JPS6392314U - - Google Patents
Info
- Publication number
- JPS6392314U JPS6392314U JP1986186801U JP18680186U JPS6392314U JP S6392314 U JPS6392314 U JP S6392314U JP 1986186801 U JP1986186801 U JP 1986186801U JP 18680186 U JP18680186 U JP 18680186U JP S6392314 U JPS6392314 U JP S6392314U
- Authority
- JP
- Japan
- Prior art keywords
- optical means
- humidity
- detection device
- focus detection
- light intensity
- 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
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims 2
- 230000005606 hygroscopic expansion Effects 0.000 claims 1
- 210000001747 pupil Anatomy 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method 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
- G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
- G02B7/346—Systems for automatic generation of focusing signals using different areas in a pupil plane using horizontal and vertical areas in the pupil plane, i.e. wide area autofocusing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Lens Barrels (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986186801U JPS6392314U (US06623731-20030923-C00012.png) | 1986-12-05 | 1986-12-05 | |
| US07/391,717 US4975727A (en) | 1986-12-05 | 1989-08-07 | Focus detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986186801U JPS6392314U (US06623731-20030923-C00012.png) | 1986-12-05 | 1986-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6392314U true JPS6392314U (US06623731-20030923-C00012.png) | 1988-06-15 |
Family
ID=16194823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986186801U Pending JPS6392314U (US06623731-20030923-C00012.png) | 1986-12-05 | 1986-12-05 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4975727A (US06623731-20030923-C00012.png) |
| JP (1) | JPS6392314U (US06623731-20030923-C00012.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04235510A (ja) * | 1991-01-11 | 1992-08-24 | Fuji Photo Film Co Ltd | ズームレンズ |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06324260A (ja) * | 1993-05-14 | 1994-11-25 | Olympus Optical Co Ltd | 焦点検出装置 |
| JP3144155B2 (ja) * | 1993-05-20 | 2001-03-12 | キヤノン株式会社 | 焦点検出装置 |
| JPH0868933A (ja) * | 1994-08-31 | 1996-03-12 | Nikon Corp | 自動合焦装置 |
| JP4018218B2 (ja) | 1997-12-25 | 2007-12-05 | キヤノン株式会社 | 光学装置及び測距点選択方法 |
| JP2002365771A (ja) * | 2001-06-11 | 2002-12-18 | Fuji Photo Film Co Ltd | レンズ付きフイルムユニット |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335959A (en) * | 1979-12-03 | 1982-06-22 | Polaroid Corporation | Optical element for photographic radiometer |
| US4559446A (en) * | 1982-02-18 | 1985-12-17 | Canon Kabushiki Kaisha | Focus detecting system using light from an imaging optical system for focus detection |
| JPS5913207A (ja) * | 1982-07-14 | 1984-01-24 | Canon Inc | 焦点検出装置 |
| JPS60235110A (ja) * | 1984-05-07 | 1985-11-21 | Minolta Camera Co Ltd | 焦点検出装置の温度補償装置 |
| US4662735A (en) * | 1985-01-16 | 1987-05-05 | Minolta Camera Kabushiki Kaisha | Plastic lens elements supporting structure |
-
1986
- 1986-12-05 JP JP1986186801U patent/JPS6392314U/ja active Pending
-
1989
- 1989-08-07 US US07/391,717 patent/US4975727A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04235510A (ja) * | 1991-01-11 | 1992-08-24 | Fuji Photo Film Co Ltd | ズームレンズ |
Also Published As
| Publication number | Publication date |
|---|---|
| US4975727A (en) | 1990-12-04 |
