DE3406460C2 - Automatische Brennpunktermittlungsvorrichtung - Google Patents
Automatische BrennpunktermittlungsvorrichtungInfo
- Publication number
- DE3406460C2 DE3406460C2 DE3406460A DE3406460A DE3406460C2 DE 3406460 C2 DE3406460 C2 DE 3406460C2 DE 3406460 A DE3406460 A DE 3406460A DE 3406460 A DE3406460 A DE 3406460A DE 3406460 C2 DE3406460 C2 DE 3406460C2
- Authority
- DE
- Germany
- Prior art keywords
- pupil
- output signals
- image
- light
- photoelectric
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 210000001747 pupil Anatomy 0.000 claims abstract description 76
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000003384 imaging method Methods 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 38
- 238000012937 correction Methods 0.000 description 25
- 230000008569 process Effects 0.000 description 25
- 238000004364 calculation method Methods 0.000 description 20
- 230000003287 optical effect Effects 0.000 description 18
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 3
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- 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
- G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58028599A JPS59155809A (ja) | 1983-02-24 | 1983-02-24 | 自動焦点検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3406460A1 DE3406460A1 (de) | 1984-08-30 |
| DE3406460C2 true DE3406460C2 (de) | 1986-10-30 |
Family
ID=12253050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3406460A Expired DE3406460C2 (de) | 1983-02-24 | 1984-02-23 | Automatische Brennpunktermittlungsvorrichtung |
Country Status (3)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606694C2 (de) * | 1995-02-22 | 2002-12-12 | Asahi Optical Co Ltd | Entfernungsmeßvorrichtung |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766302A (en) * | 1984-05-17 | 1988-08-23 | Minolta Camera Kabushiki Kaisha | Focus detecting device including means for determining a priority of correlation calculations |
| JPS6180623A (ja) * | 1984-09-28 | 1986-04-24 | Toshiba Corp | デジタルデイスクレコ−ド再生装置 |
| US4888609A (en) * | 1985-01-17 | 1989-12-19 | Minolta Camera Kabushiki Kaisha | Automatic focus adjusting apparatus |
| US4851657A (en) * | 1985-12-23 | 1989-07-25 | Minolta Camera Kabushiki Kaisha | Focus condition detecting device using weighted center or contrast evaluation |
| JPS62148911A (ja) * | 1985-12-23 | 1987-07-02 | Minolta Camera Co Ltd | 焦点検出装置 |
| US4862204A (en) * | 1985-12-25 | 1989-08-29 | Minolta Camera Kabushiki Kaisha | Focus detection device and method |
| US4831403A (en) * | 1985-12-27 | 1989-05-16 | Minolta Camera Kabushiki Kaisha | Automatic focus detection system |
| JPS63246709A (ja) * | 1986-05-16 | 1988-10-13 | Minolta Camera Co Ltd | 焦点検出装置 |
| JPS63167313A (ja) * | 1986-12-27 | 1988-07-11 | Hitachi Ltd | 自動焦点制御方法 |
| GB2200010B (en) * | 1987-01-12 | 1991-10-16 | Canon Kk | Focus detection apparatus for camera |
| JPH03289293A (ja) * | 1990-04-04 | 1991-12-19 | Mitsubishi Electric Corp | 撮像装置 |
| DE4222190A1 (de) * | 1992-07-07 | 1994-01-13 | Philips Patentverwaltung | Funkgerät mit einer Antennenumschaltvorrichtung |
| KR960028223A (ko) * | 1994-12-15 | 1996-07-22 | 나카사토 요시히코 | 영상쌍간의 위상차 검출 방법 |
| US5913077A (en) * | 1995-10-16 | 1999-06-15 | Asahi Kogaku Kogyo Kabushiki Kaisha | Image reader incorporated in electro-developing type camera and electro-developing recording medium used therein |
| JP5645846B2 (ja) * | 2009-10-13 | 2014-12-24 | キヤノン株式会社 | 焦点調節装置及び焦点調節方法 |
| JP6506908B2 (ja) * | 2014-02-24 | 2019-04-24 | オリンパス株式会社 | 合焦方法、計測方法、合焦装置、及び計測装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS499372A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-05-23 | 1974-01-26 | ||
| US3906219A (en) * | 1973-10-09 | 1975-09-16 | Honeywell Inc | Focus detecting apparatus |
| US4201456A (en) * | 1976-04-22 | 1980-05-06 | Wolbarsht Myron L | Method and apparatus for detecting the focusing condition of an optical system |
| US4078171A (en) * | 1976-06-14 | 1978-03-07 | Honeywell Inc. | Digital auto focus |
| JPS5518652A (en) * | 1978-07-28 | 1980-02-08 | Canon Inc | Imaging state detecting system of image |
| DE2910875C2 (de) * | 1979-03-20 | 1985-11-14 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Verfahren zur automatischen Scharfeinstellung |
| DE3131053C2 (de) * | 1980-08-07 | 1983-12-29 | Asahi Kogaku Kogyo K.K., Tokyo | Automatische Fokussierungsermittlungseinrichtung für eine Kamera |
| JPS5746233A (en) * | 1980-09-04 | 1982-03-16 | Asahi Optical Co Ltd | Automatic focus detector of camera |
| US4357086A (en) * | 1980-08-18 | 1982-11-02 | Nippon Kogaku K.K. | Focus detecting optical device of a single lens reflex camera |
-
1983
- 1983-02-24 JP JP58028599A patent/JPS59155809A/ja active Granted
-
1984
- 1984-02-23 DE DE3406460A patent/DE3406460C2/de not_active Expired
- 1984-02-23 US US06/582,736 patent/US4633073A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606694C2 (de) * | 1995-02-22 | 2002-12-12 | Asahi Optical Co Ltd | Entfernungsmeßvorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59155809A (ja) | 1984-09-05 |
| US4633073A (en) | 1986-12-30 |
| JPH0541965B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-06-25 |
| DE3406460A1 (de) | 1984-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |