JPS55106409A - Lens barrel of zoom lens capable of taking close-up - Google Patents
Lens barrel of zoom lens capable of taking close-upInfo
- Publication number
- JPS55106409A JPS55106409A JP1362079A JP1362079A JPS55106409A JP S55106409 A JPS55106409 A JP S55106409A JP 1362079 A JP1362079 A JP 1362079A JP 1362079 A JP1362079 A JP 1362079A JP S55106409 A JPS55106409 A JP S55106409A
- Authority
- JP
- Japan
- Prior art keywords
- close
- zoom
- cam
- lens barrel
- lens
- 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.)
- Granted
Links
Landscapes
- Lens Barrels (AREA)
Abstract
PURPOSE: To shorten the cam curve of zoom lens and shorten the lens barrel length, by moving the cam member in the optical axis direction in response to switching operation from zoom-up to close-up, and displacing the optical system to the close- up position.
CONSTITUTION: While a pressure piece of changeover means consisting of close-up operation member 26, pressure piece 28, etc. is contacting with cam face 14c in the zoom-up region of cam member 14, when the zoom operation member 16 is rotated, the variable power action is perfomed. When changing from zoom-up to close-up, by rotating the operation member 26, the pressure piece 28 is spaced from the cam face 14c along 14d or 14e, and th cam member 14 moves by the distance L, so that the optical system is displaced to the close-up position. In this constitution, cam groove for close-up is not necessary, and the cam curve may be shortened, so that the lens barrel length of the zoom lens may be also shortened.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1362079A JPS55106409A (en) | 1979-02-08 | 1979-02-08 | Lens barrel of zoom lens capable of taking close-up |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1362079A JPS55106409A (en) | 1979-02-08 | 1979-02-08 | Lens barrel of zoom lens capable of taking close-up |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55106409A true JPS55106409A (en) | 1980-08-15 |
JPS626202B2 JPS626202B2 (en) | 1987-02-09 |
Family
ID=11838267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1362079A Granted JPS55106409A (en) | 1979-02-08 | 1979-02-08 | Lens barrel of zoom lens capable of taking close-up |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55106409A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61185712A (en) * | 1985-02-13 | 1986-08-19 | Nippon Kogaku Kk <Nikon> | Macro photographing mechanism of zoom lens |
JPH0250113A (en) * | 1988-08-12 | 1990-02-20 | Kyocera Corp | Zoom lens barrel |
JPH0241214U (en) * | 1989-08-31 | 1990-03-22 | ||
JPH02146532A (en) * | 1988-11-29 | 1990-06-05 | Konica Corp | Zoom lens camera |
EP0430097A2 (en) * | 1989-11-24 | 1991-06-05 | Minolta Camera Kabushiki Kaisha | Camera having a pseudo format |
EP0609911A2 (en) * | 1988-06-03 | 1994-08-10 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
JP2002107612A (en) * | 2000-09-28 | 2002-04-10 | Minolta Co Ltd | Portable terminal and method for driving lens unit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5023811A (en) * | 1973-07-03 | 1975-03-14 | ||
JPS5087206A (en) * | 1973-12-05 | 1975-07-14 |
-
1979
- 1979-02-08 JP JP1362079A patent/JPS55106409A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5023811A (en) * | 1973-07-03 | 1975-03-14 | ||
JPS5087206A (en) * | 1973-12-05 | 1975-07-14 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61185712A (en) * | 1985-02-13 | 1986-08-19 | Nippon Kogaku Kk <Nikon> | Macro photographing mechanism of zoom lens |
EP0609911A2 (en) * | 1988-06-03 | 1994-08-10 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
EP0609911A3 (en) * | 1988-06-03 | 1994-09-21 | Asahi Optical Co Ltd | Zoom lens. |
JPH0250113A (en) * | 1988-08-12 | 1990-02-20 | Kyocera Corp | Zoom lens barrel |
JPH02146532A (en) * | 1988-11-29 | 1990-06-05 | Konica Corp | Zoom lens camera |
JPH0241214U (en) * | 1989-08-31 | 1990-03-22 | ||
EP0430097A2 (en) * | 1989-11-24 | 1991-06-05 | Minolta Camera Kabushiki Kaisha | Camera having a pseudo format |
EP0430097A3 (en) * | 1989-11-24 | 1992-10-07 | Minolta Camera Kabushiki Kaisha | Camera having a pseudo format |
JP2002107612A (en) * | 2000-09-28 | 2002-04-10 | Minolta Co Ltd | Portable terminal and method for driving lens unit |
Also Published As
Publication number | Publication date |
---|---|
JPS626202B2 (en) | 1987-02-09 |
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