JPS5518652A - Imaging state detecting system of image - Google Patents
Imaging state detecting system of imageInfo
- Publication number
- JPS5518652A JPS5518652A JP9209978A JP9209978A JPS5518652A JP S5518652 A JPS5518652 A JP S5518652A JP 9209978 A JP9209978 A JP 9209978A JP 9209978 A JP9209978 A JP 9209978A JP S5518652 A JPS5518652 A JP S5518652A
- Authority
- JP
- Japan
- Prior art keywords
- images
- imaging state
- circuit
- image
- scanning 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
Abstract
PURPOSE: To surely detect the imaging state of images by comparing the scanning signals of the images formed by an image forming optical system and evaluating the imaging state from the differences in the illuminances of the proximate two positions of the images.
CONSTITUTION: The images formed by an image forming optical system 1 are scanned by a semiconductor image sensor 4 such as of BBD photo diode array or the like provided at the intended focal plane or in the position conjugate with said focal plane. At this time, the time-series scanning signals and the scanning signals scanned immediate before going through a delay circuit 7 are applied to a differential amplifier 8 whereby they are made to differential signals which are then held in a holding circuit 12 by way of an absolute value circuit 8, γ converting circuit 10 adding specified weights, integrating circuit 11, etc. and are displayed in a display meter 13. Hence, the illuminance differences of the proximate two positions of the images for the image state are evaluated by the meter 13 and the imaging state of the images may be detected surely.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9209978A JPS5518652A (en) | 1978-07-28 | 1978-07-28 | Imaging state detecting system of image |
US06/059,635 US4470676A (en) | 1978-07-28 | 1979-07-23 | Focus detecting device |
DE19792930636 DE2930636A1 (en) | 1978-07-28 | 1979-07-27 | DEVICE FOR FOCUSING DETERMINATION |
FR7919469A FR2435055B1 (en) | 1978-07-28 | 1979-07-27 | FIREPLACE DETECTION DEVICE |
GB7926516A GB2030022B (en) | 1978-07-28 | 1979-07-30 | Focus detecting device |
US06/727,194 US4560864A (en) | 1978-07-28 | 1985-04-29 | Focus detecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9209978A JPS5518652A (en) | 1978-07-28 | 1978-07-28 | Imaging state detecting system of image |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16697085A Division JPS6163813A (en) | 1985-07-29 | 1985-07-29 | Focusing state detector |
JP16696885A Division JPS6163812A (en) | 1985-07-29 | 1985-07-29 | Focusing state detecting element structure of camera |
JP16696985A Division JPS6163814A (en) | 1985-07-29 | 1985-07-29 | Focusing state detector of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5518652A true JPS5518652A (en) | 1980-02-08 |
Family
ID=14044991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9209978A Pending JPS5518652A (en) | 1978-07-28 | 1978-07-28 | Imaging state detecting system of image |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518652A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5734509A (en) * | 1980-08-07 | 1982-02-24 | Asahi Optical Co Ltd | Automatic focusing detector of camera |
JPS5737336A (en) * | 1980-08-19 | 1982-03-01 | Asahi Optical Co Ltd | Automatic focus detector for camera |
JPS5746233A (en) * | 1980-09-04 | 1982-03-16 | Asahi Optical Co Ltd | Automatic focus detector of camera |
JPS5764711A (en) * | 1980-10-09 | 1982-04-20 | Asahi Optical Co Ltd | Automatic focus detector for camera |
JPS5785013A (en) * | 1980-11-17 | 1982-05-27 | Kawasaki Heavy Ind Ltd | Automatic focusing method |
JPS5799604A (en) * | 1980-12-12 | 1982-06-21 | Canon Inc | Focus detector |
JPS57160221A (en) * | 1981-03-28 | 1982-10-02 | Olympus Optical Co Ltd | Analog to digital conversion system |
JPS59155809A (en) * | 1983-02-24 | 1984-09-05 | Olympus Optical Co Ltd | Automatic focus detecting device |
JPS6014211A (en) * | 1983-07-06 | 1985-01-24 | Olympus Optical Co Ltd | Focusing detecting device |
JPS6061714A (en) * | 1983-09-14 | 1985-04-09 | Olympus Optical Co Ltd | Focusing detecting device |
JPS62107067A (en) * | 1985-10-31 | 1987-05-18 | Kyocera Corp | Diamond coated cutting tool |
JPH04228839A (en) * | 1990-05-24 | 1992-08-18 | Hitachi Ltd | Servo valve control device and its control method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126030A (en) * | 1974-08-28 | 1976-03-03 | Minolta Camera Kk | GOSHOTENKENSHUTSUSOCHI |
-
1978
- 1978-07-28 JP JP9209978A patent/JPS5518652A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126030A (en) * | 1974-08-28 | 1976-03-03 | Minolta Camera Kk | GOSHOTENKENSHUTSUSOCHI |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0340365B2 (en) * | 1980-08-07 | 1991-06-18 | ||
JPS5734509A (en) * | 1980-08-07 | 1982-02-24 | Asahi Optical Co Ltd | Automatic focusing detector of camera |
JPS6344205B2 (en) * | 1980-08-19 | 1988-09-02 | Asahi Optical Co Ltd | |
JPS5737336A (en) * | 1980-08-19 | 1982-03-01 | Asahi Optical Co Ltd | Automatic focus detector for camera |
JPS5746233A (en) * | 1980-09-04 | 1982-03-16 | Asahi Optical Co Ltd | Automatic focus detector of camera |
JPS5764711A (en) * | 1980-10-09 | 1982-04-20 | Asahi Optical Co Ltd | Automatic focus detector for camera |
JPH0340366B2 (en) * | 1980-10-09 | 1991-06-18 | ||
JPS5785013A (en) * | 1980-11-17 | 1982-05-27 | Kawasaki Heavy Ind Ltd | Automatic focusing method |
JPS6345565B2 (en) * | 1980-12-12 | 1988-09-09 | Canon Kk | |
JPS5799604A (en) * | 1980-12-12 | 1982-06-21 | Canon Inc | Focus detector |
JPH0213493B2 (en) * | 1981-03-28 | 1990-04-04 | Olympus Optical Co | |
JPS57160221A (en) * | 1981-03-28 | 1982-10-02 | Olympus Optical Co Ltd | Analog to digital conversion system |
JPS59155809A (en) * | 1983-02-24 | 1984-09-05 | Olympus Optical Co Ltd | Automatic focus detecting device |
JPH0541965B2 (en) * | 1983-02-24 | 1993-06-25 | Olympus Optical Co | |
JPS6014211A (en) * | 1983-07-06 | 1985-01-24 | Olympus Optical Co Ltd | Focusing detecting device |
JPS6061714A (en) * | 1983-09-14 | 1985-04-09 | Olympus Optical Co Ltd | Focusing detecting device |
JPH0380284B2 (en) * | 1983-09-14 | 1991-12-24 | Olympus Optical Co | |
JPS62107067A (en) * | 1985-10-31 | 1987-05-18 | Kyocera Corp | Diamond coated cutting tool |
JPH04228839A (en) * | 1990-05-24 | 1992-08-18 | Hitachi Ltd | Servo valve control device and its control method |
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