JPH0448511Y2 - - Google Patents
Info
- Publication number
- JPH0448511Y2 JPH0448511Y2 JP10472786U JP10472786U JPH0448511Y2 JP H0448511 Y2 JPH0448511 Y2 JP H0448511Y2 JP 10472786 U JP10472786 U JP 10472786U JP 10472786 U JP10472786 U JP 10472786U JP H0448511 Y2 JPH0448511 Y2 JP H0448511Y2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- gradient index
- light absorption
- brazed
- radiation thermometer
- 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
Links
- 239000000463 material Substances 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 9
- 230000031700 light absorption Effects 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 description 8
- 238000007740 vapor deposition Methods 0.000 description 8
- 238000005219 brazing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003779 heat-resistant material Substances 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
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 238000005259 measurement Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 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
- 238000005476 soldering Methods 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、屈折率分布型レンズを用いた放射温
度計のセンサ部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 section of a radiation thermometer using a gradient index lens.
＜従来の技術＞
第２図は、センサプロープとして屈折率分布型
レンズを用いた放射温度計の一般的測定例を示す
もので、光フアイバ２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）１
を測定対象物（高温物体）の近傍に非接触の状態
で配置し、測定対象物からの光信号（放射光Ｈ）
を光フアイバ２を介して温度変換器１４に伝送し
ている。<Prior art> Fig. 2 shows a general measurement example of a radiation thermometer using a gradient index lens as a sensor probe. (hereinafter simply referred to as lens) 1
is placed near the object to be measured (high-temperature object) in a non-contact state, and the optical signal (radiated light H) from the object to be measured is detected.
is transmitted to the temperature converter 14 via the optical fiber 2.
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.
第３図はレンズ１と光フアイバ２を接続した構
成断面図である。第３図において、レンズ１の外
周は迷光（レンズの光軸と平行または僅かな角度
で入射する信号光以外の放射光）をカツトするた
め粗面とされ、光吸収層としての黒色塗料７が塗
布されている。この黒色塗料７の上にレンズホル
ダ（以下、単にホルダという）３が被せられ、樹
脂系接着剤８により固定されている。 FIG. 3 is a sectional view of the structure in which the lens 1 and the optical fiber 2 are connected. In FIG. 3, the outer periphery of the lens 1 is roughened to cut out stray light (radiated light other than signal light that is incident parallel to or at a slight angle to the optical axis of the lens), and a black paint 7 is coated as a light absorption layer. It is coated. A lens holder (hereinafter simply referred to as holder) 3 is placed on top of the black paint 7 and fixed with a resin adhesive 8.
＜考案が解決しようとする問題点＞
しかしながら、この様に構成されたレンズは光
吸収層に黒色塗料７を用い、ホルダの固定に樹脂
系接着剤８を用い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 lens configured in this way uses black paint 7 for the light absorption layer and resin adhesive 8 to fix the holder, it has a problem of poor heat resistance. There is.
本考案は上記問題点に鑑みて成されたもので、
レンズの外周に黒色材料の光吸収層を蒸着または
スパツタ等により形成し、この上にろう付け（軟
ろう、または硬ろう）可能な材料の被膜を蒸着ま
たはスパツタ等で設け、ホルダとレンズをろう付
けによつて固定することにより、レンズ部分の耐
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.
A light-absorbing layer of a black material is formed on the outer periphery of the lens by vapor deposition or sputtering, and a coating of a material that can be brazed (soft or hard soldering) is provided on top of this by vapor deposition or sputtering, and the holder and lens are bonded together by brazing. The purpose is to improve the heat resistance of the lens portion by fixing it by attaching it.
＜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、
センサ部の先端に屈折率分布型レンズが設けら
れ、この屈折率分布型レンズに接続された光フア
イバを介して信号を受信する放射温度計におい
て、前記屈折率分布型レンズの外周を粗面とし、
この粗面に上に光の吸収率が高く、耐熱性の高い
黒色材料を蒸着またはスパツタ等で付着して光吸
収層を形成し、前記光吸収層の上にろう付け可能
な材料の被膜を蒸着またはスパツタ等で設け、前
記屈折率分布型レンズの外周に金属製ホルダをろ
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 gradient index lens is provided at the tip of a sensor section and receives a signal via an optical fiber connected to the gradient index lens, the outer periphery of the gradient index lens is a rough surface. ,
A light-absorbing layer is formed by depositing a black material with high light absorption and high heat resistance on this rough surface by vapor deposition or sputtering, and a coating of a material that can be brazed is formed on the light-absorbing layer. It is provided by vapor deposition or sputtering, and a metal holder is brazed to the outer periphery of the gradient index lens.
＜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
を付して説明を省略するが、本考案においてはレ
ンズ１の外周部分は粗面とされ、この粗面の上に
光吸収率が高く耐熱性の高い黒色材料（例えば
Ge，Sb2S3，CdTe，CdSe，PbxCd1−xTe等）
４が蒸着やスパツタ等により形成されており、さ
らに、この光吸収層４の上にろう付け可能な材料
（例えば金、銀、ニツケル、アルミニウム等）５
がスパツタ、蒸着等により形成されている。６は
内面の両端が面取りされた円筒状のホルダで、ろ
う付け可能な耐熱材料で構成され、このホルダの
両端Ａ，Ｂ部とレンズ１がろう付けにより固定さ
れる。<Example> FIG. 1 is a cross-sectional configuration diagram showing an example of the present invention. In the figure, the same elements as in Figure 2 are given the same reference numerals and explanations are omitted, but in the present invention, the outer peripheral part of the lens 1 is made a rough surface, and on this rough surface there is a high light absorption rate and a heat resistant material. black materials with high black color (e.g.
Ge, Sb 2 S 3 , CdTe, CdSe, PbxCd 1 −xTe, etc.)
A layer 4 is formed by vapor deposition, sputtering, etc., and a material 5 that can be brazed (for example, gold, silver, nickel, aluminum, etc.) is formed on the light absorption layer 4.
is formed by sputtering, vapor deposition, etc. Reference numeral 6 denotes a cylindrical holder with chamfered inner surfaces at both ends, which is made of a heat-resistant material that can be brazed, and both ends A and B of this holder and the lens 1 are fixed by brazing.
上記構成によればレンズ１の外面に黒色塗料や
樹脂系接着剤を使用せず、耐熱性の高い黒色材料
４およびろう付け可能な材料５を蒸着またはスパ
ツタなどにより形成し、ホルダ６とレンズ１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。なお、本
実施例においてはホルダの両端をレンズ１にろう
付けしたが、いずれか一方の端部をろう付けして
もよい。 According to the above structure, a highly heat-resistant black material 4 and a brazing material 5 are formed by vapor deposition or sputtering without using black paint or resin adhesive on the outer surface of the lens 1, and the holder 6 and lens 1 are formed by vapor deposition or sputtering. Since they are connected by brazing, heat resistance can be dramatically improved compared to conventional methods. In this embodiment, both ends of the holder are brazed to the lens 1, but either end may be brazed.
＜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、センサ部の耐熱性の高い放射温
度計を実現することが出来る。<Effects of the invention> As specifically explained above with the examples,
According to the present invention, it is possible to realize a radiation thermometer whose sensor portion has high heat resistance.
第１図は本考案による放射温度計のセンサ部分
の一実施例を示す断面構成図、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図は従来
技術を示す断面構成図である。
１……屈折率分布型レンズ、２……光フアイ
バ、３……黒色材料、４……ろう付け可能な材
料。
Fig. 1 is a cross-sectional configuration diagram showing an example of the sensor portion of the radiation thermometer according to the present invention, Fig. 2 is a configuration diagram showing an example of use of a general radiation thermometer, and Fig. 3 is a cross-sectional diagram showing the conventional technology. FIG. 1... Gradient index lens, 2... Optical fiber, 3... Black material, 4... Brazable material.
Claims (1)
れ、この屈折率分布型レンズに接続された光フア
イバを介して信号を受信する放射温度計におい
て、前記屈折率分布型レンズの外周を粗面とし、
この粗面の上に光の吸収率が高く、耐熱性の高い
黒色材料からなる光吸収層を形成し、前記光吸収
層の上にろう付け可能な材料の被膜を設け、前記
屈折率分布型レンズの外周に金属製ホルダをろう
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 a sensor section and receives a signal via an optical fiber connected to the gradient index lens, the outer periphery of the gradient index lens is a rough surface. ,
A light absorption layer made of a black material with high light absorption rate and high heat resistance is formed on this rough surface, and a coating of a material that can be brazed is provided on the light absorption layer, and the refractive index distribution type A radiation thermometer with a metal holder brazed to the outer periphery of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472786U JPH0448511Y2 (en) | 1986-07-08 | 1986-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472786U JPH0448511Y2 (en) | 1986-07-08 | 1986-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6310433U JPS6310433U (en) | 1988-01-23 |
| JPH0448511Y2 true JPH0448511Y2 (en) | 1992-11-16 |
Family
ID=30978493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10472786U Expired JPH0448511Y2 (en) | 1986-07-08 | 1986-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448511Y2 (en) |
-
1986
- 1986-07-08 JP JP10472786U patent/JPH0448511Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6310433U (en) | 1988-01-23 |
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