JPS6425006A - Optical method for detecting distance - Google Patents
Optical method for detecting distanceInfo
- Publication number
- JPS6425006A JPS6425006A JP18173987A JP18173987A JPS6425006A JP S6425006 A JPS6425006 A JP S6425006A JP 18173987 A JP18173987 A JP 18173987A JP 18173987 A JP18173987 A JP 18173987A JP S6425006 A JPS6425006 A JP S6425006A
- Authority
- JP
- Japan
- Prior art keywords
- image
- precision
- measurement
- detecting
- image position
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
PURPOSE:To realize a wide detection area and high measuring precision, by detecting the position of an optical image roughly in a wide range and by detecting the position of the image with high precision in a limited area. CONSTITUTION:At the time of measurement with high precision, it is confirmed that an image is located in a high-precision measurement section, by the operation of a first semiconductor image position detecting element which can execute measurement of a wide scope, and thereafter switching is made to a second semiconductor image position detecting element DM for high-precise measurement which can detect an image position in a relatively narrow scope, so as to detect an image position rM within this scope. On the occasion, an actual radius position of an image can be determined as the sum of a position rMA in the radius direction of the element DM and the image position rM. According to this constitution, the image position in the high-precision measurement section can be detected with a precision obtained by dividing the section by the resolution of a signal processing system, while the position of the element DM can be disposed very accurately in physical terms and also the stability of the element is high. Therefore the high-precision detection of a distance is enabled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62181739A JPH0760090B2 (en) | 1987-07-21 | 1987-07-21 | Optical distance detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62181739A JPH0760090B2 (en) | 1987-07-21 | 1987-07-21 | Optical distance detection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6425006A true JPS6425006A (en) | 1989-01-27 |
JPH0760090B2 JPH0760090B2 (en) | 1995-06-28 |
Family
ID=16106039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62181739A Expired - Fee Related JPH0760090B2 (en) | 1987-07-21 | 1987-07-21 | Optical distance detection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0760090B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0448210A (en) * | 1990-06-18 | 1992-02-18 | Mitsui Eng & Shipbuild Co Ltd | Optical distance sensor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61155801A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Compound type semiconductor position detecting element |
JPS6266110A (en) * | 1985-09-19 | 1987-03-25 | Rikagaku Kenkyusho | Optical distance detecting device |
JPS63167211A (en) * | 1986-12-27 | 1988-07-11 | Olympus Optical Co Ltd | Distance detecting device |
JPS63198817A (en) * | 1987-02-12 | 1988-08-17 | Olympus Optical Co Ltd | Distance detecting device |
-
1987
- 1987-07-21 JP JP62181739A patent/JPH0760090B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61155801A (en) * | 1984-12-28 | 1986-07-15 | Toshiba Corp | Compound type semiconductor position detecting element |
JPS6266110A (en) * | 1985-09-19 | 1987-03-25 | Rikagaku Kenkyusho | Optical distance detecting device |
JPS63167211A (en) * | 1986-12-27 | 1988-07-11 | Olympus Optical Co Ltd | Distance detecting device |
JPS63198817A (en) * | 1987-02-12 | 1988-08-17 | Olympus Optical Co Ltd | Distance detecting device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0448210A (en) * | 1990-06-18 | 1992-02-18 | Mitsui Eng & Shipbuild Co Ltd | Optical distance sensor |
Also Published As
Publication number | Publication date |
---|---|
JPH0760090B2 (en) | 1995-06-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |