JPS5066240A - - Google Patents
Info
- Publication number
- JPS5066240A JPS5066240A JP49107563A JP10756374A JPS5066240A JP S5066240 A JPS5066240 A JP S5066240A JP 49107563 A JP49107563 A JP 49107563A JP 10756374 A JP10756374 A JP 10756374A JP S5066240 A JPS5066240 A JP S5066240A
- Authority
- JP
- Japan
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/40—Optical focusing aids
-
- 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)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US404320A US3904870A (en) | 1973-10-09 | 1973-10-09 | Focus detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5066240A true JPS5066240A (ja) | 1975-06-04 |
Family
ID=23599147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49107563A Pending JPS5066240A (ja) | 1973-10-09 | 1974-09-18 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3904870A (ja) |
| JP (1) | JPS5066240A (ja) |
| CA (1) | CA1013978A (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989348A (en) * | 1975-04-28 | 1976-11-02 | Rca Corporation | Optical scanner with large depth of focus |
| FR2325953A1 (fr) * | 1975-09-29 | 1977-04-22 | Thomson Brandt | Senseur optique de focalisation et dispositif de focalisation comportant un tel senseur |
| US4185191A (en) * | 1978-06-05 | 1980-01-22 | Honeywell Inc. | Range determination system |
| JPS58194008A (ja) * | 1982-05-10 | 1983-11-11 | Olympus Optical Co Ltd | 合焦検出装置 |
| US5036191A (en) * | 1989-01-13 | 1991-07-30 | Sharp Kabushiki Kaisha | Key input apparatus with light-shielding plates and liquid crystal shutter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2927216A (en) * | 1957-12-19 | 1960-03-01 | Burroughs Corp | Photometric character recognition device |
| US3450883A (en) * | 1965-02-03 | 1969-06-17 | Conductron Corp | Automatic focusing apparatus |
| US3553455A (en) * | 1968-03-01 | 1971-01-05 | Copal Co Ltd | Automatic focusing apparatus by means of phase discrimination |
| US3634689A (en) * | 1969-04-22 | 1972-01-11 | Hitachi Ltd | Automatic position or condition control devices using relative rotation, linear positioning, and magnification |
| US3610934A (en) * | 1969-08-22 | 1971-10-05 | Century Geophysical Corp | Automatic focusing system utilizing means for alternately directing light over two paths having slightly different lengths |
| US3757124A (en) * | 1971-08-13 | 1973-09-04 | P Kaestner | Optical apparatus for focusing an image |
-
1973
- 1973-10-09 US US404320A patent/US3904870A/en not_active Expired - Lifetime
-
1974
- 1974-07-25 CA CA205,668A patent/CA1013978A/en not_active Expired
- 1974-09-18 JP JP49107563A patent/JPS5066240A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA1013978A (en) | 1977-07-19 |
| US3904870A (en) | 1975-09-09 |