JPH0220364U - - Google Patents
Info
- Publication number
- JPH0220364U JPH0220364U JP2694988U JP2694988U JPH0220364U JP H0220364 U JPH0220364 U JP H0220364U JP 2694988 U JP2694988 U JP 2694988U JP 2694988 U JP2694988 U JP 2694988U JP H0220364 U JPH0220364 U JP H0220364U
- Authority
- JP
- Japan
- Prior art keywords
- light
- wavelength
- light source
- output
- refractive index
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Lasers (AREA)
Description
第１図は本考案に係る空気の屈折率測定機能を
有する安定化光源の一実施例を示すブロツク図、
第２図は屈折率の測定方法を説明する為の特性曲
線図、第３図は本考案の他の実施例を示すブロツ
ク図、第４図及び第５図は従来の安定化光源のブ
ロツク図、第６図はフアブリペロー干渉計の透過
光の強度曲線である。
１……半導体レーザー、２，４，２０，２３…
…ハーフミラー、５，７，２４，２５……光検出
器、８……制御手段、２１……フアブリペロー干
渉計、２２……ミラー、２６……演算手段、２１
１……透過板、２１２……スペーサ。
FIG. 1 is a block diagram showing an embodiment of a stabilized light source having a function of measuring the refractive index of air according to the present invention;
Fig. 2 is a characteristic curve diagram for explaining the refractive index measurement method, Fig. 3 is a block diagram showing another embodiment of the present invention, and Figs. 4 and 5 are block diagrams of a conventional stabilized light source. , FIG. 6 is an intensity curve of transmitted light of the Fabry-Perot interferometer. 1... Semiconductor laser, 2, 4, 20, 23...
... Half mirror, 5, 7, 24, 25 ... Photodetector, 8 ... Control means, 21 ... Fabry-Perot interferometer, 22 ... Mirror, 26 ... Calculation means, 21
1...Transmission plate, 212...Spacer.
Claims (1)
定の波長の光を透過または吸収する第１の波長弁
別素子と、この第１の波長弁別素子の透過光が入
射される第１の光検出器と、この第１の光検出器
の出力が入力されこの入力に基いて前記光源を制
御する制御手段と、前記光源の出力光の一部が入
射され特定の波長の光を透過または吸収する第２
の波長弁別素子と、この第２の波長弁別素子の透
過光が入射される第２の光検出器とを有し、前記
第１の波長弁別素子及び第２の波長弁別素子の一
方を空気中に暴露し、他方を屈折率が一定の部材
で構成すると共に前記第２の光検出器の出力に基
づいて空気の屈折率を求めることを特徴とする空
気の屈折率測定機能を有する安定化光源。 A light source, a first wavelength discriminator that receives a portion of the output light of the light source and transmits or absorbs light of a specific wavelength, and a first light that receives the transmitted light of the first wavelength discriminator. a detector, a control means into which the output of the first photodetector is input and which controls the light source based on this input; a part of the output light of the light source is incident and transmits or absorbs light of a specific wavelength; Second to do
a wavelength discriminating element, and a second photodetector into which the transmitted light of the second wavelength discriminating element is incident, one of the first wavelength discriminating element and the second wavelength discriminating element is placed in air A stabilized light source having an air refractive index measuring function, characterized in that the other is made of a member having a constant refractive index, and the refractive index of the air is determined based on the output of the second photodetector. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2694988U JPH0331090Y2 (en) | 1988-03-02 | 1988-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2694988U JPH0331090Y2 (en) | 1988-03-02 | 1988-03-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0220364U true JPH0220364U (en) | 1990-02-09 |
| JPH0331090Y2 JPH0331090Y2 (en) | 1991-07-01 |
Family
ID=31249030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2694988U Expired JPH0331090Y2 (en) | 1988-03-02 | 1988-03-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0331090Y2 (en) |
-
1988
- 1988-03-02 JP JP2694988U patent/JPH0331090Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0331090Y2 (en) | 1991-07-01 |