JPH0323892B2 - - Google Patents
Info
- Publication number
- JPH0323892B2 JPH0323892B2 JP56035007A JP3500781A JPH0323892B2 JP H0323892 B2 JPH0323892 B2 JP H0323892B2 JP 56035007 A JP56035007 A JP 56035007A JP 3500781 A JP3500781 A JP 3500781A JP H0323892 B2 JPH0323892 B2 JP H0323892B2
- Authority
- JP
- Japan
- Prior art keywords
- holding member
- optical axis
- lens
- axis direction
- cam means
- 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
- 230000003287 optical effect Effects 0.000 claims description 27
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 201000009310 astigmatism Diseases 0.000 description 1
- 238000004519 manufacturing process 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
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/105—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens with movable lens means specially adapted for focusing at close distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/22—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56035007A JPS57148707A (en) | 1981-03-11 | 1981-03-11 | Lens barrel |
US06/354,901 US4457591A (en) | 1981-03-11 | 1982-03-04 | Single operator macro-focusing zoom lens barrel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56035007A JPS57148707A (en) | 1981-03-11 | 1981-03-11 | Lens barrel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57148707A JPS57148707A (en) | 1982-09-14 |
JPH0323892B2 true JPH0323892B2 (US20030199744A1-20031023-C00003.png) | 1991-03-29 |
Family
ID=12430026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56035007A Granted JPS57148707A (en) | 1981-03-11 | 1981-03-11 | Lens barrel |
Country Status (2)
Country | Link |
---|---|
US (1) | US4457591A (US20030199744A1-20031023-C00003.png) |
JP (1) | JPS57148707A (US20030199744A1-20031023-C00003.png) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59214814A (ja) * | 1983-05-20 | 1984-12-04 | Canon Inc | ズ−ムレンズ装置 |
JPS6066216A (ja) * | 1983-09-21 | 1985-04-16 | Asahi Optical Co Ltd | マクロ機構を有するズ−ムレンズ |
US4890132A (en) * | 1987-03-26 | 1989-12-26 | Asahi Kogaku Kogyo Kabushiki Kaisha | Manual control apparatus of zoom lens barrel for an auto focus camera |
JPH03223803A (ja) * | 1990-01-30 | 1991-10-02 | Canon Inc | ズームレンズ鏡筒 |
US10739552B2 (en) * | 2018-02-21 | 2020-08-11 | Panavision International, L.P. | Internally slotted cam for lens system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4322150A (en) * | 1979-07-30 | 1982-03-30 | Canon Kabushiki Kaisha | Mechanical mounting system for zoom objective |
-
1981
- 1981-03-11 JP JP56035007A patent/JPS57148707A/ja active Granted
-
1982
- 1982-03-04 US US06/354,901 patent/US4457591A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS57148707A (en) | 1982-09-14 |
US4457591A (en) | 1984-07-03 |