JPS55155204A - Measuring instrument for thickness of film - Google Patents
Measuring instrument for thickness of filmInfo
- Publication number
- JPS55155204A JPS55155204A JP6258079A JP6258079A JPS55155204A JP S55155204 A JPS55155204 A JP S55155204A JP 6258079 A JP6258079 A JP 6258079A JP 6258079 A JP6258079 A JP 6258079A JP S55155204 A JPS55155204 A JP S55155204A
- Authority
- JP
- Japan
- Prior art keywords
- film
- thickness
- light
- probe
- measuring instrument
- 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
- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
PURPOSE: To continuously measure the thickness of a film without bringing a measuring instrument into contact therewith, by measuring the quantity of light reflected on upper and lower surfaces of the film with photoelectric displacement meters, and applying outputs from the displacement meters to an operator to calculate the thickness of the film on the basis of the difference between the outputs from the displacement meters.
CONSTITUTION: The first displacement meter 1 consists of a probe P1 composed of a bundle of optical fibers, a light source L1, a filter F1 adapted to permeate therethrough the light of a wave- length reflected on an absorption region of a film C on a block B, a light-receiving element D1, and an amplifier A1 an output l1 from which corresponds to a distance between the probe P1 and an upper surface of the film C. The second displacement meter 2 also consists of a probe P2, a light source L2, a filter F2 adapted to permeate therethrough the light of a wave-length reflected on a transparent region of the film C, a light-receiving element D2, and an amplifier A2 an output l2 from which corresponds to a distance between the probe P2 and a lower surface of the film C. The thickness of the film is calculated in an operator 3 by using a calibration value on the basis of a difference between the outputs l1, l2. Thus, the thickness of a film can be continuously measured without bringing a measuring instrument into contact therewith.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258079A JPS55155204A (en) | 1979-05-23 | 1979-05-23 | Measuring instrument for thickness of film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258079A JPS55155204A (en) | 1979-05-23 | 1979-05-23 | Measuring instrument for thickness of film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55155204A true JPS55155204A (en) | 1980-12-03 |
Family
ID=13204388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6258079A Pending JPS55155204A (en) | 1979-05-23 | 1979-05-23 | Measuring instrument for thickness of film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55155204A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392123A (en) * | 1991-09-06 | 1995-02-21 | Eastman Kodak Company | Optical monitor for measuring a gap between two rollers |
| US5581351A (en) * | 1994-02-22 | 1996-12-03 | Eastman Kodak Company | Optical monitor for measuring thermal expansion of a rotating roller |
| EP1069401A1 (en) * | 1999-07-13 | 2001-01-17 | ODME International B.V. | Optical film thickness measuring device |
| EP1564572A4 (en) * | 2002-11-01 | 2007-02-07 | Omron Tateisi Electronics Co | OPTICAL MULTIPLEXER / DEMULTIPLEXER AND METHOD FOR PRODUCING OPTICAL MULTIPLEXER / DEMULTIPLEXER |
| CN100422777C (en) * | 2002-11-01 | 2008-10-01 | 欧姆龙株式会社 | Optical combiner and demultiplexer and method for manufacturing optical combiner and demultiplexer |
-
1979
- 1979-05-23 JP JP6258079A patent/JPS55155204A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392123A (en) * | 1991-09-06 | 1995-02-21 | Eastman Kodak Company | Optical monitor for measuring a gap between two rollers |
| US5581351A (en) * | 1994-02-22 | 1996-12-03 | Eastman Kodak Company | Optical monitor for measuring thermal expansion of a rotating roller |
| EP1069401A1 (en) * | 1999-07-13 | 2001-01-17 | ODME International B.V. | Optical film thickness measuring device |
| EP1564572A4 (en) * | 2002-11-01 | 2007-02-07 | Omron Tateisi Electronics Co | OPTICAL MULTIPLEXER / DEMULTIPLEXER AND METHOD FOR PRODUCING OPTICAL MULTIPLEXER / DEMULTIPLEXER |
| CN100422777C (en) * | 2002-11-01 | 2008-10-01 | 欧姆龙株式会社 | Optical combiner and demultiplexer and method for manufacturing optical combiner and demultiplexer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106197492B (en) | Fa-Po cavity length and refractive index computational methods based on optical fiber composite algorithm amber cavity configuration | |
| GB2197068A (en) | Optical sensor device | |
| JPS5489680A (en) | Optical measuring method and optical measuring apparatus | |
| JPS55155204A (en) | Measuring instrument for thickness of film | |
| JPS5796203A (en) | Contactless displacement detector employing optical fiber | |
| JPS55142220A (en) | Device for measuring wavelength | |
| JPS5760239A (en) | Pressure sensor | |
| FR2425065A1 (en) | Optical system for measuring surface reflectance properties - has optical elements aligned close to surface normal (OE 15.10.79) | |
| JPS5735760A (en) | Current measuring device | |
| JPS5740658A (en) | Measuring apparatus for electric field | |
| JPS57111435A (en) | Measuring device for absorption intensity of infrared ray by atr method | |
| JPS5720603A (en) | Detector for plate width using laser | |
| JPS57194324A (en) | Optical temperature measuring device | |
| Laguesse | An optical fibre refractometer for liquids using two measurement channels to reject optical attenuation | |
| SU1693482A1 (en) | Device for determination of liquid medium optical parameters | |
| JPS573020A (en) | Temperature measuring method | |
| JPS56130609A (en) | Measuring device with function to convert absolute value | |
| JPS54155856A (en) | Optical fiber sensor | |
| JPS56111405A (en) | Method and device for measuring thickness of transparent film | |
| JPS5918647B2 (en) | How do you know how to use light and light? | |
| JPS5550105A (en) | Moving distance meter for movable body | |
| SU1702179A1 (en) | Method of determining part surface roughness | |
| JPS6432153A (en) | Method and instrument for measuring characteristic of sheet type material | |
| SU1651115A1 (en) | Device for measuring stress in pieces made of transparent materials | |
| JPS57144447A (en) | Measuring apparatus of brilliance of mirror face |