JPS55134321A - Liquid level detector - Google Patents
Liquid level detectorInfo
- Publication number
- JPS55134321A JPS55134321A JP4164179A JP4164179A JPS55134321A JP S55134321 A JPS55134321 A JP S55134321A JP 4164179 A JP4164179 A JP 4164179A JP 4164179 A JP4164179 A JP 4164179A JP S55134321 A JPS55134321 A JP S55134321A
- Authority
- JP
- Japan
- Prior art keywords
- clad
- optical fiber
- core
- light
- liquid level
- 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
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE:To obtain a highly sensitive liquid level detector by bending an optical fiber consisting of a core and a clad, and separating a part of the clad in the bent portion of the optical fiber so as to form a light leaking section in the optical fiber. CONSTITUTION:In an optical fiber 6 consisting of a core and a clad, the light entering the core from an LED3 is propagated at a high efficiency as the light is reflected repeatedly upon an interface between the core and clad, so that a general loss of light is minimized. A part of a bent section of the optical fiber 6 is cut to separate the clad and form an exposure surface 8 of the core, which exposure surface 8 is polished. In this polished, clad-separated portion 8 of the optical fiber 6, the leakage of light can be greatly varied by a liquid 2. Thus, a high density liquid level detector of a high output level and a large width of variations in output level utilizing a simply constructed electric circuit can be easily obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4164179A JPS55134321A (en) | 1979-04-06 | 1979-04-06 | Liquid level detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4164179A JPS55134321A (en) | 1979-04-06 | 1979-04-06 | Liquid level detector |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10750679A Division JPS55134317A (en) | 1979-08-23 | 1979-08-23 | Liquid level detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55134321A true JPS55134321A (en) | 1980-10-20 |
Family
ID=12613951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4164179A Pending JPS55134321A (en) | 1979-04-06 | 1979-04-06 | Liquid level detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55134321A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185935U (en) * | 1981-05-21 | 1982-11-25 | ||
US4647767A (en) * | 1985-03-18 | 1987-03-03 | Western Geophysical Company Of America | Optical goniometer containing immiscible fluids having different refractive indices |
JPS62117528U (en) * | 1986-01-17 | 1987-07-25 | ||
JPS6365321A (en) * | 1986-09-08 | 1988-03-23 | Nagoyashi | Optical liquid level sensor |
JPH02143123A (en) * | 1988-11-25 | 1990-06-01 | Shimadzu Corp | Liquid level detector |
-
1979
- 1979-04-06 JP JP4164179A patent/JPS55134321A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185935U (en) * | 1981-05-21 | 1982-11-25 | ||
JPS6221948Y2 (en) * | 1981-05-21 | 1987-06-04 | ||
US4647767A (en) * | 1985-03-18 | 1987-03-03 | Western Geophysical Company Of America | Optical goniometer containing immiscible fluids having different refractive indices |
JPS62117528U (en) * | 1986-01-17 | 1987-07-25 | ||
JPS6365321A (en) * | 1986-09-08 | 1988-03-23 | Nagoyashi | Optical liquid level sensor |
JPH0367579B2 (en) * | 1986-09-08 | 1991-10-23 | Nagoyashi | |
JPH02143123A (en) * | 1988-11-25 | 1990-06-01 | Shimadzu Corp | Liquid level detector |
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