JPS54161355A - Automatic range finder - Google Patents
Automatic range finderInfo
- Publication number
- JPS54161355A JPS54161355A JP7023478A JP7023478A JPS54161355A JP S54161355 A JPS54161355 A JP S54161355A JP 7023478 A JP7023478 A JP 7023478A JP 7023478 A JP7023478 A JP 7023478A JP S54161355 A JPS54161355 A JP S54161355A
- Authority
- JP
- Japan
- Prior art keywords
- range finding
- phase
- detecting
- range finder
- video signals
- 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)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To obtain a range finding information in high accuracy by detecting the phase difference between two video signals of a camera or the like.
CONSTITUTION: The outputs of video cameras 1 and 2 are fed to analog delay circuits 5 and 6, respectively, so that they are consecutively circulated and delayed in phase thereby to detect the difference of the respective delayed phases at 7. Thus, the range finding information is obtained by detecting the circulating frequencies when the two phase coincide. In these ways, the highly accurate range finding operation can be automatically accomplished by comparing the video signals in an analog manner.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7023478A JPS54161355A (en) | 1978-06-09 | 1978-06-09 | Automatic range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7023478A JPS54161355A (en) | 1978-06-09 | 1978-06-09 | Automatic range finder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54161355A true JPS54161355A (en) | 1979-12-20 |
Family
ID=13425664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7023478A Pending JPS54161355A (en) | 1978-06-09 | 1978-06-09 | Automatic range finder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161355A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575018A (en) * | 1980-06-13 | 1982-01-11 | Olympus Optical Co Ltd | Focus controller |
JPS6413110A (en) * | 1987-07-07 | 1989-01-18 | Fuji Photo Film Co Ltd | Phase difference detecting device |
JPH01227112A (en) * | 1988-03-08 | 1989-09-11 | Fuji Photo Film Co Ltd | Automatic focusing device |
JPH01229211A (en) * | 1988-03-10 | 1989-09-12 | Fuji Photo Film Co Ltd | Phase difference detecting device |
-
1978
- 1978-06-09 JP JP7023478A patent/JPS54161355A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575018A (en) * | 1980-06-13 | 1982-01-11 | Olympus Optical Co Ltd | Focus controller |
JPH0146845B2 (en) * | 1980-06-13 | 1989-10-11 | Olympus Optical Co | |
JPS6413110A (en) * | 1987-07-07 | 1989-01-18 | Fuji Photo Film Co Ltd | Phase difference detecting device |
JPH01227112A (en) * | 1988-03-08 | 1989-09-11 | Fuji Photo Film Co Ltd | Automatic focusing device |
JPH01229211A (en) * | 1988-03-10 | 1989-09-12 | Fuji Photo Film Co Ltd | Phase difference detecting device |
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