JPS6343117U - - Google Patents
Info
- Publication number
- JPS6343117U JPS6343117U JP13806586U JP13806586U JPS6343117U JP S6343117 U JPS6343117 U JP S6343117U JP 13806586 U JP13806586 U JP 13806586U JP 13806586 U JP13806586 U JP 13806586U JP S6343117 U JPS6343117 U JP S6343117U
- Authority
- JP
- Japan
- Prior art keywords
- close
- group lens
- tube
- rear group
- photography
- 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 1
Landscapes
- Lens Barrels (AREA)
Description
図は本考案の一実施例を示すもので、第１図は
レンズ鏡胴の縦断面図、第２図は前群レンズを取
外した鏡胴の一部切截正面図、第３図はフランジ
フオーカス調整手段を示す平面図である。
１…固定胴、４，５…ヘリコイド、６…クロー
ズアツプ筒、７…後群レンズ、８…後群レンズ保
持枠部材、１１…前群レンズ、１２…前群レンズ
保持枠部材、１３…絞り機構、１９…フランジフ
オーカス調整部、２６…第１位置決め突起、２７
…第２位置決め突起、２９…レバー、３１…スト
ツパ突起、３５…バネ部材。
The figures show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of the lens barrel, Fig. 2 is a partially cutaway front view of the lens barrel with the front group lens removed, and Fig. 3 is a flange. FIG. 3 is a plan view showing focus adjustment means. DESCRIPTION OF SYMBOLS 1... Fixed cylinder, 4, 5... Helicoid, 6... Close-up cylinder, 7... Rear group lens, 8... Rear group lens holding frame member, 11... Front group lens, 12... Front group lens holding frame member, 13... Aperture Mechanism, 19... Flange focus adjustment section, 26... First positioning protrusion, 27
...Second positioning protrusion, 29...Lever, 31...Stopper protrusion, 35...Spring member.
Claims (1)
レンズの後群レンズを光軸方向に移動させること
により焦点調節を行なうレンズ鏡胴において、後
群レンズを保持する後群レンズ保持枠部材をフラ
ンジフオーカス調整可能に外部に突出するレバー
を有するクローズアツプ筒内に設けるとともに、
該クローズアツプ筒を通常撮影を行なう第１位置
とクローズアツプ撮影を行なう第２位置との間移
動可能に固定胴にヘリコイドを介して内挿し、か
つ該固定胴とクローズアツプ筒とに該クローズア
ツプ筒を前記第１位置に復帰させるためのバネ部
材を設けたことを特徴とするクローズアツプ機構
を有するレンズ鏡胴。 In a lens barrel that performs focus adjustment by moving the rear group lens of a photographing lens consisting of a front group lens and a rear group lens in the optical axis direction, a rear group lens holding frame member that holds the rear group lens is attached to a flange. It is installed in a close-up cylinder that has a lever that protrudes to the outside so that the focus can be adjusted.
The close-up tube is movably inserted into the fixed cylinder via a helicoid between a first position for normal photography and a second position for close-up photography, and the close-up tube is inserted into the fixed cylinder and the close-up tube so as to be movable between a first position for normal photography and a second position for close-up photography. A lens barrel having a close-up mechanism, characterized in that a spring member is provided for returning the tube to the first position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13806586U JPS6343117U (en) | 1986-09-09 | 1986-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13806586U JPS6343117U (en) | 1986-09-09 | 1986-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6343117U true JPS6343117U (en) | 1988-03-23 |
Family
ID=31042706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13806586U Pending JPS6343117U (en) | 1986-09-09 | 1986-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6343117U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51100722A (en) * | 1975-03-01 | 1976-09-06 | Fuji Photo Optical Co Ltd | |
| JPS5317329A (en) * | 1976-07-31 | 1978-02-17 | Fuji Photo Optical Co Ltd | Lens barrel with change mechanism between tracking control and macro photograph |
| JPS5323230B2 (en) * | 1974-01-16 | 1978-07-13 | ||
| JPS59170806A (en) * | 1983-03-17 | 1984-09-27 | Canon Inc | Lens barrel capable of tracking adjustment and macro photography |
-
1986
- 1986-09-09 JP JP13806586U patent/JPS6343117U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5323230B2 (en) * | 1974-01-16 | 1978-07-13 | ||
| JPS51100722A (en) * | 1975-03-01 | 1976-09-06 | Fuji Photo Optical Co Ltd | |
| JPS5317329A (en) * | 1976-07-31 | 1978-02-17 | Fuji Photo Optical Co Ltd | Lens barrel with change mechanism between tracking control and macro photograph |
| JPS59170806A (en) * | 1983-03-17 | 1984-09-27 | Canon Inc | Lens barrel capable of tracking adjustment and macro photography |