JPH0511475Y2 - - Google Patents
Info
- Publication number
- JPH0511475Y2 JPH0511475Y2 JP10472186U JP10472186U JPH0511475Y2 JP H0511475 Y2 JPH0511475 Y2 JP H0511475Y2 JP 10472186 U JP10472186 U JP 10472186U JP 10472186 U JP10472186 U JP 10472186U JP H0511475 Y2 JPH0511475 Y2 JP H0511475Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- lens
- outer periphery
- brazed
- tip
- 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 - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910004613 CdTe Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Radiation Pyrometers (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
本考案は、光フアイバを用いた放射温度計のセ
ンサ部分の耐熱性向上に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to improving the heat resistance of a sensor portion of a radiation thermometer using an optical fiber.
＜従来の技術＞
第２図は、センサプローブとして光フアイバを
用いた放射温度計による一般的測定例を示すもの
で、光フアイバ１の先端に設けた円柱状の屈折率
分布型レンズ（以下、単にレンズという）２を測
定対象物（高温物体）３近傍に非接触の状態で配
置し、測定対象物３からの光信号（放射光Ｈ）を
光フアイバ１を介して温度変換器４に伝送してい
る。<Prior art> Fig. 2 shows a general measurement example using a radiation thermometer using an optical fiber as a sensor probe. (simply referred to as a lens) 2 is placed near the object to be measured (high-temperature object) 3 in a non-contact state, and the optical signal (radiated light H) from the object to be measured 3 is transmitted to the temperature converter 4 via the optical fiber 1. are doing.
この様に光信号を光フアイバを用いて伝送する
放射温度計は、電磁界や化学的雰囲気等によつて
信号が影響を受けることなく、更に引火爆発のお
それもないため、電線による信号伝送に比較して
多くのメリツトを有している。 Radiation thermometers that transmit optical signals using optical fibers are not affected by electromagnetic fields or chemical atmospheres, and there is no risk of ignition or explosion, so they are suitable for signal transmission using electric wires. It has many advantages in comparison.
ところで上記放射温度計に用いられる光フアイ
バ１は第４図の断面図で示すように中央部のコア
と呼ばれる部分２０とこれを取巻く屈折率の低い
クラツド２１から構成されており、光フアイバの
強度を向上させるためにクラツドの外周を覆つて
例えばSi樹脂からなるエラストマー２２が形成さ
れている。 By the way, the optical fiber 1 used in the above-mentioned radiation thermometer is composed of a central portion 20 called a core and a cladding 21 with a low refractive index surrounding it, as shown in the cross-sectional view of FIG. In order to improve the cladding, an elastomer 22 made of, for example, Si resin is formed to cover the outer periphery of the cladding.
第３図はレンズ２を大小の孔を有するレンズホ
ルダ（以下単にホルダという）１４の大径部に収
納するとともに、光フアイバ１を貫通孔を有する
凸状の保持金具１５に通して保持金具１５の一方
の端面と先端を面一にし、保持金具１５の凸部を
ホルダ１４の小径部に挿入してレンズ２と光フア
イバ１の先端を近接または接触させ、レンズ２と
ホルダ１４の端部Ｅ、ホルダ１４と保持金具１５
の接続部Ｆ、光フアイバ１と保持金具１５の他方
の端部Ｇ部とを樹脂系接着剤により接着した構成
図を示すものである。なお、このレンズ２の外周
は迷光をカツトするため粗面とされ黒色塗料が塗
布されている。 In FIG. 3, the lens 2 is housed in the large diameter part of a lens holder (hereinafter simply referred to as holder) 14 having large and small holes, and the optical fiber 1 is passed through a convex holding fitting 15 having a through hole. , and insert the convex portion of the holding fitting 15 into the small diameter portion of the holder 14 so that the lens 2 and the tip of the optical fiber 1 are brought close to or in contact with each other, and the end E of the lens 2 and the holder 14 is aligned. , holder 14 and holding fittings 15
This is a configuration diagram in which the connecting portion F, the optical fiber 1, and the other end portion G of the holding fitting 15 are bonded using a resin adhesive. The outer periphery of this lens 2 is roughened and coated with black paint to cut out stray light.
＜考案が解決しようとする問題点＞
しかしながら、上記Ｅ，Ｆ，Ｇ部の接続は樹脂
系接着剤を用いて固定されているため耐熱性に劣
るという問題がある。<Problems to be solved by the invention> However, since the connections of the E, F, and G sections are fixed using a resin adhesive, there is a problem that the heat resistance is poor.
本考案は上記問題点に鑑みて成されたもので、
光フアイバとレンズをろう付け（軟ろうまたは硬
ろう）によつて接続することにより耐熱性の向上
を図ることを目的とする。 This idea was created in view of the above problems.
The purpose is to improve heat resistance by connecting an optical fiber and a lens using brazing (soft solder or hard solder).
＜問題点を解決するための手段＞
前記問題点を解決するための本考案の構成は、
センサ部の先端にレンズが設けられ、このレンズ
に接続された光フアイバを介して光信号を受信す
る放射温度計において、前記光フアイバの先端近
傍の外周および前記レンズの外周にろう付け可能
な材料をスパツタまたは蒸着などによつて成膜
し、前記レンズの外周にホルダをろう付けすると
ともに、前記光フアイバの先端外周部に保持金具
をろう付けし、前記レンズの側面と前記光フアイ
バの先端を近接または接触するように前記ホルダ
と前記保持金具をろう付けしたものである。<Means for solving the problems> The configuration of the present invention for solving the above problems is as follows:
In a radiation thermometer in which a lens is provided at the tip of a sensor part and receives an optical signal via an optical fiber connected to the lens, a material that can be brazed to the outer periphery near the tip of the optical fiber and the outer periphery of the lens is formed by sputtering or vapor deposition, and a holder is brazed to the outer periphery of the lens, and a holding fitting is brazed to the outer periphery of the tip of the optical fiber, so that the side surface of the lens and the tip of the optical fiber are bonded together. The holder and the holding fitting are brazed so that they are close to each other or in contact with each other.
＜実施例＞
第１図は本考案の一実施例を示す断面構成図で
ある。図において第２図と同一要素には同一符号
を付して説明は省略するが、この光フアイバ１の
少なくとも先端部（高温雰囲気中に暴露される部
分）は例えば金、銀、ニツケル、アルミニウム等
の金属１３がスパツタ、蒸着等によりコーテイン
グされている（この金属のコーテイングは従来の
エラストマーと同様光フアイバ１の強度向上に寄
与する）。また、レンズ２の外周部分には黒色塗
料の代りに光吸収率が高く耐熱性の高い黒色材料
（Ge，Sb2S3，CdTe，CdSe，PbXCd1−XTe等）
が蒸着やスパツタ等によりコーテイングされてお
り、さらに、このコーテイング上に金、銀、ニツ
ケル、アルミニウム等の金属がスパツタ、蒸着等
によりコーテイングされている。また、ホルダ１
４および保持金具１５はろう付け可能な耐熱材料
で形成されている。<Example> FIG. 1 is a cross-sectional configuration diagram showing an example of the present invention. In the figure, elements that are the same as those in FIG. A metal 13 is coated by sputtering, vapor deposition, etc. (this metal coating contributes to improving the strength of the optical fiber 1, similar to conventional elastomers). In addition, instead of black paint, the outer periphery of the lens 2 is coated with a black material (Ge, Sb 2 S 3 , CdTe, CdSe, Pb X Cd 1 − X Te, etc.) that has high light absorption and high heat resistance.
is coated by vapor deposition, sputtering, etc., and furthermore, a metal such as gold, silver, nickel, aluminum, etc. is coated on this coating by sputtering, vapor deposition, etc. Also, holder 1
4 and the holding fitting 15 are made of a heat-resistant material that can be brazed.
上記のように構成し、従来樹脂系接着剤を用い
て接続していたＥ，Ｆ，Ｇ部をろう付けにより接
続する。 With the above structure, the E, F, and G sections, which were conventionally connected using a resin adhesive, are connected by brazing.
＜考案の効果＞
以上実施例とともに具体的に説明したように、
本考案によれば、光フアイバの先端近傍の外周お
よびレンズの外周にろう付け可能な材料をスパツ
タまたは蒸着し、Ｅ，Ｆ，Ｇ部をろう付けにより
接続したので、従来に比較して耐熱性を飛躍的に
向上させることができる。<Effects of the invention> As specifically explained above with the examples,
According to the present invention, a material that can be brazed is sputtered or vapor-deposited on the outer periphery near the tip of the optical fiber and on the outer periphery of the lens, and the E, F, and G parts are connected by brazing, so the heat resistance is higher than that of the conventional method. can be dramatically improved.
第１図は本考案による放射温度計のセンサ部分
の一実施例を示す構成図、第２図は一般的な放射
温度計の使用例を示す構成図、第３図はレンズと
光フアイバを接続した従来例を示す説明図、第４
図は光フアイバの従来例を示す断面構成図であ
る。
１……光フアイバ、２……屈折率分布型レン
ズ、１３……金属コーテイング、１４……レンズ
ホルダ、１５……保持金具。
Figure 1 is a configuration diagram showing an example of the sensor part of a radiation thermometer according to the present invention, Figure 2 is a configuration diagram showing an example of use of a general radiation thermometer, and Figure 3 is a connection between a lens and an optical fiber. Explanatory diagram showing a conventional example, No. 4
The figure is a cross-sectional configuration diagram showing a conventional example of an optical fiber. DESCRIPTION OF SYMBOLS 1... Optical fiber, 2... Gradient index lens, 13... Metal coating, 14... Lens holder, 15... Holding metal fittings.
Claims (1)
れ、この屈折率分布型レンズに接続された光フア
イバを介して光信号を受信する放射温度計におい
て、前記光フアイバの先端近傍の外周および前記
屈折率分布型レンズの外周にろう付け可能な材料
を成膜し、前記屈折率分布型レンズの外周にホル
ダをろう付けするとともに、前記光フアイバの先
端外周部に保持金具をろう付けし、前記屈折率分
布型レンズの側面と前記光フアイバの先端を近接
または接触するように前記ホルダと前記保持金具
をろう付けしてなる放射温度計。 In a radiation thermometer in which a gradient index lens is provided at the tip of the sensor section and receives an optical signal via an optical fiber connected to the gradient index lens, the outer periphery near the tip of the optical fiber and the refraction A material that can be brazed is formed on the outer periphery of the gradient index lens, a holder is brazed to the outer periphery of the gradient index lens, and a holding fitting is brazed to the outer periphery of the tip of the optical fiber. A radiation thermometer in which the holder and the holding fitting are brazed to each other so that the side surface of the index distribution lens and the tip of the optical fiber are in close proximity to or in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472186U JPH0511475Y2 (en) | 1986-07-08 | 1986-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472186U JPH0511475Y2 (en) | 1986-07-08 | 1986-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6310427U JPS6310427U (en) | 1988-01-23 |
| JPH0511475Y2 true JPH0511475Y2 (en) | 1993-03-22 |
Family
ID=30978480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10472186U Expired - Lifetime JPH0511475Y2 (en) | 1986-07-08 | 1986-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0511475Y2 (en) |
-
1986
- 1986-07-08 JP JP10472186U patent/JPH0511475Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6310427U (en) | 1988-01-23 |
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