JPS54143128A - Device for focusing projected image onto image plane - Google Patents
Device for focusing projected image onto image planeInfo
- Publication number
- JPS54143128A JPS54143128A JP3680179A JP3680179A JPS54143128A JP S54143128 A JPS54143128 A JP S54143128A JP 3680179 A JP3680179 A JP 3680179A JP 3680179 A JP3680179 A JP 3680179A JP S54143128 A JPS54143128 A JP S54143128A
- Authority
- JP
- Japan
- Prior art keywords
- image plane
- focusing
- projected image
- image onto
- focusing projected
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782813915 DE2813915A1 (de) | 1978-03-31 | 1978-03-31 | Anordnung zur scharfeinstellung der abbildung eines gegenstandes auf eine bildebene |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54143128A true JPS54143128A (en) | 1979-11-08 |
Family
ID=6035845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3680179A Pending JPS54143128A (en) | 1978-03-31 | 1979-03-28 | Device for focusing projected image onto image plane |
Country Status (5)
Country | Link |
---|---|
US (1) | US4247761A (ja) |
JP (1) | JPS54143128A (ja) |
DE (1) | DE2813915A1 (ja) |
FR (1) | FR2421399A1 (ja) |
GB (1) | GB2018084B (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936520A1 (de) * | 1979-09-10 | 1981-03-26 | Siemens AG, 1000 Berlin und 8000 München | Schaltung zur sensorgesteuerten entfernungsmessung |
US4550993A (en) * | 1983-02-01 | 1985-11-05 | Minolta Camera Kabushiki Kaisha | Device for providing a camera system with an information for a focus adjustment |
FR2639108B1 (fr) * | 1988-11-15 | 1990-12-21 | Thomson Csf | Procede pour estimer la distance entre un objet fixe et un vehicule en deplacement et dispositif pour la mise en oeuvre de ce procede |
US5195144A (en) * | 1988-11-15 | 1993-03-16 | Thomson-Csf | Process for estimating the distance between a stationary object and a moving vehicle and device for using this process |
US5136148A (en) * | 1990-07-04 | 1992-08-04 | Olympus Optical Co., Ltd. | Speed detection apparatus for camera |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958826A (ja) * | 1972-10-04 | 1974-06-07 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005443A (en) * | 1975-09-11 | 1977-01-25 | Fritz Albrecht | Scanning device and method for automatic focusing |
-
1978
- 1978-03-31 DE DE19782813915 patent/DE2813915A1/de active Granted
-
1979
- 1979-03-16 US US06/021,077 patent/US4247761A/en not_active Expired - Lifetime
- 1979-03-28 JP JP3680179A patent/JPS54143128A/ja active Pending
- 1979-03-30 FR FR7908053A patent/FR2421399A1/fr active Granted
- 1979-03-30 GB GB7911274A patent/GB2018084B/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958826A (ja) * | 1972-10-04 | 1974-06-07 |
Also Published As
Publication number | Publication date |
---|---|
DE2813915A1 (de) | 1979-10-11 |
FR2421399B1 (ja) | 1983-10-07 |
FR2421399A1 (fr) | 1979-10-26 |
GB2018084B (en) | 1982-09-29 |
GB2018084A (en) | 1979-10-10 |
US4247761A (en) | 1981-01-27 |
DE2813915C2 (ja) | 1988-06-09 |
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