JPS5880614A - Pin hole forming method and its device - Google Patents
Pin hole forming method and its deviceInfo
- Publication number
- JPS5880614A JPS5880614A JP17908981A JP17908981A JPS5880614A JP S5880614 A JPS5880614 A JP S5880614A JP 17908981 A JP17908981 A JP 17908981A JP 17908981 A JP17908981 A JP 17908981A JP S5880614 A JPS5880614 A JP S5880614A
- Authority
- JP
- Japan
- Prior art keywords
- shielding
- pin hole
- gap space
- pinhole
- shielding substance
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/46—Systems using spatial filters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、レザービーム等の集光に際して用いられる空
間周波数フィルターのピンホール形感方法及びその装置
に関するものであって、ピンホールの形成を極めて簡単
且つ正確に達成し得るようにすることを目的とするもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pinhole forming method and device for a spatial frequency filter used for condensing a laser beam, etc. The present invention relates to a method and apparatus for forming a pinhole in a spatial frequency filter used for condensing a laser beam, etc. The purpose is to obtain.
従来よりこの種フィルターに於けるピンホールの形成は
、銅箔にフォトエツチングを施すなり。Traditionally, pinholes in this type of filter are formed by photo-etching the copper foil.
機械的に穿設するなシして行なっていた。This was done without mechanical drilling.
しかしながらこのピンホールに、用途に応じて数百ミク
ロ゛ンから数ミクロンに至るまでの各種直径が要求され
、かように小さい直径のピンホール。However, pinholes with such small diameters are required to have various diameters, from several hundred microns to several microns, depending on the application.
を形成することは極めて困難にして手間のかかる作業で
ある。It is an extremely difficult and time-consuming task to form.
この場合１例−えば前述の銅箔に対するエツチングでは
かなり正確に小さなピンホールを形成することが出来る
のであるが９本来このピンホール部分は′ｆ７ Ｅ’
−Ａ等””最も集光さｔ″６８６８分７ら極めて高いエ
ネルギーの下に高熱が生じ、前記銅箔を溶融さｉそしま
い、ピンホールが所望の直径以上となってしまう虞れが
多分にあった。In this case, for example, by etching the copper foil mentioned above, it is possible to form a small pinhole quite accurately, but originally this pinhole part is 'f7 E'.
- There is a possibility that high heat will be generated under extremely high energy from the most concentrated light such as A, melting the copper foil and causing the pinhole to have a diameter larger than the desired diameter. It was there.
本発明は、上述した従来の欠点不都合に鑑みて開発され
たピンホール形成方法及びその装置に関するものであっ
て１球体１円柱体等の断面円形状の複数の運勢物を隣接
配置してピンホールを形成するものであり、以下にその
実施例を図面に従って説明する。The present invention relates to a pinhole forming method and an apparatus therefor developed in view of the above-mentioned conventional drawbacks. Examples thereof will be described below with reference to the drawings.
空間崗波数フィルターに於て、ここでの光線の運勢物１
としては９例えば鋼製の球体、半球体。In the spatial wavenumber filter, the fortune object of the ray here 1
For example, a steel sphere or hemisphere.
短円柱体９円板、半球体をスライスして一面を平担面と
すると共に他面を円滑湾曲面とした物体等の如く、断面
が円形状となったものが用いられる。Those having a circular cross section are used, such as a short cylindrical body (9 disks), an object obtained by slicing a hemisphere so that one side has a flat surface and the other side has a smoothly curved surface.
そしてとの迩弊物１を、少なくとも三個以上の複数個用
意し、この複数の運勢物１・・・を所定の仮想される平
面上に、相互に周端が隣接する形態で配置して運勢物群
Ａを形成する。A plurality of at least three or more lucky objects 1 are prepared, and the plurality of lucky objects 1 are arranged on a predetermined imaginary plane so that their circumferential edges are adjacent to each other. Form a fortune object group A.
かように運勢物群Ａを配置すると、各運勢物１・・・の
夫々の隣接点間に於ける各周面部１ａによって。When the lucky objects group A is arranged in this way, each peripheral surface portion 1a between adjacent points of each lucky object 1...
間隙空間Ｓが凹側形成されることにな夛、この間隙空間
Ｓをもつフピンホールとするのである。Since the gap space S is formed on the concave side, the pinhole having this gap space S is formed.
第１図、第２図は、このピンホール形成方法の具体的な
構成を示すものにして、所定の光線が走行する短円短形
状の保持筒２内に前記運勢物群Ａを保持筒２の軸方向に
直交する形態で嵌め込み固定したものである。FIGS. 1 and 2 show a specific configuration of this pinhole forming method. It is fitted and fixed in a form perpendicular to the axial direction.
図示例では、真円となった円板をもって運勢物１とし、
この運勢物１を三個組み合せて夫々の周端を相互に隣接
しあって三巴状に配置して遮弊物群Ａを構成し、各運勢
物１・・・の周面の一部が保持筒２内面に接する形態で
嵌め込むものであり、従って保持筒２の軸芯に前記ピン
ホールたる間隙空間Ｓが形成される。In the illustrated example, a perfect circle disc is used as a fortune object 1,
Three of these fortune objects 1 are combined and arranged in a three-way shape with their circumferential ends adjacent to each other to form a blocking object group A, and a part of the circumferential surface of each fortune object 1... It is fitted into the holding cylinder 2 so as to be in contact with the inner surface of the holding cylinder 2, so that the gap space S, which is the pinhole, is formed at the axis of the holding cylinder 2.
そして図示例では更に、上記運勢物群Ａに対″して同一
構成の第二の運勢物群Ａ’ （図面では二点鎖線にて示
す）を、保持筒２の周方向に６０度の角度で回動位置ず
れさせて重ね合せである。In the illustrated example, a second fortune object group A' (indicated by a two-dot chain line in the drawing) having the same configuration as the fortune object group A is placed at an angle of 60 degrees in the circumferential direction of the holding cylinder 2. They are superimposed by shifting their rotational positions.
この結果、一方の運勢物群の間隙空間Ｓの隅部は、他方
の運勢物群の対向する運勢物の周端部によって相互に遮
弊され、各運勢物群Ａ、Ａ’によって形成される間隙空
間Ｓ′は更に小さく且つ真円に近づく、ことになる。As a result, the corners of the gap S of one group of lucky objects are mutually blocked by the peripheral edges of the opposing lucky objects of the other group of lucky objects, and are formed by each group of lucky objects A and A'. The gap space S' becomes smaller and closer to a perfect circle.
従って極めて薄い円板−状の運勢物１によって遮弊物群
Ａを構成し、且つこの運勢物群Ａｔ−多数組用意して叙
上の如く相互に位置ずれさせながら重ね合せれば、−そ
−こ−に形成される相乗的な間−隙空゛間Ｓ′は、直径
の小さい極めて円に近い形状となる。Therefore, if the blocking object group A is constituted by extremely thin disc-shaped lucky objects 1, and a large number of lucky objects At are prepared and stacked one on top of the other while shifting their positions as described above, - The synergistic gap S' thus formed has a shape very close to a circle with a small diameter.
現在市販されている鋼球の最小のものは直径０゜５ミリ
程度であるが、この鋼球を用いて上記の如き装置を構成
した場合直径４０ミクロン程度の間隙空間Ｓを得ること
が可能であり、更に前記鋼球をスライスすることによっ
て直径を小さくすれば。The smallest steel ball currently on the market has a diameter of about 0.5 mm, but if the above-mentioned device is constructed using this steel ball, it is possible to obtain a gap space S of about 40 microns in diameter. Yes, if you further reduce the diameter by slicing the steel ball.
直径数ミクロン単位の間隙空間Ｓｆ、得ることも不可能
では、ない。It is not impossible to obtain a gap space Sf with a diameter of several microns.
上記実施例で、は、三個の運勢物１によって運勢物群Ａ
を構成したが、更に多くの運勢物ｌを用いてもよく、こ
の場合には間隙空間Ｓが運勢物１の数量に応じて大とな
シ、従って用途によって利用されることになるのであろ
うけれども、運勢物１の数量が−くなれば間隙空間Ｓは
それｋけ真円に近づくことになる。In the above example, is the fortune object group A by the three fortune objects 1.
Although more lucky objects 1 may be used, in this case, the gap space S will increase depending on the number of lucky objects 1, and therefore it will be used depending on the purpose. However, if the quantity of fortune objects 1 becomes negative, the gap space S will become closer to a perfect circle.
ま”た、運勢物１の断面形状は真円である必要はなく、
−組み合せ形態が実現し得る限りでは例えば楕円形状で
あってもよい。Also, the cross-sectional shape of fortune object 1 does not have to be a perfect circle,
- For example, it may have an elliptical shape, as long as the combined configuration is possible.
更に実際の成形に際しては、運勢物１は単なる球体状の
ものが加工する必要もな６ので最も簡単であるが９局面
部１ａに於ける乱反射の発生を極力排除する必要がある
のであれば、半球、或いは該半球を更にスライスして一
面を平担面とすると共に他面を円滑湾曲面とした物体（
第３図はこの物体をも・つて運勢物群Ａを構成し、且つ
運勢物１の平担１面を相互に重ね合せで一対の遮弊物群
Ａ、 Ａ’を組み合せた実施例傘示している。）、若く
は極めて薄い円板を用いることになろう。Furthermore, in actual molding, the fortune object 1 is the simplest because it does not need to be processed into a simple spherical object, but if it is necessary to eliminate as much as possible the occurrence of diffused reflection in the curved part 1a, A hemisphere, or an object obtained by slicing the hemisphere so that one side is flat and the other side is a smooth curved surface (
Figure 3 shows an example umbrella in which this object is used to form a fortune object group A, and a pair of obstruction groups A and A' are combined by overlapping one flat surface of the fortune object 1. ing. ), an extremely thin disc will probably be used in the young.
本発明は以上説明したような構成となっている。The present invention has the configuration as described above.
従って厳密な真円で弗ることを必要としないピン朶−ル
にあって９本発明によれば、極めて簡単にピンホールを
形成することが出来、従来の銅箔による場合の如く集光
された熱によって溶融してピ・ンホールの径が大きくな
って川をなさなくな”るといったことになく、む乙ろ鋼
製の運勢物によって放熱効果が期待出来、安価に正確に
ピンホール全形成し得る等１本発明は優れた作用効果を
奏する有効なものである。Therefore, in the case of a pinhole that does not need to be opened in a strict perfect circle, the present invention makes it possible to form a pinhole extremely easily, and it is possible to form a pinhole in a way that is not condensed as in the case of conventional copper foil. Instead of melting due to the heat generated and causing the diameter of the pinhole to become large and no longer forming a river, you can expect a heat dissipation effect by using the Muoturo steel luck object, and it is possible to form the entire pinhole accurately at a low cost. The present invention is effective and has excellent effects.
第１図は本発明に係る装置の正面図、第２図は第１図に
於けるＸ−Ｘ線縦断面図、第３図はは他の実施例を示す
縦断面図である。
符号の説明
１・・・運勢物、 ｌａ・・・周面部、２・・・保持筒
、ＡＡ′・・・運勢物群、Ｓ・・・運勢物群によって形
成される間隙空間、Ｓ′・・・複数の運勢物群によって
形成される間隙空間。
才２図
、−１
−ｓ’FIG. 1 is a front view of the apparatus according to the present invention, FIG. 2 is a longitudinal sectional view taken along the line X--X in FIG. 1, and FIG. 3 is a longitudinal sectional view showing another embodiment. Explanation of symbols 1... Luck object, la... Peripheral part, 2... Holding tube, AA'... Luck object group, S... Gap space formed by the luck object group, S'. ...An interstitial space formed by multiple groups of fortune objects. Figure 2, -1 -s'
Claims (3)
１円板等の断面円形状の遮弊物を、少なくとも三個以上
相互に周端を隣接して配置し、各遮弊物によって囲繞形
成される間隙空間をピンホールとすることを特徴とする
ピンホール形成方法。(1) In a spatial frequency filter, at least three obstructions each having a circular cross section, such as one sphere, one short cylinder, and one disk, are arranged with their peripheral edges adjacent to each other, and each obstruction A method for forming a pinhole, characterized in that a gap space to be surrounded is formed as a pinhole.
１円板等の断面円形状の遮弊物を、少なくとも三個以上
相互に周端を隣接して配置し、各遮弊物によって囲繞さ
れた空間にピンホールを形成した遮弊物群を、所定の光
線を走行させる筒形状の保持筒内に、嵌−め込み固定し
て成るピンホール装置。(2) In the spatial frequency filter, at least three obstructions each having a circular cross section, such as one sphere, one short cylinder, and one disk, are arranged with their peripheral edges adjacent to each other, and each obstruction A pinhole device in which a group of shielding objects with pinholes formed in a surrounding space are fitted and fixed into a cylindrical holding cylinder through which a predetermined beam of light travels.
置ず糺させて重ね合せて成る特許請求の範囲（２） Ｋ
記載のピンホール装置。−(3) Claim (2) K in which a plurality of blocking objects are stacked and glued without being positioned relative to each other in the circumferential direction of the holding cylinder.K
Pinhole device as described. −
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17908981A JPS5880614A (en) | 1981-11-10 | 1981-11-10 | Pin hole forming method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17908981A JPS5880614A (en) | 1981-11-10 | 1981-11-10 | Pin hole forming method and its device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5880614A true JPS5880614A (en) | 1983-05-14 |
Family
ID=16059874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17908981A Pending JPS5880614A (en) | 1981-11-10 | 1981-11-10 | Pin hole forming method and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5880614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880294A (en) * | 1987-02-27 | 1989-11-14 | Stitchting Voor De Techische Wetenschappen | Continuously variable microdiaphragm |
-
1981
- 1981-11-10 JP JP17908981A patent/JPS5880614A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4880294A (en) * | 1987-02-27 | 1989-11-14 | Stitchting Voor De Techische Wetenschappen | Continuously variable microdiaphragm |
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