JPS56157819A - Optical type liquid level detecting element - Google Patents
Optical type liquid level detecting elementInfo
- Publication number
- JPS56157819A JPS56157819A JP6091380A JP6091380A JPS56157819A JP S56157819 A JPS56157819 A JP S56157819A JP 6091380 A JP6091380 A JP 6091380A JP 6091380 A JP6091380 A JP 6091380A JP S56157819 A JPS56157819 A JP S56157819A
- Authority
- JP
- Japan
- Prior art keywords
- prism
- light
- detecting element
- liquid level
- level detecting
- 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 title abstract 5
- 230000003287 optical effect Effects 0.000 title abstract 3
- 239000013307 optical fiber Substances 0.000 abstract 4
- 239000000835 fiber Substances 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 241000735235 Ligustrum vulgare Species 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Abstract
PURPOSE:To eliminate electrical contacts from a liquid level detecting element and enable it to be constituted from glass or the like, which is excellent in corrosion resistance, by leading the beam of light from a light-outputting fiber to a light-inputting fiber through lens systems and a prism arranged on the optical path, and making the reflecting and refracting surface of said prism capable of contact with a liquid to be detected. CONSTITUTION:The optical liquid level detecting element comprises input-side and output-side optical fibers, lens systems to optically combine with the fibers, and a prism provided between said lens systems and whose reflecting and refracting surface is capable of contact with a liquid to be detected. For example, rod lenses 130 and 140 are arranged on the straight line including an input-side optical fiber 110 and an output-side optical fiber 120 which are covered with coatings 111 and 121 respectively. Moreover, a prism 150 is arranged between said rod lenses, and this is encloed in a case 160. In addition, the prims 150 is made capable of contact with, e.g., an aqueous solution. Thereby, when the prism is submerged in the aqueous solution, the reflactive index changes, so that the quantity of light entering the output-side optical fiber 120 decreases. Accordingly, the quantity of water can be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6091380A JPS56157819A (en) | 1980-05-08 | 1980-05-08 | Optical type liquid level detecting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6091380A JPS56157819A (en) | 1980-05-08 | 1980-05-08 | Optical type liquid level detecting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56157819A true JPS56157819A (en) | 1981-12-05 |
Family
ID=13156088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6091380A Pending JPS56157819A (en) | 1980-05-08 | 1980-05-08 | Optical type liquid level detecting element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56157819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190004264A1 (en) * | 2017-07-03 | 2019-01-03 | Jr-Hui Hsieh | Escape system for a sinking car and an optoelectronic component thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137380A (en) * | 1976-05-13 | 1977-11-16 | Nippon Bunkou Medeikaru Kk | Liquid level detector |
-
1980
- 1980-05-08 JP JP6091380A patent/JPS56157819A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137380A (en) * | 1976-05-13 | 1977-11-16 | Nippon Bunkou Medeikaru Kk | Liquid level detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190004264A1 (en) * | 2017-07-03 | 2019-01-03 | Jr-Hui Hsieh | Escape system for a sinking car and an optoelectronic component thereof |
| US10352086B2 (en) * | 2017-07-03 | 2019-07-16 | Jr-Hui Hsieh | Escape system for a sinking car and an optoelectronic component thereof |
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