JPS6348147U - - Google Patents
Info
- Publication number
- JPS6348147U JPS6348147U JP14159586U JP14159586U JPS6348147U JP S6348147 U JPS6348147 U JP S6348147U JP 14159586 U JP14159586 U JP 14159586U JP 14159586 U JP14159586 U JP 14159586U JP S6348147 U JPS6348147 U JP S6348147U
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting element
- light emitting
- light receiving
- receiving element
- 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
- 239000007788 liquid Substances 0.000 claims description 5
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第1図は、本考案によるカーブプリズム式液体
屈折率計の信号処理回路の一実施例を示す概略平
面図である。第2図は従来のカーブプリズム式液
体屈折率計の概略側面図、第3図は第2図の液体
屈折率計で使用されている信号処理回路を示す概
略平面図である。
1……LED;2……液体;3……カーブプリ
ズム;4……受光部;4a……第一の受光素子;
4b……第二の受光素子;6,7……プリアンプ
;8……比較回路;10……信号処理回路。
FIG. 1 is a schematic plan view showing an embodiment of a signal processing circuit of a curved prism type liquid refractometer according to the present invention. FIG. 2 is a schematic side view of a conventional curved prism liquid refractometer, and FIG. 3 is a schematic plan view showing a signal processing circuit used in the liquid refractometer of FIG. 1... LED; 2... Liquid; 3... Curved prism; 4... Light receiving section; 4a... First light receiving element;
4b... Second light receiving element; 6, 7... Preamplifier; 8... Comparison circuit; 10... Signal processing circuit.
Claims (1)
発光素子からの光が常に入射する位置に第二の受
光素子が備えられており、該第二の受光素子の出
力信号が基準信号と等しくなるように、上記発光
素子の駆動回路を制御することによりこの発光素
子の発光量を調整して、受光部における発光素子
からの光の強度が一定値になるようにし、かくし
て上記第一の受光素子の出力信号の較正を行うよ
うにしたことを特徴とする、カーブプリズム式液
体屈折率計。 A second light receiving element is provided at a position where light from the light emitting element always enters near the first light receiving element that detects the bright/dark boundary line, and the output signal of the second light receiving element is equal to the reference signal. By controlling the drive circuit of the light emitting element, the amount of light emitted from the light emitting element is adjusted so that the intensity of light from the light emitting element at the light receiving section becomes a constant value. A curved prism type liquid refractometer, characterized in that the output signal of the element is calibrated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14159586U JPS6348147U (en) | 1986-09-16 | 1986-09-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14159586U JPS6348147U (en) | 1986-09-16 | 1986-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6348147U true JPS6348147U (en) | 1988-04-01 |
Family
ID=31049527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14159586U Pending JPS6348147U (en) | 1986-09-16 | 1986-09-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6348147U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59125041A (en) * | 1982-12-29 | 1984-07-19 | Showa Denko Kk | Polarization type differential refractometer |
-
1986
- 1986-09-16 JP JP14159586U patent/JPS6348147U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59125041A (en) * | 1982-12-29 | 1984-07-19 | Showa Denko Kk | Polarization type differential refractometer |