JPS60159703A - Concave reflection mirror - Google Patents

Concave reflection mirror

Info

Publication number
JPS60159703A
JPS60159703A JP1450684A JP1450684A JPS60159703A JP S60159703 A JPS60159703 A JP S60159703A JP 1450684 A JP1450684 A JP 1450684A JP 1450684 A JP1450684 A JP 1450684A JP S60159703 A JPS60159703 A JP S60159703A
Authority
JP
Japan
Prior art keywords
drum
film
aperture
nozzle
constitution
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.)
Pending
Application number
JP1450684A
Other languages
Japanese (ja)
Inventor
Takao Shimomura
下村　崇雄
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP1450684A priority Critical patent/JPS60159703A/en
Publication of JPS60159703A publication Critical patent/JPS60159703A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/10—Mirrors with curved faces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

PURPOSE:To make constitution simpler, cost lower and performance higher by sticking tightly a reflecting film which is soft and has a metallic gloss with the metallic gloss surface on the outside to the aperture of a drum-shaped vessel having a circular aperture and evacuating the inside of the vessel. CONSTITUTION:An evacuating nozzle 2 is provided to a drum 1 for evacuation consisting of a rigid resin, metal, etc. and having an aperture. A soft reflecting film 3 is attached into the aperture by means of a lock ring 4 and bolts 5 in using a gasket or the like in such a way that airtightness is maintained in the drum. When the air in the drum is gradually evacuated through the nozzle 2, the film 3 is sucked to the inside of the drum to form a concave face. If the degree of evacuation is adjusted in this stage, the position of the focus 6 of the concave reflecting mirror can be adjusted within the permissible range of the elongation of the film. After the inside of the drum is evacuated until the prescribed focus is obtd., the valve for the nozzle 2 is closed to maintain the reduced pressure in the drum. The convave face formed to the film 3 in such a way is used as a reflecting mirror, by which the constitution is simplified, the cost is reduced and the performance is improved.

Description

【発明の詳細な説明】 本発明は凹面反射鏡に関するものである。[Detailed description of the invention] The present invention relates to a concave reflecting mirror.

従来から、太陽光の集光用やマイクロウェーブのパラボ
ラアンテナ等に凹面反射鏡が使用されているが、これら
は一般的に直径も大きく、金属製のものが普通であり、
又曲面も成る程度以上の精度を必要とし、余り簡易なも
のではない。Concave reflectors have traditionally been used for solar condensation and microwave parabolic antennas, but these mirrors are generally large in diameter and made of metal.
Moreover, it requires a level of precision higher than that required to form curved surfaces, and is not very simple.

しかし、近年のクリーンエネルギー、省エネルギー指向
に於ける太陽熱利用、人工衛星を利用したマイクロウェ
ーブ通信の一般への普及化等がはかられ、より簡易で、
低コスト且つ性能の良い反射鏡を必要とされている。However, in recent years, clean energy, the use of solar heat for energy saving purposes, and the widespread use of microwave communication using artificial satellites have made it easier and easier to use.
There is a need for low-cost, high-performance reflectors.

本発明者は、かかる状況に鑑み鋭意検討を行った結果、
本発明を完成したものである。As a result of intensive study in view of the above situation, the inventor of the present invention found that
This completes the present invention.

即ち、本発明の凹面反射鏡は、円形の開口を有するドラ
ム状の容器又は枠の該開口部に柔軟で且つ金属光沢面を
有する反射膜を金属光沢面を外側にして密着して張り、
容器内を減圧にすることを特徴とする凹面反射鏡である
。That is, the concave reflective mirror of the present invention includes a drum-shaped container or frame having a circular opening, and a reflective film having a flexible metallic luster surface is tightly attached to the opening of the drum-shaped container or frame with the metallic lustrous surface facing outward.
This is a concave reflecting mirror that is characterized by reducing the pressure inside the container.

以下、図面により発明の詳細な説明する。Hereinafter, the invention will be explained in detail with reference to the drawings.

硬質の樹脂、金属等による開口を有する減圧用ドラム１
に減圧ノヅル２を設け、開口部に反射膜３をドラム内が
気密となる様ガスケット等を使用しで固定リング４及び
ボルト５で取りつける。Decompression drum 1 having an opening made of hard resin, metal, etc.
A decompression nozzle 2 is provided in the drum, and a reflective film 3 is attached to the opening with a fixing ring 4 and bolts 5 using a gasket or the like so that the inside of the drum is airtight.

次に減圧ノヅル２よりドラム内の空気を真空ポンプ等を
使用して徐々に抜き出すと、反射膜３はドラムの内側に
吸引され、凹面を形成する。このとき、減圧度を調節す
ることにより、膜の延びの許容範囲内で凹面反射鏡の焦
点６の位置の調整が出来る。Next, when the air inside the drum is gradually extracted from the decompression nozzle 2 using a vacuum pump or the like, the reflective film 3 is attracted to the inside of the drum and forms a concave surface. At this time, by adjusting the degree of reduced pressure, the position of the focal point 6 of the concave reflecting mirror can be adjusted within the allowable range of the film extension.

所定の焦点になるまで減圧した後、減圧ノヅル２の弁を
閉じて、ドラム内の減圧を保持し、反射膜３に形成した
凹面を反射鏡として使用する。After reducing the pressure to a predetermined focal point, the valve of the pressure reducing nozzle 2 is closed to maintain the reduced pressure inside the drum, and the concave surface formed on the reflective film 3 is used as a reflecting mirror.

本発明の反射鏡は円形の開口に均一な反射膜を使用した
場合はほぼ完全な球面反射鏡が得られる。In the reflecting mirror of the present invention, when a uniform reflecting film is used in the circular aperture, an almost perfect spherical reflecting mirror can be obtained.

本発明において反射膜としてはポリプロピレン、ポリエ
ステル、ナイロン等のアルミ蒸着フィルムが好適に使用
できる。In the present invention, aluminum vapor-deposited films of polypropylene, polyester, nylon, etc. can be suitably used as the reflective film.

減圧ドラムの材質としては硬質の樹脂金属等を適宜使用
すればよく、特に樹脂、アルミニウム、チタン等の軽い
金属を使用した場合反射鏡全体は非常に軽量なものとな
り、移動用として極めて有用であり、又コスト的にも非
常に有利である。As the material for the vacuum drum, a hard resin metal may be used as appropriate. In particular, if a light metal such as resin, aluminum, or titanium is used, the entire reflector will be extremely lightweight, making it extremely useful for transportation. Also, it is very advantageous in terms of cost.

又、太陽自動追尾装置等と組合わせる場合も機械的な負
荷は極めて軽度なものとなる。Furthermore, when combined with an automatic solar tracking device or the like, the mechanical load is extremely light.

以下、実施例をあげ、本発明を説明する。The present invention will be described below with reference to Examples.

実施例１ 直径１．０００　ｘｍの硬質塩ビ製の図面の如き減圧ド
ラムにポリプロピレンのアルミ蒸着フィルムを張り、小
型の真空ポンプを使用してドラム内部を減圧とした。こ
のとき形成した凹面の焦点距離は約３００ＷＩｔであっ
た。この凹面に太陽光を反射させたとき、焦点部に置い
た黒体の温度は１０００°Ｃ以上となった。Example 1 A polypropylene aluminum vapor-deposited film was placed on a vacuum drum made of hard PVC with a diameter of 1.000 x m as shown in the drawing, and the pressure inside the drum was reduced using a small vacuum pump. The focal length of the concave surface formed at this time was approximately 300 WIt. When sunlight was reflected on this concave surface, the temperature of the blackbody placed at the focal point was over 1000°C.

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

図面は本発明に係る凹面反射鏡の１例の断面図である。 １、減圧ドラム　５．固定ボルト ２、減圧ノズル　６．焦　点 ３、反射膜　７．入射光 ４、　固定リング 特許出願人 三井東圧化学株式会社 The drawing is a sectional view of an example of a concave reflecting mirror according to the present invention. 1. Decompression drum 5. fixing bolt 2. Decompression nozzle 6. focus 3. Reflective film 7. incident light 4. Fixed ring patent applicant Mitsui Toatsu Chemical Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] １、円形の開口を有するドラム状の容器又は枠の該開口
部に柔軟で且つ金属光沢面を有する反射膜を金属光沢面
を外側にして密着して張り、その容器内を減圧にするこ
とを特徴とする凹面反射鏡1. Apply a reflective film that is flexible and has a metallic luster to the opening of a drum-shaped container or frame having a circular opening, with the metallic lustrous surface facing outward, and reduce the pressure inside the container. Characteristic concave reflector
JP1450684A 1984-01-31 1984-01-31 Concave reflection mirror Pending JPS60159703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1450684A JPS60159703A (en) 1984-01-31 1984-01-31 Concave reflection mirror

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1450684A JPS60159703A (en) 1984-01-31 1984-01-31 Concave reflection mirror

Publications (1)

Publication Number Publication Date
JPS60159703A true JPS60159703A (en) 1985-08-21

Family

ID=11862949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1450684A Pending JPS60159703A (en) 1984-01-31 1984-01-31 Concave reflection mirror

Country Status (1)

Country Link
JP (1) JPS60159703A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038744A1 (en) * 1995-06-01 1996-12-05 Joshua David Silver An optical apparatus and method
GB2316767A (en) * 1995-06-01 1998-03-04 Joshua David Silver An optical apparatus and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975153A (en) * 1972-11-20 1974-07-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975153A (en) * 1972-11-20 1974-07-19

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038744A1 (en) * 1995-06-01 1996-12-05 Joshua David Silver An optical apparatus and method
GB2316767A (en) * 1995-06-01 1998-03-04 Joshua David Silver An optical apparatus and method
EA000629B1 (en) * 1995-06-01 1999-12-29 Джошуа Дейвид Силвер An optical apparatus and method adjusting thereof
AP908A (en) * 1995-06-01 2000-12-04 David Joshua Silver An optical apparatus and method.

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