-reflecting mirror ( The noise infrared rays, which came out a little diagonally from the surface (6a), go out into the sky through the observation device (7) via 5).

さて、これらを比較して、このうち空の温度の信号
(8′)は、本発明の如きスパイダの面で反射されて入
つてくる分増えても元々弱い(常温よりはるかに温度が
低いため)ものである。これに対し観測装置に近いスパ
イダからの雑音赤外線は影響が大きく、垂直に主として
出る雑音赤外線を斜めに少ししか出ない雑音赤外線に代
えることにより雑音率を低めることができ、前述のアル
ミニウム鏡面と相まつて雑音率を大幅に低めるのであ
る。
Now, comparing these, the sky temperature signal (8 ') is originally weak even if it increases by the amount reflected by the surface of the spider as in the present invention (because the temperature is much lower than room temperature). ). On the other hand, noise infrared rays from a spider close to the observation device have a great influence, and the noise rate can be lowered by replacing the noise infrared rays that mainly come out vertically with the noise infrared rays that come out only a little at an angle, and it is possible to reduce the noise ratio. The noise rate is greatly reduced.

なお上記実施例では、副反射鏡(5)を支持するスパイ
ダ(6)の面(6a′)に傾きθを設ける場合を示した
が、第3鏡支持スパイダ(図示は省略)など、望遠鏡の
光学系内におかれるスパイダには総て同じ対策が適用で
き、同等の効果が得られる。
In the above embodiment, the surface (6a ') of the spider (6) supporting the sub-reflecting mirror (5) is provided with the inclination θ, but it is not necessary for a telescope such as a third mirror supporting spider (not shown). The same countermeasure can be applied to all spiders placed in the optical system, and the same effect can be obtained.

また第3図に示すように、スパイダの面(6a′)は必ず
しも一平面でなくとも、図中のように対称面になつてい
ても良く、また曲面になつていても良い。要は主反射鏡
を介して空へ発散するようになつていさえすれば同じ効
果が得られる。
Further, as shown in FIG. 3, the surface (6a ') of the spider does not necessarily have to be one plane, but may be a symmetric surface as shown in the drawing, or may be a curved surface. In short, the same effect can be obtained as long as it diverges into the sky through the main reflecting mirror.

〔発明の効果〕〔The invention's effect〕

この発明は以上説明したとおり、スパイダの主反射鏡に
対向した面(6a′)が赤外線領域において高い反射率を
持つ材料にて構成されているため、輻射率を低減し観測
装置(7)はスパイダから受ける雑音が減り、高いS/N
を得ることができるという効果がある。
As described above, since the surface (6a ') of the spider facing the main reflecting mirror is made of a material having a high reflectance in the infrared region as described above, the emissivity is reduced and the observation device (7) is Higher S / N with less noise received from spiders
There is an effect that can be obtained.

また、この発明の別の発明はスパイダの面(6a′)から
垂直に出た強い輻射線が主反射鏡を介して空に向かつて
発散するため、観測装置(7)はスパイダから受ける雑
音が減り、より高いS/Nを得ることができるという効果
がある。
Further, according to another invention of the present invention, strong radiation emitted vertically from the surface (6a ') of the spider diverges toward the sky through the main reflecting mirror, so that the observation device (7) receives noise from the spider. There is an effect that it can be reduced and a higher S / N can be obtained.

【図面の簡単な説明】[Brief description of drawings]

第1図はこの発明の一実施例によるスパイダを有する望
遠鏡の光学系を示す図、第2図は第1図のスパイダの右
側面を拡大して示す図、第3図はこの発明による他の実
施例によるスパイダの右側面を拡大して示す図、第4図
はスパイダを有する一般的な望遠鏡装置を示す斜視図、
第5図はその光学系を示す図、第6図は従来のスパイダ
を有する望遠鏡の光学系を示す図、第7図は第6図のス
パイダの右側面を拡大して示す図、第8図はスパイダの
主反射鏡に占める投影面積を示す図である。 図において(1)は基部構造物、(2)は主反射鏡、
(3)はミラーセル、(4)はフレーム、(5)は副反
射鏡、(6)はスパイダ、(6a′)はスパイダ(6)の
主反射鏡(2)に対向する面、(7)は観測装置、
(8)は観測信号、(8′)は空の温度の信号、(9)
は光軸、(10)は雑音赤外線である。 なお、各図中同一符号は同一または相当部分を示す。
FIG. 1 is a view showing an optical system of a telescope having a spider according to an embodiment of the present invention, FIG. 2 is an enlarged view of a right side surface of the spider of FIG. 1, and FIG. 3 is another view according to the present invention. The figure which expands and shows the right side of the spider by an Example, FIG. 4 is a perspective view which shows the general telescope apparatus which has a spider,
5 is a view showing the optical system, FIG. 6 is a view showing an optical system of a telescope having a conventional spider, FIG. 7 is an enlarged view showing the right side surface of the spider of FIG. 6, and FIG. FIG. 3 is a diagram showing a projected area occupied by a main reflecting mirror of a spider. In the figure, (1) is a base structure, (2) is a main reflector,
(3) is a mirror cell, (4) is a frame, (5) is a sub-reflecting mirror, (6) is a spider, (6a ') is a surface facing the main reflecting mirror (2) of the spider (6), (7) Is an observation device,
(8) is the observation signal, (8 ') is the sky temperature signal, (9)
Is the optical axis, and (10) is noise infrared. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】赤外線領域の光を集光し反射させる主反射
鏡、この主反射鏡にて反射された光を集光し観測装置に
向けて反射させる主反射鏡に対向する副反射鏡、および
この副反射鏡にて反射された光を観測する観測装置を備
えた望遠鏡装置に使用される副反射鏡を支持する反射鏡
スパイダ支持構造体において、この反射鏡スパイダ支持
構造体の主反射鏡に対向した面が赤外線領域において高
い反射率を持つ材料にて構成されていることを特徴とす
る反射鏡スパイダ支持構造体。
1. A main reflecting mirror that collects and reflects light in the infrared region, and a sub-reflecting mirror that faces the main reflecting mirror that collects the light reflected by this main reflecting mirror and reflects it toward an observation device. And a reflector spider support structure for supporting a sub-reflector used in a telescope device equipped with an observation device for observing light reflected by the sub-reflector, wherein the main reflector of the reflector spider support structure A reflecting mirror spider support structure, characterized in that the surface facing to is composed of a material having a high reflectance in the infrared region.
【請求項2】前記の反射鏡スパイダ支持構造体の主反射
鏡に対向した面をアルミニウム研磨面とした特許請求の
範囲第1項記載の反射鏡スパイダ支持構造体。
2. The reflector spider support structure according to claim 1, wherein the surface of the reflector spider support structure facing the main reflector is an aluminum polished surface.
【請求項3】赤外線領域の光を集光し反射させる主反射
鏡、この主反射鏡にて反射された光を集光し観測装置に
向けて反射させる主反射鏡に対向する副反射鏡、および
この副反射鏡にて反射された光を観測する観測装置を備
えた望遠鏡装置に使用される副反射鏡を支持する反射鏡
スパイダ支持構造体において、この反射鏡スパイダ支持
構造体の主反射鏡に対向した面が赤外線領域において高
い反射率を持つ材料にて構成されており、更に前記の反
射鏡スパイダ支持構造体の主反射鏡に対向した面から垂
直に出た線が主反射鏡を介して空に発散するようにした
ことを特徴とする反射鏡スパイダ支持構造体。
3. A main reflecting mirror that collects and reflects light in the infrared region, and a sub-reflecting mirror that faces the main reflecting mirror that collects the light reflected by the main reflecting mirror and reflects it toward the observation device. And a reflector spider support structure for supporting a sub-reflector used in a telescope device equipped with an observation device for observing light reflected by the sub-reflector, wherein the main reflector of the reflector spider support structure The surface facing to is composed of a material having a high reflectance in the infrared region, and the line perpendicular to the surface facing the main reflecting mirror of the above-mentioned reflecting mirror spider support structure passes through the main reflecting mirror. A reflector mirror spider support structure characterized by diverging into the sky.
【請求項4】前記の反射鏡スパイダ支持構造体の主反射
鏡に対向した面が望遠鏡の光軸に垂直な面に対しある傾
きθを持つようにしかくしてそこから垂直に出た線が主
反射鏡を介して空に発散するようにした特許請求の範囲
第3項記載の反射鏡スパイダ支持構造体。
4. The surface of the reflecting mirror spider support structure facing the main reflecting mirror has a certain inclination θ with respect to the plane perpendicular to the optical axis of the telescope, and the line emerging perpendicularly therefrom is the main reflecting light. The reflecting mirror spider support structure according to claim 3, wherein the reflecting mirror spider support structure diverges into the sky through a mirror.
【請求項5】前記の反射鏡スパイダ支持構造体の主反射
鏡に対向した面が湾曲しており、かくしてそこから垂直
に出た線が主反射鏡を介して空に発散するようにした特
許請求の範囲第3項記載の反射鏡スパイダ支持構造体。
5. A patent in which the surface of the reflecting mirror spider support structure facing the main reflecting mirror is curved, and thus the line perpendicularly extending therefrom diverges into the sky through the main reflecting mirror. The reflector spider support structure according to claim 3.
JP17772487A 1987-07-15 1987-07-15 Reflector spider support structure Expired - Fee Related JPH0718978B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17772487A JPH0718978B2 (en) 1987-07-15 1987-07-15 Reflector spider support structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17772487A JPH0718978B2 (en) 1987-07-15 1987-07-15 Reflector spider support structure

Publications (2)

Publication Number Publication Date
JPS6420514A JPS6420514A (en) 1989-01-24
JPH0718978B2 true JPH0718978B2 (en) 1995-03-06

Family

ID=16036003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17772487A Expired - Fee Related JPH0718978B2 (en) 1987-07-15 1987-07-15 Reflector spider support structure

Country Status (1)

Country Link
JP (1) JPH0718978B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07107579B2 (en) * 1989-11-17 1995-11-15 三菱電機株式会社 Reflective telescope device
JP2804811B2 (en) * 1990-01-24 1998-09-30 三菱電機株式会社 Telescope structure
EP1770447B1 (en) 2004-07-16 2011-03-16 Mitsubishi Chemical Corporation Electrophotographic photosensitive body
JP5534490B2 (en) * 2011-03-16 2014-07-02 株式会社ニコン Infrared imaging device

Also Published As

Publication number Publication date
JPS6420514A (en) 1989-01-24

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