JPS591009U - Shooting lens distance adjustment device that allows extremely close-up photography - Google Patents
Shooting lens distance adjustment device that allows extremely close-up photographyInfo
- Publication number
- JPS591009U JPS591009U JP6000183U JP6000183U JPS591009U JP S591009 U JPS591009 U JP S591009U JP 6000183 U JP6000183 U JP 6000183U JP 6000183 U JP6000183 U JP 6000183U JP S591009 U JPS591009 U JP S591009U
- Authority
- JP
- Japan
- Prior art keywords
- group lens
- lens frame
- rear group
- cylinder
- 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.)
- Granted
Links
Landscapes
- Lens Barrels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の一実施例の要部断面図。
１・・・外筒、２・・・中筒、４・・・内筒、１□・・
・前群レンズ群、１□・・・後群レンズＷＬ １４・
・・前群レンズ枠、２４ａ・２４ｂ・・・後群し、ンズ
枠、２６・・・ローラー、２Ｂ・・・ピン。The figure is a sectional view of a main part of an embodiment of the present invention. 1... Outer cylinder, 2... Middle cylinder, 4... Inner cylinder, 1□...
・Front group lens group, 1□...Rear group lens WL 14・
...Front group lens frame, 24a, 24b...Rear group lens frame, 26...Roller, 2B...Pin.
Claims (1)
により前記固定筒に螺合する距離調定用中筒と、前記中
筒の内面ねじと螺合し光軸まわり回転を拘束される内筒
を有し、合焦用レンズを保持する前群レンズ枠を前記内
筒に結合し、前記前群レンズ群と協働して極近接撮影を
行う後群レンズを保持する後群レンズ枠を前記内筒の内
側に嵌合して配置し、前記後群レンズ枠は該後群レンズ
枠に立てた係合ピンが前記内筒に設けた直線案内溝を貫
ぬいて前記中筒の内周に形成した周溝に嵌合して中筒と
連結し、距離調定操作により前記前群レンズ枠は前記中
筒の内外面ねじの合成リードに従って直進し、前記後群
レンズ枠は前記中筒の外面ねじのリードに従って直進移
動し、前記前群レンズ枠と前記後群レンズ枠の相対距離
を変えるようにしたことを特徴とする極近接撮影の可能
な撮影レンズの距離調定装置。a fixed barrel, a distance adjusting middle barrel that has helicoid threads on its inner and outer surfaces and is screwed onto the fixed barrel by the outer thread; and an inner barrel that is threaded with the inner thread of the middle barrel and restrained from rotating around the optical axis. A front group lens frame that holds a focusing lens is coupled to the inner cylinder, and a rear group lens frame that holds a rear group lens that cooperates with the front lens group to perform extremely close-up photography is connected to the inner cylinder. The rear group lens frame is arranged so as to fit inside the inner cylinder, and the rear group lens frame has an engagement pin set up on the rear group lens frame that passes through a linear guide groove provided in the inner cylinder and connects to the inner periphery of the middle cylinder. The front group lens frame is fitted into the formed circumferential groove and connected to the middle cylinder, and by distance adjustment operation, the front group lens frame moves straight according to the composite lead of the inner and outer surface threads of the middle cylinder, and the rear group lens frame is connected to the middle cylinder. A distance adjusting device for a photographing lens capable of extremely close-up photography, characterized in that the distance adjusting device moves in a straight line according to the lead of an external screw to change the relative distance between the front group lens frame and the rear group lens frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6000183U JPS591009U (en) | 1983-04-21 | 1983-04-21 | Shooting lens distance adjustment device that allows extremely close-up photography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6000183U JPS591009U (en) | 1983-04-21 | 1983-04-21 | Shooting lens distance adjustment device that allows extremely close-up photography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS591009U true JPS591009U (en) | 1984-01-06 |
| JPS619371Y2 JPS619371Y2 (en) | 1986-03-25 |
Family
ID=30190246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6000183U Granted JPS591009U (en) | 1983-04-21 | 1983-04-21 | Shooting lens distance adjustment device that allows extremely close-up photography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03121991U (en) * | 1990-03-27 | 1991-12-12 |
-
1983
- 1983-04-21 JP JP6000183U patent/JPS591009U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03121991U (en) * | 1990-03-27 | 1991-12-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS619371Y2 (en) | 1986-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0192618U (en) | ||
| JPS591009U (en) | Shooting lens distance adjustment device that allows extremely close-up photography | |
| US3877793A (en) | Zoom lens casing | |
| JPS5963315U (en) | Focusing mechanism of lens barrel | |
| JPS59121607U (en) | Intermediate lens barrel for microscope | |
| JPS5865013U (en) | zoom monocular | |
| JPS59176008U (en) | Camera focal length variable device | |
| JPS5973704U (en) | zoom lens barrel | |
| JPS6438610U (en) | ||
| JPS58152611U (en) | zoom lens barrel | |
| JPS60107814U (en) | Fixing device for the inner tube and outer tube in the lens barrel | |
| JPS5961803A (en) | Lens barrel | |
| JPS58166604U (en) | Internal anti-reflection structure of zoom lens | |
| JPS62188871U (en) | ||
| JPS63135340U (en) | ||
| JPS59166206U (en) | lens barrel | |
| JPS6074114U (en) | zoom lens barrel | |
| JPS60128312U (en) | Focusing device for lens barrel with small extension amount | |
| JPS59138808U (en) | Composite image brightness unevenness adjustment mechanism | |
| JPS59176007U (en) | variable focus camera lens barrel | |
| JPS6056013U (en) | Straight zoom lens barrel | |
| JPS58131030U (en) | Structure of aperture linking device in lens | |
| JPS6384107U (en) | ||
| JPS6044011U (en) | zoom lens barrel | |
| JPS591006U (en) | lens barrel |