JPS6478207A - Focus detecting device - Google Patents
Focus detecting deviceInfo
- Publication number
- JPS6478207A JPS6478207A JP23489587A JP23489587A JPS6478207A JP S6478207 A JPS6478207 A JP S6478207A JP 23489587 A JP23489587 A JP 23489587A JP 23489587 A JP23489587 A JP 23489587A JP S6478207 A JPS6478207 A JP S6478207A
- Authority
- JP
- Japan
- Prior art keywords
- focus detection
- focus
- arithmetic
- outputs
- arithmetic means
- 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
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To decrease bodies which cause a failure in focus detection or focus misdetection by providing a means which switches the outputs of 1st and 2nd focus detection systems and an arithmetic means for focus detection, switching the focus detection systems which have different base lines and performing the focus detecting operation in two stages. CONSTITUTION:One of the outputs of the 1st focus detection system 18 and the 2nd focus detection system 19 is selected by the switching means 20 and inputted to the arithmetic means 21. The switching means 20 is controlled the arithmetic means 21 through a driver 22. The arithmetic means 21 detects the focus state of a photographic lens 11 by arithmetic operation and drives a lens driving motor 25 through a driving control circuit 24 to move the photographic lens 11 to a focusing position. In normal operation, the switching means 20 is switched to the side of the 1st focus detection system 18 to input the outputs of photoelectric converting element arrays 16a and 16b to the arithmetic means 21, and the lens driving is performed through the driving control circuit 24 according to the arithmetic result. Consequently, bodies which cause a focus detection failure or focus misdetection are decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234895A JP2762440B2 (en) | 1987-09-21 | 1987-09-21 | Focus detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234895A JP2762440B2 (en) | 1987-09-21 | 1987-09-21 | Focus detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6478207A true JPS6478207A (en) | 1989-03-23 |
JP2762440B2 JP2762440B2 (en) | 1998-06-04 |
Family
ID=16977988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62234895A Expired - Fee Related JP2762440B2 (en) | 1987-09-21 | 1987-09-21 | Focus detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2762440B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680322U (en) * | 1993-04-15 | 1994-11-08 | 株式会社平山製作所 | Underfloor outlet box screwing structure of device support plate to bottom plate |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61295520A (en) * | 1985-06-24 | 1986-12-26 | Minolta Camera Co Ltd | Focus detecting device |
JPS62186214A (en) * | 1986-02-10 | 1987-08-14 | Olympus Optical Co Ltd | Automatic focus adjuster |
-
1987
- 1987-09-21 JP JP62234895A patent/JP2762440B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61295520A (en) * | 1985-06-24 | 1986-12-26 | Minolta Camera Co Ltd | Focus detecting device |
JPS62186214A (en) * | 1986-02-10 | 1987-08-14 | Olympus Optical Co Ltd | Automatic focus adjuster |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0680322U (en) * | 1993-04-15 | 1994-11-08 | 株式会社平山製作所 | Underfloor outlet box screwing structure of device support plate to bottom plate |
Also Published As
Publication number | Publication date |
---|---|
JP2762440B2 (en) | 1998-06-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW287330B (en) | Position controlling device for an induction motor | |
DE69100216D1 (en) | OPERATING DEVICE FOR AN AUTOMATIC MOTOR VEHICLE TRANSMISSION. | |
EP0462589A3 (en) | Control system for load sensing hydraulic drive circuit | |
DE59001849D1 (en) | METHOD AND DEVICE FOR OPERATING A REFRIGERATION SYSTEM. | |
ATE353541T1 (en) | SAFETY SWITCHGEAR MODULE ARRANGEMENT | |
DE68924905T2 (en) | Multi-channel servo system. | |
JPS6478207A (en) | Focus detecting device | |
ES2081330T3 (en) | DEVICE FOR SERVORIZING A COUNTER-REACTION SYSTEM AND APPLICATION TO AMPLIFIERS AND SERVOMECHANISMS. | |
KR880004516A (en) | Switch device | |
KR960039582A (en) | Motor congestion detection method and congestion detection device | |
EP0999700B1 (en) | Imaging apparatus having rotary table | |
SE8402965D0 (en) | AUTOMATIC CONTROL AND TESTING DEVICE FOR THE VARIOUS ELECTRICAL AND MECHANICAL DEVICES IN A MOTOR VEHICLE | |
JPS6457471A (en) | Disk reproducing device | |
EP0828384A3 (en) | Controlling the movable lens of an image pickup apparatus | |
DE69020366T2 (en) | Servo circuit arrangement control system. | |
JPS6479713A (en) | Automatic focusing device for zoom lens | |
SU1717338A1 (en) | Manipulator controlling device | |
EP0150904A3 (en) | Cursor control apparatus and method | |
SU1091115A1 (en) | Device for control of assembling robot | |
JPS57189907A (en) | Stop position learning method for delivering and storehousing crane | |
JPS643826A (en) | Optical disk device | |
SU1262447A1 (en) | Device for controlling the duplicating mechanical arm | |
JP2570327B2 (en) | Focus servo device | |
KR970042061A (en) | Automatic Conveyor of Vehicle Assembly Conveyor | |
JPS56123018A (en) | Control device for speed and position |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |