JPH0416762B2 - - Google Patents
Info
- Publication number
- JPH0416762B2 JPH0416762B2 JP9089380A JP9089380A JPH0416762B2 JP H0416762 B2 JPH0416762 B2 JP H0416762B2 JP 9089380 A JP9089380 A JP 9089380A JP 9089380 A JP9089380 A JP 9089380A JP H0416762 B2 JPH0416762 B2 JP H0416762B2
- Authority
- JP
- Japan
- Prior art keywords
- receiving element
- light receiving
- light
- circuit
- focus detection
- 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 claims description 53
- 230000003287 optical effect Effects 0.000 claims description 41
- 238000011156 evaluation Methods 0.000 claims description 19
- 230000015654 memory Effects 0.000 description 85
- 238000012937 correction Methods 0.000 description 47
- 238000012545 processing Methods 0.000 description 42
- 238000006243 chemical reaction Methods 0.000 description 26
- 238000004364 calculation method Methods 0.000 description 17
- 238000003491 array Methods 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 239000000872 buffer Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004804 winding Methods 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
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
- G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9089380A JPS5716410A (en) | 1980-07-03 | 1980-07-03 | Focusing detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9089380A JPS5716410A (en) | 1980-07-03 | 1980-07-03 | Focusing detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5716410A JPS5716410A (en) | 1982-01-27 |
| JPH0416762B2 true JPH0416762B2 (cs) | 1992-03-25 |
Family
ID=14011077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9089380A Granted JPS5716410A (en) | 1980-07-03 | 1980-07-03 | Focusing detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5716410A (cs) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5962809A (ja) * | 1982-10-04 | 1984-04-10 | Olympus Optical Co Ltd | 焦点検出装置 |
| US5541706A (en) * | 1992-10-22 | 1996-07-30 | Nikon Corporation | Exposure calculation device for a camera |
-
1980
- 1980-07-03 JP JP9089380A patent/JPS5716410A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5716410A (en) | 1982-01-27 |
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